If holes have to be drilled (wear safety glasses) in order to facilitate mounting the device frame, the reservoir frame, the LPG/CNG cut-off valve, etc., the drilled holes must always be treated with an anti-corrosive, after the burrs have been removed ( especially when mounting a exterior filler ).



After having completed the installation, check the whole system for gas leakage; use a gas leak detection device.



Fitting and maintenance is only allowed by Prins Autogassystemen selected LPG/CNG engineers.



Prins Autogassystemen is not responsible for any damages to people or objects as a result of changes to Prins products.

Check our website regularly for updates, info-bulletins and product information.

( www.prinsautogassytemen.com )



For installing a dedicated VSI-system download DEDICATED MANUAL ( part 2/2 )

Please fill in the warranty card completely and return it within 8 days after installation.

2013 Page 4

Introduction

VSI stands for “vapour sequential injection”, it points directly to the most important properties of the system.

This second-generation gas injection system is based on a vapour LPG/CNG injection that is injected sequentially in the engine. Sequential means that the gas injectors will inject the LPG/CNG in the sequence equal to the injection sequence of the petrol injectors,

This sequence in most applications is equal to the firing order of the ignition sequence of the engine, for example with a 4-cylinder engine this is normally 1-3-4-2. Sequential injection means that the amount of injected fuel per cylinder the can be metered and timed individually.

This achieves a much higher level of performance emission and drivability. The VSI system was designed and developed in-house by Prins Autogassystemen B.V.

VSI characterizes itself with a high level of integration into to the petrol management system. The two systems integrate as “master-slave” system.

This means that the original petrol management ECM controls the amount of LPG/CNG injected via the gas injectors into the engine. The VSI ECM only translates the relevant signals coming from the engine management system necessary for MASTER /SLAVE strategy.

Following this strategy the petrol management system is the “MASTER” and the VSI ECM the “SLAVE”.

The advantage of this strategy: while driving on LPG/CNG the lambda control and OBD functions keep within the OE parameters, functioning correctly and controlled by the petrol management system. So when operating on LPG/CNG it is not necessary to generate simulated signals.

There is one exception made for the petrol injector signals, while driving on LPG/CNG the petrol injector’s are switched off to discontinue the petrol supply. To maintain the injection control signals it is necessary to simulate the petrol injectors to ensure the original ECM does not detect a fault code. Secondly when operating on LPG/CNG it is necessary to maintain a petrol injector control signal to measure the required fuel demand.

The second generation injection system VSI has the ability to inject sequentially making it quicker and more accurate, large benefits can be gained in engine and emission performance.

2013 Page 5

Approval numbers VSI LPG / CNG components

Mark

Prins

Valtec

Keihin

OMB

Wika

Prins

Keihin

Prins

Keihin

Prins

Component

VSI Reducer

6 / 8mm lock-off valve

Regulator lock-off valve

CNG Pressure indicator

VSI Injector rail

VSI Injector

Filter unit

ECU

Electrical VSI components

LPG

E4-67R-010054

E4-67R-010041

E4-67R-010093

E4-67R-010092

E4-67R-010096

E4-67R-010177

E4-67R-010098

CNG

E4-110R-000092

E4-110R-000095

E4-110R-000190

E4-110R-000021

E4-110R-000020

E4-110R-000028

E4-110R-000091

E4-110R-000083

EMC : E4-10R-020507

VSI-I LPG VSI-2.0 LPG / VSI-2.0 DI LPG

VSI-1 CNG VSI-2-0 CNG / VSI-2-0 DI CNG

2013 Page 6

The Prins LPG reducer



Mount the reducer to the body of the vehicle in the engine compartment, never on the engine!



Mount the reducer so that it is easy to adjust the pressure.



Install the supplied 8 mm threaded end in the back cover of the reducer.



Mount the reducer as shown in the drawing.



Mount the reducer on a bracket and bolt on with a M8x1 nut.



The LPG lock-off valve can be installed in different positions. Do not damage the O-rings when rotating the lock-off valve. See picture for torque moment.



The reducer is connected to the heating system circuit by couplings between the coolant fluid hoses: dependant on the converted vehicle the reducer is placed in series or in parallel with the heating system.



Overpressure 5mm relief hose : connect to the intake manifold.



No component of the LPG-system shall be located within 100 mm of the exhaust or similar heat source, unless such components are adequately shielded against heat.



The pressure can be adjusted with the adjusting screw (Allan screw) in the front cover.



Seal the adjusting screw, with the sticker, in the front cover of the reducer after adjusting the pressure. mounting positions

Standard reducer, 6 mm LPG pipe, used for engines with a HP up to 135 kW ( 180 HP ).

High Output reducer, 8 mm LPG pipe, used for engines with a HP over 135 kW ( 180 HP ).

Use a High Output MAP reducer on blown engines ( turbo / compressor )

NO

threat locking compound allowed !!

2013 Page 7

The Keihin CNG regulator



Mount the Keihin regulator to the body of the vehicle in the engine compartment, never on the engine!



Mount the regulator so that it is easy to replace the inlet filter.



Mount the regulator as shown in the drawing with the water connections downwards.



Mount the regulator on a bracket and bolt on with 3 M6x1 nuts.



The regulator is connected to the heating system circuit by couplings between the coolant fluid hoses.



Optional MAP connection: connect to the intake manifold if needed.



No component of the CNG-system shall be located within 100 mm of the exhaust or similar heat source, unless such components are adequately shielded against heat.



The pressure may not be adjusted and is fixed on 3.3 bar

2013 Page 8

The injector rail

(KN-8)

VSI 4-cylinder injector rail [KN8/KN9]

The Prins injector rail is available in 2 - 3 - 4 - 5 rail versions.

Guideline VSI injector choice : divide total engine power in kW up into the amount of cylinders.

LPG:

Color ID

(KN-8)

Green white

Blue

Orange

Yellow

Brown

Injector size

32cc /stroke

42cc/stroke

52cc/stroke

63cc/stroke

73cc/stroke

82cc/stroke

100cc/stroke

9,0

13,0

18,0

Minimum power per cylinder [LPG] kW HP

12,1

17,4

24,1

25,0

28.0

31,0

33,5

37,6

41,6

13,0

15,0

20,0

27,0

35,0

39,0

45,0

Maximum power per cylinder [LPG] kW

17,4

20,1

26,8

36,2

46,9

52,3

60,3

CNG:

Color ID

(KN-8)

Injector size Minimum power per cylinder [CNG]

Maximum power per cylinder [CNG] kW HP kW HP

Green

White

42cc/stroke 7,0 9,4

9,0

12,0

12,1

16,1

Blue

Orange

Yellow

Brown

52cc/stroke

63cc/stroke

73cc/stroke

82cc/stroke

100cc/stroke

10,0

14,0

20,0

23,0

13,4

18,8

26,8

30,8

33,5

16,0

22,0

28,0

33,0

36,0

21,5

29,5

37,5

44,2

48,3

2013 Page 9

The Prins filter unit

The filter unit filters the LPG/CNG and is also used to measure the gas temperature (T_gas) and gas pressure (Psys) in the VSI system, by means of a combination sensor.

The filter unit has a single or a double outlet of 11mm.

Single outlet : on converted vehicle with 3-4 or 5 cylinder engines with one VSI injector rail.

Double outlet : on converted vehicle with 6 or 8 cylinder engines with two VSI injector rails.

Single outlet

3-4-5 cylinder engine

The Keihin filter unit

Double outlet

6-8 cylinder engine

2013 Page 10

The VSI computer

The VSI computer can be mounted into the engine room as well as inside the car, depending on the converted vehicle.

Never mount the computer near a heat source.

Never mount the computer upside down.

Never clean engine room with a high pressure cleaner.

VSI-I

2013 Page 11

VSI-2.0 computer

The Prins VSI-2.0 computer is the second generation master-slave management system. This new design has distinctive features and will be used as a new platform for current and future Prins injection systems.

2013 Page 12

Instructions rotating the Prins VSI injector rail

This is an instruction how to convert a “right” rail into a “left” injector rail

Tools : Ring spanner size 13 mm

Torque spanner ( 0-3 Nm )

Disassembly / assembly:

1. Unscrew both M8 (4) nuts.

2. Remove the strip (2).

3. Remove the injectors (10) with a rotating movement out of the fuel rail (1).

4. Rotate the rail (1) 180 degrees.

5. Mount the injectors (10) with a rotating movement into the fuel rail (1).

6. Mount the strip (2) on the injectors (10).

7. Tighten the strip (2) with two M8 nuts (4). Tightening moment 2.5 Nm.

2013 Page 13

The wiring loom.

The cables in the loom are provided with numbers and text. The text on the cable explains the function of the wire. The wire loom is not model specific, therefore is it may be necessary to adjust the length of the wires.

The watertight ECM housing is made from aluminium; this material is chosen for its excellent heat dissipation qualities, necessary for cool the injector drivers.

Always fix the computer in the coolest place in the engine compartment.

All cable numbers correspond with a position numbered on the connector.

Example wire number 4 is mounted on connector position 4.

Ensure maximum care is taken when connecting wiring.

Make professional solder joints and insulate the joints.

Do not stretch the wiring harness.

VSI-I

The wiring harness is equipped with a 56 position interlocking connector which slots into the VSI computer.

Pull the purple interlocking clip and push the connector into the VSI computer, push the clip back into its original position, the connector is now locked into the VSI computer.

