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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> Body & Frame >> Windows >> Door & Window - With Diagnostics - Lancer >> Symptom Procedures < Power Window > >> INSPECTION PROCEDURE 3: Relevant Power Window(s) does not work by means of the Front and Rear Passenger's Power Window Sub Switches >> Diagnostic Procedure

Diagnostic Procedure

  1. STEP 1. Check the power window lock switch. 

    Q: Is the power window lock switch in the "UNLOCK" position? 

    1. YES:  Go to Step 2.
    2. NO:  Operate the power window lock switch to the "UNLOCK" position. When the power window sub switch is operated, the power windows should raise and lower normally.
  2. STEP 2. Check power window main switch connector E-28 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is power window main switch connector E-28 in good condition? 

    1. YES:  Go to Step 3.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the power window sub switch is operated, the power windows should raise and lower normally.
  3. STEP 3. Determine a trouble spot. 

    Q: Which power window does not work? 

    Front passenger's door:  Go to Step 4.

    Rear left door:  Go to  Step 13.

    Rear right door:  Go to  Step 22.

  4. STEP 4. Check front power window sub switch connector E-09 and front power window motor (RH) connector E-10 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Are front power window sub switch connector E-09 and front power window motor (RH) connector E-10 in good condition? 

    1. YES:  Go to Step 5.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.
  5. STEP 5. Check the front power window sub switch for continuity. 
    1. Remove the front power window sub switch. Refer to DOOR GLASS AND REGULATOR  .
    2. Check continuity when the front power window sub switch is operated to "UP" or "DOWN" position.
      Switch position Tester connection Specified condition
      UP 4 - 5, 6 - 7 Continuity exists (2 Ω or less)
      OFF 4 - 5, 7 - 8 Continuity exists (2 Ω or less)
      DOWN 4 - 6, 7 - 8 Continuity exists (2 Ω or less)
      Fig 1: Identifying Power Window Sub Switch Connector Terminals
      G05384091

    Q: Is the front power window sub switch normal? 

    1. YES:  Go to Step 6.
    2. NO:  Replace the front power window sub switch. When the front power window sub switch is operated, the front power window should raise and lower normally.
  6. STEP 6. Check the front power window motor (RH). 
    1. Remove the front power regulator assembly (RH). Refer to DOOR GLASS AND REGULATOR  .
    2. Connect a battery to the motor terminal, and check that the motor runs freely.
      Battery connection Slider position
      • Connect terminal 1 to the negative battery terminal
      • Connect terminal 4 to the positive battery terminal
      		 UP
      • Connect terminal 4 to the negative battery terminal
      • Connect terminal 1 to the positive battery terminal
      		 DOWN
      Fig 2: Identifying Front Power Window Motor Connector Terminals (RH)
      G05384085

    Q: Is the front power window motor (RH) normal? 

    1. YES:  Go to Step 7.
    2. NO:  Replace the front power regulator assembly (RH). When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.
  7. STEP 7. Check the battery power supply circuit to the front power window sub switch. Measure the voltage at front power window sub switch connector E-09. 
    1. Disconnect front power window sub switch connector E-09 and measure the voltage available at the wiring harness side of the connector.
    2. Measure the voltage between terminal 6 and ground.
      • The voltage should measure approximately 12 V (battery positive voltage).

    Q: Is the measured voltage approximately 12 V (battery positive voltage)? 

    1. YES:  Go to  Step 10.
    2. NO:  Go to Step 8.
      Fig 3: Measuring Voltage Between Terminal 6 And Ground
      G05384093
  8. STEP 8. Check ETACS-ECU connector C-315 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is ETACS-ECU connector C-315 in good condition? 

    1. YES:  Go to Step 9.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.
  9. STEP 9. Check the wiring harness between ETACS-ECU connector C-315 (terminal 8) and front power window sub switch connector E-09 (terminal 6). 
    • Check the power supply line for open circuit and short circuit.
      NOTE: Also check intermediate connector C-114. If intermediate connector C-114 is damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between ETACS-ECU connector C-315 (terminal 8) and front power window sub switch connector E-09 (terminal 6) in good condition? 

