Warning engine light SUZUKI SWIFT 2008 2.G Service Owner's Manual
Page 555 of 1496
Downloaded from www.Manualslib.com manuals search engine ABS: 4E-16
Serial Data Link Circuit CheckS7RS0B4504011
Inspection
WHT/BLU
BLK12V
12
BLK
E03-14
E03-13
E03-26
WHT/RED
GRN/ORNE03-7WHT/BLUGRN
1
2
3
47
RED/BLK
6
5
11
E03-112V
[A]
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
BLK/ORN
PPL/WHT
8E03-5
912V
+BB
G
B
G1
E03-12
E03-6
REDWHT
11
G28-8
G28-10
REDWHTE46-1
E46-2RED
RED
WHT
WHT
10
11
G37-2
G37-4
I6RS0C450008-01
[A]: ABS hydraulic unit / control module  connector (viewed from terminal side)
1. Battery 4. Circuit fuse box 7. Lamp driver module 10. BCM
2. Main fuse box 5. Combination meter 8. Data link connector (DLC) 11. CAN driver
3. Ignition switch 6. ABS warning light 9. To ECM, BCM and SDM 12. ABS hydraulic unit / control module assembly
Step Action YesNo
1 1) Turn ignition switch to ON position.
Does ABS warning light come ON? Go to Step 2.
Go to Step 6.
2 1) Turn ignition switch to OFF position. Are main fuses for ABS pump  motor and ABS solenoid in 
good condition? Go to Step 3.
Replace fuse and check 
for short.
3 1) Disconnect ABS hydraulic unit / control module  connector.
2) Check for proper connection to ABS hydraulic unit /  control module connector at terminal “E03-7”.
3) If OK then turn ignition switch to ON position and  measure voltage between terminal “E03-7” and vehicle 
body ground.
Is it 10 – 14 V? Go to Step 4.
“GRN/ORN” wire circuit 
open.
4 1) Turn ignition switch to OFF position. 2) Check for proper connection to ABS hydraulic unit / control module connector at terminals “E03-1” and “E03-
14”.
3) If OK then turn ignition switch to ON position and  measure voltage between each terminal of “E03-1”, 
“E03-14” and vehicle body ground.
Are they 10 – 14 V? Go to Step 5.
“WHT/RED” and / or 
“WHT/BLU” wire circuit 
open.  
Page 560 of 1496
Downloaded from www.Manualslib.com manuals search engine 4E-21 ABS: 
DTC C1057: Power Source CircuitS7RS0B4504014
Wiring Diagram
DTC Detecting Condition
The ABS control module monitors the power source voltage at terminal  “E03-14”. When the power source voltage 
becomes extremely high or low while vehicle is running at more than 20 km/h  (13 MPH), this DTC will be set. As soon 
as the power source volta ge becomes normal, the ABS warning light will be  turned off and the ABS control module will 
return to normal operation, bu t the set DTC will be remain.
DTC Troubleshooting
[A]: ABS hydraulic unit / control module connector  (viewed from terminal side) 2. Main fuse box
1. Battery 3. ABS hydraulic unit / control module assembly
E03-14WHT/BLU
1 2
3
BLK
BLK
E03-13
E03-26
[A]
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
12V
I6RS0C450011-01
Step
Action YesNo
1 Was “ABS Check” performed? Go to Step 2.Go to “ABS Check”.
2 1) Disconnect ABS hydraulic unit / control module  connector with ignition switch turned OFF.
2) Check for proper connection to ABS hydraulic unit /  control module connector at terminals “E03-14” and 
“E03-13”.
3) If OK, then turn ignition switch to ON position and  measure voltage between terminals “E03-14” and “E03-
13”. 
Is voltage 9.7 
± 0.3 V or more? Go to Step 5. Go to Step 3.
3 1) Turn ignition switch to OFF. 2) Check for proper connection to ABS hydraulic unit / control module connector at terminals “E03-13” and 
“E03-26”.
3) If OK then turn ignition switch to ON and measure  resistance between each terminal of “E03-13” and “E03-
26” and vehicle body ground.
Is resistance less than 2 
Ω? Go to Step 4. “BLK” wire circuit in 
open or high resistance.
4 1) Measure voltage between positive battery terminal and  vehicle body ground with engine running.
