Lexus NX: Stop Light Relay Actuator Stuck (C142571)

Lexus NX Service Manual / Vehicle Interior / Pre-collision / Pre-collision System / Stop Light Relay Actuator Stuck (C142571)

DESCRIPTION

The stop light switch assembly and skid control ECU (brake booster with master cylinder assembly) outputs stop light signals. 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 C142571 is output.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C142571

Stop Light Relay Actuator Stuck

Once 3 seconds elapse after turning the power switch on (IG), 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.

Electronically controlled brake system

PROCEDURE

1.

CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM

(a) Check electronically controlled brake system.

Click here

Chassis > ABS/VSC/TRC > Trouble Codes

HINT:

  • When C142571 is detected by the pre-collision system, C1380 may also be detected in the electronically controlled brake system. Therefore, check the electronically controlled brake system first when C142571 is detected.
NEXT

END

READ NEXT:

 Lost Communication With Multi-axis Acceleration Sensor Module Missing Message (U012587,U012687,U012987,U029387)

DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area U012587 Lost Communication With Multi-axis Acceleration Sensor Module Missing Message While the vehicle is bein

 Lost Communication with Cruise Control Front Distance Range Sensor Missing Message (U023587)

DESCRIPTION The forward recognition camera is connected to the millimeter wave radar sensor assembly via the CAN communication line. When the signal from the millimeter wave radar sensor assembly is i

 Lost Communication with Image Processing Module "A" (U023A87)

DESCRIPTION The forward recognition camera is connected to the skid control ECU (brake booster with master cylinder assembly) via the CAN communication line. When the skid control ECU (brake booster w

SEE MORE:

 Drive Motor "B" Position Sensor Angle Malfunction (P1CAE-715,P1CB1-798,P1CB4-799)

DESCRIPTION The inverter with converter assembly (MG ECU) monitors its internal operation and detects malfunctions. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P1CAE-715 Drive Motor "B" Position Sensor Angle Malfunction Rear motor resolver an

 Accumulator Pressure Sensor (C1365)

DESCRIPTION The accumulator pressure sensor is built into the brake actuator (brake booster with master cylinder assembly). The skid control ECU (brake booster with master cylinder assembly) detects the accumulator pressure from the data sent from the accumulator pressure sensor, and then starts and

© 2016-2025 Copyright www.lexunx.com