    1. YES:  No action is necessary and testing is complete.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the front power window sub switch is operated, the front power window (RH) should raise and lower normally.
  10. STEP 10. Check the ground circuit to the front power window sub switch. Measure the resistance at front power window sub switch connector E-09. 
    1. Disconnect front power window sub switch connector E-28 and measure the resistance available at the wiring harness side of the connector.
    2. Measure the resistance value between terminal 5 and ground, and also between terminal 8 and ground.
      • The resistance should be 2 Ω or less.

    Q: Is the measured resistance 2 Ω or less? 

    1. YES:  Go to  Step 12.
    2. NO:  Go to Step 11.
      Fig 4: Measuring Resistance Value Between Terminal 5 And Ground, And Terminal 8 And Ground
      G09627580
  11. STEP 11. Check the wiring harness between power window main switch connector E-28 (terminals 1 and 3) and front power window sub switch connector E-09 (terminals 8 and 5). 
    • Check the signal line for open circuit and short circuit.
      NOTE: Also check intermediate connectors C-114 and C-125. If intermediate connector C-114 or C-125 is damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between power window main switch connector E-28 (terminals 1 and 3) and front power window sub switch connector E-09 (terminals 8 and 5) in good condition? 

    1. YES:  Replace the power window main switch. When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.
  12. STEP 12. Check the wiring harness between front power window sub switch connector E-09 (terminals 4 and 7) and front power window motor (RH) connector E-10 (terminals 1 and 4). 
    • Check the signal line for open circuit and short circuit.

    Q: Is the wiring harness between front power window sub switch connector E-09 (terminals 4 and 7) and front power window motor (RH) connector E-10 (terminals 1 and 4) in good condition? 

    1. YES:  No action is necessary and testing is complete.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.
  13. STEP 13. Check rear power window sub switch (LH) connector E-25 and rear power window motor (LH) connector E-26 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Are rear power window sub switch (LH) connector E-25 and rear power window motor (LH) connector E-26 in good condition? 

    1. YES:  Go to Step 14.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  14. STEP 14. Check the rear power window sub switch (LH) for continuity. 
    1. Remove the rear power window sub switch (LH). Refer to DOOR GLASS AND REGULATOR  .
    2. Check continuity when the rear power window sub switch (LH) is operated to "UP" or "DOWN" position.
      Switch position Tester connection Specified condition
      UP 4 - 5, 6 - 7 Continuity exists (2 Ω or less)
      OFF 4 - 5, 7 - 8 Continuity exists (2 Ω or less)
      DOWN 4 - 6, 7 - 8 Continuity exists (2 Ω or less)
      Fig 5: Identifying Power Window Sub Switch Connector Terminals
      G05384095

    Q: Is the rear power window sub switch (LH) normal? 

    1. YES:  Go to Step 15.
    2. NO:  Replace the rear power window sub switch (LH). When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  15. STEP 15. Check the rear power window motor (LH). 
    1. Remove the rear power window regulator assembly (LH). Refer to DOOR GLASS AND REGULATOR  .
    2. Connect a battery to the motor terminal, and check that the motor runs freely.
      Battery connection Slider position
      • Connect terminal 4 to the negative battery terminal
      • Connect terminal 1 to the positive battery terminal
      		 UP
      • Connect terminal 1 to the negative battery terminal
      • Connect terminal 4 to the positive battery terminal
      		 DOWN
      Fig 6: Identifying Rear Power Window Regulator Assembly Connectors (LH)
      G05384096

    Q: Is the rear power window motor (LH) normal? 

    1. YES:  Go to Step 16.
    2. NO:  Replace the rear power window regulator assembly (LH). When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  16. STEP 16. Check the battery power supply circuit to the rear power window sub switch (LH). Measure the voltage at rear power window sub switch (LH) connector E-25. 
    1. Disconnect rear power window sub switch (LH) connector E-25 and measure the voltage available at the wiring harness side of the connector.
    2. Measure the voltage between terminal 6 and ground.
      • The voltage should measure approximately 12 V (battery positive voltage).

