RACELOGIC
TRACTION CONTROL
Racelogic Ltd, 5 Little Balmer
Buckingham Industrial Park
Buckingham, MK18 1TF
Tel : +44 (0)1280 823803 Fax : + 44 (0)1280 823595
Email : traction@racelogic.co.uk
RACELOGIC
Traction Control Manual V3.0
CONTENTS
1.
FITTING INSTRUCTIONS ...................................................................................4
1.1
INTRODUCTION ...............................................................................................4
1.2
INVENTORY OF THE TRACTION CONTROL KIT ....................................................4
1.3
RECOMMENDED FITTING TOOLS .....................................................................5
1.4
INJECTOR CUT ...............................................................................................7
1.4.1
General.................................................................................................7
1.4.2
Locating Signal Wires...........................................................................7
1.4.3
Connecting The Injector Cut.................................................................8
1.4.4
Connectors ...........................................................................................9
1.4.5
Grouped Injection ...............................................................................10
1.5
ABS CONNECTION .......................................................................................11
1.5.1
General...............................................................................................11
1.5.2
Locating Sensor Wires .......................................................................12
1.5.3
Connecting Traction Control ABS Wires ............................................13
1.6
MISCELLANEOUS CONNECTIONS ...................................................................14
1.6.1
Ignition Switched Supply ....................................................................14
1.6.2
Ground (GND) ....................................................................................14
1.6.3
RPM....................................................................................................15
1.7
FITTING THE TRACTION CONTROL SWITCH .....................................................16
1.8
CALIBRATION AND TEST PROCEDURE............................................................17
1.8.1
General...............................................................................................17
1.8.2
Traction Control Checklist ..................................................................17
1.8.3
Wheel Speed Calibration....................................................................18
1.8.4
Calibration Procedure.........................................................................18
1.8.5
Final Test............................................................................................19
1.8.6
Common Problems and Solutions ......................................................19
1.9
TRACTION CONTROL SWITCH/ADJUSTER.......................................................21
1.9.1
Traction control settings .....................................................................21
1.9.2
Diagnostic Modes ...............................................................................22
1.10 LAUNCH CONTROL .......................................................................................23
1.10.1
General..............................................................................................23
1.10.2
Adjuster Program................................................................................23
1.10.3
Laptop Program..................................................................................24
1.10.4
Launch Procedure ..............................................................................24
1.11 CARS WITH ONLY 3 WHEEL SPEED SENSORS .................................................25
1.11.1
Procedure for configuring cars with 3 wheel speed sensors ..............25
1.12 8 CYLINDER TRACTION CONTROL .................................................................27
1.13 CONNECTOR WIRING ....................................................................................28
*- Only on TC8 ...................................................................................................28
2.
SOFTWARE.......................................................................................................29
2.1
INSTALLATION ..............................................................................................29
2.2
CONNECTING THE TRACTION CONTROL TO THE COMPUTER ............................29
2.3
TRANSFERRING SETTINGS FROM THE TRACTION CONTROL .............................29
2.4
TRANSFERRING SETTINGS TO THE TRACTION CONTROL ..................................29
2.5
MAIN WINDOW .............................................................................................31
2.5.1
File menu............................................................................................31
2.5.2
Options Menu .....................................................................................32
2.5.3
View menu..........................................................................................34
2.5.4
Help menu ..........................................................................................34
2.6
GRAPH WINDOW ..........................................................................................36
2.6.1
File menu............................................................................................36
Page 2
RACELOGIC
Traction Control Manual V3.0
2.6.2
Options menu .....................................................................................37
2.6.3
Colours menu .....................................................................................37
2.6.4
View....................................................................................................38
2.7
GRAPH FUNCTIONS ......................................................................................38
2.7.1
Zoom ..................................................................................................38
2.7.2
Pan .....................................................................................................39
2.7.3
Cursor.................................................................................................39
2.7.4
Show / Hide data ................................................................................40
3.
TRACTION CONTROL SETTINGS ...................................................................40
3.1
3.2
3.4
3.5
3.6
3.7
3.8
CONFIGURATION ..........................................................................................40
LAUNCH CONTROL .......................................................................................45
WHEELS ......................................................................................................48
REV LIMITS...................................................................................................51
DATA LOGGING (ONLY FOR UNITS WITH BATTERY BACKUP MEMORY) ..............52
REAL TIME ...................................................................................................53
TEST ...........................................................................................................54
4.
FINE TUNING ....................................................................................................55
5.
SELF-FIT SENSORS .........................................................................................57
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
6.
CLUTCH SWITCH .............................................................................................64
6.1
6.2
6.3
7.
FITTING A SWITCH ........................................................................................64
SETTING THE CLUTCH SWITCH REV LIMITS ..................................................65
TESTING THE CLUTCH SWITCH......................................................................65
MSD INTERFACE..............................................................................................66
7.1
7.2
8.
SENSOR.......................................................................................................57
PICKUP METHODS ........................................................................................57
SENSOR FITTING ..........................................................................................58
SENSOR GAPPING ........................................................................................59
SENSOR CHECKLIST .....................................................................................59
RUNNING WHEEL SPEED WIRES ...................................................................59
CONNECTING SENSORS................................................................................60
PROGRAMMING THE PPR (PULSES PER REVOLUTION) ...................................60
TESTING ......................................................................................................61
COMMON SENSOR PROBLEMS AND SOLUTIONS .............................................63
CONNECTING THE MSD CUT ........................................................................66
RPM ...........................................................................................................66
SPARK CUT ......................................................................................................67
8.1
8.2
8.3
GENERAL .....................................................................................................67
CONNECTING THE SPARK CUT .......................................................................67
RPM ...........................................................................................................67
Page 3
RACELOGIC
1.
Traction Control Manual V3.0
FITTING INSTRUCTIONS
Thank you for buying Racelogic Traction Control. By following the instructions in
this manual, our system can be fitted to any car in a matter of hours. If you have any
problems or queries while fitting the system, please call Racelogic on + 44 (0) 1280
823803 or Email traction@racelogic.co.uk.
1.1
Introduction
The Racelogic Traction Control System works by monitoring the vehicle’s wheel
speeds, constantly comparing the driven and undriven wheels, looking for differences
between the two. When the system detects an excessive difference in wheel speeds
above a programmable threshold a fuel cut is initiated to reduce the power of the
engine, therefore reducing wheel spin.
Connecting the system involves interfacing with the vehicles existing ABS sensors to
provide the wheel speed inputs and breaking each of the signal wires supplying the
fuel injectors. This allows the Traction Control to cut fuel when wheel spin has been
detected.
A Schematic of the complete Traction Control System can be seen in Diagram 1 on
Page 6.
1.2
•
•
•
•
•
•
•
•
•
•
•
•
Inventory of the traction control kit
Manual
Software disc
TC Box
TC Loom
Diagnostic Loom
Diagnostic Plug
TC Switch
Heatshrink
2 x 8 Way Multilok Connector Male
2 x 8 Way Multilok Connector Female
18 x Male Contacts
18 x Female Contacts
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RACELOGIC
Traction Control Manual V3.0
Standard TC box.
1.3
•
•
•
•
•
•
•
•
•
•
Recommended Fitting Tools
Screw Driver - Cross Head
Screw Driver - Flat Blade
Wire Cutters
General Purpose Crimp Tool
Wire Strippers
Soldering Iron
Solder
Electrical Tape / Heatshrink Tubing (4/2 mm Shrink Ratio)
Assorted Tyraps
Multi-Meter
The tools listed above are the basic requirement for fitting Traction Control, additional
tools may be required for specific vehicles.
Racelogic have fitted many cars with traction control and have an inventory of fitting
instructions for specific cars. Please call or email us to see if we have your car listed.
Page 5
RACELOGIC
Traction Control Manual V3.0
FR
FL
RL
RR
WHEELSPEED or ABS
RACELOGIC
TRACTION
CONTROL
SYSTEM
On/Off LED & Adjuster
Wet
5%
Launch
10%
15%
20%
Off
Nb : The LED will illuminate
when the Traction Control
system is switched off.
Nb : The Launch Button is used to
initiate launch control and should be
momentary in operation.
Injector
ENGINE
MANAGEMENT
SYSTEM
Diagnostic LED & Plug
The diagnostic light indicates
wheelspeeds and engine revs are being
picked up correctly. Switch between
wheelspeeds and revs using the adjuster
Diagram 1 Traction Control Schematic
Page 6
RACELOGIC
1.4
Traction Control Manual V3.0
Injector Cut
1.4.1 General
Injector cut works by taking the signal supplied to each fuel injector and feeding it into
the Traction Control System. Under normal running the signal is exactly reproduced
firing the fuel injectors as normal. When wheel spin is detected the traction control
shuts down each fuel injector independently reducing the power of the engine
progressively. The severity of the cut is dependent upon the amount of wheel spin
detected and the parameters held within the Traction Control Unit.
