Toyota Tacoma (2015-2018) Service Manual: Brake Switch "A" Circuit Open (P057113)

Toyota Tacoma (2015-2018) Service Manual / Cruise Control / Dynamic Radar Cruise Control System(for 2gr-fks) / Brake 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 a stop light switch control relay malfunction signal from the skid control ECU (brake actuator assembly), DTC P057113 is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL
P057113	Brake Switch "A" Circuit Open	While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the ECM detects the stop light switch control relay malfunction signal from the skid control ECU (master cylinder solenoid)1 or skid control ECU (brake actuator assembly)2 for approximately 0.5 seconds or more.	Pre-collision system	Does not come on

*1: for Hydraulic Brake Booster
*2: for Vacuum Brake Booster

CAUTION / NOTICE / HINT

HINT:

When DTC P057113 is stored by the dynamic radar cruise control system, DTC C1A4B is stored by the pre-collision system. Therefore, if DTC P057113 is stored, inspect the pre-collision system first.

PROCEDURE

1.	GO TO PRE-COLLISION SYSTEM

Click here

END

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