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Home >> Mitsubishi >> 2013 >> Lancer Evolution GSR >> Repair and Diagnosis (Single Page) >> Transmission >> Manual Trans >> Manual Transaxle On-Vehicle Service - Lancer Evolution >> Diagnosis <S-AWC (Super All Wheel Control)> >> Symptom Procedures >> INSPECTION PROCEDURE 2: Mode Does Not Change Even When The AWC Switch Is Pressed <Vehicles Without Steering Wheel Audio Remote Control Switch> >> Diagnostic Procedure
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Diagnostic Procedure

  1. STEP 1. Scan tool CAN bus diagnostics 

    Using scan tool MB991958, diagnose the CAN bus lines.

    Q: Is the check result normal? 

    1. YES:  Go to Step  3.
    2. NO:  Repair the CAN bus lines. (Refer to TROUBLESHOOTING .) After repairing the CAN bus line, go to Step 2.
  2. STEP 2. Retest the system. 

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
    2. NO:  Go to Step 3.
  3. STEP 3. Scan tool service data 

    Item No. 90, 91: AWC switch (Refer to SERVICE DATA REFERENCE TABLE  .)

    Q: Is the check result normal? 

    1. YES:  Go to Step  11.
    2. NO:  Go to Step 4.
  4. STEP 4. AWC switch single unit check 

    Check the AWC switch. (Refer to AWC SWITCH CHECK  .)

    Q: Is the check result normal? 

    1. YES:  Go to Step 5.
    2. NO:  Replace the AWC switch. (Refer to AWC-ECU  .) Then go to Step  13.
  5. STEP 5. Measure the voltage at C-214 AWC switch connector. 
    1. Disconnect the connector, and measure the voltage between terminal No. 2 and ground at the harness side.
    2. Turn the ignition switch to the "ON" position.

      OK: Battery positive voltage 

    Q: Is the check result normal? 

    1. YES:  Go to Step  9.
    2. NO:  Go to Step 6.
  6. STEP 6. Voltage measurement at C-46 AWC-ECU connector 
    1. With C-46 AWC-ECU connector connected, measure the voltage between terminal No. 11 and ground at the harness side.
    2. Turn the ignition switch to the "ON" position.

      OK: battery voltage 

      Q: Is the check result normal? 

    1. YES:  Go to Step 7.
    2. NO:  Go to Step  12.
  7. STEP 7. AWC-ECU connector, intermediate connector, clock spring connector, AWC switch connector check: C-46, C-31, C-41, C-202, C-205, C-214 

    Q: Is the check result normal? 

    1. YES:  Go to Step 8.
    2. NO:  Repair the defective connector. Then go to Step  13.
  8. STEP 8. Wiring harness check between C-46 AWC-ECU connector terminal No. 11 and C-214 AWC switch connector terminal No. 2 

    Check the wiring harness for open or short circuit (short to ground).

    Q: Is the check result normal? 

    1. YES:  Go to Step  12.
    2. NO:  Repair the wiring harness. Then go to Step  13.
  9. STEP 9. AWC-ECU connector, intermediate connector, clock spring connector, AWC switch connector check: C-46, C-31, C-41, C-202, C-205, C-214 

    Q: Is the check result normal? 

    1. YES:  Go to Step 10.
    2. NO:  Repair the defective connector. Then go to Step  13.
  10. STEP 10. Wiring harness check between C-46 AWC-ECU connector terminal No. 19 and C-214 AWC switch connector terminal No. 4 

    Check the wiring harness for open circuit.

    Q: Is the check result normal? 

    1. YES:  Go to Step 11.
    2. NO:  Repair the wiring harness. Then go to Step  13.
  11. STEP 11. Scan tool service data 

    Combination meter item No. F13, F14, F15: Mode display (Refer to SERVICE DATA .)

    Q: Is the check result normal? 

    1. YES:  Go to Step 12.
    2. NO:  Replace the combination meter. (Refer to COMBINATION METER .) Then go to Step 12.
  12. STEP 12. Retest the system. 

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
    2. NO:  Replace the AWC-ECU. (Refer to AWC-ECU  .) Then go to Step 13.
  13. STEP 13. Retest the system. 

    Q: Is the check result normal? 

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