By inspecting the fuel injectors of your vehicle you will see that two wires are
connected to each one. One of the wires supplies +12 V where as the other supplies
a 12V signal going down to GND to fire the injector. (see Diagram 2). It is these
“signal” wires that have to be located and connected to the Traction Control.
12v
12v
Signal In
Permanent 12v
Diagram 2 - Signals To Fuel Injectors
1.4.2 Locating Signal Wires
The signal and 12V wires have to be connected to the correct pin of the fuel injector
so you have to find the “polarity” of the fuel injection system before fitment. The
polarity can be identified using a number of methods.
•
Wiring Diagrams - If you have a wiring diagram of the vehicle trace each of the
signal wires from the engine control unit (ECU) to each of the fuel injectors, the
wiring diagram will normally indicate colour codes. The 12V feed wires will be
linked together and will generally have a common colour code. If you have books
such as the “Autodata - Fuel Injection” series these can help in identifying the
polarity of a vehicles fuel injection system.
•
Colour Coding - If you have no wiring diagrams you can identify the polarity by
looking at the wiring to the fuel injectors. If each of the fuel injectors is fed by a
common wire of one colour this will be the 12V feed, the remaining wires should
all be different colours and will be the signal wires.
•
Continuity Testing – On the majority of cars the 12V side of the fuel injectors are
linked together. Place the multi-meter on one injector and check with the next
injector, if one side continuity beeps back check the rest of the injectors.
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RACELOGIC
Traction Control Manual V3.0
Having located the signal wires, enter the colour codings for the fuel injection system
in the table below.
Fuel Injector Signal and 12V Inputs
Fuel Injector
ECU Pin Number
Number
1
Signal Input
(Colour)
12Volts (Colour)
2
3
4
5
6
1.4.3 Connecting The Injector Cut
Once the polarity of the fuel injection system has been found the signal wires feeding
each fuel injector must be cut and the injector cut loom connected, Diagram 3.
Diagram 3 - Injector Cut Fitting
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RACELOGIC
Traction Control Manual V3.0
1.4.4 Connectors
We highly recommend using the 8 way multilok connectors when interfacing the
traction control with the vehicle, by doing this the car can be easily returned to
standard.
Connect each wire from the Traction Control Loom to each of the injector signal wires
as shown below
Cut the signal wire and strip each end exposing the cores.
Crimp a male contact to the ECU side and a female contact to the Injector
side.
Insert into the appropriate 8 way multilok connector making sure that when
the connectors are placed together, the connection is remade.
Repeat the above process for each of the signal wires.
The injector cut inputs and outputs wires have the following colours.
Traction Control Inputs and Outputs (4 Cylinder)
Input Pin No
Signal Input (Colour)
Output Pin No
8
Red
11
9
Orange
12
22
Grey
25
23
Green
24
Additional Inputs/Outputs (6 Cylinder)
10
Yellow
13
21
Pink
26
Signal Output (Colour)
Red/Black
Orange/Black
Grey/Black
Green/Black
Yellow/Black
Pink/Black
For example channel 1 of the traction control should be connected as in Diagram 4.
EMS
Red
Traction
Control
Red/Black
Diagram 4 – Example Connection
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RACELOGIC
Traction Control Manual V3.0
1.4.5 Grouped Injection
Grouped injection is when all the injectors are fired at once.
12V
1
2
3
1
4
2
3
4
ECU
ECU
Diagram 5
Diagram 6
Diagram 5 shows fuel injectors that fire sequentially. This means that the ECU fires
each injector individually. The traction control can be interfaced at the ECU.
Diagram 6 shows that all four of the fuel injectors are fired off one signal from the
ECU. This is more common in older cars. The traction control needs to be able to
control individual injectors, so it will need to be interfaced where the signal splits to
each injector. The signal is sometimes split just outside the ECU or at the injector
under the bonnet, in which case extra wiring may be needed.
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RACELOGIC
1.5
Traction Control Manual V3.0
ABS Connection
1.5.1 General
The easiest method of linking into the ABS sensors is to locate the controller. This
may look like an engine ECU or be combined with the ABS pump.
ABS Pump and Controller
ABS Unit
Most ABS sensors are passive inductive sensors that give a signal when metal
passes near them. Resistance of sensors varies from 800 - 1200 ohms. Sensors
usually have two wires each, which account for eight wires feeding the ABS unit.
These wires have to be located and four wires from the traction control have to be
connected to one side of each sensor. Deciding which wire to connect to is
dependent upon the type of sensor used, Diagram 7.
Sensor A Sensor B
gn
gn br
11 12
11 12
Diagram 7 - ABS Sensors
In the first example sensor A, one of the wires is connected to the shielding of the
cable (pin 12), the traction control wire must be connected to the wire connected into
pin 11. In the second example sensor B, both wires carry signals to the ABS,
therefore the traction control can be connected to either wire.
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RACELOGIC
Traction Control Manual V3.0
1.5.2 Locating Sensor Wires
The wires can be found using a number of methods.
•
Twisted Pairs and 2 core wire – The sensor wires will be fed back to the controller
and are normally then identified as a twisted pair or 2 core cable.
•
Wiring Diagrams - If you have a wiring diagram of the vehicle, trace each of the
sensor wires to the ABS unit, the wiring diagram will normally indicate colour
codes. If you have books such as the “Autodata - Anti Lock Braking Systems”
series these can help in identifying the wiring. (Contact Racelogic if you do not
have one).
• Multimeter Resistance Setting – Switch a meter to “Resistance” and test each of
the wires leading to the ABS unit, Diagram 8. Ensure the connector is plugged in
when you are doing this. Wheel speed sensors will generally have a resistance of
between 800 – 1.2 K ohms.
Ω
Diagram 8 Testing for wheel speed sensors
Having completed the test, write down the wiring colours corresponding to each
wheel speed in the table below.
ABS Wheel Speed Inputs
ABS Wire (Pin No)
ABS Wire (Colour)
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RACELOGIC
Traction Control Manual V3.0
1.5.3 Connecting Traction Control ABS Wires
The 4 traction control ABS wires are coloured Red, Blue, Yellow and Green and form
the 4 core shielded cable.
Connect each wire from the traction control loom to each of the 4 ABS sensor wires
as follows.
•
•
•
•
•
•
Strip back the shielding of the ABS wire exposing the cores.
Tin the cores using the soldering iron and solder.
Strip back the shielding of the traction control wire.
Tin the cores using the soldering iron and solder.
Solder the traction control Wire to the ABS wire.
Cover the joint with insulation tape.
The ABS connections can be tested using either a laptop computer or the diagnostic
facility on the traction control.
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RACELOGIC
1.6
Traction Control Manual V3.0
Miscellaneous Connections
1.6.1 Ignition Switched Supply
The red wire (Pin 2) with inline fuse should be connected to a suitable ignition
switched 12V source. A suitable 12V source can be found using any of the following
techniques.
•
Wiring Diagrams - If you have a wiring diagram of the vehicle, find an ignition
switched 12 V feed.
•
Multimeter – Select “voltage test” on the meter and probe wires that could supply
an ignition feed 12V. Once a suitable feed has been found, crank the car and
ensure it doesn’t go to GND during cranking.
•
Injectors – Trace the 12V side of the fuel Injectors back to either the relay box or
the ECU.
Once a suitable feed has been found, follow the procedure below for connecting the
12V supply to the 12V input of the traction control.
•
•
•
•
•
•
Strip back the insulation of the 12V wire exposing the cores.
Tin the cores using the soldering iron and solder.
Strip back the insulation of the traction control wire.
Tin the cores using the soldering iron and solder.
Solder the traction control Wire to the 12V wire.
Cover the joint with insulation tape.
1.6.2 Ground (GND)
The double black wire with a ring terminal (Pin 1,14) should be connected to a solid
GND, if at all possible it should be bolted to the chassis. If you cannot bolt it to
the chassis, make sure it is connected to a wire that is thicker than the combination
of the two twisted wires. A suitable GND can be found using any of the following
techniques.
•
Wiring Diagrams - If you have a wiring diagram of the vehicle find a main GND
wire.
