LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2021 >> RC F Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System - Diagnostic Codes (4 Of 5) >> Vehicle Stability Control System >> DTC C1425: Open in Stop Light Switch Circuit [09/2014 - 11/2017] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C1425: Open in Stop Light Switch Circuit [09/2014 - 11/2017]: Description

The skid control ECU (brake actuator assembly) receives stop light switch signals and uses them to determine whether or not the brakes are applied.

The skid control ECU (brake actuator assembly) has a detection circuit that it uses to detect an open in the stop light input line.

If the skid control ECU (brake actuator assembly) detects an open in this circuit, it will store this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1425 Open in Stop Light Switch Circuit When IG1 terminal voltage is 9.5 V or more, an open in the stop light switch assembly input line continues for 0.3 seconds or more.
  • Wire harness or connector
  • Stop light switch assembly
  • Skid control ECU (brake actuator assembly)