[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP WASHER - INSPECTION PROCEDURE I-1: The headlamp washer does not work. | PRINT PAGE / INDEX / PRIOR / NEXT

HEADLAMP WASHER

INSPECTION PROCEDURE I-1: The headlamp 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 headlamp washer motor, the column switch or the front-ECU may be defective.
| POSSIBLE CAUSES Malfunction of the headlamp washer motor Malfunction of the column switch Malfunction of the front-ECU 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 column switch (column-ECU) and the front-ECU and the SWS communication lines are normal. Turn the ignition switch to the ON position. ECUS TO BE CHECKED COLUMN ECU FRONT ECU OK: "OK" is displayed for all the items Q: Is the check result normal? "OK" is displayed for all the items: Go to Step 2. "NG" is displayed on the "COLUMN ECU" menu.: Refer to Inspection Procedure A-2 "Communication with column switch (column-ECU) is not possible ." "NG" is displayed on the "FRONT ECU" menu.: Refer to Inspection Procedure A-4 "Communication with front-ECU is not possible ."
| Step 2. Function diagnosis by using the SWS monitor Check the SWS communication signal, which are related to the headlamp washer function. <Selected item> HD WASHER Turn the ignition switch to the ACC position. Headlamp washer switch: ON
Item No. | Item name | Normal condition
--- | --- | ---
Item 16 | HD WASHER SW | ON
Item 31 | IG SW (ACC) | ON
Item 70 | FRONT ECU ACK | NORMAL ACK or HI-BEAM ACK
OK: Normal conditions are displayed for all the items. Q: Is the check result normal? Normal conditions displayed for all the items: Go to Step 3. Normal condition is not displayed for item No.16: Replace the column switch. Normal condition is not displayed for item No.31: Refer to Inspection Procedure P-1 "The ignition switch (ACC) signal is not received ." Normal condition is not displayed for item No.70: Replace the front-ECU.
| Step 3. Connector check: A-25 headlamp washer motor connector Q: Is the check result normal? YES: Go to Step 4. NO: Repair the connector.
| Step 4. Check the headlamp washer motor assembly. Refer to GROUP 51 - Headlamp washer . Q: Is the check result normal? YES: Go to Step 5 NO: Replace the headlamp washer motor.
| Step 5. Measure the resistance at the A-25 headlamp washer motor connector. Disconnect the connector, and measure at the wiring harness side. Continuity between A-25 headlamp washer motor connector terminal No.2 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-25 windshield washer motor connector terminal No.2 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-11X front-ECU connector Q: Is the check result normal? YES: Go to Step 8. NO: Repair the connector.
| Step 8. Measure the voltage at the A-11X front-ECU connector. Remove the front-ECU, and measure at the junction block side. Ignition switch: ACC Check the voltage between the A-11X front-ECU connector terminal No.3 and body earth. OK: System voltage Q: Is the check result normal? YES: Go to Step 10. NO: Go to Step 9.
| Step 9. Check the wiring harness between A-11X front-ECU connector terminal No.3 and the fusible link (5). Check the power supply line to the fusible link (5) 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 10. Check the wiring harness between A-25 headlamp washer motor connector terminal No.1 and A-11X front-ECU connector terminal No.1. Check the power supply line from the fusible link (5) for open circuit. Q: Is the check result normal? YES: Go to Step 11. NO: Repair the wiring harness.
| Step 11. Retest the system. The headlamp 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.

[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - HEADLAMP WASHER - INSPECTION PROCEDURE I-1: The headlamp washer does not work. | PRINT PAGE / INDEX / PRIOR / NEXT

©2004 Mitsubishi Motors Corporation