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The lighting control sensor, the harness connector, or the ETACS-ECU may be defective.
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- Malfunction of the lighting control sensor
- Malfunction of ETACS-ECU
- Damaged wiring harness and connectors
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Visually check the presence of scratches or air bubbles (diameter of 5 mm or more) on the windshield to which the lighting control sensor is installed.
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Q.
Is the check result normal?
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Replace the windshield (Refer to GROUP 42A -
Windshield Removal and Installation ).
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Check that the windshield wipers work normally.
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Q.
Is the check result normal?
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Refer to trouble symptom chart .
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Check if an ETACS-related diagnosis code is set.
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Q.
Is the diagnosis code set?
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Diagnose the ETACS-ECU. Refer to GROUP 54A -
ETACS .
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Check if a lighting control sensor-related diagnosis code is set.
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Q.
Is the diagnosis code set?
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Diagnose the lighting control sensor. (Refer to GROUP 54A -
Diagnosis Code Chart .)
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Check if diagnosis code is set in the LIN.
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Q.
Is the diagnosis code set?
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Refer to GROUP 54B -
Diagnosis Code Chart .
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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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