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Home >> Toyota >> 2016 >> 4Runner TRD Pro >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Hydraulic Brake Booster) - Diagnostic Codes (C1422-U0073) & Symptom Tests >> VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster) >> DTC C1425: Open in Stop Light Switch Circuit [08/2015 - 08/2019] >> Description

DTC C1425: Open in Stop Light Switch Circuit [08/2015 - 08/2019]: Description

The skid control ECU receives the stop light switch assembly signal and detects the brake pedal operation status.

The skid control ECU has an open detection circuit, which stores this DTC if it detects an open in the stop light input line of the stop light circuit with the stop light switch assembly off (brake pedal not depressed).

DTC No. DTC Detection Condition Trouble Area
C1425 When the IG1 terminal voltage is between 9.5 and 17.4 V and the skid control ECU STPO terminal output is off, an open in the stop light switch circuit continues for 3 seconds or more.
  • Wire harness or connector
  • Stop light switch assembly
  • Master cylinder solenoid (skid control ECU)