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Home >> Toyota >> 2017 >> 4Runner TRD Pro >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Vacuum Brake Booster) - Diagnostic Codes (B1380-U0074) & Symptom Tests >> VEHICLE STABILITY CONTROL SYSTEM (for Vacuum 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 (brake actuator assembly) detects the brake operating conditions through a signal transmitted by the stop light switch assembly.

DTC No. DTC Detection Condition Trouble Area
C1425 When the IG1 terminal voltage is between 9.5 and 17.4 V, an open STP terminal circuit continues for 3 seconds or more.
  • STP terminal circuit
  • Stop light control ECU assembly
  • Skid control ECU (Brake actuator assembly)