    Q: Is the measured voltage approximately 12 V (battery positive voltage)? 

    1. YES:  Go to  Step 19.
    2. NO:  Go to Step 17.
      Fig 7: Measuring Voltage Between Terminal 6 And Ground
      G05384097
  17. STEP 17. Check ETACS-ECU connector C-311 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is ETACS-ECU connector C-311 in good condition? 

    1. YES:  Go to Step 18.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  18. STEP 18. Check the wiring harness between ETACS-ECU connector C-311 (terminal 12) and rear power window sub switch (LH) connector E-25 (terminal 6). 
    • Check the power supply line for open circuit and short circuit.
    NOTE: Also check intermediate connector D-20. If intermediate connector D-20 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between ETACS-ECU connector C-311 (terminal 12) and rear power window sub switch (LH) connector E-25 (terminal 6) in good condition? 

    1. YES:  No action is necessary and testing is complete.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  19. STEP 19. Check the ground circuit to the rear power window sub switch (LH). Measure the resistance at rear power window sub switch (LH) connector E-25. 
    1. Disconnect rear power window sub switch (LH) connector E-25 and measure the resistance available at the wiring harness side of the connector.
    2. Measure the resistance value between terminal 5 and ground, and also between terminal 8 and ground.
      • The resistance should be 2 Ω or less.

    Q: Is the measured resistance 2 Ω or less? 

    1. YES:  Go to  Step 21.
    2. NO:  Go to Step 20.
      Fig 8: Measuring Resistance Value Between Terminal 5 And Ground, And Terminal 8 And Ground
      G05384098
  20. STEP 20. Check the wiring harness between power window main switch connector E-28 (terminals 18 and 19) and rear power window sub switch (LH) connector E-25 (terminals 5 and 8). 
    • Check the signal line for open circuit and short circuit.
      NOTE: Also check intermediate connectors C-36, C-125 and D-20. If intermediate connectors C-36, C-125 or D-20 is damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between power window main switch connector E-28 (terminals 18 and 19) and rear power window sub switch (LH) connector E-25 (terminals 5 and 8) in good condition? 

    1. YES:  Replace the power window main switch. When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  21. STEP 21. Check the wiring harness between rear power window sub switch (LH) connector E-25 (terminals 4 and 7) and rear power window motor (LH) connector E-26 (terminals 4 and 1). 
    • Check the signal line for open circuit and short circuit.

    Q: Is the wiring harness between rear power window sub switch (LH) connector E-25 (terminals 4 and 7) and rear power window motor (LH) connector E-26 (terminals 4 and 1) in good condition? 

    1. YES:  Replace the power window main switch. When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
  22. STEP 22. Check rear power window sub switch (RH) connector E-22 and rear power window motor (RH) connector E-21 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Are rear power window sub switch (RH) connector E-22 and rear power window motor (RH) connector E-21 in good condition? 

    1. YES:  Go to Step 23.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
  23. STEP 23. Check the rear power window sub switch (RH) for continuity. 
    1. Remove the rear power window sub switch (RH). Refer to DOOR GLASS AND REGULATOR  .
    2. Check continuity when the rear power window sub switch (RH) is operated to "UP" or "DOWN" position.
      Switch position Tester connection Specified condition
      UP 4 - 5, 6 - 7 Continuity exists (2 Ω or less)
      OFF 4 - 5, 7 - 8 Continuity exists (2 Ω or less)
      DOWN 4 - 6, 7 - 8 Continuity exists (2 Ω or less)
      Fig 9: Identifying Power Window Sub Switch Connector Terminals
      G05384095

    Q: Is the rear power window sub switch (RH) normal? 

