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Inspection Procedure 3

Some door windows do not or close using the power window sub switch (on passenger doors). (However, they open or close when the power window main switch is used.)

Power Window Sub-Switch Power Supply Circuit:






CIRCUIT OPERATION
- Power is supplied to the power window subswitch from the power window relay.

TECHNICAL DESCRIPTION (COMMENT)
- The cause may be a malfunction of the power window sub-switch power supply circuit.

TROUBLESHOOTING HINTS
- Malfunction of the power window sub-switch
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tool:
- MB991223: Harness Set

STEP 1. Check the power window sub-switch continuity.
1. Remove the power window sub-switch.




2. Check the continuity when the power window sub-switch is turned to the UP position or DOWN position.

Q: Is the power window sub-switch damaged?

YES:
Replace it, then go to Step 3.
NO: Go to Step 2.







STEP 2. Check the harness wires between power window sub-switch connector E-05 and connector block connector C-213.

Q: Are there any damaged wires between power window sub-switch connector E-05 and connector block connector C-213?

YES:
Repair them, then go to Step 3.
NO: Go to Step 3.

STEP 3. Check symptoms

Q: Can the power window sub-switch on the passenger 5 door open or close all door windows?

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