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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Pre-Collision System - Diagnostic Codes) >> Pre-Collision System >> DTC C1425-71: Stop Light Relay Actuator Stuck [08/2021 - ] >> Description

DTC C1425-71: Stop Light Relay Actuator Stuck [08/2021 - ]: Description

WARNING: This page is about a different car, the 2022 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

for HV Model: 

  1. The skid control ECU (brake booster with master cylinder assembly) sends a stop light operation request signal to the stop light control relay (stop light switch assembly). When the skid control ECU (brake booster with master cylinder assembly) detects a malfunction relating to the stop light circuit, the forward recognition camera is notified via CAN communication, and C1425-71 is output.

for Gasoline Model: 

  1. The skid control ECU (brake actuator assembly) sends a stop light operation request signal to the stop light control relay (stop light switch assembly). When the skid control ECU (brake actuator assembly) detects a malfunction relating to the stop light circuit, the forward recognition camera is notified via CAN communication, and C1425-71 is output.
DTC No. Detection Item DTC Detection Condition Trouble Area
C1425-71 Stop Light Relay Actuator Stuck for HV Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the system receives a stop light circuit malfunction signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.

for Gasoline Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the system receives a stop light circuit malfunction signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more.
Electronically controlled brake system