[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - SUNROOF - INSPECTION PROCEDURE F-1: The sunroof does not work at all. | PRINT PAGE / INDEX / PRIOR / NEXT

SUNROOF

INSPECTION PROCEDURE F-1: The sunroof does not work at all.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM If the sunroof does not work at all, these power supply circuit(s), these earth circuit(s), sunroof switch or the sunroof motor assembly (sunroof-ECU) may be defective.
| POSSIBLE CAUSES Malfunction of the sunroof switch Malfunction of the sunroof motor assembly (sunroof-ECU) Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Pulse check Check the input signal from the ignition switch (IG1).
System switch | Check condition
--- | ---
Ignition switch (IG1) | When turned from ACC to ON
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ."
| Step 2. Connector check: D-06 sunroof switch connector Q: Is the check result normal? YES: Go to Step 3. NO: Repair the connector.
| Step 3. 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.
| Step 4. Measure the resistance at the D-06 sunroof switch connector. Disconnect the connector, and measure at the wiring harness side. Continuity between D-06 sunroof switch connector terminal No.4 and body earth OK: 2Ω or less Q: Is the check result normal? YES: Go to Step 6. NO: Go to Step 5.
| Step 5. Check the wiring harness between D-06 sunroof 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.
| Step 6. Connector check: D-09 sunroof motor assembly connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the connector.
| Step 7. Measure the voltage at the D-09 sunroof motor assembly connector. Disconnect the sunroof motor assembly connector, and measure at the harness side. Check the voltage between the D-09 sunroof motor assembly connector terminal No.1 and body earth. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 9. NO: Go to Step 8.
| Step 8. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.1 and the battery. Check the power supply line to the battery 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.
| Step 9. Measure the voltage at the D-09 sunroof motor assembly connector. Disconnect the sunroof motor assembly connector, and measure at the harness side. Ignition switch: ON Check the voltage between the D-09 sunroof motor assembly connector terminal No.2 and body earth. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 11. NO: Go to Step 10.
| Step 10. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.2 and the ignition switch (IG2). NOTE: Prior to the wiring harness inspection, check junction block connectors C-210 and C-203, and repair if necessary. Check the power supply line to the ignition switch (IG2) 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.
| Step 11. Measure the resistance at the D-09 sunroof motor assembly connector. Disconnect the sunroof motor assembly connector, and measure at the harness side. Check the resistance between D-09 sunroof motor assembly connector terminal No.5 and body earth. OK: 2Ω or less Q: Is the check result normal? YES: Go to Step 13. NO: Go to Step 12.
| Step 12. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.5 and body earth. NOTE: Prior to the wiring harness inspection, check intermediate connector C-218 <RH drive vehicles>, and repair if necessary. Check body earth line 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.
| Step 13. Retest the system. The sunroof assembly should now work normally. 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.

[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - SUNROOF - INSPECTION PROCEDURE F-1: The sunroof does not work at all. | PRINT PAGE / INDEX / PRIOR / NEXT

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