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INSPECTION PROCEDURE P-9: When the sunroof switch is operated, the switch signals are not received.
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|  CAUTION
Whenever the ECU is replaced, ensure that the input signal circuit is normal.
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| COMMENTS ON TROUBLE SYMPTOM
If the input signal from the sunroof switch is abnormal, the sunroof input check response signal will not be sent to the SWS communication line.
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| POSSIBLE CAUSES
- Malfunction of the sunroof motor assembly
- Malfunction of the sunroof switch
- Damaged harness wires and connectors
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| Step 1. Check the operation condition of the sunroof.
Check that the sunroof works normally.
Q: Is the check result normal?
YES:
Go to Step 2  .
NO:
Refer to Inspection Procedure F-1 "Sunroof does not work at all  ."
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| Step 2. Connector check: D-06 sunroof switch connector Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Repair the defective connector.
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| Step 3. Check the sunroof switch.
Check the sunroof switch (Refer to GROUP 42 -
Sunroof ).
Q: Is the check result normal?
YES:
Go to Step 4 .
NO:
Replace the sunroof switch.
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| Step 4. Measure the resistance at the D-06 sunroof switch connector. - Disconnect the connector, and measure at the wiring harness side.
- Continuity between terminal 4 and body earth
OK: 2Ω
or less
Q: Is the check result normal?
YES:
Go to Step 6 .
NO:
Go to Step 5 .
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| Step 5. Check the wiring harness between D-06 sunroof motor switch connector terminal No.4 and body earth. NOTE: Prior to the wiring harness inspection, check intermediate connector C-218 <RH drive vehicles>, and repair if necessary.
- Check the earth wires for open circuit.
Q: Is the check result normal?
YES:
The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction ).
NO:
Repair the wiring harness.
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| Step 6. Connector check: D-09 sunroof motor assembly connector Q: Is the check result normal?
YES:
Go to Step 7 .
NO:
Repair the defective connector.
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| Step 7. Check the wiring harness from D-09 sunroof motor assembly connector terminal Nos.6, 7 and 8 to D-06 sunroof switch connector terminal Nos.6, 3 and 5. - Check the input line for open circuit.
Q: Is the check result normal?
YES:
Go to Step 8 .
NO:
Repair the wiring harness.
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| Step 8. Connector check: C-219 ETACS-ECU connector Q: Is the check result normal?
YES:
Go to Step 9 .
NO:
Repair the defective connector.
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| Step 9. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.10 and C-219 ETACS-ECU connector terminal No.59. NOTE: Prior to the wiring harness inspection, check joint connector C-02 and intermediate connector C-218, and repair if necessary.
- Check the communication lines for open circuit.
Q: Is the check result normal?
YES:
Go to Step 10 .
NO:
Repair the wiring harness.
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| Step 10. Retest the system.
Check that each switch signal is received by operating the sunroof switch.
Q: Is the check result normal?
YES:
The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction ).
NO:
Replace the sunroof motor assembly.
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