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The ETACS-ECU calculates the intermittent wiper interval according to the vehicle speed
signal which is sent by the ABS-ECU <Vehicles without ASC> or ASC-ECU <Vehicles with ASC>.
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If the intermittent wiper interval does not depend on the vehicle speed, the input circuit
of the vehicle speed signal (combination meter) and the ETACS-ECU may be defective. Alternatively, the
vehicle speed-dependent wiper may be set to "disabled" by using the customise function.
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- Defective combination meter
- Malfunction of ETACS-ECU
- Damaged wiring harness and connectors
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Check that the windshield intermittent wiper interval can be adjusted by operating the
windshield intermittent wiper volume control.
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Q.
Is the check result normal?
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Refer to Inspection Procedure 5 "The windshield intermittent wiper interval cannot
be adjusted by operating the windshield intermittent wiper volume control" .
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Use the ETACS customise function to confirm that "FRONT WIPER OPERATION" is set to "VEHICLE
SPEED DEPENDENT".
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Q.
Is the check result normal?
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Use the ETACS customise function to set "FRONT WIPER OPERATION" to "VEHICLE SPEED DEPENDENT"
(Refer to ).
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(1)Connect the M.U.T.-III to the diagnosis connector.
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(2)Use the M.U.T.-III to enter simulated vehicle speed.
- Item No.1: Speedometer (Refer to .)
OK: The speedometer shows that simulated vehicle speed.
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Q.
Is the check result normal?
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Perform the troubleshooting to the speedometer (Refer to GROUP 54A -
Combination
Meter, Inspection Procedure 5 "Speedometer does not work." Refer to .)
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Check that the intermittent wiper interval depends on the vehicle speed.
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunction ).
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