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Home >> Mitsubishi >> 2006 >> Lancer Evolution L4-2.0L DOHC Turbo >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> Inspection Procedure G-3

Inspection Procedure G-3

Windshield Wiper and Washer: Any of the windshield wiper switch positions is defective.

NOTE: This troubleshooting procedure requires the use of scan tool MB991958 and SWS monitor kit MB991813. For details on how to use the SWS monitor, refer to "How to use SWS monitor."

Windshield Wiper Motor Drive Circuit:






TECHNICAL DESCRIPTION (COMMENT)
If either of the windshield wiper switch positions is inoperative, the windshield wiper motor, column switch (windshield wiper and washer switch) or the front-ECU may be defective.

TROUBLESHOOTING HINTS
- Trouble in input signal system
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
- The wiper motor may be defective
- The front-ECU may be defective

DIAGNOSIS

Required Special Tools:
- MB991223: Harness Set
- MB992006: Extra Fine Probe
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991911: M.U.T.-III Main Harness B
- MB991813: SWS monitor kit
- MB991806: SWS monitor cartridge
- MB991812: SWS monitor harness (for column-ECU)
- MB991922: Probe harness

STEP 1. Check the input signal by using "DATA LIST" menu of the SWS monitor.

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. Connect special tool MB991911 before connecting special tool MB991812. Be sure to connect special tool MB991806 after turning on special tool MB991824.




1. Connect the special tool. Refer to "How to connect SWS monitor."
2. Turn the ignition switch to the "ACC" position.
3. Operate scan tool MB991958 according to the procedure below to display "COLUMN ECU."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Data List."
f. Select "COLUMN ECU."




4. Check that normal conditions are displayed on the items described in the table.

Q: Does scan tool MB991958 display the items "INT WIPER SW", "LO WIPER SW", "HI WIPER SW" and "MIST WIPER SW" as normal condition?

YES: Go to Step 2.

NO: Refer to Inspection Procedure N-7 "The ETACS-ECU does not receive any signal from the windshield mist wiper switch."




STEP 2. Check windshield wiper motor connector B-01 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is windshield wiper motor connector B-01 in good condition?

YES: Go to Step 3.

NO: Repair or replace the damaged components). Refer to Harness Connector Inspection. Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.

STEP 3. Check the windshield wiper motor.




1. Disconnect windshield wiper motor connector B-01.
2. Connect a battery to the windshield wiper motor as shown. Then check the windshield wiper motor operates normally at high and low speeds.

Q: Does the windshield wiper motor operate normally?

YES: Go to Step 4.

NO: Replace the windshield wiper motor. Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.




STEP 4. Check front-ECU connector A-11X for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is front-ECU connector A-11X in good condition?

YES: Go to Step 5.

NO: Repair or replace the damaged components). Refer to Harness Connector Inspection. Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.










STEP 5. Check the wiring harness between windshield wiper motor connector B-01 (terminal 1) and front-ECU connector A-11X (terminal 27).

NOTE: Also check intermediate connector A-13 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connectors A-13 is damaged, repair or replace the damaged components) as described in Harness Connector Inspection.

Q: Is the wiring harness between windshield wiper motor connector B-01 (terminal 1) and front-ECU connector A-11X (terminal 27) in good condition?

YES: Go to Step 6.

NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.







STEP 6. Check the wiring harness between windshield wiper motor connector B-01 (terminal 2) and front-ECU connector A-11X (terminal 28).

Q: Is the wiring harness between windshield wiper motor connector B-01 (terminal 2) and front-ECU connector A-11X (terminal 28) in good condition?

YES: No action is necessary and testing is complete.

NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the windshield wiper operates normally when the windshield wiper switch is moved to each position.
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