[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <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. ECU check on the SWS monitor Check that the power supply and earth lines to the sunroof motor assembly (sunroof-ECU) and the ETACS-ECU and the SWS communication lines are normal. Ignition switch: ON Operate the sunroof switch. ECUS TO BE CHECKED ETACS ECU SUNROOF ECU OK: "OK" are displayed for all the items. Q: Is the check result normal? "OK" are displayed for all the items: Go to Step 2. "NG" is displayed on the "ETACS ECU" menu.: Refer to Inspection Procedure A-3 "Communication with the ETACS-ECU is not possible ." "NG" is displayed on the "SUNROOF ECU" menu.: Refer to Inspection Procedure A-6 "Communication with the sunroof motor assembly (sunroof-ECU) is not possible ."
| Step 2. Function diagnosis by using the SWS monitor Check the SWS communication signal, which are related to the sunroof. <Selected item> SUNROOF OPE Ignition switch: ON
Item No. | Item name | Normal conditions
--- | --- | ---
Item 30 | IG SW(IG1) | ON
Item 72 | S/R ECU ACK | INPUT CHECK (only momentarily when switch is operated)
OK: Normal conditions displayed for all the items. Q: Are the check result normal? Normal conditions are displayed for all the items.: Go to Step 3. Normal condition is not displayed for item No. 30: Refer to inspection procedure P-2 "The ignition switch (IG1) signal is not received ." Normal condition is not displayed for item No. 72: Replace the sunroof motor assembly.
| Step 3. Connector check: D-06 sunroof switch connector Q: Is the check result normal? YES: Go to Step 4. NO: Repair the connector.
| Step 4. Check the sunroof switch. Refer to GROUP 42 - Sunroof . Q: Is the check result normal? YES: Go to Step 5. NO: Replace the sunroof switch.
| Step 5. 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 7. NO: Go to Step 6.
| Step 6. 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, 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 7. Connector check: D-09 sunroof motor assembly connector Q: Is the check result normal? YES: Go to Step 8. NO: Repair the connector.
| Step 8. 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 10. NO: Go to Step 9.
| Step 9. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.1 and the fusible link (5). NOTE: Prior to the wiring harness inspection, check intermediate connectors A-14, C-126 and C-218, and repair if necessary. 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 10. 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 12. NO: Go to Step 11.
| Step 11. 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 12. 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 14. NO: Go to Step 13.
| Step 13. 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, 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 14. 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.

[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <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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