Stop Light Switch Circuit Malfunction

DTC P0571 Stop Light Switch Circuit Malfunction

DESCRIPTION

DTC Detection Condition:

The ECM receives the brake demand signal from the cruise control ECU (distance control ECU) and transmits it to the skid control ECU.

The skid control ECU receives a signal from the ECM and operates the brake actuator.

The skid control ECU operates the brake actuator and illuminations the stop light by operating the BRK relay at the same time.

Wiring Diagram:

INSPECTION PROCEDURE

Step 1-2:

Step 3: