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The LDW-ECU (rain sensor) may be defective or a failure in the lighting control sensor (rain sensor) adaptation is suspected.
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- Malfunction of the LDW-ECU (rain sensor)
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- Lighting control sensor (rain sensor) adaptation failure
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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 LDW camera (rain sensor) is installed to the windshield glass correctly.
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Q.
Is the check result normal?
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After the LDW camera (rain sensor) has been initialised (Refer to GROUP 54A - How to Initialise the LDW Camera (Rain Sensor) ), go to Step 3.
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Install the LDW camera (rain sensor) to the windshield glass correctly (Refer to GROUP 54A - LDW Camera 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 whether the LDW camera (rain sensor) diagnosis code is set.
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Q.
Is the diagnosis code set?
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Diagnose the LDW camera (rain sensor). (Refer to GROUP 54A - Diagnosis Code Chart).
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After the LDW camera (rain sensor) has been initialised, check the LDW camera (rain sensor).
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(1) Windshield glass surface should be dry.
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(2) Pour water to the windshield glass surface where the LDW camera (rain sensor) is installed.
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Q.
Does the windshield wiper operate?
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Operate : Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction).
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Does not operate : Troubleshoot the rain-sensitive wiper function (Refer to Inspection procedure 1 ).
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