Is voltage 9.7 
± 0.3 V or more? Imperfect short between 
“WHT/BLU” wire circuit 
and body ground.
Check charging system 
referring to “Generator 
Test (Undercharged 
Battery Check) in 
Section 1J”.  
Page 570 of 1496
Downloaded from www.Manualslib.com manuals search engine 4E-31 ABS: 
2) Bleed air from brake system referring to “Air Bleeding of Brake System in Section 4A”.
3) Check each installed part for fluid leakage and  perform “ABS Hydraulic Un it Operation Check”.
NOTE
For new ABS hydraulic unit / control module 
assembly, if “ABS Hydraulic Unit Operation 
Check” has not been performed, ABS 
warning light may flash  when ignition switch 
is turned ON position.
Accordingly preform “ABS Hydraulic Unit 
Operation Check” to stop flashing of ABS 
warning light.
 
Front / Rear Wheel Speed Sensor On-Vehicle 
Inspection
S7RS0B4506005
Output Voltage Inspection
1) Disconnect negative cable from battery.
2) Hoist vehicle a little.
3) Disconnect wheel speed sensor connector.
4) Disconnect wheel speed grommet from vehicle body.
5) Set up measuring devices as shown in figure, the  resistance to 115  Ω and the power supply voltage to 
12 V.
CAUTION! 
Incorrect voltage and/or wrong connection 
cause damage to wheel speed sensor.
 
6) Measure voltage at resistance without wheel  rotation.
If voltage is out of specification, check sensor, 
mating encoder and their installation conditions.
Voltage at the resistance (115 
Ω) without wheel 
rotation
680 to 960 mV
7) Measure voltage at resistance with wheel rotation  and confirm voltage alternately changes between 
high and low voltages.
If voltage does not change with wheel rotation, check 
sensor, mating encoder and their installation 
conditions.
Voltage at the resistance (115 
Ω) with wheel 
rotation
High voltage “a”: 1360 to 1930 mV
Low voltage “b”: 680 to 960 mV
Reference
When using oscilloscope for this  check, check if peak-to-
peak voltage and waveform meet specification.
Peak-to-peak Voltage at the resistance (115 
Ω) with 
wheel rotation
High voltage “a”: 1360 to 1930 mV
Low voltage “b”: 680 to 960 mV
[A]: Front wheel speed sensor 3. “WHT” wire terminal
[B]: Rear wheel speed sensor 4. “BLK” wire terminal
1. Wheel speed sensor connector 5. Power supply (12 V)
2. Resistance (115 Ω )
V
2
5
41
3
43
1
[A]
[B]
I6RS0B460031-02
[A]: Voltage [B]: Time
I5JB0A450027-01
I5JB0A450028-02  
Page 575 of 1496
Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program:  4F-1
Brakes
Electronic Stability Program
Precautions
Precautions in Diagnosing TroublesS7RS0B4600001
To ensure that the trouble diagnosis is done accurately 
and smoothly, observe the following and follow 
“Electronic Stability Program System Check”.
• Diagnostic information stored in ESP® control module 
memory can be cleared as well as checked by using 
SUZUKI scan tool. Before us ing scan tool, read its 
Operator’s (Instruction) Manual carefully to have good 
understanding as to what functions are available and 
how to use it.
• If the vehicles was operated in any of the following  ways, ESP ® warning lamp may light momentarily but 
this does not indicate anything abnormal in ESP ®.
– The vehicle was driven with parking brake pulled.
– The vehicle was driven with brake dragging.
– The vehicle was stuck in mud, sand, etc.
– Wheel spin occurred while driving.
– Wheel(s) was rotated while the vehicle was jacked  up.
• Be sure to use the trouble diagnosis procedure as  described in “Electronic  Stability Program System 
Check”. Failure to follow it may resu lt in incorrect 
diagnosis. (Some other diagnosis trouble code may 
be stored by mistake in the memory of ESP ® control 
module during inspection.)
• When disconnecting ESP ® control module connector 
(1), pull down the lock lever (2) of connector.
When connecting, set the connector on ESP ® 
hydraulic unit / control module assembly and pull up 
the lock lever (2) until it locks. • Communication of ECM, BCM, ESP
® control module, 
keyless start control module (if equipped), steering 
angle sensor and combination meter is established by 
CAN (Controller Area Network).