VSI-2.0

The wiring harness connects to the computer via two Bosch a 81+40 pins connector which is locked to the

VSI-2.0 computer by means of connector clamping mechanism.

2013 Page 14

Hose connections

Try to keep the inlet manifold hoses as short as possible.

Use a hose clamp on all the LPG/CNG hose connections.

Please observe that there is no damage or fouling to the hoses.

2013 Page 15

VSI injector

Hose clamp

LPG hose petrol injector inlet manifold

VSI inlet manifold coupling

exhaust manifold

Hose clamp

Coupling

Lambda sensor

Diagram 1 VSI inlet manifold coupling

VSI injector

VSI inlet manifold coupling with nylon hose

Hose clamp

LPG hose

Hose clamp

Nylon hose

Nut

Barrel

Coupling inlet manifold petrol injector exhaust manifold oxygen sensor

Diagram 2 VSI inlet manifold coupling with nylon hose

2013 Page 17

exhaust oxygen sensor injector rail

filter unit

Psys + Tlpg sensor

VSI injector 1 2 3 4 petrol injector cylinder 1

vsi coupling inlet manifold overpressure hose

throttle body reducer

+ lock-off valve

LPG fuel line Tank heater valve interior heater with valve in engine coolant out

T-piece

Diagram 3 Parallel water connection

2013 Page 18

exhaust oxygen sensor injector rail filter unit

VSI injector 1 2 3 4 petrol injector cylinder 1

vsi coupling inlet manifold overpressure hose

throttle body

Psys + Tlpg sensor reducer

+ lock-off valve

LPG fuel line Tank interior heater without valve engine coolant out

Diagram 4 Serial water connection

2013 Page 19

Diagram 5 Serial water connection CNG regulator

2013 Page 20

The VSI-I fuel switch

Mount the switch on a visible and approachable place for the driver.

When mounting the switch, only push on its sides.

Pushing the switch in the centre may result in damage to the switch.

ELECTRICAL CONNECTION OF THE LPG SWITCH with loose beeper

VSI SWITCH partnr. 080/70060 Hall partnr. 080/70062 0-95 Ohm partnr. 080/70063 0-5 Volt

POWER FEEDS (51)

ARE EXCHANGABLE.

8-POLE

CONNECTORS

5 6 7 8

1 2 3 4

BLUE TANK INDICATOR

POSITION 1 ON CONNECTOR

BROWN

POSITION 2 ON CONNECTOR

GROUND

YELLOW-GREEN

POSITION 3 ON CONNECTOR

POWER FEED TANKINDICATION

RED

POSITION 4 ON CONNECTOR

POWER FEED SWITCH

YELLOW

POSITION 5 ON CONNECTOR

PULSE FUEL SWITCH

ORANGE DIAGNOSTIC LED

POSITION 6 ON CONNECTOR

BEEPER

BLACK

POSITION 7 ON CONNECTOR

GROUND BEEPER

RED

POSITION 8 ON CONNECTOR

POWER FEED BEEPER

ELECTRICAL CONNECTION OF THE LPG SWITCH with internal beeper

VSI SWITCH WITH

INTERNAL BEEPER partnr. 080/70058

8-POLE

CONNECTORS

5 6 7 8

1 2 3 4

BLUE

BROWN

YELLOW-GREEN

POSITION 3 ON CONNECTOR

RED

POSITION 2 ON CONNECTOR

POSITION 4 ON CONNECTOR

YELLOW

POSITION 5 ON CONNECTOR

ORANGE

POSITION 1 ON CONNECTOR

POSITION 6 ON CONNECTOR

BLACK

POSITION 7 ON CONNECTOR

TANK INDICATOR

GROUND

POWER FEED TANKINDICATION

POWER FEED SWITCH

PULSE FUEL SWITCH

DIAGNOSTIC LED

GROUND BEEPER

ELECTRICAL CONNECTION OF THE CNG SWITCH with internal beeper

VSI SWITCH WITH

INTERNAL BEEPER partnr. 095/70058

8-POLE

CONNECTORS

5 6 7 8

1 2 3 4

BLUE

POSITION 1 ON CONNECTOR

BROWN

YELLOW-GREEN

POSITION 3 ON CONNECTOR

RED

POSITION 2 ON CONNECTOR

POSITION 4 ON CONNECTOR

YELLOW

POSITION 5 ON CONNECTOR

ORANGE

POSITION 6 ON CONNECTOR

BLACK

POSITION 7 ON CONNECTOR

Pressure gauge signal

GROUND

POWER FEED TANKINDICATION

POWER FEED SWITCH

PULSE FUEL SWITCH

DIAGNOSTIC LED

GROUND BEEPER

The LPG VSI switch with internal beepers is programmable for different types of tank indicators.

Standard setting of the switch is 0-95 Ohm.

For reprogramming the switch:

1. Make sure that the ignition switch is turned off.

2. Place the VSI main fuse.

3. Push the switch for 5 seconds until a signal sounds (beep).

4. Make a choice immediately: push 1 x for 0-95 Ohm tank indicator

push 2 x for Hall tank indicator

( push 3 x preparation VSI2, not used )

5. The VSI switch will confirm the choice with a beep signal ( 1 or 2 signals )

To change the choice of indicator: remove the VSI main fuse and start with step 1.

The CNG switch is not programmable. The CNG switch is not exchangeable with a LPG switch!

The VSI-2.0 fuel switch

The VSI-2.0 switch is designed for the new VSI-2.0 platform.

The switch is controlled by the VSI-2.0 computer through LIN communication.

Operation mode

Engine off

Contact+ on /engine of

Fuel selection

GAS/Petrol

Petrol

Gas

Engine on

Gas standby

Gas mode

Tank empty, switched back to petrol mode

Tank empty, petrol mode

Critical fault

Non critical fault, petrol mode

Non critical fault, gas mode

Petrol

Gas

Petrol

Gas

Petrol

Gas

Active fuel

Petrol

Gas

Petrol

Gas

Status

LED

Off

Tank

LEDS

Off

On flashing1,

0Hz

Off flashing

1,0Hz

On flashing1,

0Hz

Off flashing

1,0 Hz

Off on

Off

LED 1

1,0Hz

Led1 on

Beeper Diagnose

LED

Off

3x0,5Hz

Off

On, 2Hz

Off

Off on 3 sec

(system check) on 3sec

(system check)

Off

Flashing

1,0 Hz

2013 Page 22

Electrical connections on the LPG reservoir

The wire harness contains the wires for connecting the LPG reservoir.

Refer to the following diagram when connecting the LPG reservoir.

TRIPLE WIRE CABLE

VSI COMPUTER

COIL

TANK VALVE

BLACK

RED

BLACK

BLUE

FITTING BOX

PRINS

BLACK BLUE

GROUND SIGNAL

BLACK

BLUE

Tank gauge

Hall

SOLDER THE CONNECTIONS IN THE FITTING BOX

AND PROTECT THEM WITH A SHRINK SLEEVE.

TRIPLE WIRE CABLE

VSI COMPUTER

COIL

TANK VALVE

BLACK

RED

BLACK

BLUE

FITTING BOX

BLACK GREEN

Tank gauge

0-95 Ohm

SOLDER THE CONNECTIONS IN THE FITTING BOX

AND PROTECT THEM WITH A SHRINK SLEEVE.

2013 Page 23

Electrical connections VSI-I wiring harness

Check and measure the wiring in case of changes in the cars wiring colours.

Wire number / code

50 MAIN GND

25-51 +12V BAT

42 ECT GND

43 ECT

22 RS232 TxD

23 RS232 RxD

50 DIAGNOSE GND

51 +12V DIAG

15 T LPG

17 Psys

18 + 5V Psys

42 Psys GND

33 33G INJ OUT 1

34 34 G INJ A PLUS

32 32G INJ OUT 2

34 34 G INJ A PLUS

31 31G INJ OUT 3

34 34 G INJ A PLUS

30 30G INJ OUT 4

34 34 G INJ A PLUS

5 5G INJ OUT 5

6 34 G INJ A PLUS

4 4G INJ OUT 6

6 34 G INJ A PLUS

3 3G INJ OUT 7

6 34 G INJ A PLUS

LPG/CNG VLV GND

+ LPG/CNG VLV

2G INJ OUT 8

6 34 G INJ A PLUS

44 AD1

16 MAP

18 + 5V MAP

42 MAP GND

Wire colour

brown red brown yellow - green brown grey grey grey brown red grey pale green red brown

white - yellow

red

green - yellow

red

pink - yellow

red

blue - yellow

red

grey - yellow

red

brown - yellow

red

light blue - yellow

red

red - yellow

red green blue red brown

Connection

Connect to the '

–' of the battery; use a ring terminal for this purpose.

Connect to the '+' of the battery; use a ring terminal for this purpose or solder.

Do not place the main fuse into the fuse holder before having completed the installation of the system.

Ground shut-off valve.

Power supply shut-off valve.

Ground ECT sensor.

ECT measurement.

2-pole connector shut-off valve.

2-pole black connector temperature sensor in the evaporator.

4-pole black connector diagnosis wire connection.

4-pole black connector filter unit connection.

Connector VSI-injector to cylinder 1.

Connector VSI-injector to cylinder 2.

Connector VSI-injector to cylinder 3.

Connector VSI-injector to cylinder 4.

Connector VSI-injector to cylinder 5.

