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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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.
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Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be dis
Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. INSTALL SIDE AIRBAG SENSOR ASSEMBLY LH (a) Check that the power switch is off. (b) Check that the cable is disconnected from the negative (-)
