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Home >> Lexus >> 2012 >> LS 460L RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Window Defogger System (Diagnostics & Symptom Tests)) >> Window Defogger System >> Symptom Tests >> Rear Window Defogger System does not Operate >> Description

Rear Window Defogger System does not Operate: Description

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When the rear window defogger switch turns ON, a rear defogger activation request signal from the air conditioning amplifier is sent via the CAN line to the front light ECU. Then the front light ECU operates the rear window defogger.

HINT: 

This circuit uses the CAN communication line. Before performing the inspection, check that the CAN communication system is functioning normally.

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