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Home >> Mitsubishi >> 2009 >> Galant L4-2.4L (4G69) >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> Inspection Procedure D-4 >> Part 1

Part 1

INSPECTION PROCEDURE D-4: Power Window: Power windows do not work normally by operating the front passenger's or rear passenger's sub switches.


Power Window (Front: RH) Circuit:




Power Window (Rear) Circuit (Part 1):




Power Window (Rear) Circuit (Part 2):






CIRCUIT OPERATION
power window regulator motors raise and lower the door windows when the front passenger's or rear passenger's sub switch is moved to "UP" or "DOWN" position.

TECHNICAL DESCRIPTION (COMMENT)
A power window sub switch or power window regulator motor may be defective. Or, the power window lock switch (incorporated in the power window main switch in the driver's door) may remain pressed in the "LOCK" position.

TROUBLESHOOTING HINTS
- The power window main switch may be defective
- The front power window sub switch may be defective
- The rear power window sub switches may be defective
- The front power window regulator motor (RH) may be defective
- The rear power window regulator motors may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tool:
- MB991223: Harness Set
- MB992006: Extra Fine Probe

STEP 1. Check power window main switch connector E-12 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Is power window main switch connector E-12 in good condition?

YES : Go to Step 2.

NO : Repair or replace the damaged component(s). When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.

STEP 2. Check each switch on the power window main switch for continuity.

1. Remove the power window main switch.







2. Check continuity when each switch on the power window main switch is operated to "UP" or "DOWN" position.







Q: Is the power window main switch normal?

YES : Go to Step 3.

NO : Replace the power window main switch. When the power window sub switch is operated, the power windows should raise and lower normally.

STEP 3. Check the power window lock switch.

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

YES : Go to Step 4.

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.

STEP 4. Check which door window does not move.

Q: Which door window does not move?

Front passenger's side : Go to Step 5.
Rear passenger (LH) : Go to Step 14.
Rear passenger (RH) : Go to Step 23.

STEP 5. Check front power window sub switch connector E-04 and front power window regulator motor (RH) connector E-03 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are front power window sub switch connector E-04 and front power window regulator motor (RH) connector E-03 in good condition?

YES : Go to Step 6.

NO : Repair or replace the damaged component(s). When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.

STEP 6. Check the front power window sub switch for continuity.

1. Remove the front power window sub switch.







2. Check continuity when the front power window sub switch is operated to "UP" or "DOWN" position.







Q: Is the front power window sub switch normal?

YES : Go to Step 7.

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.

STEP 7. Check the front power window regulator motor (RH).

1. Remove the front power regulator assembly (RH).







2. Connect a battery to the motor terminal, and check that the motor runs freely.







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

YES : Go to Step 8.

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.

STEP 8. Check the battery power supply circuit to the front power window sub switch. Measure the voltage at front power window sub switch connector E-04.







1. Disconnect front power window sub switch connector E-04 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 volts (battery positive voltage).

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

YES : Go to Step 11.

NO : Go to Step 9.

STEP 9. Check power window relay connector C-203 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Is power window relay connector C-203 in good condition?

YES : Go to Step 10.

NO : Repair or replace the damaged component(s). When the front power window sub switch (RH) is operated, the front power window (RH) should raise and lower normally.

STEP 10. Check the wiring harness between power window relay connector C-203 (terminal 4) and front power window sub switch connector E-04 (terminal 6).

- Check the communication lines for open circuit and short circuit.












NOTE: Also check junction block connector C-215 and intermediate connector C-12. If junction block connector C-215 or intermediate connectors C-12 is damaged, repair or replace the damaged component(s) as described.

Q: Is the wiring harness between power window relay connector C-203 (terminal 4) and front power window sub switch connector E-04 (terminal 6) in good condition?

YES : No action is necessary and testing is complete.

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.

STEP 11. Check the ground circuit to the front power window sub switch. Measure the resistance at front power window sub switch connector E-04.







1. Disconnect front power window sub switch connector E-04 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 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 13.

NO : Go to Step 12.

STEP 12. Check the wiring harness between power window main switch connector E-12 (terminals 12 and 14) and front power window sub switch connector E-04 (terminals 8 and 5).

- Check the communication lines for open circuit and short circuit.







NOTE: Also check intermediate connectors C-12 and C-26. If intermediate connector C-12 or C-26 is damaged, repair or replace the damaged component(s) as described.

Q: Is the wiring harness between power window main switch connector E-12 (terminals 12 and 14) and front power window sub switch connector E-04 (terminals 8 and 5) in good condition?

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.

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.

STEP 13. Check the wiring harness between front power window sub switch connector E-04 (terminals 4 and 7) and front power window regulator motor (RH) connector E-03 (terminals 1 and 2).

- Check the communication lines for open circuit and short circuit.







Q: Is the wiring harness between front power window sub switch connector E-04 (terminals 4 and 7) and front power window regulator motor (RH) connector E-03 (terminals 1 and 2) in good condition?

YES : No action is necessary and testing is complete.

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.

STEP 14. Check rear power window sub switch (LH) connector E-17 and rear power window regulator motor (LH) connector E-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.







Q: Are rear power window sub switch (LH) connector E-17 and rear power window regulator motor (LH) connector E-16 in good condition?

YES : Go to Step 15.

NO : Repair or replace the damaged component(s). When the rear power window sub switch (LH) is operated, the rear power window (LH) should raise and lower normally.
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