Lexus NX: Steering Position Sensor Malfunction (B2414)

DESCRIPTION

The headlight ECU sub-assembly LH receives steering angle signals from the steering sensor.

The headlight ECU sub-assembly LH outputs DTC B2414.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2414

Steering Position Sensor Malfunction

Steering angle sensor malfunction

  • Headlight ECU sub-assembly LH
  • Steering sensor

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this DTC.

    Click here

  • After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

    Click here

  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

    Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > AFS > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > AFS > Trouble Codes

OK:

DTC B2414 output does not occur.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

REPLACE STEERING SENSOR

(a) Temporarily replace the steering sensor with a new or normally functioning one.

Click here

NEXT

3.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > AFS > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > AFS > Trouble Codes

OK:

DTC B2414 output does not occur.

OK

END (STEERING SENSOR WAS DEFECTIVE)

NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

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