•
Multimeter – Select “Continuity Test” on the meter and hold one probe on a
known Ground e.g. Battery GND, hold the other probe on the test wire. If the
meter gives an audible tone the test wire is a suitable point to GND the wire.
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RACELOGIC
Traction Control Manual V3.0
1.6.3 RPM
The Black/White wire (Pin 18) should be connected to a suitable RPM signal. A
suitable signal would be either 0 –12 Volts or 0 – 5 Volts .
A suitable RPM signal can be found using any of the following techniques.
•
Wiring diagrams - If you have a wiring diagram of the vehicle find an RPM signal.
•
Tachometer – There is usually an RPM signal leading to the back of the
dashboard. (Highly Recommended)
•
Coil signal – note, if the car has twin coils the cylinder value in the traction control
menu may need to be changed. e.g. 6 Cylinder engine, twin coils, set cylinders to
3 if RPM is picked up off one coil.
•
Diagnostic Connector – Some cars have a diagnostic connector, these will
normally have a RPM signal. e.g. pin1 on BMW Diagnostic Socket.
•
ECU – most cars will have an RPM signal going into the ECU.
Once a suitable RPM signal has been found, follow the procedure below for
connecting the RPM wire to the RPM input of the traction control.
•
•
•
•
•
•
Strip back the insulation of the RPM wire exposing the cores.
Tin the cores using the soldering iron and solder.
Strip back the insulation of the traction control wire.
Tin the cores using the soldering iron and solder.
Solder the traction control Wire to the RPM wire.
Cover the joint with insulation tape.
The RPM connection can be tested using either a laptop computer or the diagnostic
facility on the traction control. This is explained in Section 7.2 Diagnostic Modes.
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RACELOGIC
1.7
Traction Control Manual V3.0
Fitting the traction control switch
The traction control switch will need to be mounted on the car where the driver can
adjust it while driving. The launch button can be fitted away from the switch by
extending the two grey wires. When installed, the switch will need to be connected to
the switch wire on the traction control loom. Connect the switch to the loom colour for
colour, making sure the connections are covered with the heatshrink provided.
The adjuster connects to a three core cable from the main traction loom. This cable
consists of a red, a green and a blue wire.
Manual Slip Adjuster installed in a Holden HSV
Launch Button and Manual Slip Adjuster installed in a Nissan 300ZX
Page 16
RACELOGIC
1.8
Traction Control Manual V3.0
Calibration and Test Procedure
1.8.1 General
Once the Traction Control loom has been connected, the system is ready for
calibration and testing. The system will need calibrating before it will work properly
and is initiated by plugging the calibration adapter into the diagnostic lead.
The traction control system is also fitted with self-diagnostics. This enables engine
RPM and 4 wheel speeds to be indicated via an LED on the diagnostic lead.
Diagnostic mode is accessed at any time by selecting the desired wheel speed
channel or RPM using the rotary adjuster.
Please check the items on the checklist below are correct before calibrating the
system. The checks are in normal type and the tests are in italics.
1.8.2 Traction Control Checklist
Yes
1. Has the 12 Volts supply been connected to the Red
Wire (Pin 2) of the Traction Control.
2. Has the black GND wire (Pin 1) been connected to a
suitable GND.
Complete checks 1 and 2 and Turn the ignition switch on.
Check if the diagnostic light illuminates for 2 seconds, the
switch will light up if in the off position.
3. Have all the injector wires been cut and spliced into
the traction control wiring loom. Inputs to the
ECU side and outputs to the fuel injector side.
Start the car and ensure it runs without misfiring.
4. Has the black/white RPM wire (Pin 18) been connected
to a suitable 0 – 5 or 0-12 Volt signal.
Switch the adjuster to the off position. Start the car and
Rev, ensuring the diagnostic light flashes in time.
5. Have all the ABS wires been connected to each
Traction Control wheel speed input.
Select 15%, 10%, 5% and Wet on the adjuster which
will indicate wheel speeds 1 through to 4 on the LED.
The light must have started flashing above 20 kmh.
If all the answers to the checklist above are yes please proceed to the next section.
If there are any queries please call Racelogic’s technical helpline on
+ 44 (0) 1280 823803 or email traction@racelogic.co.uk.
Page 17
RACELOGIC
Traction Control Manual V3.0
1.8.3 Wheel Speed Calibration
Before the Traction Control system will work the wheel speeds have to be configured
to tell the system which are driven and which are reference wheels. To configure the
wheel speeds follow the procedure below.
Start the car.
Take the car to a section of road with a short straight followed by a
slow 180 degree corner, left or right, Diagram 9.
* De-Clutch
Diagram 9 – Corner Suitable For Calibration.
1.8.4 Calibration Procedure
1.
Drive the car to a suitable test road, preferably where almost full lock can be used.
2.
Switch the engine off and wait for the system to power down (If in doubt turn the adjuster to the off position
and wait for the light to go off).
3.
Plug the calibration adapter into the diagnostic lead.
4.
Turn the ignition switch to the on position.
5.
After 2-10 seconds the LED will start flashing (Once every second) to indicate the system is in calibration
mode.
6.
Start the car.
7.
Drive the car towards the corner, and turn the corner
8.
Once the system is calibrated the light will stop flashing once a second and will flash in time with RPM or
any of the four wheel speeds, depending upon the switch position.
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RACELOGIC
Traction Control Manual V3.0
1.8.5 Final Test
Jack the driven wheels of the car and start the engine. Engage a gear and spin the
wheels. When the wheels are spun above 14 km/h does the engine misfire?
Yes - The system is working correctly and the fitting procedure is finished.
No – Check that the RPM source has been connected and is being supplied by
a valid signal by repeating section 5.3.
1.8.6 Common Problems and Solutions
Q - The car will not start
AAA-
A-
Check the fuse – 5A
Check the 12V supply to the system. Is it ignition switched? and
ensure the signal does not go to GND during cranking.
Check the GND to the system, the grounding point should be a
chassis ground preferably with other wires grounded through the
same point. If in doubt, check continuity to a known GND such as
battery GND.
Check the inputs and outputs of the traction control are wired into the
fuel injectors correctly; i.e. The wires with no trace are connected to
the ECU and the wires with traces are connected to the fuel injectors.
Q – The car starts but misfires
A-
Switch the adjuster to the off position and see if the misfire persists.
If the misfire stops :
Try to distinguish if the car is misfiring or if it is hitting a rev-limit, if it is
hitting a rev-limit Launch control may be active.
If the misfire is more random the problem may be caused by rogue
signals on the wheel speeds eg Electrical noise. Ensure all wheel
speed wires are run away from all the vehicles HT circuit.
If the misfire persists: Check the inputs and outputs of the traction
control are wired into the fuel injectors correctly.
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RACELOGIC
Traction Control Manual V3.0
Q – The car runs cleanly when stationary but misfires when driving.
A–
Does the car only misfire at low speed ?
Yes - Use the diagnostic light or laptop to ensure all the wheel speeds
are being indicated and are picking up at roughly the same speed.
If all of the wheel speeds are not being picked up until higher speeds,
connect each of the wheel speed pickup wires to the other side of the
ABS sensor wires.
If for example two wheel speeds come in early and two come in late
use the table below to find out which wire colours correspond to which
adjuster position and swap those wires.
Q – The car misfires throughout the whole rev-range.
A-
Use the diagnostic light to ensure the traction control is picking up all
four wheel speeds and engine revs. If any of the wheel speeds are
missing, the adjuster position relates to each of the following wire
colours.
Adjuster Position
Wet
5%
10%
15%
20%
Off
Description
Wheel speed 1
Wheel speed 2
Wheel speed 3
Wheel speed 4
RPM
RPM
Traction control Wire Colour
Red
Blue
Yellow
Green
White/Black
White/Black
If the misfire persists:
A-
Reconnect the car to standard with the two 8 way multilok connectors
and see if the misfire clears.
Q – The system is not picking up any wheel speeds.
A–
Check the wires are connected to the ABS sensors.
A-
Connect each of the wheel speed pickup wires to the other side of the
ABS sensor wires.
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RACELOGIC
1.9
Traction Control Manual V3.0
Traction Control Switch/Adjuster
The interface with the traction control system is via the rotary switch that allows the
system to be switched on/off and the amount of wheel spin to be adjusted.
Turn the knob fully anti-clockwise and the LED will illuminate indicating the system is
switched OFF. One click clockwise and the system will allow 20% wheel spin before
the first level cut is initiated. Each subsequent position will remove 5% increments
from this value, until the most safe “Wet” mode is entered, shown in Diagram 10.