Connector VSI-injector to cylinder 6.

Connector VSI-injector to cylinder 7.

Connector VSI-injector to cylinder 8.

Option, programmable input

For measuring the inlet manifold pressure (MAP).

In combination with Prins Turbo/MAP sensor.

PTO CRANK-D

50 Ground

53 + CNG

Signal purple / purpleyellow blue green-yellow blue

For interrupting the crank signal on CNG.

For measuring the high pressure signal of the CNG system

In combination with Prins High Pressure gauge

2013 Page 24

Electrical connections VSI-I wiring harness

Check and measure the wiring in case of changes in the cars wiring colors.

13 IGNITION + grey-white Make a connection to ignition + / contact +.

Make sure that the voltage will not fail during starting the engine.

46 LAMBDA 1-L orange For the measurement of the lambda signal of cylinder bank 1.

Connect the wire parallel to the lambda sensor signal wire.

45 LAMBDA 2-R orange-white For the measurement of the lambda signal of cylinder bank 2.

Connect the wire parallel to the lambda sensor signal wire.

40 RPM purple-white For measuring the engine speed.

Connect to a Hall-sensor or camshaft sensor,

Make sure that the squared signal is not higher then 30 Volt !

Never connect to the ignition coil (only with a RPM module) !

Injector measure wire

( injection module )

Bicolour /

Full colour

For measuring / interrupting the petrol injectors :

Interrupt each petrol injector control wire ( injector min )

Each VSI wire has a cylinder number printed on the wire, connect this wire to the corresponding petrol injector.

Connect the bicoloured VSI measuring wire to the ecu side,

( wire code: ECU SIDE ).

Connect the accompanying full coloured VSI wire to the

petrol injector side ( wire code: MIN INJ SIDE ).

See diagrams in Installation Manual General part 1 / 2.

Attention:

Each bicoloured measuring wire corresponds to a specific

LPG injector and cylinder number. Do not interchange the wires.

Injection module => VSI-ecm =>

White-yellow

VSI injector rail vsi nr. 39 ( petrol injector cyl.1 ) =>VSI-ecm=> White-yellow vsi nr.33 ( vsi injector cyl.1 )

Green-yellow

Pink-yellow

Blue-yellow

Grey-yellow vsi nr. 38 ( petrol injector cyl.2 ) =>VSI-ecm=> Green-yellow vsi nr.32 ( vsi injector cyl.2 ) vsi nr. 37 ( petrol injector cyl.3 ) =>VSI-ecm=> Pink-yellow vsi nr.31 ( vsi injector cyl.3 ) vsi nr. 36 ( petrol injector cyl.4 ) =>VSI-ecm=> Blue-yellow vsi nr. 11 ( petrol injector cyl.5 ) =>VSI-ecm=> Grey-yellow

vsi nr.30 ( vsi injector cyl.4 )

vsi nr.05 ( vsi injector cyl.5 )

Bruin-yellow vsi nr. 10 ( petrol injector cyl.6 ) =>VSI-ecm=> Brown-yellow vsi nr.04 ( vsi injector cyl.6 )

Light blue-yellow vsi nr. 09 ( petrol injector cyl.7 ) =>VSI-ecm=> Light blue-yellow vsi nr.03 ( vsi injector cyl.7 )

Red-yellow vsi nr. 08 ( petrol injector cyl.8 ) =>VSI-ecm=> Red-yellow vsi nr.02 ( vsi injector cyl.8 )

2013 Page 25

Electrical connections VSI-2.0 wiring harness

Check and measure the wiring in case of changes in the cars wiring colours.

Insulate all not used wires.

Wire number / code

1 ground battery

32 ground battery sense

Wire colour

brown brown

Connection

Connect to the ‘–‘ of the battery; use a ring terminal for this purpose.

Wire colour :

Wire location :

Connect to the ‘–‘ of the battery together with VSI wire 1 ground battery.

44 +12V battery

13 +12V battery sense red red

Connect to the '+' of the battery; use a ring terminal for this purpose or solder.

Wire colour :

Wire location :

Do not place the fuse in the holder before having completed the installation of the LPG system.

Connect to the ‘+‘ of the battery together with VSI wire 44

+12V battery.

112 + petrol injectors or

ignition+ ( +15 ) red-grey Make a connection to + petrol injector or ignition+ ( +15 )

Wire colour :

Wire location :

20 AD3 ( lambda 1 ) orange For the measurement of the lambda signal of cylinder bank

Connect the wire in parallel to the lambda sensor.

Wire colour :

Wire location :

19 AD4 ( lambda 2 ) orange-white For the measurement of the lambda signal of cylinder bank

Connect the wire in parallel to the lambda sensor.

Wire colour :

Wire location :

18 AD1 ( MAP ) blue For measuring the inlet manifold pressure ( MAP ).

Wire colour :

Wire location :

17 AD2 ( Valve Care ) green Optional connection.

Wire colour :

Wire location :

8 RPM purple-white For measuring the engine speed.

Wire colour :

Wire location :

2013 Page 26

Electrical connections VSI-2.0 wiring harness

Check and measure the wiring in case of changes in the cars wiring colours.

Insulate all not used wires.

3-pole connector

18 AD1 ( MAP )

27 +5 volt sensor

37 C ground blue brown red

For measuring the inlet manifold pressure (

Prins MAP sensor

Connect the 3-pole connector to the Prins MAP sensor.

2-pole blue connector

15 Tect

34 C ground

grey brown

For measuring the engine coolant temperature ( Tect ).

Connect the connector to the reducer temperature sensor.

4-pole connector

35 C ground

14 T-Gas

9 +5 Volt sensor

16 Psys

2-pole connector

24 +12V reducer lock-

off

31 Ground reducer lock-

off

4-pole connector

46 Service TxD

65 Service RxD

68 C ground brown grey red green yellow-green brown grey grey

brown

For measuring gas pressure and temperature.

Connect the connector to the filter unit sensor.

Connect the connector to the reducer lock-off valve.

Diagnose connector.

3-pole connector

3 +12V fuel switch

66 ground fuel switch

49 LIN fuel switch

Tank wiring loom

2 Power tank valve 1

12 Tank level in

26 ground tank lock off red brown yellow red blue black

Connect to the VSI switch.

Connect to the tank lock-off.

Connect the tank level gauge.

Connect to the tank lock-off.

2013 Page 27

Electrical connections VSI-2.0 wiring harness

Check and measure the wiring in case of changes in the cars wiring colours.

Some wires/connectors are only available in the Full Spec VSI loom.

Insulate all not used wires.

51 CAN 1 High

70 CAN 1 Low blue-yellow blue

Optional / insulate / Connect to EOBD diagnose connector

Pin : 6

Pin : 14

53 CAN 2 High

72 CAN 2 Low pink-yellow pink

Optional / insulate / Connect to EOBD diagnose connector

23 ground switched 2 yellow

28 +5V ( EXT ) red

29 +5V PU1 ( optional ) red

30 +5V PU2 ( optional ) red

43 +GAS injectors red

45 K-line pink

57 +12V (external) red

76 power tank valve 2

22 ground switched 1

3-pole connector

11 + manometer

12 tank level in

33 ground manometer

red brown red blue brown

Optional / insulate

Connect to the second tank lock-off valve.

Optional / insulate

Connect to the CNG high pressure gauge

Optional / insulate

2013 Page 28

Electrical connections VSI-2.0 wiring harness

Check and measure the wiring in case of changes in the cars wiring colours.

For measuring the petrol injectors :

Interrupt each petrol injector control wire (injector min)

Each VSI wire has a petrol injector / cylinder number printed on the wire, connect this wire to the corresponding petrol injector / cylinder.

Connect the bicoloured VSI measuring wire to the ecu side, ( wire code: ecu side inj ).

Connect the corresponding full coloured VSI wire to the petrol injector side ( wire code: min inj side ).

Attention:

Each bicoloured measuring wire corresponds to a specific VSI injector and petrol injector /

cylinder number. Do not interchange the wires.

VSI measure wire nr. : Full coloured / Bicoloured To interrupt petrol injector wire colour / location

121 ecu side injector 1

120 injector side inj 1 white-yellow white

Colour :

Location :

119 ecu side injector 2

118 injector side inj 2 green-yellow green

117 ecu side injector 3

116 injector side inj 3

115 ecu side injector 4

114 injector side inj 4 pink-yellow pink blue-yellow blue

Colour :

Location :

Colour :

Location :

Colour :

Location :

–GAS INJ 1

106 +GAS INJ 1

–GAS INJ 2

107 +GAS INJ 2

100

–GAS INJ 3

108 +GAS INJ 3

–GAS INJ 4

90 +GAS INJ 4 white-yellow red green-yellow red pink-yellow red blue-yellow red

VSI injector connectors:

Connector VSI-injector cylinder 1.

( timing belt side )

Connector VSI-injector cylinder 2.

Connector VSI-injector cylinder 3.

Connector VSI-injector cylinder 4.

2013 Page 29

Electrical connections RPM module 091/0236

RPM module rpm 40 ground 50 ignition + 13

solder

VSI computer ignition + battery ignition coil -



Connect the brown wire of the RPM module to the brown wire nr.50 of the VSI wiring loom.



Connect the purple-white wire of the RPM module to the purple-white wire nr.40 of the VSI wiring loom.



Connect the grey-white wire of the RPM module to the grey-white wire nr.13 of the VSI wiring loom.



