[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - WINDSHIELD WIPER AND WASHER - INSPECTION PROCEDURE G-4: The windshield wipers do not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE G-4: The windshield wipers do not work normally.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM The windshield wiper motor, the column switch or the front-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the windshield wiper motor Malfunction of the column switch Malfunction of the front-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Pulse check Check the input signals below which are related to the windshield wiper.
System switch | Check conditions
--- | ---
Ignition switch (ACC) | When turned from the LOCK (OFF) position to the ACC position.
Windshield mist wiper switch | When the switch is turned from off to on.
Windshield intermittent wiper switch | When the switch is turned from off to on.
Windshield low-speed wiper switch | When the switch is turned from off to on.
Windshield high-speed wiper switch | When the switch is turned from off to on.
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Are the check result normal? All the signals are received normally: Go to Step 2. The ignition switch (ACC) signal is not received.: Refer to inspection procedure P-1 "The ignition switch (ACC) signal is not received ." Windshield mist wiper switch signal is not received.: Refer to inspection procedure P-6 "The column switch (windshield wiper washer and rear wiper washer switch) signal is not received ." Windshield intermittent wiper switch signal is not received.: Refer to inspection procedure P-6 "The column switch (windshield wiper washer and rear wiper washer switch) signal is not received ." Windshield low-speed wiper switch signal is not received.: Refer to inspection procedure P-6 "The column switch (windshield wiper washer and rear wiper washer switch) signal is not received ." Windshield high-speed wiper switch signal is not received.: Refer to inspection procedure P-6 "The column switch (windshield wiper washer and rear wiper washer switch) signal is not received ."
| Step 2. Check the operation of the windshield wipers. Check that the windshield wipers work at high speed and the mist mode. Q: Is the check result normal? YES: Go to Step 3. NO: Go to Step 9.
| Step 3. Connector check: B-07 windshield wiper motor connector Q: Is the check result normal? YES: Go to Step 4. NO: Repair the defective connector.
| Step 4. Measure the voltage at the B-07 windshield wiper motor connector. Disconnect the connector, and measure at the wiring harness side. Ignition switch: ON Windshield wiper switch: LO Check the voltage between the B-07 windshield wiper motor connector terminal No.3 and body earth. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 5. NO: Go to Step 6.
| Step 5. Retest the system. Check that the windshield wipers work normally by moving the switch to each position. 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 windshield wiper motor.
| Step 6. Connector check: A-12X front-ECU connector Q: Is the check result normal? YES: Go to Step 7. NO: Repair the defective connector.
| Step 7. Check the wiring harness between B-07 windshield wiper motor connector terminal No.3 to A-12X front-ECU connector terminal No.25. NOTE: Prior to the wiring harness inspection, check the intermediate connector A-14, and repair if necessary. Check the input signal lines. Q: Is the check result normal? YES: Go to Step 8. NO: Replace the front-ECU.
| Step 8. Retest the system. Check that the windshield wipers work normally by moving the switch to each position. 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 windshield wiper motor.
| Step 9. Connector check: B-07 windshield wiper motor connector Q: Is the check result normal? YES: Go to Step 10. NO: Repair the defective connector.
| Step 10. Measure the voltage at the B-07 windshield wiper motor connector. Disconnect the connector, and measure at the wiring harness side. Ignition switch: ON Windshield wiper switch: HI Check the voltage between the B-07 windshield wiper motor connector terminal No.5 and body earth. OK: Battery positive voltage Q: Is the check result normal? YES: Go to Step 11. NO: Go to Step 12.
| Step 11. Retest the system. Check that the windshield wipers work normally by moving the switch to each position. 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 windshield wiper motor.
| Step 12. Connector check: A-12X front-ECU connector Q: Is the check result normal? YES: Go to Step 13. NO: Repair the defective connector.
| Step 13. Check the wiring harness between B-07 windshield wiper motor connector terminal No.5 to A-12X front-ECU connector terminal No.24. NOTE: Prior to the wiring harness inspection, check the intermediate connector A-14, and repair if necessary. Check the input signal lines. Q: Is the check result normal? YES: Go to Step 14. NO: Replace the front-ECU.
| Step 14. Retest the system. Check that the windshield wipers work normally by moving the switch to each position. 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 windshield wiper motor.

[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - WINDSHIELD WIPER AND WASHER - INSPECTION PROCEDURE G-4: The windshield wipers do not work normally. | PRINT PAGE / INDEX / PRIOR / NEXT

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