AiM Infotech Marelli SRAE-SRT ECU Release 1.02

AiM Infotech Marelli SRAE-SRT ECU Release 1.02
AiM Infotech
Marelli SRAE-SRT ECU
Release 1.02
This tutorial explains how to connect Marelli SRAE and Marelli SRT ECUs to AiM devices.
1
Hardware check
All AiM devices have a 120 Ohm CAN termination resistor. Before connecting Marelli CAN bus to any of
them check that only two termination resistors work on the CAN bus once the network is completed.
With a multimeter check the resistance between CAN High (positive probe) and CAN Low (ground
probe).
• If the reading is 120 Ohm: there is one termination resistor on the ECU site, no additional
operations are required: connect AiM device to the vehicle CAN bus.
• If the reading is 50-60 Ohm: there are two termination resistors: either AiM termination resistor –
located on the wiring – or one of the resistor located on the vehicle CAN bus are to be removed;
• If the reading shows a very high resistance (nearly infinite): no termination resistor is present: add a
resistor on the ECU CAN bus and leave the one included in AiM device.
2
Software setup
Marelli SRAE and Marelli SRT ECUs need a software setting through "Magneti Marelli Vision"
application to correctly communicate with AiM devices. Run it and follow carefully these instructions.
•
Follow the path: File –> Open
1
•
"Open File" panel appears –> Select "SRA_XXXXXX" folder –> Select "CFG" folder.
•
Select the configuration file to open –> Click "Open".
2
•
Follow the path: Map –> Map files (PTA)...
•
ReadWrite Map (PTA) File panel appears: click "Dir.."
•
Select "PTA" folder –> Select the file to open –> Click "Open"
3
•
ReadWrite Map (PTA) File panel appears: click "Edit..."
•
PTA Table panel appears: click "FIND"
4
•
Fill in "Data Elements" and if the panel re-appears click "No"
It is now necessary to set these parameters:
• Data Acquisition CAN Line (paragraph 1.1)
• Frequencies repartition table (paragraph 1.2)
• Data Elements Table (paragraph 1.3)
2.1
Setup of Data acquisition CAN line
These Marelli ECUs features two CAN Lines; it is therefore necessary to set via software the CAN Line
that will be used when connecting AiM devices.
•
Double click "Data acquisition CAN line".
5
To change the CAN line set by default – if necessary – follow these steps:
•
•
•
•
•
right click on the cell highlighted in the image here below
enable "fill" checkbox
fill in the CAN line to be used (1 or 0)
click "OK"
Press "Esc"
2.2
Setup of Frequencies repartition table
To set the data transmission frequencies used by AiM devices follow these instructions.
•
Double click "Frequencies repartition table"
6
To properly set this table:
•
•
•
•
right click on the cell highlighted in the image here below
enable "fill" checkbox and fill in the desired frequency (for example 0x64)
click "OK"
Press "Esc"
2.3
Setup of Data Elements Table
This table sets ECU channels.
•
Double click "Data Elements Table"
7
The table that appears is made up of four columns that correspond to the four fields of each record.
Each row corresponds to an ECU channel. Change cell digits as shown before, using values shown in
the table of paragraph 1.4.
When the table has been completely filled in and ESC is pressed again, the software comes back to the
previous page: quit clicking on the red cross top right of the window.
8
It is necessary to save changes: click "Yes" and then fill in "Save as" panel and click "Save".
Click "Exit"
Clix "Tx" to transmit the configuration to the ECU.
9
COUNTER
ADDRESS
TYPE
GAIN
OFFSET
1
00210270
00000002
3F800000
00000000
2
00000000
00000001
3F800000
00000000
3
00210080
00000082
3F800000
00000000
4
00000000
00000001
3F800000
00000000
5
0021008C
00000082
3F800000
00000000
6
00000000
00000001
3F800000
00000000
7
002100A0
00000082
3F800000
00000000
8
00000000
00000001
3F800000
00000000
9
0021008A
00000082
3F800000
00000000
10
00000000
00000001
3F800000
00000000
11
002100A8
00000082
3F800000
00000000
12
00000000
00000001
3F800000
00000000
13
00210088
00000082
3F800000
00000000
14
00000000
00000001
3F800000
00000000
15
00210086
00000082
3F800000
00000000
16
00000000
00000001
3F800000
00000000
17
00210084
00000082
3F800000
00000000
18
00000000
00000001
3F800000
00000000
19
002100A4
00000082
3F800000
00000000
20
00000000
00000001
3F800000
00000000
21
002100BC
00000002
3F800000
00000000
22
00000000
00000001
3F800000
00000000
23
00210392
00000082
3F800000
00000000
24
00000000
00000001
3F800000
00000000
25
00210082
00000082
3F800000
00000000
26
00000000
00000001
3F800000
00000000
27
0021008E
00000082
3F800000
00000000
28
00000000
00000001
3F800000
00000000
29
002100AA
00000002
3F800000
00000000
30
00000000
00000001
3F800000
00000000
31
00210094
00000082
3F800000
00000000
10
32
00000000
00000001
3F800000
00000000
33
002100B4
00000002
3F800000
00000000
34
00000000
00000001
3F800000
00000000
35
002100BA
00000002
3F800000
00000000
36
00000000
00000001
3F800000
00000000
37
00210E06
00000002
3F800000
00000000
38
00000000
00000001
3F800000
00000000
39
002100A6
00000082
3F800000
00000000
40
00000000
00000001
3F800000
00000000
41
00210D25
00000001
3F800000
00000000
42
00210D26
00000001
3F800000
00000000
43
00210D17
00000001
3F800000
00000000
44
00210D18
00000001
3F800000
00000000
45
00210846
00000001
3F800000
00000000
46
00210845
00000001
3F800000
00000000
47
0021083D
00000001
3F800000
00000000
48
00210130
00000001
3F800000
00000000
49
00210385
00000001
3F800000
00000000
50
00210383
00000001
3F800000
00000000
51
00210381
00000001
3F800000
00000000
52
002105B7
00000001
3F800000
00000000
53
002105B8
00000001
3F800000
00000000
54
002105B6
00000001
3F800000
00000000
55
002105B5
00000001
3F800000
00000000
56
00210386
00000001
3F800000
00000000
57
002100B0
0000820E
3F800000
00000000
58
00000000
00000001
3F800000
00000000
59
00210A18
0000820E
3F800000
00000000
60
00000000
00000001
3F800000
00000000
61
00000000
00000001
3F800000
00000000
62
00000000
00000001
3F800000
00000000
63
00000000
00000001
3F800000
00000000
64
00000000
00000001
3F800000
00000000
11
3
Wiring connection
SRAE and SRT ECUs feature the same communication protocol based on CAN but the hardware is
different.