Connect the purple wire of the RPM module to the ignition coil driver wire.

2013 Page 30

Electrical connections Petrol Pressure Simulator 091/0252

Engines equipped with a return less fuel system. These engines can generate trouble codes and/or have difficulties with the fuel trims(mixture) on both petrol and lpg.

Petrol Pressure Simulator

091/0252

1 2 3 4 4

12 Volt Contact + VSI wire 13

Sim Low=On VSI wire 26

Ground Battery VSI wire 50

VSI

Petrol Pressure signal sensor side

PETROL

PRESSURE

SENSOR

0-5 Volt

Petrol Pressure signal ECU side

Interrupt the petrol pressure signal wire

PETROL ECU

Brands: Mainly brands who are connected with Ford technologies like:

* Ford models from 2003/2004

* Jaguar models from 2003/2004

* Some Volvo models from 2003

Connections and Set-up

Connect the PPS module according the shown schematic. Measure the voltage, on petrol, for the blue wire

(pressure sensor signal wire) when the engine is idling. Or read the actual petrol pressure when you have the disposal of a scan tool which can read the actual petrol system pressure.

Next we have to setup the same Voltage (pressure) when running on LPG via de pot meter. The pot meter is accessible when you remove the small protection cover of the module.

2013 Page 31

Electrical connections Dual Sensor Interface (DSI)

Dual Sensor Interface

080/70066

Hall level indicator

080/70065

PRINS

BLACK BLUE

GROUND SIGNAL

PRINS

BLACK BLUE

GROUND SIGNAL

Tank lock off valve

DSI connection:

Connect the interface wiring according to drawing, all blue and black wires are exchangeable since they are internally connected.

The DSI makes it possible to connect two level sensors to one lpg switch.

The DSI will always show the highest lpg level on the switch.

2013 Page 32

Electrical connections CNG Prins Timing Optimizer (PTO)

Connect the PTO module according the shown diagram.

Check if the latest software is downloaded in the PTO!

Diagram CNG PTO wiring

2013 Page 33

Prins Turbo / MAP sensor

2013 Page 34

Diagram 5 LPG Base layout VSI 4 cylinder connector

Diagram 6 LPG Base layout VSI 4 cylinder solder

Diagram 7 LPG Base layout VSI 5 cylinder

Diagram 8 LPG Base layout VSI 6 cylinder connector

Diagram 9 LPG Base layout VSI 6 cylinder solder

Diagram 10 LPG Base layout VSI 8 cylinder connector

Diagram 11 LPG Base layout VSI 8 cylinder solder

Diagram 12 CNG Base layout

Diagram 13 VSI-2.0 LPG Base layout

Diagram 14 VSI-2.0 MAP LPG Base layout

injection module

4 cylinder

180/70024

4-CYLINDER CONNECTOR INJECTION MODULE VSI 1 REV.B

06-06-2005

blue-yellow 36 ecu side 4 blue min inj side 4 pink-yellow 37 ecu side 3 pink min inj side 3 green-yellow 38 ecu side 2 green min inj side 2 white-yellow 39 ecu side 1 white min inj side 1

VSI-4 computer

PETROL INJECTORS

Make sure that the polarity of the petrol injectors and the VSI connectors are simular !

petrol ecu

Diagram 13 Injection module 4-cylinder ( 180/70024 connector )

injection module

4 cylinder

180/70024

4-CYLINDER SOLDER INJECTION MODULE VSI 1 REV.B

06-06-2005

petrol ecu blue-yellow 36 ecu side 4 blue min inj side 4 petrol ecu pink-yellow 37 ecu side 3 pink min inj side 3 petrol ecu green-yellow 38 ecu side 2 green min inj side 2 petrol ecu white-yellow 39 ecu side 1 white min inj side 1

+ +

VSI-4 computer

1 2 3

PETROL INJECTORS

Diagram 14 Injection module 4-cylinder ( 180/ 70024 solder )

injection module

6 cylinder

180/70026

6-CYLINDER CONNECTOR INJECTION MODULE VSI 1 REV.B

06-06-2005

brown-yellow 10 ecu side 6 brown min inj side 6 grey-yellow 11 ecu side 5 grey min inj side 5 blue-yellow 36 ecu side 4 blue min inj side 4 pink-yellow 37 ecu side 3 pink min inj side 3 green-yellow 38 ecu side 2 green min inj side 2 white-yellow 39 ecu side 1 white min inj side 1

VSI-8 computer

PETROL INJECTORS

-

Make sure that the polarity of the petrol injectors and the VSI connectors are simular !

petrol ecu

Diagram 15 Injection module 6-cylinder ( 180/70026 connector )

-

petrol ecu

-

petrol ecu

injection module

6 cylinder

180/70026

6-CYLINDER SOLDER INJECTION MODULE VSI 1 REV.B

06-06-2005

brown-yellow 10 ecu side 6 brown min inj side 6 grey-yellow 11 ecu side 5 grey min inj side 5

blue-yellow 36 ecu side 4 blue min inj side 4 petrol ecu pink-yellow 37 ecu side 3 pink min inj side 3 petrol ecu green-yellow 38 ecu side 2 green min inj side 2 petrol ecu white-yellow 39 ecu side 1 white min inj side 1

petrol ecu

VSI-8 computer

PETROL INJECTORS

1 2 3 4 5 6

Diagram 16 Injection module 6-cylinder ( 180/70026 solder )

8 cylinder injection module

180/70024

VSI-8 computer

8 cylinder injection module

180/70024

8-CYLINDER CONNECTOR INJECTION MODULE VSI 1 REV.B

06-06-2005

petrol ecu

1 3 5 7

PETROL INJECTORS white min inj side 1 white-yellow 39 ecu side 1 pink min inj side 3 pink-yellow 37 ecu side 3 grey min inj side 5 grey-yellow 11 ecu side 5 light blue min inj side 7 light blue-yellow 9 ecu side 7 red-yellow 8 ecu side 8 red min inj side 8 brown-yellow 10 ecu side 6 brown min inj side 6 blue-yellow 36 ecu side 4 blue min inj side 4 green-yellow 38 ecu side 2 green min inj side 2

PETROL INJECTORS

Make sure that the polarity of the petrol injectors and the VSI connectors are simular !

petrol ecu

Diagram 17 Injection module 8-cylinder ( 180/ 70024 connector)

8 cylinder injection module

180/70024

VSI-8 computer

8 cylinder injection module

180/70024

8-CYLINDER SOLDER INJECTION MODULE VSI 1 REV.B

06-06-2005

PETROL INJECTORS

1 3

white min inj side 1 white-yellow 39 ecu side 1 petrol ecu pink min inj side 3 pink-yellow 37 ecu side 3 petrol ecu grey min inj side 5 grey-yellow 11 ecu side 5 petrol ecu light blue min inj side 7 light blue-yellow 9 ecu side 7

petrol ecu

PETROL

ECU

red-yellow 8 ecu side 8 red min inj side 8 petrol ecu brown-yellow 10 ecu side 6 brown min inj side 6 petrol ecu blue-yellow 36 ecu side 4 blue min inj side 4 petrol ecu green-yellow 38 ecu side 2 green min inj side 2

2 4 6

PETROL INJECTORS

petrol ecu

Diagram 18 Injection module 8-cylinder ( 180/70024 solder)

4 & 8 CYLINDER REPAIR INJECTION MODULE VSI 1 REV.B 180/30024

06-06-2005

4 cylinder

8 cylinder module A

8 cylinder module B

REPAIR

MODULE

wire

A B C D

1 2 3 4

1 3 5 7

2 4 6 8

injection module

26 SIMU LOW=ON

50 MAIN GROUND

ECU SIDE A

ECU SIDE B

ECU SIDE C

ECU SIDE D

Diagram 19 Repair module 180/30024 (4-8 cylinder)

INJ SIDE A

ECU SIDE A

INJ SIDE B

ECU SIDE B

INJ SIDE C

ECU SIDE C

INJ SIDE D

ECU SIDE D

Diagram 20 connector injection module 091/71004

Diagram 21 injection module 091/71006

NEW TYPE

injection module

180/70024

26 50

VSI computer

13 27 50 54

white-yellow 39 ecu side 1 white min inj side 1 blue-yellow 36 ecu side 4 blue min inj side 4 pink-yellow 37 ecu side 3 pink min inj side 3 petrol ecu green-yellow 38 ecu side 2 green min inj side 2 petrol ecu

REPLACING THE INJECTION MODULE VSI 1 REV.B BY OLD TYPE

06-06-2005

petrol ecu petrol ecu white-yellow 39 ecu side 1 white min inj side 1 petrol ecu petrol ecu green min inj side 2 petrol ecu green-yellow 38 ecu side 2 pink-yellow 37 ecu side 3 pink min inj side 3 petrol ecu blue-yellow 36 ecu side 4 blue min inj side 4

INTERRUPT THE POWER

FEED OF EACH INJECTOR

1 4

2 3

PETROL INJECTORS

2 3

PETROL INJECTORS insulate

26 SIMU LOW=ON

26 50

VSI computer

13 27 50 54

Change wiring when replacing module 180/30024 into module 091/0145.

Change VSI wires 26, 27 and 54 and connect the measuring wires to module 091/0145

Extend VSI wires 26, 27 and 54.