Therefore, be sure to read “Precautions for Installing 
Mobile Communication Equipment in Section 00” 
before inspection and handling CAN communication 
line.
Precautions in On-Vehicle ServiceS7RS0B4600002
When connector is connected to ESP ® hydraulic unit / 
control module assembly, do not disconnect connectors 
of sensors with ignition switch ON. Otherwise, DTC will 
be set in ESP ® control module.
Precautions in Hydraulic Unit Operation CheckS7RS0B4600003
ESP®  hydraulic unit / control module assembly function 
is checked by correct wheel lock / release condition 
when brake pressure is pressurized / depressurized 
using SUZUKI scan tool. The hydraulic unit operation 
check referring to “ESP ® Hydraulic Unit Operation 
Check” should be performed to confirm the correct brake 
pipe connection in the following cases.
• ESP®  hydraulic unit / contro l module assembly was 
replaced.
• Brake pipe and/or hose were replaced.
Precautions in Sensor CalibrationS7RS0B4600004
ESP ® control module stores calibration points data of yaw rate / G sensor assembly and master cylinder pressure 
sensor. Steering angle sensor stores calibration point data of itself.
TCS and stability control system use these sets of data.
When the following operation is done, sensor calibration should  be performed since the original calibration points are 
deleted.
[A]: Disconnect [C]: Pull down to disconnect
[B]: Connect [D]: Pull up to connect
21
C D
[A]
[B]
I4RH01450001-01  
Page 579 of 1496
Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program:  4F-5
Yaw rate / G sensor
The yaw rate / G sensor consists of the yaw rate (angular velocity in the vehicle turning direction) sensor and right-left 
G (acceleration in right-left direction) sensor and is mounted to the P/S controller B/K at the lower part of the center 
console. It detects the angular velocity in the vehicle turn ing direction and movement in the right-left direction, and 
then it sends that information to ESP ® control module.
Wheel speed sensor
The vehicle speed is detected by the hall IC type wheel speed  sensor (1) and encoder (4). The wheel speed sensor is 
fixed to the knuckle and includes a hall IC (3) having 2 hall elements (2).
The encoder consisting of a permanent ma gnet which has S/N electrodes turns inside of the wheel hub along with the 
wheel. The wheel speed sensor outputs alternate current.
As the cycle of the alternate current is  in proportion to the revolution speed of the encoder, this AC signal (5) is 
converted into the voltage signal in the ESP ® control module (6) for detection of the wheel speed.
ESP ® Hydraulic Unit / Control Module 
Assembly Description
S7RS0B4601002
ESP ® control module is a component of ESP ® hydraulic 
unit / control module assembly and has the following 
functions.
Self-Diagnosis Function
ESP ® control module monitors each input and output 
signals. When ESP ® control module detects any 
malfunction, some of ABS  warning lamp (1), EBD 
warning lamp (brake warning lamp) (2), ESP ® warning 
lamp (3), SLIP indicator lamp (4), ESP ® OFF lamp (5) 
are turned ON and indicate the abnormality to driver.
• When ignition switch is turned ON, ABS warning  lamp, EBD warning lamp, ESP ® warning lamp, SLIP 
indicator lamp and ESP ® OFF lamp light for 2 
seconds to check its circuit.
• When no abnormality is detected (the system is in  good condition),  ABS warning lamp, EBD warning 
lamp, ESP ® warning lamp, SLIP indicator lamp and 
ESP ® OFF lamp turn OFF after 2 seconds.
• When an abnormality in the system is detected, some  of ABS warning lamp, EBD warning lamp (brake 
warning lamp), ESP ® warning lamp, SLIP indicator 
lamp and/or ESP ® OFF lamp are turned ON and the 
area where that abnormality lies is stored in the 
memory in ESP ® control module. Fail-Safe Mode
When ESP
® control module detects abnormality, the 
system goes into fail-safe mode. And some of functions 
of ABS, TCS, stability control system are shut down. For 
details of fail safe mode, re fer to “Fail-Safe Table”.
S
N
S
N
S
N
N
S
N
S
12V
2
3
1
5
4
6I7RS0B460003-01
3245
1
I6RS0B460001-01  
Page 580 of 1496
Downloaded from www.Manualslib.com manuals search engine 4F-6 Electronic Stability Program: 
Warning Lamp, Indicator Lamp DescriptionS7RS0B4601003
There are five types of warning lamp and indicator lamp in instrument cluster, which are controlled by ESP ® control 
module. They give warning / indication to driver by  changing the modes light ON / blinking / light OFF.
