Inspection Procedure 4

Safety Mechanism does not Function










CIRCUIT OPERATION
The power for the safety mechanism circuit in the sunroof-ECU is supplied from fusible link number 8. .

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a malfunction of the sunroof-ECU power supply for safety mechanism circuit system or of the ground circuit system.

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

DIAGNOSIS







STEP 1. Measure the power supply line voltage at sunroof-ECU connector E-07.

1. Remove the headlining. (Refer to Headlining)
2. Disconnect sunroof-ECU connector E-07 and measure at the harness side.
3. Measure the voltage between terminal 7 and ground.
- Voltage should be approximately 12 volts (battery positive voltage).

Q: Is measured the voltage approximately 12 volts?
YES: Go to Step 4.
NO: Go to Step 2.







STEP 2. Check sunroof-ECU connector E-07 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is sunroof-ECU connector E-07 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 fusible link number 8 and sunroof-ECU connector E-07 (terminal No. 7).

NOTE: After inspecting intermediate connectors C-01, D-02 and D-09, inspect the wire. If intermediate connectors C-01, D-02 or D-09 is damaged, repair or replace it. Refer to Harness Connector Inspection. Then go to Step 4.

Q: Are there any damaged wires between fusible link number 8 and sunroof-ECU connector E-07 (terminal No. 7)?
YES: Repair or replace the harness wire, then go to Step 4.
NO: Go to Step 5.










STEP 4. Check the harness wires between sunroof-ECU connector E-07 and ground.

NOTE: After inspecting intermediate connectors C-01, inspect the wire. If intermediate connectors C-01 is damaged, repair or replace it. Refer to Harness Connector Inspection. Then go to Step 5.

Q: Are there any damaged wires between sunroof-ECU connector E-07 and ground?
YES: Repair or replace the damaged components, then go to Step 5.
NO: Replace the sunroof-ECU. Then go to Step 5.

STEP 5. Retest the system.

Q: Does the safety mechanism work normally?
YES: The procedures is complete.
NO: Return to Step 1.