Wet
5%
LED (Illuminated When System Off)
10
15%
20%
Off
Diagram 10 – Traction control switch/adjuster
1.9.1 Traction control settings
Wet
5%
10%
15%
20%
OFF
-
For severe slippery conditions e.g ice, torrential rain
Damp conditions
Dry conditions
Sport
Sport
Traction control Turned Off, the car will function as standard.
The setting on the adjuster is down to the driving style of the driver and the grip
available from the car. We suggest that when the system is first installed the driver
experiments with the settings to find what setting suits best.
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RACELOGIC
Traction Control Manual V3.0
1.9.2 Diagnostic Modes
The Diagnostic modes can only be used once the adjuster has been connected. The
diagnostic functions will not operate if the ‘enable data logging’ function is enabled.
The adjuster can also be used to switch between diagnostic modes. The LED
connected to the diagnostic wire acts as a diagnostic tool which can display each of
the 4 wheel speeds and the engine RPM.
Adjuster Position
Wet
5%
10%
15%
20%
Off
Description
Wheel speed 1
Wheel speed 2
Wheel speed 3
Wheel speed 4
RPM
RPM
Traction control wire colour
Red
Blue
Yellow
Green
White/Black
White/Black
When any of the wheel speed modes are selected, the light will be constant when the
car is stationary. When the car is driven, the faster the car goes the higher the
frequency the led will flash.
For example, if the adjuster is set to 10% and the diagnostic light does not flash,
swap the yellow wire to the other side of the ABS sensor, to see if this cures the
problem.
To test if the RPM wire is connected to a valid RPM source the adjuster will need to
be switched to Off or to 20%. By revving the car the frequency of the led should
increase.
W/S 2
W/S 1
LED ON - RPM
W/S 3
W/S 4
RPM
RPM
Diagram 11 – Adjuster positions for traction control diagnostics
NOTE – On the TC8 with Data logging, the logging must be turned OFF for the
Diagnostic mode to work. It can be turned ON once the system has been setup.
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1.10
Traction Control Manual V3.0
Launch Control
1.10.1 General
Launch Control is a method of controlling the revs at the start. It is activated by the
launch control button. This allows full throttle to be used, and the revs are controlled
by the traction control. This means you only have to balance one foot instead of two.
The system uses a secondary rev limit that removes itself automatically when the
rear wheels are within a set percentage slip of the front wheels.
The Launch Control rev-limits can be programmed using two methods depending
upon whether you have access to a laptop computer.
The Launch Control has two different rev-limits that can be set, WET and DRY. The
wet rev-limit only works when the switch is positioned in the WET position. All other
settings on the switch use the DRY launch.
1.10.2 Adjuster Program
The Launch control rev-limits can be programmed using the launch button supplied
as part of the Traction Control Switch. Follow the procedure below to program in Wet
or Dry rev-limits.
•
Turn the vehicles ignition OFF.
•
Turn the adjuster to wet or dry settings depending upon which rev-limit you wish
to program.
•
Turn the vehicles ignition ON and start the vehicle.
•
Press the launch button once.
•
Press the launch button again and hold down the launch button.
•
Rev the engine to the desired Launch rev-limit.
•
Release the launch button.
•
The rev-limit will be set.
NOTE - When using the launch button to calibrate, the soft cut is set when the button
is released, and the hard cut 250 RPM higher.
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e.g. – To set the wet rev-limit to 4000 RPM.
Start the car.
Switch to wet settings.
Press the launch button twice and hold down on the second press.
Rev to 3750 RPM.
Release the button.
The soft cut is now set to 3750 RPM and hard cut to 4000RPM.
1.10.3 Laptop Program
Run the software and enter the Launch Control tab.
desired.
Program the rev-limits as
1.10.4 Launch Procedure
Button Initiation – Stop the vehicle and press the launch button once leaving the
adjuster selecting the desired percentage slip.
The car will then rev-limit between the programmed soft and hard cut limits. The revlimit and launch control strategy depends upon whether wet or dry settings have
been selected with the adjuster.
After 2-3 seconds the car should be settled on the Launch Control Rev Limit. If it is a
turbo car the boost pressure should be gradually building up.
A common mistake is to bang the clutch in and instantly spin the wheels. The first 10
metres is the most critical phase, even a small amount of wheel spin at these low
speeds is very high in percentage terms. The clutch should be slipped whilst not
breaking traction, but not too much as to impede forward progress.
If you can't slip the clutch, then change it for one you can, you are losing out, here is
why :The clutch can be used as torque converter. The torque curve on a race engine is
going to be biased towards higher rpm, at low rpm there will not be a surplus of
torque over wheel spin. Therefore the engine needs to rev before it can accelerate
the vehicle at a decent rate. The clutch translates this high rpm into high torque.
On a low powered engine that cannot spin the wheels in first gear, the slipping clutch
translates the stored momentum of the engine into torque to artificially boost the
acceleration in the first few metres.
On a high-powered vehicle, the slipping clutch prevents the wheels from initially
breaking traction, the most important factor in a good start.
If the car “bogs down” or has too much wheel spin adjust the rev-limits to program
the perfect start.
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1.11
Traction Control Manual V3.0
Cars with only 3 wheel speed sensors
Some cars have a single sensor for the rear wheel speed that is mounted on
the differential e.g. Nissan 200SX and some older Mercedes Benz. This
means that the TC system cannot calibrate itself automatically. This can only
be done via a laptop using the software.
1.11.1 Procedure for configuring cars with 3 wheel speed sensors
1) Locate the three sensor wires, (See 1.5.3 Connecting Traction Control ABS Wires).
2) Identify which signal wire is from the rear sensor.
This can be done using any of the following methods
•
Wiring Diagrams - If you have a wiring diagram of the vehicle, trace each of the
sensor wires to the ABS unit, the wiring diagram will normally indicate colour
codes. If you have books such as the “Autodata - Anti Lock Braking Systems”
series these can help in identifying the wiring. (Contact Racelogic if you do not
have one).
•
Multimeter – Select “Continuity Test” on the meter. Locate the rear sensor and
place one probe on the signal wire at this point. Probe each of the three known
sensor wires at the ABS controller until the meter gives an audible tone signifying
the rear sensor signal wire.
•
Supplied Software – Connect any 3 of the traction control wheel speed wires to
the three known ABS signal wires on the car (Leaving one wire from the traction
control disconnected). Run the software and open the graph window to enable
you to monitor their function. Generally the front and rear sensors will be using a
different number of reference points. Since the ‘pulses per revolution’ in the
traction control unit for front and rear are set the same, the channel connected to
the rear sensor when driving in a straight line will record a different speed. Using
the information below you can identify which channel is associated with which
traction control wheel speed wire and therefore which signal wire is from the rear
sensor.
Traction control wheel speed channel 1 = Red
Traction control wheel speed channel 2 = Blue
Traction control wheel speed channel 3 = Yellow
Traction control wheel speed channel 4 = Green
If the rear sensor does not use a different number of reference points, you can
still locate which traction control channel is connected to it by turning a tight
corner. In this situation the rear wheel speed will be the last to change state.
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3) Connections
Connect the front wheel speed sensors to the traction control unit. Now connect
the remaining two wires from the traction control unit to the rear wheel speed
sensor wire.
Ensure you change the settings in the ‘Wheels’ tab to reflect the speed sensor
connections.
4) Programming The PPR
Loading the traction control software and selecting the ‘Wheels’ tab will display
the following information. See section 2.1 re software installation.
If the front and rear sensors are using a different number of reference points you
will need to adjust the ‘Pulses per revolution’ (as shown above) to compensate. If
it is not possible to count the pulses, adjust the values until the traction control is
recording the same speed for both reference and driven wheels when the car is
traveling in a straight line.
NOTE – When adjusting the PPR the traction control will need to be powered
down for these changes to take place.
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1.12
Traction Control Manual V3.0
8 Cylinder Traction Control
The TC8 works in an identical way to all other system but has two extra
injector channels.
The injector cut inputs and outputs wires have the following colours.