Black

Red

Black

Red

Black

Red

Black

Red

OLD TYPE

Injection module

091/0145

Diagram 22 Re placing the injection module 180/70024 → 091/0145

1 2 3

Petrol injectors

VSI LPG / CNG ECU manufacturer : Prins version : software : injection module

180/70024

39 38 37 36 54 26 27 13

+ i nsulate

B5 injection module with connector

091/71004

C2 module wiring loom

080/71996

A2 A3 A4 A5 A6 A7 C8 B8 B1

= solder insulate

1 2 3

Petrol injectors

VSI LPG / CNG ECU manufacturer : Prins version : software :

39 38 37 36 54 26 27 13 injection module with connector

091/71004 module wiring loom

080/71996

A8 pin

C4 injection module / wiring loom connected to wire color print on wire vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector petrol injector petrol injector vsi ecm white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow red-white white green pink blue grey brown brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4 min inj side 5 min inj side 6

54 inj. mod. ground

Diagram 23

Replacing the injection module 180/70024 → 091/71004 (4 cylinder)

1 2 3 4

Petrol injectors

VSI LPG / CNG ECU manufacturer : Prins version : software :

5 6 injection module

180/70026

39 38 37 36 11 10 54 26 27 13

B5 injection module with connector

091/71006

C3 module wiring loom

080/71996

A2 A3 A4 A5 A6 A7 C8 B8 B1

= solder

1 2 3 4

Petrol injectors

VSI LPG / CNG ECU manufacturer : Prins version : software :

5 6

39 38 37 36 11 10 54 26 27 13 injection module with connector

091/71006 module wiring loom

080/71996

B4 pin

A8 injection module / wiring loom connected to wire color print on wire vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector petrol injector petrol injector vsi ecm white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow red-white white green pink blue grey brown brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4 min inj side 5 min inj side 6

54 inj. mod. ground

Diagram 24

Replacing the injection module 180/70026 → 091/71006 (6 cylinder)

injection module

180/70024 injection module

180/70024

1 2 3

Petrol injectors

5 6 7

Petrol injectors

VSI LPG / CNG ECU manufacturer : Prins version : software :

39 38 37 36 54 26 27 13 11 10 9 8 insulate

B5 injection module with connector

091/71004

B2 module wiring loom

080/71996

A2 A3 A4 A5 A6 A7 C8 B8 B1

= solder insulate

2 3 4 Petrol injectors

VSI LPG / CNG ECU manufacturer : Prins version : software :

39 38 37 36 54 26 27 13

+ insulate

5 6 7 8 Petrol injectors

= solder injection module with connector

091/71004 module wiring loom

080/71996

B5 injection module with connector

091/71004

B2 module wiring loom

080/71996

A2 A3 A4 A5 A6 A7 C8 B8 B1 insulate

11 10 9 8

B4 pin

A6 injection module / wiring loom connected to wire color print on wire vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector petrol injector petrol injector vsi ecm white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow red-white white green pink blue grey brown brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4 min inj side 5 min inj side 6

54 inj. mod. ground

Diagram 25

Replacing the injection module 180/70024 → 091/71004 (8 cylinder)

180/70014 VSI Wiring diagram 4 cylinder LPG (with connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : version : software :

Engine control relay

Petrol injectors

1 2

1 2 1 2 1 2 injection module

cylinder 1-2-3-4 t°

Oxygen sensor 1

Bank 1

Hall sensor engine RPM

46 40 39 38 37 36 54 26 27 13

VSI LPG ECU manufacturer : Prins version : software :

43 42 15 18 17

VSI injectors

34 33 32 31 30 50 35 injector fuse

2 reducer

1 lock-off valve

1 tank lock-off valve tank gauge

48 12 49 fuel switch

22 23

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector contra connector

1 2 3 4

25 51 main fuse

31 Battery ground pin

2 vsi wire

ground sealed

sealed sealed sealed sealed sealed sealed sealed sealed sealed pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP sealed color black yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

+ LPG injectors ecu side inj 4 ecu side inj 3 ecu side inj 2 ecu side inj 1 color grey grey red red-white grey-white black blue-yellow pink-yellow green-yellow white-yellow red black blue-yellow pink-yellow green-yellow white-yellow

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position sealed lambda bank 1

sealed beeper low switching diagnose LED reducer valve ground

main ground tank valve ground

diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange black orange brown brown brown brown brown red red red

pin

53 vsi wire

sealed power fuel indication

power tank valve power reducer valve

INJ simulator ground

sealed sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Designed :

Checked by :

Approved by :

Version nr. / date

Description :

T.S. 23-04-2007

1 / 29-05-2007

4 cyl.

Sheet : 1/1

Diagram 26 LPG wiring 180/70014

180/70004 VSI wiring diagram 4 cylinder LPG (without connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : version : software :

Engine control relay main fuse injection module

cylinder 1-2-3-4 t°

Oxygen sensor 1

Bank 1

Hall sensor engine RPM

1 2 3 4

Petrol injectors

46 40 39 38 37 36 54 26 27 13

VSI LPG ECU manufacturer : Prins version : software :

25 51

48 12 49 43 42 15 18 17 22 23

VSI injectors

34 33 32 31 30 50 injector fuse

2 reducer

1 lock-off valve

1 tank lock-off valve tank gauge

31 Battery ground fuel switch

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector

1 2 3 4 contra connector pin vsi wire

ground sealed sealed sealed sealed sealed sealed sealed sealed sealed sealed pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP

sealed color black yellow grey-white black grey blue light

green red red

pin

26 vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position sealed lambda bank 1 sealed beeper low switching diagnose LED

reducer valve ground main ground tank valve ground diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Designed :

Checked by :

Approved by :

Version nr. / date

Description :

Sheet :

T.S. 23-04-2007

R.K. 23-04-2007

1 / 29-05-2007

4 cyl.without conn.

1/1

Diagram 27 LPG wiring 180/70004

180/70016 VSI wiring diagram 6 cylinder LPG (with connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : version : software :

Engine control relay

Petrol injectors

1 2 3

1 2 1 2 1 2 injection module

1-2-3-4-5-6

4 5 6

1 2 1 2 1 2 t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

46 45 40 39 38 37 36 11 10 54 26 27 13

VSI LPG ECU manufacturer : Prins version : software :

43 42 15 18 17 22 23

VSI injectors

34 33 32 31 30 5 4 50 35 7 53

2 reducer

1 lock-off valve

1 tank lock-off valve tank gauge

48 12 49 fuel switch

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector contra connector

1 2 3 4

25 51

31 Battery ground pin vsi wire

ground sealed sealed

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors sealed sealed ecu side inj 6 ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt

Psys

+5 Volt

MAP

sealed color black brown-yellow grey-yellow red black brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1

sealed beeper low switching diagnose LED reducer valve ground

main ground tank valve ground

diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve power reducer valve

INJ simulator ground

sealed sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Designed : T.S. 23-04-2007

Checked by :

Approved by :

Version nr. / date

Description :

Sheet :

R.K. 23-04-2007

1 / 29-05-2007

6 cyl.with conn.

1/1

Diagram 28 LPG wiring 180/70016 main fuse

180/70006 VSI wiring diagram 6 cylinder LPG (without connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : version : software :

Engine control relay main fuse injection module

1-2-3-4-5-6 t°

Oxygen sensor 1

Bank 1 t°

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

46 45 40

1 2 3 4

Petrol injectors

5 6

39 38 37 36 11 10 54 26 27 13

VSI LPG ECU manufacturer : Prins version : software :

48 12 49

43 42

15 18 17 22 23 6

VSI injectors

34 33 32 31 30 5 4 50 35 7 53

2 reducer

1 lock-off valve

31 Battery ground

1 tank lock-off valve tank gauge fuel switch

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector contra connector

1 2 3 4

25 51 pin vsi wire

ground sealed sealed

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors sealed sealed ecu side inj 6 ecu side inj 5 pulse fuel switch

ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt

Psys

+5 Volt

MAP

sealed color black brown-yellow grey-yellow red black brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed beeper low switching diagnose LED reducer valve ground main ground tank valve ground diagnose ground switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white black orange brown brown brown brown brown red red red brown brown brown grey green orange-white orange

pin vsi wire

sealed power fuel indication power tank valve power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Designed :

T.S. 23-04-2007

R.K. 23-04-2007 Checked by :

Approved by :

Version nr. / date

R.K. 23-04-2007

1 / 29-05-2007

Description :

Sheet :

6 cyl. without conn.

1/1

Diagram 29 LPG wiring 180/70006

180/70018 VSI wiring diagram 8 cylinder LPG (with connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : version : software :

1 2

2 3

1 2 1 2

Petrol injectors

1 2 injection module

cylinder 1-2-3-4

1 2

6 7

1 2 1 2

1 2 injection module

cylinder 5-6-7-8

Engine control relay main fuse t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

46 45 40 39 38 37 36 54 26 27 13

VSI injectors

34 33 32 31 30 5 4 3 2 50 35 7 53

2 reducer

1 lock-off valve

31 Battery ground

1 tank lock-off valve tank gauge

48 12 49 fuel switch pin vsi wire

ground

G INJ OUT 8

G INJ OUT 7

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors ecu side inj 8 ecu side inj 7 ecu side inj 6

ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt

MAP

sealed color black red-yellow light blue-yellow brown-yellow grey-yellow red black red-yellow light blue-yellow brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed

beeper low switching diagnose LED reducer valve ground main ground

tank valve ground diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Designed :

Checked by :

Approved by :

Version nr. / date

Description :

Sheet :

T.S. 23-04-2007

1 / 29-05-2007

8 cyl. with conn.

