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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Continuously Variable Transaxle (CVT) On-Vehicle Service - With Diagnostics) >> Diagnosis < S-AWC > >> Symptom Procedures >> INSPECTION PROCEDURE 5: Malfunction of Power Supply Circuit System >> Diagnostic Procedure

Diagnostic Procedure

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. Check of the fuse No.13 and No.15. 

    Visually check for open circuit in the fuse No.13, No.15.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 6.
    2. NO:  Go to Step 2.
  2. STEP 2. Check the wiring harness between electronic control coupling solenoid (front) connector and AWC-ECU connector terminal FSL+. 

    Check the power supply line for short circuit.

    Q: Is the check result normal? 

    1. YES:  Go to Step 3.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  3. STEP 3. Check the wiring harness between electronic control coupling solenoid (front) connector and AWC-ECU connector terminal FSL-. 

    Check the ground line for short to the power supply.

    Q: Is the check result normal? 

    1. YES:  Go to Step 4.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  4. STEP 4. Check the wiring harness between electronic control coupling solenoid (center) connector and AWC-ECU connector terminal SOL+. 

    Check the power supply line for short circuit.

    Q: Is the check result normal? 

    1. YES:  Go to Step 5.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  5. STEP 5. Check the wiring harness between electronic control coupling solenoid (center) connector and AWC-ECU connector terminal SOL-. 

    Check the ground line for short to the power supply.

    Q: Is the check result normal? 

    1. YES:  Go to Step 6.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  6. STEP 6. Check of the electronic control coupling solenoid (front) 

    Refer to ELECTRONIC CONTROL COUPLING SOLENOID (FRONT) CHECK < VEHICLES WITH S-AWC >  .

    Q: Is the check result normal? 

    1. YES:  Go to Step 7.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  7. STEP 7. Check of the electronic control coupling solenoid (center) 

    Refer to ON-VEHICLE SERVICE .

    Q: Is the check result normal? 

    1. YES:  Go to Step 8.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  8. STEP 8. Check the wiring harness between ETACS-ECU connector and AWC-ECU connector terminal 4WDF 

    Check the power supply for short circuit.

    Q: Is the check result normal? 

    1. YES:  Go to Step 9.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.13. Then go to  Step 22.
  9. STEP 9. Check the wiring harness between ETACS-ECU connector and AWC-ECU connector terminal IG16 

    Check the power supply for short circuit.

    Q: Is the check result normal? 

    1. YES:  Replace the fuse Nos.13 and 15. Then go to Step 10.
    2. NO:  Repair the wiring harness wire and/or connector(s), and then replace fuse No.15. Then go to  Step 22.
  10. STEP 10. Voltage measurement at ETACS-ECU connector 

    Disconnect the connector, and measure the voltage between terminal +B1 and body ground at the wiring harness side.

    OK: Battery positive voltage 

    Q: Is the check result normal? 

    1. YES:  Go to  Step 12.
    2. NO:  Go to Step 11.
  11. STEP 11. Check the wiring harness between ETACS-ECU connector terminal +B1 and fusible link No.2 

    Check the power supply line for open circuit or short circuit.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 22.
    2. NO:  Repair the defective connector or the wiring harness. Then go to  Step 22.
  12. STEP 12. Voltage measurement at the ETACS-ECU connector 
    1. Disconnect the connector, and measure the voltage between terminal IG1 and body ground at the wiring 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 14.
    2. NO:  Go to Step 13.
  13. STEP 13. Check the wiring harness between ETACS-ECU connector terminal IG1 and J/C(2). 

    Check the power supply line for open circuit or short circuit.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 22.
    2. NO:  Repair the defective connector or the wiring harness. Then go to  Step 22.
  14. STEP 14. Voltage measurement at the AWC-ECU connector 

    Disconnect the connector, and measure the voltage between terminal 4WDF and body ground at the wiring harness side.

    OK: Battery positive voltage 

    Q: Is the check result normal? 

    1. YES:  Go to  Step 16.
    2. NO:  Go to Step 15.
  15. STEP 15. Check the wiring harness between ETACS-ECU connector and AWC-ECU connector terminal 4WDF. 

    Check the power supply line for open circuit.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 22.
    2. NO:  Repair the defective connector or the wiring harness. Then go to  Step 22.
  16. STEP 16. Voltage measurement at the AWC-ECU connector 
    1. Disconnect the connector, and measure the voltage between terminal IG16 and body ground at the wiring 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 18.
    2. NO:  Go to Step 17.
  17. STEP 17. Check the wiring harness between ETACS-ECU connector terminal IG16 and AWC-ECU connector terminal IG16. 

    Check the power supply line for open circuit.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 22.
    2. NO:  Repair the defective connector or the wiring harness. Then go to  Step 22.
  18. STEP 18. Measure the resistance at the AWC-ECU connector. 
    1. Disconnect the connector, and measure at the wiring harness side.
    2. Resistance between AWC-ECU connector terminal GND1 and body ground.

      OK: Continuity exists (2 Ω or less) 

    Q: Is the check result normal? 

    1. YES:  Go to  Step 20.
    2. NO:  Go to Step 19.
  19. STEP 19. Check the wiring harness between AWC-ECU connector terminal GND1 and body ground. 

    Check the ground line for open circuit.

    Q: Is the check result normal? 

    1. YES:  Go to  Step 22.
    2. NO:  Repair the defective connector or the wiring harness. Then go to  Step 22.
  20. STEP 20. Retest the system. 

    Q: Does the malfunction occur again? 

    1. YES:  Replace the ETACS-ECU (Refer to ETACS-ECU ). Then go to Step 21.
    2. NO:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
  21. STEP 21. Retest the system. 

    Q: Does the malfunction occur again? 

    1. YES:  Replace the AWC-ECU (Refer to AWC-ECU < Vehicles with S-AWC >  ). Then go to Step 22.
    2. NO:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
  22. STEP 22. Retest the system. 

    Q: Does the malfunction occur again? 

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