Traction Control Inputs and Outputs (4 Cylinder)
Input Pin No Signal Input (Colour) Output Pin No
A–8
Red
A - 11
A–9
Orange
A - 12
A – 22
Grey
A - 25
A – 23
Green
A - 24
Additional Inputs/Outputs (6 Cylinder and 8 Cylinder)
A – 10
Yellow
A - 13
A – 21
Pink
A - 26
B–1
White/Red
B-8
B–2
Orange/Red
B-9
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Signal Output (Colour)
Red/Black
Orange/Black
Grey/Black
Green/Black
Yellow/Black
Pink/Black
Green/Red
Grey/Blue
RACELOGIC
1.13
Traction Control Manual V3.0
Connector Wiring
Connector A
No
Description
1
GND
2
VIGN
3
POT
4
WSPA1
5
WSPA2
6
WSPA3
7
WSPA4
8
I/P 1
9
I/P 2
10
I/P 3
11
O/P 1
12
O/P 2
13
O/P 3
14
GND
15
5V
16
GND
17
ON/OFF
18
RPM
19
GND
20
CSWITCH
21
I/P 6
22
I/P 5
23
I/P 4
24
O/P 4
25
O/P 5
26
O/P 6
Connector B
No
Description
1
I/P 7
2
I/P 8
3
GND
4
CONT1
5
DIAG TX
6
DIAG RX
7
GND
8
O/P 7
9
O/P 8
10
GND
11
CSWITCH
12
CONT3
13
CONT2
14
GSHIFT
15
12V
16
12V
Wire Colour
Black
Red
Green
Red
Blue
Yellow
Green
Red
Orange
Yellow
Red/Black
Orange/Black
Yellow/Black
Black
Red
Blue
N/C
White/Black
Yellow/Green
Pink
Grey
Green
Green/Black
Grey/Black
Pink/Black
Wire Colour
White/Red*
Orange/Red*
Blue
Red
Green
Green/Red*
Grey/Blue*
*
Blue
Red
*- Only on TC8
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2.
Software
2.1
Installation
Traction Control Manual V3.0
To install the traction control software, insert the CD into your CD-ROM drive. After a
few seconds the “Install shield” prompt should appear. If the CD does not auto-run
then browse the CD and double-click the 'SETUP' icon to start the install process.
The install wizard will then guide you through the installation process.
2.2
Connecting the traction control to the computer
Connect a serial data cable from your computers COM port to the diagnostic lead of
the traction control.
Start the software and from the options menu select the COM port which you have
connected to the traction control via the serial lead.
Apply power to the traction control.
2.3
Transferring settings from the traction control
The supplied software allows you to adjust the settings which are stored within the
traction control. To discover what values are set inside your traction control, select
‘Read data’ from the options menu. The software will now communicate with the
traction control. If all is successful, a green bar will temporarily appear at the bottom
of the screen. All the values read from the unit will now be displayed in the software.
If the software failed to communicate with the traction control, a red bar will
temporarily appear at the bottom of the screen. Please check that you have selected
the correct COM port from the options menu, the traction control is powered up and
the serial lead still connected from your computer to your traction control unit.
Note: It is a good idea to save the values read from your traction control using the
‘save as’ option in the file menu in case you need to reset these values.
2.4
Transferring settings to the traction control
Once you have changed the settings in the software, you must write these values
into your traction control.
Ensure that ‘real time play’ is not enabled.
Select ‘Write data’ from the options menu. The software will now communicate with
the traction control. If all is successful, a green bar will temporarily appear at the
bottom of the screen. All the values are now written into the traction control unit.
If the software failed to communicate with the unit, a red bar will temporarily appear
at the bottom of the screen. Please check that you have selected the correct COM
port from the options menu, the traction control is powered up and the serial lead is
connected from your computer to your traction control unit.
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Note: You can always select restore defaults from the options menu to return the
software to the Racelogic default settings. These can then be written to your traction
control to reset the system.
The screen shots below show the main and graph windows. To view the graph
window, click on the view menu, then graph. The graph window will now appear.
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2.5
Traction Control Manual V3.0
Main Window
The software has a main menu bar with shortcut buttons shown below the
menu. This menu is split into four sections as shown below.
2.5.1 File menu
‘Load’ allows you to load a file into the software containing previously saved
settings.
‘Save as’ allows you to save all the current settings to a file.
‘Exit’ This will close the software. If you have made changes to any values
and have not either saved the data to a file or sent the values to your traction
control unit you will get the following message :
This is to prevent accidental closure of the software. If you are sure you want
to close the software losing the modified data select ‘Yes’.
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2.5.2 Options Menu
Select COM port
Each time you move the cursor to the ‘Select COM port’ option, the software
detects which COM ports are available on your computer.
The above screenshot shows that ‘COM 1’ is greyed out which indicates that
this COM port is present on the computer, but is presently being used by
another program.
‘COM 2’ is available and is being used by this software.
‘COM 9’ is available and is not being used by any software.
When a computer is running windows 98, it is not possible to detect USB
COM ports. Due to this, a list of COM1 to COM9 is shown. Note: Used COM
ports will not be shown as used.
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Traction Control Manual V3.0
Read data
When ‘Read Data’ is selected, the software communicates with the traction
control connected via the serial port lead and reads out all the traction control
settings. These values are then displayed in the software.
Note: you cannot read from the unit whilst the ‘real time’ function is running.
Write Data
When ‘Write data’ is selected, all the settings shown in the software are
written into the unit connected via the serial lead.
Note: you cannot read from the unit whilst the ‘real time’ function is running.
Real Time Play / Stop
Selecting ‘Real Time play’ enables live data to be read from the traction
control. The ‘Real Time play’ button will be disabled and the ‘Real Time Stop’
button becomes available. Selecting ‘Real Time Stop’ will stop the unit
transmitting data.
An indication that data is being read from the traction control is the flashing
indicator in the top right corner of the screen.
The live data will be visible in the ‘Real Time’ tab and also the graph window.
You can also press the ‘F2’ key to start real time and ‘F3’ to stop real time
without entering the menu.
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Traction Control Manual V3.0
Restore Defaults
Selecting ‘Restore defaults’ sets all the available options in the software to
Racelogic default values.
2.5.3 View menu
Selecting ‘Graph’ will open up the graph window.
Selecting ‘Terminal’ will open up a window allowing direct communication with
the traction control.
2.5.4 Help menu
Manual
Selecting ‘Manual’ or pressing the ‘F1’ key on the keyboard will open a
window showing this manual.
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Traction Control Manual V3.0
About
Selecting ‘About’ will open a window showing version number of this software.
You can send an email to Racelogic by clicking on the blue email link.
There is also a link to the Racelogic website.
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2.6
Traction Control Manual V3.0
Graph Window
To view the graph window select ‘View’ then ‘Graph’ in the main window. To
return to the main window select ‘View’ then ‘view main window’.
The graph window has a menu bar with shortcut buttons shown below the
menu. This menu is split into four sections.
2.6.1 File menu
Save Graph data
This allows you to save the data currently shown on the graph.
Load Graph Data
This allows you to load in data previously saved and show it on the graph.
Print Graph
This allows you to print a copy of the graph.
Export
This allows you to export the graph data in the form of a picture ( i.e. Jpg,
Bitmap, Gif) or as data to allow you to load it into some other software i.e.
Microsoft Excel.
Instead of saving to a disk, you can send the data via email by selecting
‘Send’.
Exit
This will close the graph window and return you to the main window.
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2.6.2 Options menu
Real Time Play / Stop
As main window
Erase Graph
This will remove all the data from the graph.
2.6.3 Colours menu
To change the colours used in the graph for each channel i.e. Front Left (FL).
You can select the required colour from this menu. When you click on one of
the items i.e. Rear Left, you will get the following window.
The colour that is currently set will be the default colour shown.
Restore
This allows you to reset the colours to the original colours set in the software.
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2.6.4 View
View Main Window
Selecting this will bring the main window in front of the graph window.
View full graph
This shows all the data in the graph window.
2.7
Graph Functions
2.7.1 Zoom
You can zoom into the graph to show an area in more detail.
To zoom, first place the mouse pointer at position ‘A’ then holding down the
left mouse button drag the mouse down to point ‘B’. Then release the mouse
button.
The graph window will now show a zoomed view of the area selected with the
mouse.
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To un-zoom you can select ‘view full graph’ from the ‘view menu’, or by
holding the left mouse button down on the graph and moving UP to the LEFT
(opposite to zoom in).
2.7.2 Pan
You can move the whole graph by holding the right mouse button and
dragging the mouse around.
2.7.3 Cursor
When ‘Real time’ is stopped, the full graph is shown in the window. A dashed
line will also appear on the screen, this is the cursor. Wherever this is on the
graph, the value of each trace it crosses will be shown at the bottom of the
screen.
If you click on the graph using the left mouse button, the cursor will jump to
that point.
You can select the cursor with the mouse and drag the cursor across the
graph.
Instead of using the mouse to move the cursor, you can use the left and right
arrow keys on your keyboard. Holding down the shift key as well, will move
the cursor in larger steps.
