COMPONENTS
ILLUSTRATION

RemovalBrake Switch "A" Circuit Open (P057113)
DESCRIPTION
When the brakes are applied by the dynamic radar cruise control system, the skid
control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2
operates the stop light switch assembly (stop light relay) to illuminate the stop
lights.
If the ECM receives ...
Data List / Active Test
DATA LIST / ACTIVE TEST
HINT:
By accessing the Data List displayed on the Techstream, you can perform such
functions as reading the values of switches and sensors without removing any parts.
Reading the Data List is the first step of troubleshooting and is one method to
shorten labor time.
...
Brake System Malfunction (C1A50)
DESCRIPTION
When the pre-collision system is operating, the millimeter wave radar sensor
assembly sends brake control signals to the skid control ECU (master cylinder solenoid)*1
or skid control ECU (brake actuator assembly)*2.
If the millimeter wave radar sensor assembly receives a vehicle st ...