    1. YES:  Go to Step 24.
    2. NO:  Replace the rear power window sub switch (RH). When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
  24. STEP 24. Check the rear power window motor (RH). 
    1. Remove the rear power window regulator assembly (RH). Refer to DOOR GLASS AND REGULATOR  .
    2. Connect a battery to the motor terminal, and check that the motor runs freely.
      Battery connection Slider position
      • Connect terminal 4 to the negative battery terminal
      • Connect terminal 1 to the positive battery terminal
      		 UP
      • Connect terminal 1 to the negative battery terminal
      • Connect terminal 4 to the positive battery terminal
      		 DOWN
      Fig 10: Identifying Rear Power Window Regulator Assembly Connectors (RH)
      G05384096

    Q: Is the rear power window motor (RH) normal? 

    1. YES:  Go to Step 25.
    2. NO:  Replace the rear power window regulator assembly (RH). When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
  25. STEP 25. Check the battery power supply circuit to the rear power window sub switch (RH). Measure the voltage at rear power window sub switch (RH) connector E-22. 
    1. Disconnect rear power window sub switch (RH) connector E-22 and measure the voltage available at the wiring harness side of the connector.
    2. Measure the voltage between terminal 6 and ground.
      • The voltage should measure approximately 12 V (battery positive voltage).

    Q: Is the measured voltage approximately 12 V (battery positive voltage)? 

    1. YES:  Go to  Step 28.
    2. NO:  Go to Step 26.
      Fig 11: Measuring Voltage Between Terminal 6 And Ground
      G05384101
  26. STEP 26. Check ETACS-ECU connector C-311 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Is ETACS-ECU connector C-311 in good condition? 

    1. YES:  Go to Step 27.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
  27. STEP 27. Check the wiring harness between ETACS-ECU connector C-311 (terminal 12) and rear power window sub switch (RH) connector E-22 (terminal 6). 
    • Check the power supply line for open circuit and short circuit.
      NOTE: Also check intermediate connector D-01. If intermediate connector D-01 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between ETACS-ECU connector C-311 (terminal 12) and rear power window sub switch (RH) connector E-22 (terminal 6) in good condition? 

    1. YES:  No action is necessary and testing is complete.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
  28. STEP 28. Check the ground circuit to the rear power window sub switch (RH). Measure the resistance at rear power window sub switch (RH) connector E-22. 
    1. Disconnect rear power window sub switch (RH) connector E-22 and measure the resistance available at the wiring harness side of the connector.
    2. Measure the resistance value between terminal 5 and ground, and also between terminal 8 and ground.
      • The resistance should be 2 Ω or less.

    Q: Is the measured resistance 2 Ω or less? 

    1. YES:  Go to  Step 30.
    2. NO:  Go to Step 29.
      Fig 12: Measuring Resistance Value Between Terminal 5 And Ground, And Terminal 8 And Ground
      G09627588
  29. STEP 29. Check the wiring harness between power window main switch connector E-28 (terminals 15 and 17) and rear power window sub switch (RH) connector E-22 (terminals 5 and 8). 
    • Check the signal line for open circuit and short circuit.
      NOTE: Also check intermediate connectors C-22, C-125 and D-01. If intermediate connectors C-22, C-125 or D-01 is damaged, repair or replace the damaged component(s) as described in HARNESS CONNECTOR INSPECTION .

    Q: Is the wiring harness between power window main switch connector E-28 (terminals 15 and 17) and rear power window sub switch (RH) connector E-22 (terminals 5 and 8) in good condition? 

    1. YES:  Replace the power window main switch. When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
  30. STEP 30. Check the wiring harness between rear power window sub switch (RH) connector E-22 (terminals 4 and 7) and rear power window motor (RH) connector E-21 (terminals 4 and 1). 
    • Check the signal line for open circuit and short circuit.

    Q: Is the wiring harness between rear power window sub switch (RH) connector E-22 (terminals 4 and 7) and rear power window motor (RH) connector E-21 (terminals 4 and 1) in good condition? 

    1. YES:  No action is necessary and testing is complete.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the rear power window sub switch (RH) is operated, the rear power window (RH) should raise and lower normally.
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