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2.7.4 Show / Hide data
You can temporarily remove data from the graph by clicking on its title eg
‘Front left (FL)’ at the bottom of the screen.
This will remove the selected line from the graph. To show the data, just click
again where the title was shown.
3.
Traction Control Settings
To access the parameters stored in the traction control, select read from the
options menu. The settings will then be displayed in the software.
3.1
Configuration
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Maximum difference in wheel speeds
Glitch rejection allows unfeasible differences in wheel speeds to be rejected.
Program this value to ignore differences that could not possibly be generated
by driving the wheels. E.g. – If in a launch condition the maximum wheel spin
generated is 50 Km/h, program the maximum difference to 70 Km/h, any
spikes or glitches over this value will then be rejected.
Default value: 655.35 kmh
Minimum Operating Thresholds
Speed
This should be set to the minimum speed below which the sensors do not pick
up any movement. This can be discovered by using the rela time function of
the software. Slowly pull away and monitor the wheel speeds in the realtime
tab screen and wait for all four wheel speeds to register.
e.g. – If all the wheel speeds are picking up correctly above 14 Km/h, program
the Speed to 14.0 Kmh.
Default value: 14 kmh
Revolutions
The traction control system can be programmed not to operate below a
certain engine Rpm. This is to stop the engine becoming 'bogged down'. If the
car has a high revving 'cammy' engine, set this to the point at which the
engine just starts to come on power.
Default value: 2000 RPM
Dry , Wet
This is set to allow a small difference in wheel speeds to enable turning sharp
corners at low speeds. The system compares right front with right rear and left
front with left rear. Adjust this value if the system cuts going round sharp
corners when no wheel spin is occurring. Two values can be entered (WET
and DRY) and can be switched using the manual adjuster to select wet or dry
settings.
e.g. – Use the ‘Real Time’ function of the software to log data. Drive the
vehicle and turn a sharp corner. Save the data from the graph window and
examine the file. Look at the maximum difference between the wheel speeds
(left front and left rear or right front and right rear) and enter this value.
Default value: Dry 4.5 kmh, Wet 3.5 kmh
Turning
Minimum turning speed
The system constantly compares wheel speed values. If it detects a difference
in wheel speeds greater than the turning speed for a preset period of time
(Time before turning is true) it assumes the vehicle is cornering and adds the
value set in the straight line override to all the Percentage slip values.
Default value: 0.45 kmh
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Time before turning is true
The period of time the wheel speeds must exceed the turning threshold before
the system assumes the vehicle is cornering.
Default value: 0.2 Seconds
Straight-line override
The system has software that calculates when the car is cornering and when
the car is traveling in a straight line. Generally more traction control needs to
be applied when the car is cornering. This value adds a percentage to each of
the percentage slips when the traction control knows the car is traveling in a
straight line. E.g. – If the straight-line override is set to 5%, this value will be
added to each of the percentage slip values when the car is traveling in a
straight line.
Default value: 5 %
Cylinders
The traction control system must be configured to the correct number of
cylinders of the engine.
e.g. For a 4 cylinder engine a value of 4 must be entered. If the incorrect Rpm
is displayed under diagnostics, then change this value until the right Rpm is
shown.
Default value: 4
Smoothing
Can be set from 0 - 5, level is normally set at 0 and should be increased
depending upon the severity of the glitching. Level 5 should only be used for
data logging.
Default value: 0
Misfire mode
The traction control has two modes of engine misfire that define how the data in the
cut tables is used.
In non-sequential mode (Not spark cut units)
With the 'Non sequential mode' enabled each level of cut will cause the traction
control to cut a pre-determined factory set number of injectors. Different numbers of
injectors are cut depending upon the severity of the misfire applied. The specific of
how the injectors are cut over a period of time is defined by the data in the
corresponding cut tables.
‘Sequence 1’ will control injector 1.
‘Sequence 2’ will control injector’s 1 and 2.
‘Sequence 3’ and ‘Soft Cut’ will control injector’s 1,2 and 4.
‘Hard Cut’ and ‘integral Cut’ will control all injector’s.
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e.g. (using above Sequence 1)
Injector 1
Miss
Injector 2
Injector 3
Injector 4
Fire
Fire
Fire
Fire
Fire
Fire
Fire
Miss
Fire
Fire
Fire
Fire
Fire
Fire
Fire
Fire
Fire
Fire
Fire
Miss
Suggested cut table settings when using non sequential mode.
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The reason that most of the cut tables consist entirely of , is because their
severity is dictated by the number of injectors that are controlled.
In sequential mode
With the 'Non sequential mode' turned off, the next firing injector or spark will be
controlled by the cut sequence.
e.g. (using above Sequence 1)
Injector 1
Miss
Injector 2
Injector 3
Injector 4
Fire
Miss
Fire
Fire
Miss
Miss
Miss
Fire
Miss
Suggested Cut Table settings when using sequential mode.
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With this method the severity of the misfire is directly associated with the data in the
cut table.
To ensure the system achieves the quickest possible response, always begin each
cut table with a
NOTE: Sequential mode can only be activated if, the value in the ‘cylinder’ box in the
configuration tab equals the exact number of cylinders the vehicle actually has.
3.2
Launch Control
Common Settings
Slip override for slow speed getaway
An override percentage that is added to the overall percentage slip values
during launch mode.
E.g. If Slow Override speed threshold is set to 3.5Kmh and the percentage
slip override for slow speed getaway is set to 15%, then below 3.5 Kmh 15%
is added to each of the slip values.
Default value: 15 %
Delay slip override
Delay Slip Override, used in conjunction with the start delay. The value adds a
percentage override to the slip parameters for a set period of time
programmed as the Start Delay.
Default value: 0 %
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i.e. if ‘Delay slip override’ is set to 5% and ‘Start delay’ is set to 2 seconds,
5% will be added to each of the percentage slip values for 2 seconds during
launch mode.
Slip to reinstate traction control
The slip threshold, at which the traction control will switch from Launch mode
to normal Traction Control operation.
Slip to reinstate Traction
Control (%)
Default value: 5 %
DRY Settings , WET Settings
Hard Cut
Set the hard cut slightly above the soft cut to achieve a smooth rev-limit.
E.g. If the soft cut is at 4500 Rpm, set the hard cut at 4750 Rpm.
Two values can be entered under WET and DRY and can be switched using
the manual adjuster to select wet or dry settings.
Default value: Dry 4800 RPM , Wet 4300 RPM
Soft Cut
Set the soft cut rev-limit to just below the desired Rpm. Two values can be
entered under WET and DRY and can be switched using the manual adjuster
to select wet or dry settings.
Default value: Dry 4500 RPM , Wet 4000 RPM
Start delay
The period of time at which the ‘Delay slip override’ percentage is added to
the overall percentage slip values during launch.
Default value: Dry 2 seconds , Wet 2 seconds
Slow override speed threshold
This threshold works in conjunction with the ‘Slip Override For Slow Speed Getaway’.
Below this speed the Percentage Override setting is added to each of the percentage
slip values.
Default value: Dry 30 kmh , Wet 25 kmh
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3.3
Traction Control Manual V3.0
Slip Control
The severity of the misfires can be changed by modifying any of the cut
tables.
Sequence 1,2 & 3
Placing a
from firing.
will allow an injector to fire, putting a
will prevent the injector
To quickly set all to either fire or non-fire, use the appropriate button in the
‘Set all to’.
Assert at
When a manual adjuster is fitted, the level set i.e. 5% is known as the ‘set
allowable level’. If no adjuster is fitted, the ‘set allowable level’ is set to 0.
Assert at is the value at which the cut table is used above the ‘set allowable
level’.
e.g. Manual adjuster set to 10%
Sequence 1 ‘assert at’ is set to 5%
The traction control will allow the wheels to have a maximum 10% of slip.
Then at 15% slip (Manual adjuster + assert at) the traction control will
start to reduce power using cut sequence 1 until it returns to a maximum
of 10% slip.
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To reduce power the traction control uses four levels of progressively intrusive
cut. These are sequence 1,2,3 and Integral.
If the traction control is reducing power using sequence 1 and the slip reaches
the value set for sequence 2, then the traction control will start to use
sequence 2 instead of sequence 1.
Note: These same cuts are used for both wet and dry settings.
Default value: Sequence1 5%, Sequence2 10%, Sequence3 15%
Integral settings
Placing a
from firing.
will allow an injector to fire, putting a
will prevent the injector
Integral setting effect all of the cylinders even if the unit is set up for nonsequential mode.
