Mitsubishi Grandis. Manual — part 949
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-121
STEP 2. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set.
CAUTION
Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF)
position.
(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF)
position.
Q: Is code No.U1073 set?
YES :
Replace the steering wheel sensor. Then go
to Step 3.
NO :
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
STEP 3. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set.
CAUTION
Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF)
position.
(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF)
position.
Q: Is code No.U1073 set?
YES :
Go to Step 1.
NO :
The procedure is complete.
AC302297
AC310120
AB
MB991827
16-pin
MB991910
MB991824
AC302297
AC310120
AB
MB991827
16-pin
MB991910
MB991824
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-122
SYMPTOM CHART
M1355006900026
Symptom
Inspection
procedure No.
Reference page
Communication with
MUT-III is not
possible
Communication with all systems is
impossible
-
Group 54D,
Diagnosis
Communication with the TCL/ASC-ECU
only is impossible
1
Communication with the steering wheel
sensor only is impossible
2
TCL/ASC-ECU power supply circuit system
3
Steering wheel sensor power supply circuit system
4
G and yaw late sensor power supply circuit system
5
When the ignition switch is turned to the "ON" position (engine
stopped), the TCL OFF indicator lamp dose not illuminate.
6
When the ignition switch is turned to the "ON" position (engine
stopped), the TCL/ASC indicator lamp dose not illuminate.
7
The TCL OFF indicator lamp remains illuminated after the engine
is started.
8
The TCL/ASC indicator lamp remains illuminated after the engine
is started.
9
When the TCL switch is push on, TCL system does not be
cancelled.
10
TCL/ASC system dose not operate.
11
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-123
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Communication between Scan Tool and the TCL/ASC-ECU is not
possible.
<LH drive vehicles>
IGNITION
SWITCH (IG1)
DIAGNOSIS
CONNECTOR
FRONT SIDE
POWER
SUPPLY
TCL/ASC-ECU
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
Data Link Connector Circuit
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-124
<RH drive vehicles>
TECHNICAL DESCRIPTION (COMMENT)
If the MUT-III can not communicate with the
TCL/ASC system, the CAN bus lines may be
defective. If the TCL/ASC system does not work, the
TCL/ASC-ECU or its power supply circuit may be
defective.
PROBABLE CAUSES
• Damaged wiring harness or connector
• Malfunction of the hydraulic unit (Integrated with
TCL/ASC-ECU)
IGNITION
SWITCH (IG1)
DIAGNOSIS
CONNECTOR
POWER
SUPPLY
TCL/ASC-ECU
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
FRONT SIDE
Data Link Connector Circuit
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