Inspection Procedure B-6: Front Passenger’s and /or Rear Power Window do not Work by means of the Power Window Main Switch.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM
If the passenger’s and/or rear power window <Double cab> does not work by means of the power window main switch, the power window main switch or the respective power window sub switch(es) may be defective.

PROBABLE CAUSES

  • Malfunction of the power window main switch
  • Malfunction of the power window sub switch (front: RH), power window sub switch (rear: RH) or power window sub switch (rear: LH)
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the power window main switch.
Check that the driver’s power window works by means of the power window main switch.

Q. Is the check result normal?
Go to Step 2.
Refer to .

STEP 2. Check the power window sub switch.
Check that each power window works by means of the respective power window sub switch when the power window lock switch is turned off.

Q. Is the check result normal?
Go to Step 3.
Refer to .

STEP 3. Check the power supply circuit.
When the ignition switch is turned to the LOCK (OFF) position, check if the hazard warning lamps illuminate.

Q. Is the check result normal?
Go to Step 4.
Refer to GROUP 54A, Inspection Procedure A-1 "Check the battery power supply circuit to the ETACS-ECU" .

STEP 4. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "ON" position, check that the ETACS-ECU does not set the diagnosis code.

Q. Is the diagnosis code set?
GROUP 54B, Diagnosis Code Chart (Refer to ).
Go to Step 5.

STEP 5. Retest the system.
Check that the front passenger’s and/or rear power window operate with the power window main switch.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the power window main switch.