INSPECTION PROCEDURE 1. INSPECT TRAILER BRAKE CONTROL SWITCH
(b) Check that the LED illuminates.
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Toyota Tundra Service Manual > Pre-collision System: Brake Control Signal Mismatch (C1A69)
DESCRIPTION The skid control ECU (brake actuator assembly) sends signals to the millimeter wave radar sensor assembly according to the brake control status. If the millimeter wave radar sensor assembly receives a vehicle stability control system malfunction signal from the skid control ECU (brake ac ...