[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - SUNROOF - StepINSPECTION PROCEDURE F-3: Sunroof timer function does not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

StepINSPECTION PROCEDURE F-3: Sunroof timer function does not work normally.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM If the sunroof timer function does not work, the input circuit from the ignition switch (IG1) or the driver's door switch, the communication lines between the ETACS-ECU and the sunroof motor assembly (sunroof-ECU), the sunroof motor assembly (sunroof-ECU) or the ETACS-ECU may be defective.
| POSSIBLE CAUSES Malfunction of ETACS-ECU 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: Are 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 timer function. <Selected item> ETACS ECU Ignition switch: OFF
Item No. | Item name | Normal conditions
--- | --- | ---
Item 30 | IG SW(IG1) | OFF
Item 32 | DR DOOR SW | From OFF to ON
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. 32: Refer to inspection procedure P-4 "The driver's door switch signal is not received ."
| Step 3. 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 72 | S/R ECU ACK | INPUT CHECK (only momentarily when switch is operated)
OK: Normal condition is displayed. Q: Is the check result normal? YES: Go to Step 4. NO: Replace the sunroof motor assembly.
| Step 4. Connector check: D-09 sunroof motor assembly connector Q: Is the check result normal? YES: Go to Step 5. NO: Repair the connector.
| Step 5. 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 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 7. NO: Go to Step 6.
| Step 6. 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 7. Connector check: C-219 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 8. NO: Repair the connector.
| Step 8. 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 9. NO: Repair the wiring harness.
| Step 9. Retest the system. Check that the sunroof timer function 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 - StepINSPECTION PROCEDURE F-3: Sunroof timer function does not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

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