1/1

VSI LPG ECU manufacturer : Prins version : software :

11 10 9 8

43 42 15 18 17 22 23

25 51

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector contra connector

1 2 3 4

Diagram 30 LPG wiring 180/70018

180/70008 VSI wiring diagram 8 cylinder LPG (without connectors)

30 battery +12V

15 ignition switch t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

1 2 3

Petrol injectors

4 injection module

cylinder 1-2-3-4

Petrol ECU manufacturer : version : software : injection module

cylinder 5-6-7-8

Engine control relay main fuse

5 6 7

Petrol injectors

46 45 40 39 38 37 36 54 26 27 13

VSI LPG ECU manufacturer : Prins version : software :

11 10 9 8

15 18 17 22 23 6

31 Battery ground

VSI injectors

34 33 32 31 30 5 4 3 2 50 35 7 53

2 reducer

1 lock-off valve

1 tank lock-off valve tank gauge

48 12 49 fuel switch

43 42

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector contra connector

1 2 3 4 pin vsi wire

ground

G INJ OUT 8

G INJ OUT 7

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors ecu side inj 8 ecu side inj 7 ecu side inj 6 ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP sealed color black red-yellow light blue-yellow brown-yellow grey-yellow red black red-yellow light blue-yellow brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position

lambda bank 2 lambda bank 1 sealed beeper low switching

diagnose LED reducer valve ground main ground tank valve ground

diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white black orange brown brown brown brown brown red red red brown brown brown grey green orange-white orange

pin vsi wire

sealed power fuel indication

power tank valve

power reducer valve

INJ simulator ground

sealed sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Designed :

Checked by :

Approved by :

Version nr. / date

Project name :

Sheet :

T.S. 23-04-2007

R.K. 23-04-2007

1 / 29-05-2007

8 cyl. without conn.

1/1

Diagram 31 LPG wiring 180/70008

25 51

080/72040 VSI wiring diagram 4 cylinder LPG (without connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Engine control relay t°

Oxygen sensor 1

Bank 1

Hall sensor engine RPM

VSI injectors

34 33 32 31 30 50 injection module

cylinder 1-2-3-4

A2 A3 A4 A5 C8 B8 B1

Injection module manufacturer : Prins part number : 091/71004 version : A

1 2 3 4

Petrol injectors

35 53

39 38 37 36 54 26 27 13

VSI ECU manufacturer : Prins part number : 080/70001 version : C / D software : S209 / S211 injector fuse

10 A

25 51 main fuse

2 A

48 12 49 43 42 15 18 17 22 23

2 reducer

1 lock-off valve

1 tank lock-off valve fuel switch

2 1 t°

T-ect sensor

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor diagnosis connector contra connector

1 2 3 4 tank gauge

31 Battery ground

A6 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector vsi ecm injection module white-yellow green-yellow pink-yellow blue-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow red-white white green pink blue brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4

54 inj. mod. ground

pin vsi wire

ground sealed sealed sealed sealed sealed sealed sealed sealed sealed sealed pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP

sealed color black yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

+ LPG injectors ecu side inj 4 ecu side inj 3 ecu side inj 2 ecu side inj 1 color grey grey red red-white grey-white black blue-yellow pink-yellow green-yellow white-yellow red green-yellow blue-yellow pink-yellow green-yellow white-yellow

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position sealed lambda bank 1 sealed

tank valve ground diagnose ground

switch ground

+12 volt fuel switch

beeper low switching diagnose LED reducer valve ground main ground

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve

power reducer valve

INJ simulator ground

sealed sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr :

Description :

Checked by / date

Approved by / date

Revision by / date

Sheet :

080/72040

4 cyl. without conn.

T.S. 23-04-2007

R.K. 23-04-2007

R.K. 03-07-2007

1/1

Diagram 32 LPG wiring 080/72040

080/72045 VSI Wiring diagram 4 cylinder LPG (with connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Engine control relay

Petrol injectors

1 2

1 2 1 2 1 2

A2 A3 A4 A5 C8 B8 B1

Injection module manufacturer : Prins part number : 091/71004 version : A t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

(optional)

Hall sensor engine RPM injector fuse

10 A

25 51 main fuse

2 A

46 45 40

VSI injectors

34 33 32 31 30 50 1 14 29 35

2 reducer

1 lock-off valve

1 tank lock-off valve

39 38 37 36 54 26 27 13

VSI ECU manufacturer : Prins part number : 080/70001 version : C / D software : S209 / S211

48 12 49 44 16 43 42 15 18 17 fuel switch

22 23

TPS

(optional)

MAP

(optional)

2 1

MAP ground sensor

(optional)

1 2 3 4

+ 5V sensor

(optional) diagnosis connector

1 2 3 4 contra connector t°

T-ect sensor

P t°

Filter unit

Psys / T-lpg sensor tank gauge

31 Battery ground

injection module

C8 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector vsi ecm white-yellow green-yellow pink-yellow blue-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow red-white white green pink blue brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4

54 inj. mod. ground

pin

6 vsi wire

ground sealed sealed sealed sealed sealed

sealed sealed sealed sealed sealed pulse fuel switch

ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP

sealed color black yellow grey-white black grey blue light

green red red

31 pin

25 vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin

43 vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed beeper low switching diagnose LED

reducer valve ground main ground tank valve ground diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr :

Description :

080/72045

4 cyl. with conn.

Checked by / date

Approved by / date

Revision / by / date

Sheet :

TS / 23-04-07

RK / 26-10-07

-1 JT / 26-10-07

1/1

Diagram 33 LPG wiring 080/72045

080/72050 VSI wiring diagram 6 cylinder LPG (without connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Engine control relay t°

Oxygen sensor 1

Bank 1 t°

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

B5 injection module

1-2-3-4-5-6

A2 A3 A4 A5 A6 A7 C8 B8 B1

Injection module manufacturer : Prins part number : 091/71006 version : A

46 45 40

1 2 3 4

Petrol injectors

34 33 32 31 30 5 4 50 1 14 29 35 7 53

39 38 37 36 11 10 54 26 27 13

VSI ECU manufacturer : Prins part number : 080/70003 version : C / D software : S209 / S211 injector fuse

10 A

25 51 main fuse

2 A

48 12 49 44 16 43 42 15 18 17 22 23

VSI injectors

2 reducer

1 lock-off valve

1 tank lock-off valve fuel switch

TPS

(optional)

MAP

(optional)

2 1 t°

T-ect sensor

MAP ground sensor

(optional)

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor

+ 5V sensor

(optional) diagnosis connector

1 2 3 4 contra connector tank gauge

31 Battery ground

A4 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector petrol injector petrol injector vsi ecm injection module white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow red-white white green pink blue grey brown brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4 min inj side 5 min inj side 6

54 inj. mod. ground

pin vsi wire

ground sealed sealed

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors sealed sealed ecu side inj 6

ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt

Psys

+5 Volt MAP

sealed color black brown-yellow grey-yellow red green-yellow brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed beeper low switching diagnose LED reducer valve ground main ground tank valve ground diagnose ground switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve

power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr :

Description :

Checked by / date

Approved by / date

Revision by / date

Sheet :

080/72050

6 cyl. without conn.

T.S. 23-04-07

R.K. 26-10-07

-1 / J.T. 26-10-07

1/1

Diagram 34 LPG wiring 080/72050

080/72055 VSI wiring diagram 6 cylinder LPG (with connectors)

30 battery +12V

15 ignition switch

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Engine control relay

Petrol injectors

1 2 3

1 2 1 2 1 2

4 5 injection module

1-2-3-4-5-6

1 2

A2 A3 A4 A5 A6 A7 C8 B8 B1

Injection module manufacturer : Prins part number : 091/71006 version : A

1 2

1 2 t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

46 45 40

VSI injectors

34 33 32 31 30 5 4 50 1 14 29 35 7 53

2 reducer

1 lock-off valve

1 tank lock-off valve tank gauge

39 38 37 36 11 10 54 26 27 13

48 12 49

VSI ECU manufacturer : Prins part number : 080/70003 version : C / D software : S209 / S211

44 16 43 42 15 18 17

Injector fuse

10 A

25 51

Main fuse

22 23 fuel switch

TPS

(optional)

MAP

(optional)

2 1 t°

T-ect sensor

MAP ground sensor

(optional)

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor

+ 5V sensor

(optional) diagnosis connector

1 2 3 4 contra connector

31 Battery ground

A6 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector petrol injector petrol injector vsi ecm injection module white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow grey-yellow brown-yellow red-white white green pink blue grey brown brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

11 ecu side 5

10 ecu side 6

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4 min inj side 5 min inj side 6

54 inj. mod. ground

pin vsi wire

ground sealed sealed

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors sealed sealed

ecu side inj 6 ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP

sealed color black brown-yellow grey-yellow red green-yellow brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin

28 vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed beeper low switching diagnose LED reducer valve ground

main ground tank valve ground diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication

power tank valve power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr : 080/72055

Description :

Checked by / date

Approved by / date

Revision by / date

Sheet :

6 cyl. with conn.

