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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 >> Input Signal Procedures >> Inspection Procedure N-9

Inspection Procedure N-9




INSPECTION PROCEDURE N-9: ETACS-ECU does not receive an auto-stop signal from the rear wiper motor.


















CIRCUIT OPERATION

The ETACS-ECU makes the rear wiper stop at the predetermined park position according to the auto-stop signal from the rear wiper motor.

TECHNICAL DESCRIPTION (COMMENT)

If this signal is not normal, the rear wiper does not stop at the predetermined park position.

TROUBLESHOOTING HINTS

- The rear wiper motor may be defective
- The ETACS-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tool:

- MB991223: Test Harness Set
- MB992006: Extra Fine Probe

STEP 1. Check rear wiper motor connector F-03 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is rear wiper motor connector F-03 in good condition?

YES Go to Step 2.

NO Repair or replace the damaged component(s). Harness Connector Inspection. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

STEP 2. Check the rear wiper.

Q. Does the rear wiper motor operate (however, the rear wiper does not stop at the predetermined park position)?

YES Go to Step 3.
NO Refer to Inspection Procedure H-1 "Rear wiper does not work at all Inspection Procedure H-1."
STEP 3. Check the rear wiper motor.





(1)Disconnect rear wiper motor connector F-03.





(2)While the rear wiper motor is running, disconnect the battery to stop the motor.
(3)When the battery is connected as shown, the motor should run again and stop at the predetermined park position.

Q. Does the rear wiper motor operate normally?

YES Go to Step 4.

NO Replace the rear wiper motor. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

STEP 4. Measure at rear wiper motor connector F-03 by backprobing to check the ignition switch (ACC) line of the power supply to the rear wiper motor.





(1)Do not disconnect rear wiper motor connector F-03 and measure the voltage available at the wiring harness side of the connector.
(2)Turn the ignition switch to the "ACC" position.





(3)Measure the voltage between terminal 4 and ground by backprobing.

- The voltage should equal approximately 12 volts (battery positive voltage).

Q. Is the measured voltage approximately 12 volts (battery positive voltage)?

YES Go to Step 6.

NO Go to Step 5.

STEP 5. Check the wiring harness between rear wiper motor connector F-03 (terminal 4) and the ignition switch (ACC).

- Check the power supply line for open circuit and short circuit.









NOTE:
Also check intermediate connector F-02, junction block connectors C-202 and C-208 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector F-02, junction block connectors C-202 or C-208 are damaged, Repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between rear wiper motor connector F-03 (terminal 4) and the ignition switch (ACC) in good condition?

YES Inspection Procedure.

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. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

STEP 6. Check ETACS-ECU connector C-217 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is ETACS-ECU connector C-217 in good condition?

YES Go to Step 7.

NO Repair or replace the damaged component(s). Harness Connector Inspection. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

STEP 7. Check the wiring harness between rear wiper motor connector F-03 (terminal 3) and ETACS-ECU connector C-217 (terminal 17).

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













NOTE:
Also check intermediate connector F-02 and junction block connector C-208 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector F-02 or junction block connector C-208 are damaged, Repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between rear wiper motor connector F-03 (terminal 3) and ETACS-ECU connector C-217 (terminal 17) in good condition?

YES Replace the ETACS-ECU. When the ETACS-ECU is replaced, register the encrypted code. Encrypted Code Registration Criteria Table. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

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. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

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