Inspection Procedure 3

The Sunroof Motor does not Operate







CIRCUIT OPERATION
The sunroof-ECU monitors the sunroof switch status (slide open, slide close, tilt down, tilt up) and operates the sunroof motor.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a malfunction of the sunroof motor power supply/ground circuit system.

TROUBLESHOOTING HINTS
- Malfunction of the sunroof-ECU
- Malfunction of the sunroof motor
- Damaged harness wires or connectors







STEP 1. Measure the power supply/ground line at sunroof motor connector E-09.
1. Remove the headlining. (Refer Headlining)
2. Disconnect sunroof motor connector E-09 and measure at the harness side.
3. Turn the ignition key "ON".
4. Measure the voltage between terminal 1 and ground while the sunroof switch is depressing to the slide open/close position. And measure the voltage between terminal 2 and ground while the sunroof switch is depressing to the slide open/close position.
- The measured value should be approximately 12 volts (battery positive voltage).

Q: Does the measured voltage correspond with this range?
YES: Go to Step 4.
NO: Go to Step 2.







STEP 2. Check sunroof motor connector E-09 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is sunroof switch connector E-09 damaged?
YES: Repair or replace the damaged components. Refer to Harness Connector Inspection. Then go to Step 5.
NO: Go to Step 3.







STEP 3. Check the harness wires between sunroof-ECU connector E-07 (terminal No.9 and 10) and sunroof motor connector E-09 (terminal No.1 and 2).

Q: Are there any damaged wires between sunroof-ECU connector E-07 (terminal No.9 and 10) and sunroof motor connector E-09 (terminal No.1 and 2)?
YES: Repair or replace the harness wire, then go to Step 5.
NO: Replace the sunroof-ECU. Then go to Step 4.

STEP 4. Check the sunroof motor.







1. Remove the sunroof motor.







2. Follow the table to check for the direction of rotation of the drive gear when the battery is connected to the connector.

Q: Is the sunroof motor damaged?
YES: Replace sunroof motor, then go to Step 5.
NO: Go to Step 5.

STEP 5. Retest the system.

Q: Does the sunroof open and close normally?
YES: The procedure is complete.
NO: Return to Step 1.