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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Electronically Controlled AWD - With Diagnostics) >> Troubleshooting >> Diagnostic Trouble Code Procedures >> Code No. C123C: Sensor Cluster Malfunction >> Diagnosis

Code No. C123C: Sensor Cluster Malfunction: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics. 

    Use scan tool (M.U.T.-III) to perform the CAN bus diagnosis.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 3.
    2. NO:  Repair the CAN bus lines (Refer to DIAGNOSIS ). After repairing the CAN bus line, go to Step 2.
  2. STEP 2. Check whether the DTC is stored again. 

    Q: Is DTC No. C123C stored? 

    1. YES:  Go to Step 3.
    2. NO:  This diagnosis is complete.
  3. STEP 3. Scan tool (M.U.T.-III) DTC. 

    Check the ASC DTC. (Refer to TROUBLESHOOTING ).

    Q: Is the check result normal? 

    1. YES:  Perform the relevant troubleshooting.
    2. NO:  Go to Step 4.
  4. STEP 4. Scan tool (M.U.T.-III) other system DTC. 

    Check if the wheel speed sensor-related, or steering wheel sensor-related DTC is stored.

    Q: Is the DTC stored? 

    1. YES:  Perform the relevant troubleshooting.
    2. NO:  Go to Step 5.
  5. STEP 5. Check of hydraulic unit (integrated with G and yaw rate sensor) installation status. 

    Check that the hydraulic unit (integrated with G and yaw rate sensor) is installed correctly (Refer to HYDRAULIC UNIT (INTEGRATED WITH G AND YAW RATE SENSOR) ).

    Q: Is the check result normal? 

    1. YES:  Go to Step 6.
    2. NO:  Reinstall the hydraulic unit (integrated with G and yaw rate sensor) correctly. Then go to Step 6.
  6. STEP 6. Scan tool (M.U.T.-III) data list. 

    Check the following data list (Refer to DATA LIST REFERENCE TABLE  ).

    • Item No.22: Yaw rate sensor
    • Item No.23: Lateral G sensor

    Q: Is the check result normal? 

    1. YES:  Go to Step 7.
    2. NO:  Replace the hydraulic unit (integrated with G and yaw rate sensor) (Refer to HYDRAULIC UNIT (INTEGRATED WITH G AND YAW RATE SENSOR) ). Then go to  Step 11.
  7. STEP 7. Check of steering wheel sensor installation status. 

    Check that the steering wheel sensor is installed correctly (Refer to STEERING WHEEL SENSOR ).

    Q: Is the check result normal? 

    1. YES:  Go to Step 8.
    2. NO:  Install the steering wheel sensor correctly. Then go to Step 8.
  8. STEP 8. Wheel alignment check. 

    Q: Is the check result normal? 

    1. YES:  After checking the wheel alignment, calibrate the steering wheel sensor (Refer to STEERING WHEEL SENSOR CALIBRATION ), and reset the steering wheel sensor correction amount stored in the AWD-ECU (Refer to AWD-ECU  ). Then go to Step 9.
    2. NO:  After adjusting the wheel alignment, calibrate the steering wheel sensor (Refer to STEERING WHEEL SENSOR CALIBRATION ), and reset the steering wheel sensor correction amount stored in the AWD-ECU (Refer to AWD-ECU  ). Then go to Step 9.
  9. STEP 9. Scan tool (M.U.T.-III) data list. 

    Check the following data list (Refer to DATA LIST REFERENCE TABLE  ).

    • Item No.8: Steering angle sensor

    Q: Is the check result normal? 

    1. YES:  Go to Step 10.
    2. NO:  Replace the steering wheel sensor (Refer to STEERING WHEEL SENSOR ). Then go to Step 10.
  10. STEP 10. Check whether the DTC is stored again. 

    Q: Is DTC No. C123C stored? 

    1. YES:  Replace the AWD-ECU (Refer to AWD-ECU  ). Then go to Step 11.
    2. NO:  Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
  11. STEP 11. Check whether the DTC is stored again. 

    Q: Is DTC No. C123C stored? 

    1. YES:  Return to  Step 1.
    2. NO:  This diagnosis is complete.
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