Inspection Procedure 2: The rear wiper does not stop at the specified position.


caution Whenever ECU is replaced, ensure that the input and output signal circuits are normal.








caution Whenever the ECU is replaced, ensure that the input and output circuits are normal.

COMMENTS ON TROUBLE SYMPTOM


The rear wiper motor or the ETACS-ECU may be defective.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Connector check: F-04 rear wiper motor connector


Q. Is the check result normal?
Go to step 2.
Repair the damaged connector.

STEP 2. Check the rear wiper motor.
Refer to .

Q. Is the rear wiper motor normal?
Go to step 3.
Replace the rear wiper motor.

STEP 3. Measure the voltage at F-04 rear wiper motor connector.
(1)Disconnect the connector, and measure the voltage at the wiring harness-side connector.
(2)Measure the voltage between the F-04 rear wiper motor connector terminal No. 4 and the body earth.
OK: Battery voltage

Q. Is the check result normal?
Go to step 5.
Go to step 4.

STEP 4. Check the following connector: F-04 rear wiper motor connector, B-304 ETACS-ECU connector

Q. Is the check result normal?
Go to step 5.
Repair the damaged connector.

STEP 5. Check the wiring harness between F-04 rear wiper motor connector terminal No. 2, 4 and B-304 ETACS-ECU connector terminal No. 14, 11.
note Before the wiring harness check, check the B-319 junction block connector, the C-07, C-08 intermediate connector, and repair if necessary.

  • Check the input line for open or short circuit.

Q. Is the check result normal?
Go to step 6.
Repair the wiring harness.

STEP 6. M.U.T.-III data list

  • Check the input signal related to the rear wiper operation.
  • Electric motor switch: ACC or ON
  • When rear wiper is operating
Item No.
 Item name
 Normal conditions
Item 27
 Rear wiper auto-stop switch
 ON
note Confirm that M.U.T.-III displays from "ON" to "OFF" when rear wiper stops at the predetermined park position.
OK: Normal condition is displayed.

Q. Is the check result normal?
Intermittent malfunction. Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions .)
Replace the ETACS-ECU.




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