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Home >> Mitsubishi >> 2012 >> Eclipse L4-2.4L (4G69) >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Windshield Wiper and Washer >> Inspection Procedure G-7

Inspection Procedure G-7




INSPECTION PROCEDURE G-7: Windshield Wiper and Washer: The windshield washer does not work.

NOTE:
This troubleshooting procedure requires 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 How to Use SWS Monitor."






















CIRCUIT OPERATION

The windshield washer switch sends a signal through the column-ECU (incorporated in the column switch) to the front-ECU. If the column-ECU sends a windshield washer switch "ON" signal to the front-ECU, the front-ECU turns on the relay (incorporated in the front-ECU), thus causing the washer motor to be turned on.

TECHNICAL DESCRIPTION (COMMENT)

If the windshield washer does not work normally, the washer motor, the column switch (windshield wiper and washer switch) or the front-ECU may be defective.

TROUBLESHOOTING HINTS

- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
- The washer motor may be defective
- The column switch 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
- MB991910: M.U.T.-III Main Harness A
- MB991813: SWS Monitor Kit
- MB991806: SWS Monitor Cartridge
- MB991812: SWS Monitor Harness (For Column-ECU)
- MB991822: Probe Harness

STEP 1. Verify the windshield wiper operation.

Q. Does the windshield wiper operate normally?

YES Go to Step 2.
NO Refer to Inspection Procedure G-1 "The windshield wipers do not work at all Inspection Procedure G-1."
STEP 2. Use scan tool MB991958 to select "ECU COMM Check" on the SWS monitor display.

Check the following ECUs:

- Column-ECU
- Front-ECU









(1)
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 MB991910 before connecting special tool MB991812. Be sure to connect special tool MB991806 after turning on special tool MB991824.

Connect the special tool. Refer to "How to connect SWS monitor How to Connect SWS Monitor."
(2)Turn the ignition switch to the "ON" position.
(3)Operate scan tool MB991958 according to the procedure below to display "ECU COMM Check."

.....Select "Interactive Diagnosis."

.....Select "System select."

.....Select "SWS."

.....Select "SWS MONITOR."

.....Select "ECU COMM Check."
(4)Scan tool MB991958 should show "OK" on the "ECU COMM Check" menus for both the
"COLUMN ECU" and the "FRONT ECU" menus.

Q. Are "OK" displayed for the "COLUMN ECU" and "FRONT ECU" menu?

"OK" are displayed for all the items : Go to Step 3.

"NG" is displayed for the "COLUMN ECU" menu : Refer to Inspection Procedure A-2 "Communication with the column switch (column-ECU) is not possible Inspection Procedure A-2."

"NG" is displayed for the "FRONT ECU" menu : Refer to Inspection procedure A-4 "Communication with the front-ECU is not possible Inspection Procedure A-4."

STEP 3. Check the input signal by using "FUNCTION DIAG." menu of the SWS monitor.

Check the input signals from the following switches:

- Ignition switch: ACC
- Windshield washer switch: ON









(1)Operate the scan tool MB991958 according to the procedure below to display "F.WIPER WASH."

.....Select "Interactive Diagnosis."

.....Select "System select."

.....Select "SWS."

.....Select "SWS MONITOR."

.....Select "Function Diag."

.....Select "WIPER."

.....Select "F.WIPER WASH."
(2)Check that normal conditions are displayed for the items described in the table below.





Q. Are normal conditions displayed for "FRONT WASH.SW" and "FRONT ECU ACK"?

Normal conditions displayed for all the items : Go to Step 4.

Normal condition is not displayed for the "FRONT WASH.SW" : Replace the column switch. Verify that the windshield washer works normally.

Normal condition is not displayed for the "FRONT ECU ACK" : Replace the front-ECU. Verify that the windshield washer works normally.

STEP 4. Check windshield and rear washer motor connector A-32 [ECLIPSE]
or windshield washer motor connector A-33 [ECLIPSE SPYDER] for loose, corroded or damaged terminals, or terminals pushed back in the connector.









Q. Is windshield and rear washer motor connector A-32[ ECLIPSE] or windshield washer motor connector A-33[ ECLIPSE SPYDER] in good condition?

YES Go to Step 5.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the windshield washer works normally.

STEP 5. Check the washer motor.









(1)Disconnect windshield and rear washer motor connector A-32 [ECLIPSE] or windshield washer motor connector A-33 [ECLIPSE SPYDER], and check at windshield and rear washer motor connector [ECLIPSE] or windshield washer motor connector [ECLIPSE SPYDER] side.
(2)Fill the windshield washer tank with washer fluid.





(3)When battery voltage is applied between terminals 1 and 2, washer fluid should spray out.

Q. Does the washer motor operate normally?

YES [ECLIPSE SPYDER] : Go to Step 6.

YES [ECLIPSE] : Go to Step 10.

NO : Replace the washer motor. Verify that the windshield washer works normally.

STEP 6. Check the ground circuit to the windshield washer motor. Measure the resistance at the windshield washer motor connector A-33.





(1)Disconnect windshield washer motor connector A-33 and measure the resistance available at the wiring harness side of the connector.





(2)Measure the resistance value between terminal 1 and ground.

- The resistance should be 2 ohms or less.

Q. Is the measured resistance 2 ohms or less?

YES Go to Step 8.

NO Go to Step 7.

STEP 7. Check the wiring harness between windshield washer motor connector A-33 (terminal 1) and ground.

- Check the ground wire for open circuit.





Q. Is the wiring harness between windshield washer motor connector A-33 (terminal 1) and ground 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 washer works normally.

STEP 8. Check front-ECU connector A-14X for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is front-ECU connector A-14X in good condition?

YES Go to Step 9.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the windshield washer works normally.

STEP 9. Check the wiring harness between windshield and rear washer motor connector A-32 (terminal 2) [ECLIPSE] or windshield washer motor connector A-33 (terminal 2) [ECLIPSE SPYDER] and front-ECU connector A-14X (terminal 31).

- Check the communication lines for open circuit and short circuit.













Q. Is the wiring harness between windshield and rear washer motor connector A-32 (terminal 2)[ ECLIPSE] or windshield washer motor connector A-33 (terminal 2)[ ECLIPSE SPYDER] and front-ECU connector A-14X (terminal 31) 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 washer works normally.

STEP 10. Check ETACS-ECU connector C-219 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is ETACS-ECU connector C-219 in good condition?

YES Go to Step 11.

NO Repair or replace the damaged component(s). Harness Connector Inspection. Verify that the windshield washer works normally.

STEP 11. Check the wiring harness between front and rear washer motor connector A-32 (terminal 1) and ETACS-ECU connector C-219 (terminal 23).

- Check the communication lines for open circuit and short circuit.









Q. Is the wiring harness between front and rear washer motor connector A-32 (terminal 1) and ETACS-ECU connector C-219 (terminal 23) 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 washer works normally.

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