The followings are the condition and operation of warning lamps and indicator lamps.
CAN Communication System DescriptionS7RS0B4601004
Refer to “CAN Communication System  Description in Section 1A” for CAN communication system description. ESP ® 
control module communicates control data with each control module as follows.
ESP ® Control Module Transmission Data
1
245
3
I6RS0B460002-01
1. ESP ® warning lamp 3. ABS warning lamp 5. ESP ® OFF lamp
2. EBD warning lamp (brake warning lamp) 4. SLIP indicator lamp
Warning lamp / Indicator  lamp Condition and operation
ABS warning lamp If ABS has abnor mality, the lamp turns “ON”.
EBD warning lamp  (brake warning 
lamp) • If EBD system has abnormality, the lamp turns “ON”.
• If bake fluid level in reservoir is lower 
than minimum level, the lamp turns “ON”.
• Parking brake switch is ON, the lamp turns “ON”.
ESP ® warning lamp If ESP ® systems has abnormality, the lamp turns “ON”.
SLIP indicator lamp • If stability cont rol system and traction control system is active, the lamp blinks 
at 5 Hz.
• If Steering angle sensor calibration is incompleted, the lamp blinks at 1 Hz.
ESP ® OFF lamp • If ESP ® OFF switch is turned “ON”, the ESP ® OFF lamp light  up. When it is 
“ON”, TCS and stability control system functions are controlled not to work. 
• ESP®  OFF lamp light up to indicate th at brake control of traction control 
function is controlled not to act if brake pad temperature is over 320  °C (608  °F) 
and any of wheel is in wheel spin condition.
Combination
meter
Transmit DATA
ESP® control
moduleECMSteering angle sensor
Torque request signal
Wheel speed signal (front right)
Wheel speed signal (front left)
ESP® status signal
ABS active signal
ABS indication signal
EBD indication signal
Steering angle neutral position
I7RS0B460004-01  
Page 631 of 1496
Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program:  4F-57
3) Remove front brake pipe referring to “Front Brake Hose / Pipe Removal and In stallation in Section 4A”.
4) Remove ESP ® hydraulic unit / control module with 
bracket from vehicle by removing bracket bolts.
5) Remove bolt (4) and pull out ESP ® hydraulic unit / 
control module assembly (1) from bracket (3) using 
flat end rod or the like (2).
Installation 1) Install hydraulic unit / co ntrol module assembly and 
by reversing removal procedure.
Tightening torque
Brake pipe flare nut:  16 N·m (1.6 kgf-m, 11.5 lb-
ft)
ESP ® hydraulic unit / control module assembly 
bolt:  9 N·m (0.9 kgf-m, 6.5 lb-ft)
ESP ® hydraulic unit / control module assembly 
bracket bolt:  25 N·m (2.5 kgf-m, 18.0 lb-ft)
2) Bleed air from brake system referring to “Air  Bleeding of Brake System in Section 4A”.
3) Check each installed part for fluid leakage.
4) Connect SUZUKI Scan Tool.
5) Turn ignition switch to ON position. And SLIP  indicator lamp flush. (Other than replace with new 
one) If other than SLIP indicator lamp light, check 
DTC and repair it.
6) Turn ignition switch to ON position. And ESP®  
warning lamp, SLIP indicator lamp, ESP ® OFF 
lamp, Brake warning lamp  lights and ABS warning 
lamp flush. (Replace new one)
7) Check DTC.
NOTE
If any DTC(s) other than C1075, C1076 or 
C1078 are detected, sensor calibration can 
not be completed. Repair the detected it(s) 
first.
 
8) Perform “Sensor Calibration”.
9) Perform “ESP ® Hydraulic Unit Operation Check”.
10) Turn ignition switch to  OFF position once and then 
ON position. In this state,  make sure that indicator 
light and warning light turns off.
11) Check DTC(s) are not stored in hydraulic unit /  control module.
Front / Rear Wheel Speed Sensor On-Vehicle 
Inspection
S7RS0B4606028
CAUTION! 
Incorrect voltage and/or wrong connection 
cause damage to wheel speed sensor.
