Headlamp Washer Circuit

HEADLAMP WASHER CIRCUIT





Component Function Check
1.CHECK HEADLAMP WASHER OPERATION
CONSULT-III ACTIVE TEST
1. Select "HEAD LAMP WASHER" of IPDM E/R active test item.
2. With operating the test item, check headlamp operation.

On :Headlamp washer ON operation
Off :Stop the headlamp washer.

Is headlamp washer operation normally?
YES - Headlamp washer circuit is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK HEADLAMP WASHER FUSIBLE LINK
1. Turn the ignition switch OFF.
2. Check that the headlamp washer 30A fusible link (#U) is not fusing.
Is the fusible link fusing?
YES - Replace the fusible link after repairing the applicable circuit.
NO - GO TO 2.
2.CHECK HEADLAMP WASHER RELAY POWER SUPPLY
1. Remove headlamp washer relay.
2. Check voltage between headlamp washer relay harness connector and ground.





Is the measurement value normal?
YES - GO TO 3.
NO - Repair harnesses or connectors.
3.CHECK HEADLAMP WASHER RELAY
Check headlamp washer relay. Headlamp Washer Relay.
Is the headlamp washer relay normal?
YES - GO TO 4.
NO - Replace headlamp washer relay.
4.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL
CONSULT-III ACTIVE TEST
1. Turn the ignition switch OFF.
2. Install headlamp washer relay.
3. Turn the ignition switch ON.
4. Select "HEAD LAMP WASHER" of IPDM E/R active test item.
5. With operating the test item, check voltage between IPDM E/R harness connector and ground.






Is the measurement value normal?
YES - GO TO 7.
Fixed at 0 V - GO TO 5.
Fixed at battery voltage -Replace IPDM E/R.
5.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Disconnect IPDM E/R harness connector.
4. Check continuity between IPDM E/R harness connector and headlamp washer relay harness connector.





Does continuity exist?
YES - GO TO 6.
NO - Repair the harnesses or connectors.
6.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL SHORT CIRCUIT
Check continuity between IPDM E/R harness connector and ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Replace IPDM E/R.
7.CHECK HEADLAMP WASHER PUMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Disconnect headlamp washer pump connector.
4. Check continuity between headlamp washer relay harness connector and headlamp washer pump harness connector.





Does continuity exist?
YES - GO TO 8.
NO - Repair the harnesses or connectors.
8.CHECK HEADLAMP WASHER PUMP (GND) OPEN CIRCUIT
Check continuity headlamp washer pump harness connector and ground.





Does continuity exist?
YES - Replace headlamp washer pump.
NO - Repair the harnesses or connectors.