[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - REAR WIPER AND WASHER - INSPECTION PROCEDURE H-4: The rear washer does not work. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE H-4: The rear washer does not work.
| CAUTION Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
| COMMENTS ON TROUBLE SYMPTOM If the rear washer does not work normally, the input signal circuits to the rear washer switch, rear washer motor or the ETACS-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the rear washer motor Malfunction of the column switch Malfunction of the ETACS-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Confirm the operation of the rear wiper. Check that the rear wiper work normally. Q: Is the check result normal? YES: Go to Step 2. NO: Refer to Inspection Procedure H-1 "The rear wiper does not work at all ."
| Step 2. Pulse check Check the input signals below which are related to the rear washer. Ignition switch: ACC
System switch | Check conditions
--- | ---
Column switch (rear washer switch) | When the switch turned from off to on
OK: The MUT-II/III sounds or the voltmeter needle fluctuates. Q: Is the check result normal? YES: Go to Step 3. NO: 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-27 rear washer motor connector Q: Is the check result normal? YES: Go to Step 4. NO: Repair the connector.
| Step 4. Check the rear washer motor. Refer to GROUP 51 - Rear wiper and washer . Q: Is the check result normal? YES: Go to Step 5. NO: Replace the rear washer motor.
| Step 5. Measure the resistance at the A-27 rear washer motor connector. Disconnect the connector, and measure at the wiring harness side. Resistance between A-27 rear washer motor connector terminal No. 1 and body earth OK: 2 Ω 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-27 rear washer motor connector terminal No. 1 and body earth. Check the earth line for open or short 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-220 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 C-220 ETACS-ECU connector terminal No.23 and A-27 rear washer motor connector terminal No.2. NOTE: Prior to the wiring harness inspection, check intermediate connector C-116 and repair if necessary. Check the power supply line for open or short 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 rear washer works 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 ETACS-ECU.

[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - REAR WIPER AND WASHER - INSPECTION PROCEDURE H-4: The rear washer does not work. | PRINT PAGE / INDEX / PRIOR / NEXT

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