T.S. 23-04-07

R.K. 26-10-07

-1 / J.T. 26-10-07

1/1

Diagram 35 LPG wiring 080/72055

080/72060 VSI wiring diagram 8 cylinder LPG (without connectors)

30 battery +12V

15 ignition switch

Injection module manufacturer : Prins part number : 091/71004 version : A

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Injection module manufacturer : Prins part number : 091/71004 version : A

Engine control relay injection module

cylinder 1-2-3-4

A2 A3 A4 A5 C8 B8 B1 injection module

cylinder 5-6-7-8

B8 C8 A2 A3 A4 A5 B1 t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

1 2 3

Petrol injectors

6 7

Petrol injectors

11 10 9 8

Injector fuse

15 A

25 51

Main fuse

2 A

46 45 40 39 38 37 36 54 26 27 13

48 12 49

VSI ECU manufacturer : Prins part number : 080/70003 version : C / D software : S209 / S211

44 16 43 42 6

31 Battery ground

VSI injectors

34 33 32 31 30 5 4 3 2 50 1 14 29 35 7 53

2 reducer

1 lock-off valve

1 tank lock-off valve tank gauge fuel switch

15 18 17 22 23

TPS

(optional)

MAP

(optional)

2 1 t°

T-ect sensor

MAP ground sensor

(optional)

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor

+ 5V sensor

(optional) diagnosis connector contra connector

1 2 3 4

injection module A

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4

54 inj. mod. ground injection module B

C8 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector vsi ecm grey-yellow brown-yellow lightblue-yellow red-yellow

11 ecu side 5

10 ecu side 6

9 ecu side 7

8 ecu side 8 grey-white grey-yellow brown-yellow lightblue-yellow red-yellow

13 ingnition plus

11 ecu side 5

10 ecu side 6

9 ecu side 7

8 ecu side 8 red-white grey brown light blue red brown

26 inj. mod. command min inj side 5 min inj side 6 min inj side 7 min inj side 8

54 inj. mod. ground

pin

9 vsi wire

ground

G INJ OUT 8

G INJ OUT 7

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors ecu side inj 8 ecu side inj 7

ecu side inj 6 ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP sealed color black red-yellow light blue-yellow brown-yellow grey-yellow red green-yellow red-yellow light blue-yellow brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin

39 vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin

50 vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed beeper low switching diagnose LED reducer valve ground main ground

tank valve ground

diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin

53 vsi wire

sealed power fuel indication power tank valve

power reducer valve

INJ simulator ground

sealed sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr :

Description :

080/72060

8 cyl. without conn.

Checked by / date

Approved by / date

Revision by / date

Sheet :

T.S. 23-04-07

R.K. 26-10-07

-1 / J.T. 26-10-07

1/1

Diagram 36 LPG wiring 080/72060

080/72065 VSI wiring diagram 8 cylinder LPG (with connectors)

30 battery +12V

15 ignition switch t° t°

Oxygen sensor 1

Bank 1

Oxygen sensor 1

Bank 2

Hall sensor engine RPM

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Engine control relay

Petrol injectors

1 2

2 3 4

1 2 1 2

Injection module manufacturer : Prins part number : 091/71004 version : A

1 2 injection module

cylinder 1-2-3-4

A2 A3 A4 A5 C8 B8 B1

5 6 7 8

1 2 1 2 1 2

Injection module manufacturer : Prins part number : 091/71004 version : A

1 2 injection module

cylinder 5-6-7-8

B8 C8 A2 A3 A4 A5 B1

46 45 40 39 38 37 36 54 26 27 13

48 12 49

VSI ECU manufacturer : Prins part number : 080/70003 version : C / D software : S209 / S211

44 16 43 42 15 18 17

11 10 9 8

Injector fuse

15 A

25 51

Main fuse

2 A

22 23 6

VSI injectors

34 33 32 31 30 5 4 3 2 50 1 14 29 35 7 53

2 reducer

1 lock-off valve

31 Battery ground

1 tank lock-off valve tank gauge fuel switch

TPS

(optional)

MAP

(optional)

2 1 t°

T-ect sensor

MAP ground sensor

(optional)

1 2 3 4

P t°

Filter unit

Psys / T-lpg sensor

+ 5V sensor

(optional) diagnosis connector contra connector

1 2 3 4

injection module A

B1 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector vsi ecm white-yellow green-yellow pink-yellow blue-yellow grey-white white-yellow green-yellow pink-yellow blue-yellow red-white white green pink blue brown

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4

54 inj. mod. ground injection module B

B1 vsi ecu vsi ecu vsi ecu vsi ecu vsi ecu petrol ecu petrol ecu petrol ecu petrol ecu vsi ecu petrol injector petrol injector petrol injector petrol injector vsi ecm grey-yellow brown-yellow lightblue-yellow red-yellow grey-white grey-yellow brown-yellow lightblue-yellow red-yellow red-white grey brown light blue red brown

11 ecu side 5

10 ecu side 6

9 ecu side 7

8 ecu side 8

13 ingnition plus

11 ecu side 5

10 ecu side 6

9 ecu side 7

8 ecu side 8

26 inj. mod. command min inj side 5 min inj side 6 min inj side 7 min inj side 8

54 inj. mod. ground

pin vsi wire

ground

G INJ OUT 8

G INJ OUT 7

G INJ OUT 6

G INJ OUT 5

G INJ B plus

+ LPG injectors ecu side inj 8

ecu side inj 7 ecu side inj 6 ecu side inj 5 pulse fuel switch ignition + ground

T-LPG

lpg temp.

MAP

Psys

+5 Volt Psys

+5 Volt MAP

sealed color black red-yellow light blue-yellow brown-yellow grey-yellow red green-yellow red-yellow light blue-yellow brown-yellow grey-yellow yellow grey-white black grey blue light

green red red

pin vsi wire

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery inj. mod. command ignition + sealed

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

G INJ A plus

pin vsi wire

RPM engine speed sealed

ECT sensor ground

MAP sensor ground

Psys sensor ground

ECT coolant temp.

TPS throttle position lambda bank 2

lambda bank 1 sealed beeper low switching diagnose LED

reducer valve ground main ground tank valve ground diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery color purple-white brown brown brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve power reducer valve

INJ simulator ground

sealed

sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr :

Description :

Checked by / date

Approved by / date

Revision by / date

Sheet :

080/72065

8 cyl. with conn.

T.S. 23-04-07

R.K. 26-10-07

-1 / J.T. 26-10-07

1/1

Diagram 37 LPG wiring 080/72065

095/72045

CNG Wiring diagram 4 cylinder connector CNG NOT RELEASED!

30 battery +12V

15 ignition switch t°

Oxygen sensor 1

Bank 1 t°

Oxygen sensor 2

Bank 2

Hall sensor engine RPM or Tacho signal

Petrol ECU manufacturer : n.a.

version : n.a.

software : n.a.

Engine control relay

Optional PTO use

1 2 3 4

Spare contra connector

1 2 3 4

Spare connector

1 2

2 3 4

1 2 1 2

Injection module manufacturer : Prins part number : 091/71004 version : A

1 2 injection module

cylinder 1-2-3-4

A2 A3 A4 A5 C8 B8 B1

Petrol injectors

Injector fuse

10 A

39 38 37 36 54 26 27 13 25 51

Main fuse

2 A

46 45 40

VSI ECU manufacturer : Prins part number : 080/70001 version : C / D software :

VSI injectors

34 33 32 31 30 50 1 14 29 35

Optional

2 tank lock-off valve

Main lock-off

1 valve

31 Battery ground

1 2 3

P pressure gauge

WIKA

48 12 49 fuel switch

IGPS CNG

43 42 15 18 17 16 22 23

2 1 t°

T-ect sensor

1 2 3 4

1 2 3

Map/Turbo connector diagnosis connector

P t°

Filter unit

Psys / T-cng sensor

1 2 3

Map/Turbo contra connector

Optional

Map/Turbo sensor use contra connector

1 2 3 4

injection module

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

13 ingnition plus

39 ecu side 1

38 ecu side 2

37 ecu side 3

36 ecu side 4

26 inj. mod. command min inj side 1 min inj side 2 min inj side 3 min inj side 4

54 inj. mod. ground

pin vsi wire

ground sealed sealed sealed sealed sealed sealed sealed sealed sealed sealed pulse fuel switch ignition +

ground

T-Gas

cng temp.

MAP

Psys

+5 Volt

P/T sys

+5 Volt MAP

sealed color black yellow grey-white black grey blue light

green red red

pin vsi wire

color

sealed sealed

RS232 TxD

RS232 RxD sealed

+12 volt battery

26 Inj. mod.command

ignition + sealed red red-white grey-white

G INJ A ground

G INJ OUT 4

G INJ OUT 3

G INJ OUT 2

G INJ OUT 1

+ G INJ A OUT

+ G INJ A IN ecu side inj 4 ecu side inj 3 ecu side inj 2 ecu side inj 1 grey grey black blue-yellow pink-yellow green-yellow white-yellow red green-yellow blue-yellow pink-yellow green-yellow white-yellow

pin vsi wire

color

RPM engine speed sealed

ECT sensor ground

P/Tsys sensor ground purple-white brown

MAP sensor ground brown

ECT coolant temp.