 
Output Voltage Inspection
1) Disconnect negative (–) cable from battery.
2) Hoist vehicle a little.
3) Disconnect wheel speed sensor connector.
4) Disconnect wheel speed grommet from vehicle body.
5) Set up measuring devices as shown in figure, the  resistance to 115  Ω and the power supply voltage 
to12 V.
4
1
2 3
I6RS0B460030-02
[A]: Front wheel speed sensor 3. “WHT” wire terminal
[B]: Rear wheel speed sensor 4. “BLK” wire terminal
1. Wheel speed sensor connector 5. Power supply (12 V)
2. Resistance (115  Ω)
V
2
5
4 1
3
43
1
[A]
[B]
I6RS0B460031-02  
Page 641 of 1496
Downloaded from www.Manualslib.com manuals search engine Table of Contents 5- i
5
Section 5
CONTENTS
Transmission / Transaxle
Precautions ................................................. 5-1
Precautions............................................................. 5-1
Precautions on Transmission / Transaxle ............. 5-1
Automatic Transmission/Transaxle ....... 5A-1
Precautions........................................................... 5A-1Precautions in Diagnosing Trouble ..................... 5A-1
Precautions for Disassembly and Reassembly ...................................................... 5A-1
General Description ............................................. 5A-3 A/T Description ................................................... 5A-3
Clutch / Brake / Planetary Gear Function of Automatic Transaxle ......................................... 5A-6
Table of Component Operation ........................... 5A-7
Brake Interlock System Construction .................. 5A-8
A/T Diagnosis General Description ..................... 5A-8
On-Board Diagnostic System Description ........... 5A-8
CAN Communication System Description........... 5A-9
Schematic and Routing Diagram ...................... 5A-10 Transmission Control  Module (TCM) Wiring 
Diagram .......................................................... 5A-10
Automatic Gear Shift Table ............................... 5A-12
Component Locatio n ......................................... 5A-13
Electronic Shift Cont rol System Components 
Location .......................................................... 5A-13
Diagnostic Information and Procedures .......... 5A-15 A/T System Check ............................................ 5A-15
Visual Inspection ............................................... 5A-18
Malfunction Indicator Lamp  (MIL) Check .......... 5A-18
Transmission Warning Ligh t Check .................. 5A-18
DTC Table ......................................................... 5A-19
DTC Check ....................................................... 5A-20
DTC Clearance ................................................. 5A-20
Fail-Safe Table ................ .................................. 5A-21
Scan Tool Data ................................................. 5A-23
A/T Basic Check ............................................... 5A-26
Road Test ......................................................... 5A-27
Manual Road Test ........... .................................. 5A-29
Engine Brake Test ............................................ 5A-30
Stall Test ........................................................... 5A-30
Time Lag Test ................................................... 5A-31
Line Pressure Test .......... .................................. 5A-32
“P” Range Test.................................................. 5A-33
A/T Symptom Diagnosis ..... .............................. 5A-34 No Gear Shift to 4th gear .................................. 5A-41
No Lock-Up Occurs ........................................... 5A-42
Transmission Warning Light Circuit Check – 
Light Does Not Come “ON” at Ignition Switch 
ON ................................................................... 5A-43
Transmission Warning Light Circuit Check –  Light Remains “ON” at Ignition Switch ON ...... 5A-43
DTC P0602: Control Module Programming  Error ................................................................ 5A-44
DTC P0705: Transmission Range Sensor  Circuit Malfunction (PRNDL input) .................. 5A-44
DTC P0707: Transmission Range Sensor  Circuit Low ...................................................... 5A-46
DTC P0712: Transmission Fluid Temperature  Sensor “A” Circuit Low ... ................................. 5A-48
DTC P0713: Transmission Fluid Temperature  Sensor “A” Circuit High .. ................................. 5A-49
DTC P0717: Input / Turbine Speed Sensor “A”  Circuit Malfunction........................................... 5A-51
DTC P0722: Output Speed Sensor Circuit No  Signal .............................................................. 5A-52
DTC P0787: Shift / Timing Solenoid Low .......... 5A-54
DTC P0788: Shift / Timing Solenoid High ......... 5A-56
DTC P0961: Pressure  Control Solenoid “A” 
Control Circuit Range / Performance .............. 5A-58
DTC P0962: Pressure  Control Solenoid “A” 
Control Circuit Low .......................................... 5A-60
DTC P0963: Pressure  Control Solenoid “A” 
Control Circuit High ......................................... 5A-62
DTC P0973 / P0976: Shift Solenoid “A”  Control Circuit Low / Shift Solenoid “B” 
Control Circuit Low .......................................... 5A-64
DTC P0974 / P0977: Shift Solenoid “A” / Shift  Solenoid “B” Control Circuit  High .................... 5A-66
DTC P1702: Internal Co ntrol Module Memory 
Check Sum Error............................................. 5A-68
DTC P1703: Can Invalid Data - TCM ................ 5A-68
DTC P1723: Range Select Switch  Malfunction ...................................................... 5A-69
DTC P1774: CAN Communication Bus Off ....... 5A-71
DTC P1777: TCM Lost Communication with  ECM (Reception Error).................................... 5A-73
DTC P1778: TCM Lost Communication with  BCM (Reception Error).................................... 5A-74  
Page 652 of 1496
Downloaded from www.Manualslib.com manuals search engine 5A-8 Automatic Transmission/Transaxle: 
Brake Interlock System ConstructionS7RS0B5101004
Shift Lock Solenoid Control
This system consists of shift lock solenoid control 
system and interlock cable control system.