Start After
If the wheels continue to slip despite the activation of sequence 3 cut then
after a period of time defined by the ‘Start after’ value then the integral cut is
applied.
Default value: 0.04 Seconds
3.4
Wheels
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Driven / Reference
Wheel Diameter
The wheel diameters must be entered in millimeters, and must be the
diameter of the tyre. This allows the system to calculate the rolling
circumference.
Press the
button and a window will appear.
This lets you input the values as shown on the side of your tyre.
E.g. 205 / 45 ZR 17
Default value: 550mm
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Pulses per revolution
The number of reference pulses per revolution must be entered for the
reference and driven wheels of the car, this value corresponds to the number
of slots, holes or teeth per revolution in each of the sensor discs.
Default value: 40
Reference / Driven
The system is fully configurable to allow any wheel speed to represent any
wheel. This makes life easier when wiring up the system. The box must be
informed of which traction control wheel speed channel is connected to which
wheel. On a rear wheel drive car, set front channels to ‘Reference’ and rear
channels to ‘Driven’. On a front wheel drive car, set the front channels to
‘Driven’ and the rear channels to 'Reference'.
Wheel Assignment (FL ,FR ,RL ,RR )
In a similar way to reference/driven wheel assignment the left and the right
wheels must be setup.
Note :
The channels corresponding to front and rear, can be assessed by using the
‘Real time’ function, and spinning each separate wheel in turn.
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RACELOGIC
3.5
Traction Control Manual V3.0
Rev limits
Moving rev limiter
Soft cut / Hard cut
Similar to the rev limits used for the Launch Control Function except these are
operated whilst the car is moving. Again, the soft cut is operated at, say 5500
RPM and the hard cut is operated at a higher engine speed, say 5750 RPM.
These rev limits are used for the Power Shift function. It is activated by the
clutch switch, and allows full throttle gearshifts to be carried out whilst the
engine is prevented from over-revving.
Default value: Soft cut 65535 RPM , Hard cut 65535 RPM.
Note: a value of 65535 will set this function to OFF.
Clutch switch
The polarity of the clutch switch is normally open, which is closed when the
clutch pedal is depressed. If a normally closed switch is used, i.e. one that
breaks connection when the clutch is depressed, tick the box.
Default value: enabled
Soft / Hard rev-limit settings
Placing a
from firing.
will allow an injector to fire, putting a
will prevent the injector
To quickly set all to either fire or non-fire use the appropriate icon in the ‘Set all to’.
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RACELOGIC
3.6
Traction Control Manual V3.0
Data Logging (Only for units with battery backup memory)
The Data Logging feature allows you to record all wheel speeds and traction
control activity over the period of time the traction control was active. The
system will retain all information even if the box is switched off, but once the
system has been switched off, the next lot of data will gradually overwrite the
previous, so only the most recent run is recorded.
Enable Data Logging
Switch-able function, that allows data logging to be used.
Note: Data logging must be turned off for the diagnostic functions to work.
Default value: off
Sample Rate
The sample rate is a compromise between the resolution of the results versus
the length of time available for logging. That means you could select ‘244Hz’
for the sample rate, which will give around 244 samples every second, but will
only allow 1.5 minutes of sampling. It is best to use a quicker sample rate
when data-logging standing starts, and a slower one when logging over the
period of a race.
Default value: 244 Hz
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Traction Control Manual V3.0
Sample Rate (Hz)
Total log time
244
122
1 Minute 29 Seconds
2 Minute 58 Seconds
4 Minute 28 Seconds
5 Minute 57 Seconds
7 Minute 27 Seconds
8 Minute 56 Seconds
10 Minutes 26 Seconds
16 Minutes 24 Seconds
23 Minutes 51 Seconds
31 Minutes 19 Seconds
38 Minutes 46 Seconds
46 Minutes 13 Seconds
53 Minutes 41 Seconds
61 Minutes 8 Seconds
68 Minutes 36 Seconds
81
61
49
41
35
22
15
12
9
8
7
6
5
Clear Ram
Click on this button to clear the ram of any previous data. Alternatively the
clear ram switch can be pressed when the system is powered up.
Upload
Click on this button to upload the data from the unit. The data will be visible in
the graph window.
3.7
Real time
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If ‘Real time’ has been started, the values from the traction unit will be
displayed on this screen. The values shown are the four-wheel speeds in
Kmh, Engine RPM, and cut level status.
3.8
Test
This allows you to apply one of the cut sequences from the traction control to
the engine.
The cut will last for the length of time set in ‘Misfire for’.
Note: You cannot send a test command whilst the ‘real time’ function is
running.
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RACELOGIC
4.
Traction Control Manual V3.0
FINE TUNING
This section gives a few pointers to common problems associated with the traction
control set up.
The following section requires the use of a laptop computer.
Q-
The traction control reduces engine power before it gets a chance to
produce full power.
A–
The Minimum RPM before operation (Configuration tab, Minimum operating
thresholds, Revolutions) can be raised. This is set to 2000 as standard. If
the car is a high revving car it may need raising to where the car comes on
cam.
Q-
The car appears to cut on cornering when no wheel spin is being
produced.
A-
Using the real time function in the software check that wheel spin is definitely
not being produced. If it is not raise the Minimum difference by 1-2 Km/h.
This should allow the car to turn a tighter corner without the traction control
cutting in.
Q-
On all settings of the adjuster the car feels like it is being held back all
the time.
A-
Increase the Percentage slip values (Slip control tab).
Q-
The car still over steers .
A-
Reduce the Percentage Slip values (Slip control tab), and reduce Minimum
difference (Configuration tab) by 0.5-1.5Km/h.
Q-
The Car bogs down on Launch Control.
A-
Increase the Launch control rev-limits (Rev limits, Moving rev limiter).
Q-
The Car produces lots of wheel spin on Launch Control.
A-
Reduce the Launch control rev-limits (Launch control tab, Dry/Wet settings).
Q-
The car appears to bog down pulling out from tight junctions.
A-
Raise the ‘Slow override speed threshold’ and ‘slip override for slow speed
getaway’ (Launch control tab).
Q-
The ABS sensors do not pick up until 18Km/h and is causing the
traction control to misfire the car in first gear.
A-
Raise the Minimum speed threshold to above 18Km/h. (Configuration tab,
Minimum operating thresholds, speed).
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Q-
The traction control reduces the power enough on corners but in a
straight line the car still wheel spins.
A-
Lower the Straight-line override, this will reduce the slip allowed in a straight
line. (Configuration, Turning).
Q-
The car has different size wheels front to rear, which means the speed
of the wheels is different.
A-
Measure the diameter of the front and rear wheels and type in the Wheel
diameter - Driven, Wheel diameter - Reference. (Wheels tab).
Q-
In the software the speed of the wheels is different to the speedometer.
A-
The pick-up points that the ABS sensors are picking up from are different to
the value in the traction control. By working out the difference in speed to
what is in the software, adjust the Number of pulses per rev – Driven and
Number of pulses per rev – Reference until they are the same. e.g Peugeot
306 Rallye 24 PPR. (Wheels tab).
Q-
The RPM value in the software is different to what is showing on the Rev
counter.
A-
The Number of cylinders value is incorrect. Adjust the value until both values
are the same. (Configuration tab, Cylinders).
Q-
Which is the best setting for dry weather?
A-
The best setting for dry weather is down to the driving style of the driver. The
adjustable system allows the driver to choose a setting which suits them best.
We would suggest 10% slip as this has proved to give the best acceleration in
tests, which is position 3 on the adjuster.
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Traction Control Manual V3.0
5.
SELF-FIT SENSORS
5.1
Sensor
5.2
Pickup Methods
The exact method used to locate and trigger the wheel speed sensors is absolutely
critical to the correct operation of the Traction Control System. There are a number of
different ways to construct the pick-ups, the slotted disc method, the toothed wheel,
hole detection and bolt detection.
Sensor’s must be rigidly mounted so no large vibrations occur that will move the
sensor head more than 0.5mm away from the reference points and the head must be
at 90° to the surface. If a sensing plate / disc is used, it must not be warped or
mounted at an angle that would cause the distance between the head and disc to
change by more than ±0.5mm. The material used for the reference must be of a
ferrous type, if in doubt, check to see if it attracts a magnet. The reference can be
painted or plated.
To achieve the best results, the sensor should be at least 40mm away from the
center of rotation of the reference. The number of reference holes / teeth / slots
should be between 4 & 120, there can be a difference from front to rear as this can
be programmed in at a later stage.
