Mitsubishi Grandis. Manual — part 954
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-141
YES :
Go to Step 7.
NO :
Repair or replace the charging system
component(s).Then go to Step 8.
STEP 7. Retest the system.
Q: Can the steering wheel sensor 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
Malfunction
.
NO :
Replace the steering wheel sensor. Then go
to Step 8.
STEP 8. Retest the system.
Q: Can the steering wheel sensor communicate with
the MUT-III?
YES :
The procedure is complete.
NO :
Go to Step 1.
INSPECTION PROCEDURE 5: G and yaw rate sensor power supply supply system
CIRCUIT OPERATION
• G and yaw rate sensor terminal 1 is energized
from the TCL/ASC-ECU by the G and yaw rate
sensor.
• If the power supply to the G and yaw rate sensor
has failed, TCL/ASC-ECU related diagnosis code
No.C1864 is set.
PROBABLE CAUSES
• Damaged wiring harness or connector
• Malfunction of the G and yaw rate sensor
• Malfunction of the TCL/ASC-ECU.
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
G AND YAW
LATE SENSOR
G and Yaw Late Sensor Circuit
TROUBLESHOOTING
TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM
35C-142
DIAGNOSIS
STEP 1. MUT-III CAN bus diagnostics
CAUTION
Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
(1) Connect MUT-III to the 16-pin diagnosis
connector.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF)
position.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the CAN bus line (Refer to GROUP
54D, CAN bus line Diagnostic flow
). Then go to Step 2.
STEP 2. MUT-III diagnosis code
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.C1864 set?
YES :
Go to Step 3.
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-143
STEP 3. MUT-III data list
CAUTION
Before connecting or disconnecting the MUT-III,
turn the ignition switch to the "LOCK" (OFF)
position.
(1) Connect the MUT-III to the 16-pin diagnosis
connector.
(2) Turn the ignition switch to the "ON" position.
(3) Use MUT-III to read the following data list.
Item 31: Lateral G sensor
• Acceleration should measure nearly 0 G
when the vehicle is stopped at a level surface.
• Acceleration should change within the range
of -1.7
− 1.7 G during running.
Item 33: Yaw rate sensor
• Angular velocity should measure nearly 0
deg/s (-3
− 3 deg/s) when the vehicle is
stopped at a level surface.
• Angular velocity should change within the
range of -100
−100 deg/s during running.
Q: Is the check result normal?
YES :
Then go to step 8.
NO :
Go to Step 4.
STEP 4. Voltage measurement at G and yaw rate
sensor connector C-117.
(1) Disconnect the G and yaw rate sensor connector
C-117, and measure at the harness side
connector.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 1 and
AC302297
AC310120
AB
MB991827
16-pin
MB991910
MB991824
AC313186
AB
Connector: C-117
<L.H.drive vehicles>
C-117
C-117 Harness connector
(harness side)
AC313188AB
Connector: C-117
<R.H.drive vehicles>
C-117
C-117 Harness connector
(harness side)
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