•
•
SRAE has two front connectors: a 60 pins and a 94 pins. The CAN bus is on the 94 pins connector.
SRT has two front Deutsch connectors: AS218-35PA (with yellow ring) and AS218-35PN (with red
ring). The CAN bus is on the AS218-35PA (yellow ring).
Here below you see the two ECUs – SRAE on the left and SRT on the right – with connectors indication
and connector pinout.
12
Here is connection table
SRAE Connector pin
Pin function
AiM cable
56
CAN1 High
CAN High
78
CAN1 Low
CAN Low
80
CAN0 High
CAN High
58
CAN0 Low
CAN Low
SRT Connector pin
Pin function
AiM Cable
21
CAN1 High
CAN High
29
CAN1 Low
CAN Low
40
CAN0 High
CAN High
30
CAN0 Low
CAN Low
Please note: remember to connect the CAN line you set in software setup (paragraph 1.1).
4
AiM device configuration
Before connecting the ECU to AiM device set this up using AiM Race Studio software. The parameters
to select in the device configuration are:
•
•
ECU manufacturer “Marelli”
ECU Model "SRA_SRAE_SRT"
13
5
Available channels
Channels received by AiM devices connected to "Marelli" "SRA_SRAE_SRT" protocol are:
ID
CHANNEL NAME
FUNCTION
ECU_1
SRA_RPM
RPM
ECU_2
SRA_TPS1
Throttle position sensor bank 1
ECU_3
SRA_PDL1
Active throttle position bank 1
ECU_4
SRA_WTEMP
Engine coolant temperature
ECU_5
SRA_OILP
Oil pressure
ECU_6
SRA_OILT
Oil temperature
ECU_7
SRA_FUELP
Fuel pressure
ECU_8
SRA_ATMP
Atmospheric pressure
ECU_9
SRA_MAP
Manifold air pressure
ECU_10
SRA_AIRT
Intake air temperature
ECU_11
SRA_AFR
Air fuel ratio
ECU_12
SRA_ADV
Ignition advance
ECU_13
SRA_TPS2
Throttle position sensor bank 2
ECU_14
SRA_PDL2
Active throttle position bank 2
ECU_15
SRA_TPS
Throttle position sensor
ECU_16
SRA_TCK1
Thermocouple 1
ECU_17
SRA_GEAR
Engaged gear
ECU_18
SRA_LAMBDAmV
Lambda value in mV
ECU_19
SRA_SPEED
Speed
ECU_20
SRA_TFUEL
Fuel temperature
ECU_21
SRA_KINGFIL
Injection Correction During Up shift
ECU_22
SRA_KTEATFIL
Advance Correction F (Up shift)
ECU_23
SRA_PWM1
Duty cycle of Pwm1
ECU_24
SRA_PWM2
Duty cycle of Pwm2
ECU_25
SRA_DPV
Derivative pressure
14
ECU_26
SRA_DWG
Duty cycle waste gate
ECU_27
SRA_PRLD
Rotary switch position for bang start limiter
ECU_28
SRA_ITSP
Injection trim switch position
ECU_29
SRA_ASTP
Absolute throttle position (default 90%)
ECU_30
SRA_KAWT
Coefficient engine cooling temperature multiplier
ECU_31
SRA_KABARO
Ign coefficient barometric pressure multiplier (Cranking)
ECU_32
SRA_IKTA
Coefficient intake air temperature multiplier (Cranking)
ECU_33
SRA_IKTF
Coefficient Fuel temperature multiplier (Cranking)
ECU_34
SRA_IKBARO
Inj. coefficient barometric pressure multiplier (Cranking)
ECU_35
SRA_IKADM
Injection correction F (Padmission)
ECU_36
SRA_CLAV
Advance Correction F (Trimmer Position)
ECU_37
SRA_PDL
Active throttle position
ECU_38
SRA_TPSE
Throttle position sensor (Encoder)
15
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