[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - INSPECTION PROCEDURE A-6: Communication with the sunroof motor assembly (sunroof-ECU) is not possible. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE A-6: Communication with the sunroof motor assembly (sunroof-ECU) is not possible.
| CAUTION Whenever the ECU is replaced, ensure that the power supply circuit, the grounding circuit and the communication circuit are normal.
| COMMENTS ON TROUBLE SYMPTOM The sunroof motor assembly, the power supply circuit or the communication circuit for that assembly may be defective.
| POSSIBLE CAUSES Malfunction of the sunroof motor assembly Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. ECU check by using the SWS monitor Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal. Ignition switch: OFF ECU TO BE CHECKED ETACS ECU OK: "OK" is displayed on the "ETACS ECU" menu. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure A-3 "Communication with ETACS-ECU is not possible ."
| Step 2. Connector check: D-09 sunroof motor assembly connector Q: Is the check result normal? YES: Go to Step 3. NO: Repair the defective connector.
| Step 3. Measure the voltage at D-09 sunroof motor assembly connector. Disconnect the connector, and measure at the wiring harness side. Voltage between 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 5. NO: Go to Step 4.
| Step 4. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.1 and fusible link (5). NOTE: Prior to the wiring harness inspection, check intermediate connectors A-14 <RH drive vehicle>, C-116 <LH drive vehicle>, <RH drive vehicle> and C-218, and repair if necessary. Check the power supply 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 5. Measure the voltage at D-09 sunroof motor assembly connector. Disconnect the connector, and measure at the wiring harness side. Ignition switch: ON 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 ignition switch (IG2). NOTE: Prior to the wiring harness inspection, check junction block connectors C-203 and C-210, and repair if necessary. Check the power supply 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 7. Measure the resistance at D-09 sunroof motor assembly connector. Disconnect the connector, and measure at the wiring harness side. Resistance between D-09 sunroof motor assembly connector terminal No.5 and body earth OK: 2 Ω or less 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.5 and body earth. NOTE: Prior to the wiring harness inspection, check intermediate connector C-218 <R.H. 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 9. Connector check: C-219 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 10. NO: Repair the defective connector.
| Step 10. 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 11. NO: Repair the wiring harness.
| Step 11. ECU check by using the SWS monitor Check that the power supply and earth lines to the sunroof motor assembly and the SWS communication lines are normal. Ignition switch: ON ECUS TO BE CHECKED SUNROOF ECU OK: "OK" is displayed on the "SUNROOF ECU" menu. 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.

[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - INSPECTION PROCEDURE A-6: Communication with the sunroof motor assembly (sunroof-ECU) is not possible. | PRINT PAGE / INDEX / PRIOR / NEXT

©2004 Mitsubishi Motors Corporation