Mitsubishi Outlander XL. Manual - part 684

STEP 10. M.U.T.-III data list
Check the following service data.

｠

Item 08: Lateral G-sensor

｠

Item 09: G sensor

｠

Item 12: Yaw rate sensor

Q:Is the check result normal?

YES:

 Go to Step 11.

NO:

 Replace the G and yaw rate sensor, and then go to

Step 11.

STEP 11. Check whether the diagnostic trouble code is
reset.

Q:Are DTCs C2114 and C2115 set?

YES:

 Replace the ASC-ECU.

NO:

 The procedure is complete.

DTC C123A: Abnormality in sensor calibration

M13506100066USA0000010000

If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagnosis,
diagnose the CAN bus lines. (Refer to GROUP 54D, Trouble
code diagnosis P.54D-17).

CIRCUIT OPERATION
ASC-ECU  stores  the  calibrated  value  of  the  G  and  yaw  rate
sensor, steering wheel sensor, and brake fluid pressure sensor.

DTC SET CONDITIONS
This diagnostic trouble code is set when the calibrated value for
each sensor stored in ASC-ECU is not within the predetermined
range.

｠

Abnormality in neutral position of the G and yaw rate sensor

｠

Abnormality in neutral position of the steering wheel sensor

PROBABLE CAUSES

｠

ASC-ECU malfunction

｠

External noise interference

｠

Accidental  shutdown  of  power  supply  during  the  storing
operation of calibrated value

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-143

DIAGNOSIS

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 3.

NO:

 Repair the CAN bus lines. (Refer to GROUP 54D - CAN

Bus Diagnostics table P.54D-17.) On completion, go to
Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines

Q:Is DTC C123A set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. G and yaw rate sensor calibration
Perform  calibration  of  G  and  yaw  rate  sensor.  (Refer  to  P.
35C-191.)

Q:Has the calibration succeeded?

YES:

 Go to Step 4.

NO:

 Replace the ASC-ECU.

STEP 4. Steering wheel sensor calibration
Perform  calibration  of  steering  wheel  sensor.  (Refer  to  P.
35C-192.)

Q:Has the calibration succeeded?

YES:

 Go to Step 5.

NO:

 Replace the ASC-ECU.

STEP 5. Check whether the diagnostic trouble code is reset.

Q:Is DTC C123A set?

YES:

 Replace the ASC-ECU.

NO:

 The procedure is complete.

DTC C1219: Abnormality in steering wheel sensor signal

M13506100067USA0000010000

If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagnosis,
diagnose the CAN bus lines. (Refer to GROUP 54D, Trouble
code diagnosis P.54D-17).

CIRCUIT OPERATION
Steering wheel sensor outputs the signal to ASC-ECU via the
CAN bus lines.

DTC SET CONDITIONS
This diagnostic trouble code is set if any malfunction below is
found:

35C-144

ACTIVE SKID CONTROL SYSTEM (ASC)

DIAGNOSIS

｠

The tolerance of the neutral position of steering wheel sensor
exceeds the specified range.

｠

Abnormality in steering wheel sensor output value

｠

When abnormality is detected by comparing the value output
from the steering wheel sensor with the one from the wheel
speed sensor and the G and yaw rate sensor.

PROBABLE CAUSES

｠

Improper installation of steering wheel sensor

｠

Wheel alignment not performed

｠

Steering wheel sensor malfunction

｠

Different steering wheel

｠

G and yaw rate sensor malfunction

｠

Malfunction of wheel speed sensor

｠

ASC-ECU malfunction

｠

External noise interference

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q:Is the check result normal?

YES:

 Go to Step 3.

NO:

 Repair the CAN bus lines. (Refer to GROUP 54D - CAN

Bus Diagnostics table P.54D-17.) On completion, go to
Step 2.

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines

Q:Is DTC C1219 set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. M.U.T.-III diagnostic trouble code
Check  that  the  wheel  speed  sensor-related,  G  and  yaw  rate
sensor-related,  or  steering  wheel  sensor-related  diagnostic
trouble code is set.

Q:Is any DTC set?

YES:

 Troubleshoot the relevant diagnostic trouble code,

and then go to Step 4.

NO:

 Go to Step 4.

STEP 4. Check how steering wheel sensor is installed.
Check  that  the  steering  wheel  sensor  is  installed  correctly.
(Refer to P.35C-198.)

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-145

DIAGNOSIS

Q:Is the check result normal?

YES:

 Go to Step 5.

NO:

 Install the steering wheel sensor correctly, and then

go to Step 5.

STEP 5. M.U.T.-III data list
Check the following service data.

｠

Item 11: Steering angle sensor

Q:Is the check result normal?

YES:

 Go to Step 6.

NO:

 Replace the steering wheel sensor.

STEP 6. Wheel alignment check

Q:Is the check result normal?

YES:

 Go to Step 7.

NO:

 Adjust the wheel alignment, and then go to Step 7.

STEP 7. Check whether the diagnostic trouble code is reset.

Q:Is DTC C1219 set?

YES:

 Replace the steering wheel sensor, and then go to

Step 8.

NO:

 The procedure is complete.

STEP 8. Check whether the diagnostic trouble code is reset.

Q:Is DTC C1219 set?

YES:

 Replace ASC-ECU.

NO:

 The procedure is complete.

DTC C121A: Abnormality in steering wheel sensor initialization

M13506100068USA0000010000

If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagnosis,
diagnose the CAN bus lines. (Refer to GROUP 54D, Trouble
code diagnosis P.54D-17).

CIRCUIT OPERATION
Steering wheel sensor stores the neutral position learned by the
scan tool. When the neutral position has not been stored in the
steering wheel sensor yet, the steering wheel sensor outputs the
signal indicating that it does not have neutral position.

DTC SET CONDITIONS
This diagnostic trouble code is set when ASC-ECU detects that
the steering wheel sensor has not learned the neutral position
yet.

PROBABLE CAUSES

｠

Steering wheel sensor malfunction

35C-146

ACTIVE SKID CONTROL SYSTEM (ASC)

DIAGNOSIS