TPS throttle position lambda bank 2 lambda bank 1 sealed beeper low switching

diagnose LED main valve ground main ground tank valve ground

diagnose ground

switch ground

+12 volt fuel switch

+12 volt diagnose

+12 volt battery brown grey green orange-white orange black orange brown brown brown brown brown red red red

pin vsi wire

sealed power fuel indication power tank valve power main valve

INJ module ground

sealed sealed color green-yellow red green-yellow brown

Prins Alternative Fuel Systems

Project name :

Part nr : 095/72045

Description :

CNG 4 cyl. conn.

JT / 18-09-07

Checked by / date

Approved by / date

Revision / by / date

Sheet : 1/1

Diagram 38 CNG wiring 095/72045

Diagram 39 VSI-2.0 wiring 191/040002

Trouble code chart LPG

Trouble code

100

101

102

110

111

120

121

150

160

Definition

Lambda to long to rich.

Lambda to long to lean.

Lambda to long to lean during open loop.

T-ECT>= 171°C

T-ECT>= -40°C

T-LPG>= 171°C

T-LPG>= -40°C

Psys<= Low_Level

ECM-VSI not activated

Check / solution

Check when operating on petrol and LPG that there is good lambda signal movement.

Check if the ECT sensor (blue) in the reducer is connector is connected to ground.

Check if the ECT sensor (blue) in the reducer has a power connection.

Check the ground connection of the Pressure/temperature sensor in the filter unit.

Check the power connection of the Pressure/temperature sensor in the filter unit.

Based on a pressure drop in the system, this can be caused by an empty LPG tank, incorrect solenoid valve, polluted filter or incorrectly adjusted pressure.

Activate the LPG computer with the diagnostic program, using the F11 function key.

LPG computer circuit board to hot, replace the VSI computer in a cooler area.

Check board voltage / alternator output and condition of the battery.

Injector current to high, check for short circuiting

180 T-Board >= 90°C

181 Battery voltage to high

210-220-230-240-250-260-270-280 VSI injector overload

211-221-231-241-251-261-271-281 VSI injector

310

Injector current to low, check for bad connections. noload

Adjusted pressure on idle out of range parameter “ Idle Level “

311 Check parameter settings, contact Prins Autogassystemen.

320

Programm error during flahing the memory

Psys voltage to low

321 Psys voltage to high

Check the ground connection of the Pressure/temperature sensor in the filter unit.

Check the power connection of the Pressure/temperature sensor in the filter unit.

322

330

340

341 div. div. div. div. div. div.

Psys > 3,5 Bar Check the coolant temperature (T-ect) and the evaporator for leakage of the first stage.

Contact Prins Autogassystemen. unexpected parameter change reducer warms up to slow

Gas leakage, system pressure is less then

1.25 bar after 4 hours when the engine is not running

System switches to LPG but engine stalls immediately.

Fault codes when turning the ignition off ( key out the ignition )

Check the water connections / circuit.

Check the system for gas leakage. running on all cylinders. Engine runs good on idle.

Swit ch LED’s don’t lit up

LPG tank empty ?

Lock-off valves open ?

No injection timing on LPG ( 0 Msec.) Check the injection module.

The LPG system switches constantly - Check coolant system for air. between LPG and Petrol

Engine hesitates on high revs, and not

- T-ect sensor in the evaporator malfunction.

Check for kinked or jammed LPG hoses (between VSI injector and couplings).

Check for blocked inlet couplings.

Check the main fuse of the VSI system

Check ignition+ (VSI wire 13)

Caused by different switch off times between ignition+ and injector power.

Connect VSI wire 13 to the petrol injector feed instead of ignition+. div. div. div. div. div. div. div.

The orange LED on the switch flashes Activate the LPG computer with the diagnostic program, using the F11 function key.

LPG tank empty? The LPG system switches to LPG but engine stalls immediately

Not running on all cylinders on lpg Check parameter 10, number of cylinders.

Check the connections of the injection module.

Check the injection module.

No injection times on lpg

Injection time “falls” to 0 mSec on

LPG

Check engine while running on LPG, injector circuit malfunction, no lambda control (limb home)

Not starting / running on petrol

Replace injection module

Check the connections of the injection module.

Maintenance instructions

When you drive on LPG/CNG, maintaining your car is even more important than when using petrol. Since the specifications of LPG/CNG differ from those of petrol, minor engine problems which won't disturb the driving comfort while using petrol, may cause major problems while using CNG. Follow the maintenance instructions in order to use LPG/CNG without any problem.



General maintenance to the car regarding spark plugs, spark plug cables, ignition circuit, valves, etc., has to be carried out according to the instructions of the car manufacturer.



Proof of maintenance according to the guidelines of the importer is obligatory (completely filled in maintenance booklet).



Maintenance has to be carried out by a dealer authorised by the importer.



Adjustments and repairs on your Prins VSI- system should only be carried out by a dealer authorised by

Prins Autogassystemen B.V.

MAINTENANCE AND SERVICE

Registration of maintenance and service of the VSI-LPG system.

25.000 km or after 2 years

100.000 km or after 2 years

175.000 km or after 2 years

250.000 km or after 2 years

Checklist executed services:

Lock off valve filter replacement*

Filter unit filter replacement*

Hoses + filling hoses checked

Fastening of components checked

Electrical connection + wiring checked

Checked for fuel leakage

Checked for trouble codes (petrol and

LPG) + system pressure

Checked for exhaust emissions

Tightening torque of the allen screws of the reducer checked at 8Nm



Number of kilometres:

Date:



Number of kilometres:

Date:



Number of kilometres:

Date:



Number of kilometres:

Date:

*The service intervals of the filter replacements may be divergent because of the variable LPG quality. Ask your Prins dealer for more information.

Registration of maintenance and service of the VSI-CNG system.

25.000 km or after 2 years

100.000 km or after 2 years

175.000 km or after 2 years

250.000 km or after 2 years

Checklist executed services:

Keihin inlet filter replacement*

Filter unit filter replacement*

Hoses + pipes checked

Fastening of components checked

Electrical connection + wiring checked

Checked for fuel leakage

Checked for trouble codes (petrol and

CNG) + system pressure

Checked for exhaust emissions



Number of kilometres:

Date:

Number of kilometres:

Date:

Number of kilometres:

Date:

Number of kilometres:

Date:

*The service intervals of the filter replacements may be divergent because of the variable CNG quality. Ask your Prins dealer for more information.

Checklist after installation

Connect the serial interface cable and run the VSI diagnosis program.

Install the VSI main fuse, and program the fuel switch.

Turn the ignition key in the accessory position.

When working on the car, beware of moving and rotating parts in the engine compartment.

When commissioning the LPG/CNG system, you must activate the VSI computer with the diagnosis software. When the VSI-I computer has not been activated, it will keep generating error code 160. To activate the VSI-I computer, select function F11 (activate ECM). After activation erase foultcode 160.

Check whether the program in the VSI computer matches with the car ( dedicated engine set ):

Refer with F2 to the box number and car description in the diagnosis software and compare these with the set number.

The system will switch over to LPG/CNG as soon as the temperature of the coolant (T-ect) becomes higher than the parameter T-min set and when the TSO-cold time is expired.

Check all components and connections for any gas leakage ( use a LPG/CNG leak detector device ) or foam leak spray. Caution for moving and rotating parts in the engine compartment !

Let the engine run warm on petrol >80°C.

Check if the evaporator/coolant water heats up.

Check the engine signals: petrol injection time, RPM, ECT, lambda

Let the engine run idle on LPG/CNG.

Adjust the LPG evaporator pressure. Refer to the parameter list ( or F2 : ID box) for the idle level value set.

Adjust the LPG evaporator pressure in such a way that the pressure measured ( P-sys ) equals the idle level value.

Turn the socket-head screw at the front of the evaporator to adjust the pressure.

An error code will be generated whenever the pressure variation is to high.

Seal the evaporator with the sticker included in the delivery after having adjusted the pressure.

Use the diagnosis software to check again all input and output signals.

Check the system for error codes and solve these, if required.

Check the petrol MMS for EOBD error codes.

Place the protection connector on the VSI communication connector.

Make a test drive and check the driveability on LPG/CNG and petrol.

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Oglas

Required equipment / tools / materials for installing a complete system

Vehicle check

General instructions

Introduction

Approval numbers VSI LPG / CNG components

The Prins LPG reducer

NO

The Keihin CNG regulator

The injector rail

The Prins filter unit

The Keihin filter unit

The VSI computer

VSI-I

VSI-2.0 computer

Instructions rotating the Prins VSI injector rail

The wiring loom.

VSI-I

VSI-2.0

Hose connections

VSI inlet manifold coupling

VSI inlet manifold coupling with nylon hose

The VSI-I fuel switch

The VSI-2.0 fuel switch

Electrical connections on the LPG reservoir

Electrical connections VSI-I wiring harness

Electrical connections VSI-I wiring harness

Electrical connections VSI-2.0 wiring harness

Electrical connections VSI-2.0 wiring harness

Electrical connections VSI-2.0 wiring harness

Electrical connections VSI-2.0 wiring harness

Electrical connections RPM module 091/0236

Electrical connections Petrol Pressure Simulator 091/0252

Petrol Pressure Simulator

VSI

Electrical connections Dual Sensor Interface (DSI)

Dual Sensor Interface

080/70066

Hall level indicator

080/70065

Tank lock off valve

Electrical connections CNG Prins Timing Optimizer (PTO)

Prins Turbo / MAP sensor

-

-

-

-

-

-

injection module

Trouble code chart LPG

Maintenance instructions

Checklist after installation

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