The shift lock solenoid cont rol system is so designed 
that the select lever can not be shifted from “P” range 
position unless ignition switch is turned to “ON” or “ACC” 
position and the brake pedal is depressed.
And interlock cable control system is so designed that 
select lever cannot be shifted from “P” range position 
unless ignition switch is turned to “ACC” or “ON” 
position. Also, ignition key cannot be pulled out of key 
slot unless select le ver is in “P” range.
Shift Lock Solenoid Manual Release
When push down shift lock solenoid valve release button 
(1), select lever can be moved from “P” range position to 
another range even without depressing the brake pedal. 
(To shift select lever from “P” range to any other position, 
turn ignition switch to ACC or ON position.)
A/T Diagnosis General DescriptionS7RS0B5101005
This vehicle is equipped with an electronic transaxle 
control system, which controls the automatic shift up and 
shift down timing, TCC operation, etc. suitably to vehicle 
driving conditions.
TCM has an On-Board Diagnosis System which detects 
a malfunction in this system.
When diagnosing a trouble in transaxle including this 
system, be sure to have full understanding of the outline 
of “On-Board Diagnostic System Description” and each 
item in “Precautions in Diagnosing Trouble” and execute 
diagnosis according to “A/T System Check” to obtain 
correct result smoothly.
On-Board Diagnostic System DescriptionS7RS0B5101006
For automatic transaxle co ntrol system, TCM has the 
following functions. Refer to “Inspection of TCM and Its 
Circuits”.
• When ignition switch is turned ON with no malfunction  in A/T control system is detected, transmission 
warning light (1) lights for about 2 seconds after 
ignition switch is turned ON and then goes OFF for 
bulb check.
• When TCM detects a malfunction in A/T control  system, it indicates  transmission warning light (1) and 
stores malfunction DTC in its memory.
• It is possible to communicate with TCM through data  link connector (DLC) (3) by using SUZUKI scan tool 
(2). Diagnostic information can be checked and 
erased by using SUZUKI scan tool.
• For information about the following items, refer to “On- Board Diagnostic System De scription in Section 1A”
– Warm up cycle
– Driving cycle
– 2 Driving cycle detection logic
– Pending DTC
– Freeze frame data
1
I6RS0C510001-01
3
2
1
I6RS0C510002-01  
Page 653 of 1496
Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle:  5A-9
CAN Communication System DescriptionS7RS0B5101007
Refer to “CAN Communication System Description in Section 1A” for CAN communication System description. TCM 
communicates control data with each control module as follows.
TCM Transmission Data
TCM Reception Data
DATA
TCM
Transmit
Transmission oil temperarure
signal
Torque request signal
Vehicle speed pulse signal
Transmission warning light
signal
Transmission actual gear position
signal
A/T select lever position signal
ECMCombination 
meterBCM
I7RS0B510001-03
Engine torque signal
Engine speed signal 
Throttle position signal
A/C compressor clutch signal 
Engine coolant temperature signal
Brake pedal switch signal
Reception data from ECM
Accelerator pedal position signalI7RS0B510002-03