[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - WINDSHIELD WIPER AND WASHER - INSPECTION PROCEDURE G-7: The windshield washer does not work. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE G-7: The windshield washer does not work.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM The windshield washer motor, the column switch or the front-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the windshield washer motor Malfunction of the column switch Malfunction of the front-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Check the operation of the windshield wipers. Check that the windshield wipers work normally. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure G-1 "The windshield wipers does not work at all."
| Step 2. Pulse check Check the input signals below which are related to the windshield wiper.
System switch | Check condition
--- | ---
Ignition switch (ACC) | When turned from the LOCK (OFF) position to the ACC position.
Windshield washer switch | When the switch is turned from off to on.
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Is the check result normal? All the signals are received normally: Go to Step 3. The ignition switch (ACC) signal is not received.: Refer to Inspection Procedure P-1 "The ignition switch (ACC) signal is not received ." Windshield washer 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 3. Connector check: A-26 windshield washer motor connector Q: Is the check result normal? YES: Go to Step 4. NO: Repair the connector.
| Step 4. Check the windshield washer motor assembly. Refer to GROUP 51 - Windshield washer. Q: Is the check result normal? YES: Go to Step 5 NO: Replace the windshield washer motor.
| Step 5. Measure the resistance at the A-26 windshield washer motor connector. Disconnect the connector, and measure at the wiring harness side. Continuity between A-26 windshield washer motor connector terminal No.1 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 A-26 windshield washer motor connector terminal No.1 and body earth. 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: A-12X front-ECU connector Q: Is the check result normal? YES: Go to Step 8. NO: Repair the connector.
| Step 8. Check the wiring harness between A-26 windshield washer motor connector terminal No.2 and A-12X front-ECU connector terminal No.31. Check the power supply line to the ignition switch (ACC) for open circuit. Q: Is the check result normal? YES: Go to Step 9. NO: Repair the wiring harness.
| Step 9. Retest the system. The windshield washer 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 front-ECU.

[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - WINDSHIELD WIPER AND WASHER - INSPECTION PROCEDURE G-7: The windshield washer does not work. | PRINT PAGE / INDEX / PRIOR / NEXT

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