Slotted disc - (See diagram 12a for construction)
Toothed wheel - The teeth have to be clean without any scratches in the metal that
would cause false signals at high revolutions. The minimum size of teeth is 2mm
across. (See diagram 12b for construction)
Diagram 12a - Slotted Disk
12b - Toothed Wheel
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Hole detection - The reference holes have to be bigger than the head of the
sensor, bigger ones are preferable.
Other - If none of the methods above are practical, then it is worth noting that the
sensor can pick up from evenly spaced fixing bolts, or cooling vanes in a brake disc
etc.
It is recommended that the sensors are shielded from any stray stones thrown from
the wheels and kept well away from any other source of electrical noise (HT leads,
radio leads, coil power supply leads etc.).
Racelogic have fitted numerous cars and have found that the best method of fitment
is to pick up from the back of the wheel fixing bolts.
5.3
Sensor Fitting
The sensor is mounted by the two nuts that are supplied with the sensor. When
tightening the sensor, care has to be taken as the sensor can be split in half or crossthreaded if over tightened. It is recommended that a thread lock be used to stop the
nuts becoming loose.
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5.4
Traction Control Manual V3.0
Sensor Gapping
The sensor will work up to a range of 2mm. Try to gap the sensor to 1.5mm away
from the pickup point, this will allow for any movement.
Power up the traction control System and keep moving the sensor closer until the
LED on the sensor is illuminated.
NOTE – If you are picking up from a wheel hub etc, it is very important that the gap
on the sensor does not move when the car is under hard cornering. This could
cause the gap to either close up or open up. This could cause the sensor to drop out
and the traction control to stop working correctly.
5.5
•
•
•
5.6
Sensor Checklist
LED on the sensor must be illuminated.
Sensor face must be at 90° to the surface.
Over one revolution, the sensor to plate distance must not vary more than
±0.5mm.
Running Wheel speed Wires
It is very important that the wires marked with each corner of the vehicle are
connected to the sensors in those corners. The system will not work if this is
done incorrectly.
The system is programmed at the factory to reflect these settings. Orientation will be
as the driver sits in the vehicle. See Diagram 13.
FRONT LEFT
FRONT RIGHT
REAR LEFT
REAR RIGHT
Diagram 13 - Wheel speed Orientation
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RACELOGIC
5.7
Traction Control Manual V3.0
Connecting Sensors
Once the sensors have been fitted each of the four wires must be run to the sensors.
Each wire has two cores with red and blue shielding. Connect each wire to the
sensor as follows.
•
•
•
•
•
•
Run each wire to the sensors.
Place a length of Heat shrink over the wire.
Strip back the insulation exposing the two cores.
On the red wire crimp the female contact, and on the blue wire crimp the male.
Push the crimps into the Sure Seal (waterproof rubber connector that comes with
the sensors), red to pin 1 and blue to pin 2, ensuring they are pushed all the way
in.
With a heat gun shrink down the heat shrink.
Sure-Seal Pin
1
2
5.8
TC Colour
Red
Blue (GND)
Sensor Colour
White
Black
Programming the PPR (pulses per revolution)
The traction control will need to be programmed for the amount of pick up points that
are being used.
Once these have been changed and downloaded to the unit, the system will need to
be powered down for the box to register the changes.
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5.9
Traction Control Manual V3.0
Testing
Once all the sensors have been mounted and connected, the traction control can be
powered up. Each wheel in turn can be spun and the LED on the sensor should
flash at each pick up point.
The car will now need to be tested by driving the vehicle. The best way to do this is
by using the real time function of the software that has been supplied with the traction
control.
The above screen shows that two of the sensors are being picked up earlier than the
other two. This is due to the rear having more pick up points than the front. This is
not a problem unless the two sensors that pick up later are not registering before
14km/h.
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When the sensors are working correctly, they should look like the screenshot below,
with all of the wheel speeds overlaying each other. Note - when the car turns the
wheel speeds will all be different, the vertical line shows this.
The screen shot below shows a sensor dropping out. This could be due to the sensor
not being close enough, not at 90 degrees to the pick up point or the sensor not
being mounted securely.
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5.10
Traction Control Manual V3.0
Common Sensor Problems and Solutions
Q – The LED on the sensor will not flash.
AAA-
Check that the traction control is powered up.
Check the sensor has been wired up correctly.
Check that the pick-ups are ferrous.
Q – The Car misfires when driving.
AA-
Check that all sensors are all working using the real time function of
the software..
Check that the sensors are coming in before 14km/h. If not adjust the
minimum speed.
Q – The car works in a straight line, but under hard cornering the system
misfires.
A-
Use the software to see if the car is misfiring due to wheel spin or
sensors dropping out.
Q – The Sensor drops out when using the software.
AA-
The sensor is too far away, move the sensor closer.
The sensor is not mounted rigidly.
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RACELOGIC
6.
Traction Control Manual V3.0
CLUTCH SWITCH
The clutch switch allows the driver to make gear changes without having to back off
the accelerator. This allows for faster gear changes and quicker acceleration times.
Tests have shown up to 0.1 seconds can be gained per gear change.
6.1
Fitting a switch
The switch needs to be mounted on the clutch pedal, in a place where the contact
makes or breaks when the clutch is depressed. A suitable switch is a motorcycle
rear brake switch, this is a plunger type switch that can be adjusted to switch at the
biting point of the clutch. Rear brake light switches can also be used. These have
not proved as successful on road cars as by just resting your foot on the clutch pedal
is enough to switch the rev limit on. Another method that can be used is a hydraulic
switch, these are easier to install on race cars.
The chosen switch is wired up by connecting one side of the switch to GND and the
other to pin 20 on the traction control loom.
The traction control is set up for a normally open contacts, this can easily be adjusted
in the software by changing the following in the launch control menu.
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RACELOGIC
6.2
Traction Control Manual V3.0
Setting the Clutch Switch REV Limits
These rev limits are similar to the rev limits used for the launch control function
except they are operated whilst the car is moving. The difference between the soft
and hard cut is set to 250 Rpm.
The rev limits will need to be set 1000-500 Rpm lower than the cars own rev limit.
The full throttle shift should be smooth, so adjust the rev limits to get the smoothest
change.
6.3
Testing the Clutch Switch
The easiest way to test the switch is to drive the car on a quiet road. While still rolling
place the car into neutral, press the clutch and raise the revs up to the new rev-limit.
By placing the accelerator hard down the car will settle on the new rev-limit, until the
clutch is released.
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RACELOGIC
7.
Traction Control Manual V3.0
MSD Interface
Racelogic multiple spark discharge (MSD) traction control works with the crank signal
feeding the MSD unit. Usually there will be two wires from the crank sensor to the
MSD unit, one will be connected to GND and the other will carry the crank signal,
See Diagram 14.
MSD Unit
Diagram 14 – Signals To An MSD Unit
7.1
Crank Sensor
Connecting the MSD Cut
The signal wire feeding the MSD unit should be cut and the Traction Control Ignition
cut interface should be connected as in Diagram 15.
MSD Unit
Green/
Black
Green
Crank Sensor
TC/MSD
Diagram 15 – Traction control MSD unit
Traction control Pin Number
12
13
Traction control Colour
Green
Green/Black
Crank Colour
We highly recommend that the traction control should be interfaced with the car using
connectors so that the car can easily be returned to run as standard. This can be
done using a ‘bullet’ type connector.
•
•
•
7.2
Cut the signal wire on the crank sensor at a convenient position.
Remake the connection with connectors.
Connect the appropriate connector to the traction control wiring to connect the
traction control.
RPM
The RPM signal will be taken from inside the MSD, so no extra connections will need
to be made.
NOTE - The cylinders value in the traction control may need to adjusted to get the
correct value.
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RACELOGIC
8.
Spark cut
8.1
General
Traction Control Manual V3.0
The spark cut traction control unit, works by monitoring the signal used by the coil too
generate a spark. If traction control is required this signal is interrupted so that
individual firing pulses are selectively missed out resulting in a reduction of engine
power.
8.2
Connecting the spark cut
Locate the negative side of the coil(s). Generally a coil will have two terminals, a
positive which will show a constant +12V and a negative which carries the signal that
the coil will amplify.
The traction control has two coil interface wires (pins 12 and 13). For a single coil
application join both these wires together and attach to the negative side of the coil.
For a twin coil application use both wires separately.
For spark cut sequential mode must be selected (Configuration tab).
8.3
RPM
No external RPM signal is required.
Note: the cylinder value in the traction control may need to be adjusted to get the
correct RPM reading.
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