Mitsubishi Grandis. Manual — part 952
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-133
•
Joint connector C-01 <LH drive vehicles> or C-33
<RH drive vehicles> and intermediate connector
C-124
•
Ignition switch connector C-307
Check the connectors, for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is the check result normal?
YES :
An open or short circuit may be present in
the power supply line to the TCL/ASC-ECU.
Repair the wiring harness between
TCL/ASC-ECU connector A-04 terminal 4
and ignition switch connector C-307
terminal 2. Go to Step 8.
NO :
Repair or replace the damaged
component(s). Then go to Step 8.
AC211226
33
22
11
28
17
16
15
14
13
12
25
2324
2627
3
1 2
4 5
21
20
19
18
2930
32
31
7
6
8
10
9
AC
CONNECTOR: C-04
C-04
AC312624
33
22
11
28
17
16
15
14
13
12
25
2324
2627
3
1 2
4 5
21
20
19
18
2930
32
31
7
6
8
10
9
AC
Connectors: C-01, C-124
<L.H.drive vehicles>
C-01
C-01
C-124
C-124
AC312625AC
Connectors: C-33, C-124
<R.H.drive vehicles>
C-33
C-33
C-124
C-124
AC313147AB
Connector: C-307
<L.H.drive vehicles>
C-307
2
5
4
1
6
3
AC313148
AB
Connector: C-307
<R.H.drive vehicles>
C-307
2
5
4
1
6
3
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-134
STEP 3. Resistance measurement at
TCL/ASC-ECU connector A-04.
(1) Disconnect the connector A-04, and connect
special tool ABS Check Harness (MB991997) to
the wiring harness-side connector.
NOTE: Do not connect special tool ABS Check
Harness (MB991997) to the TCL/ASC-ECU.
(2) Measure the resistance between terminal 16 and
earth.
OK: 2 ohm or less
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
STEP 4. Check TCL/ASC-ECU connector A-04 for
loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is the check result normal?
YES :
An open circuit may be present in the earth
circuit. Repair the wiring harness between
TCL/ASC-ECU connector A-04 terminals 16
and the body earth. Then go to Step 8.
NO :
Repair or replace the damaged
component(s). Then go to Step 8.
STEP 5. Check the battery.
Check the battery (Refer to GROUP 54A, Battery
test
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Charge or replace the battery. Then go to
Step 8.
STEP 6. Check the charging system.
Check the charging system (Refer to GROUP 16,
Charging system
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair or replace the charging system
component(s).Then go to Step 8.
AC312620AF
Oil reservoir
Connector: A-04
TCL/ASC-ECU
MB991997
Check connector
A-04 Harness connector
A-04
Hydraulic unit
(with built-in TCL/ASC-ECU)
AC312621
Oil reservoir
Connector: A-04
AB
A-04
Hydraulic unit
(with built-in TCL/ASC-ECU)
A-04 Harness connector
(harness side)
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-135
STEP 7. Retest the system.
Q: Can the TCL/ASC-ECU communicate with the
MUT-III?
YES :
It can be assumed that this malfunction is
intermittent. Refer to GROUP 00, How to
Use Troubleshooting/Inspection Service
Points
− How to Cope with Intermittent
NO :
Replace the TCL/ASC-ECU. Then go to
Step 8.
STEP 8. Retest the system.
Q: Can the TCL/ASC-ECU communicate with the
MUT-III?
YES :
The procedure is complete.
NO :
Go to Step 1.
INSPECTION PROCEDURE 4: Steering wheel sensor power supply supply system
<LH drive vehicles>
IGNITION
SWITCH (IG1)
STEERING
WHEEL
SENSOR
Wire colour code
B : Black
LG : Light green
G : Green
L: Blue
W : White
Y: Yellow
SB : Sky blue
BR : Brown
O : Orange
GR : Gray
R : Red
P : Pink
V : Violet
Steering Wheel Sensor Power Supply Circuit
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-136
<RH drive vehicles>
OPERATION
• The steering wheel sensor is energized by the
ignition switch (IG1) through multi-purpose fuse 2
and the steering wheel sensor terminal 2.
• If the power supply to the steering wheel sensor
has failed, MUT-III will not be able to
communicate with it.
PROBABLE CAUSES
• Damaged wiring harness or connector
• Defective battery
• Charging system failed
• Malfunction of the steering wheel sensor
IGNITION
SWITCH (IG1)
STEERING
WHEEL
SENSOR
Wire colour code
B : Black
LG : Light green
G : Green
L: Blue
W : White
Y: Yellow
SB : Sky blue
BR : Brown
O : Orange
GR : Gray
R : Red
P : Pink
V : Violet
Steering Wheel Sensor Power Supply Circuit
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