Lexus NX: 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.
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Chassis > ABS/VSC/TRC > Trouble Codes
HINT:
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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.
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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:
REMOVAL CAUTION / NOTICE / HINT NOTICE: While the auxiliary battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or any door courtesy switch turns on. Therefore, when servicing the brake system components, do not operate the brak
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
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