INSPECTION PROCEDURE
2: The rear wiper does not stop at the specified park position.
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Whenever ECU is
replaced, ensure that the input and output signal circuits are normal.
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COMMENTS ON TROUBLE SYMPTOM
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The rear wiper motor or the ETACS-ECU may be defective.
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- Malfunction of the rear wiper motor
- Malfunction of the ETACS-ECU
- Damaged wiring harness and connectors
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STEP 1. M.U.T.-III data list
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Check the ETACS-related data list (Refer to GROUP 54A - ETACS, Service Data Reference
Table  )
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- Set the ignition switch to the ACC position.
- Activate the rear wiper.
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Item No.
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Item name
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Normal conditions
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27
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Rear wiper automatic stop switch
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Turns ON when the wiper are activated from the stopped state.
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OK: Normal condition is displayed.
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Q.
Is the check result normal?
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 Go to Step 6.
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 Go to Step 2.
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STEP 2. Check the rear wiper motor.
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Check that the rear wiper motor works normally (Refer to ).
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Q.
Is the rear wiper motor normal?
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Go to Step 3.
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Replace the rear wiper motor assembly (Refer to ).
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STEP 3. Measure the voltage at rear wiper motor connector terminal
where ignition switch (ACC) is connected.
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(1)Disconnect the connector, and measure the voltage at the wiring harness side.
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(2)Set the ignition switch to the ACC position.
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(3)Measure the voltage between the rear wiper motor connector terminal where ignition
switch (ACC) is connected and the body earth.
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 5.
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Go to Step 4.
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STEP 4. Check of open, short circuit in power supply line between
rear wiper motor connector and ignition switch (ACC).
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Q.
Is the check result normal?
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The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Use
Troubleshooting/inspection Service Points - How to Cope with Intermittent
Malfunction ).
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Repair the connector(s) or wiring harness
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STEP 5. Check of open, short circuit in R/WIP-AS line between rear
wiper motor connector and ETACS-ECU connector.
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Q.
Is the check result normal?
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Go to Step 6.
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Repair the connector(s) or wiring harness
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Check that the rear wiper stop at the specified park position.
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Q.
Is the check result normal?
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The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Use
Troubleshooting/inspection Service Points - How to Cope with Intermittent
Malfunction ).
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS, ETACS-ECU ).
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