Lexus NX: Automatic High Beam Main Switch

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Automatic High Beam Main Switch

Inspection

INSPECTION

PROCEDURE

1. INSPECT COMBINATION SWITCH ASSEMBLY (AUTOMATIC HIGH BEAM MAIN SWITCH)

(a) Remove the combination switch assembly.

Click here

(b) Inspect the automatic high beam main switch.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

I33-1 (+B) - I33-10 (E)

Automatic high beam main switch off

10 kΩ or higher

Automatic high beam main switch on

Below 1 Ω

If the result is not as specified, replace the combination switch assembly.

*a

Component without harness connected

(Auto High Beam Switch)

(c) Check the illumination.

(1) Apply auxiliary battery voltage to the connector and check the illumination conditions.

OK:

Measurement Condition

Specified Condition

Auxiliary battery positive (+) → I33-7 (ILL+)

Auxiliary battery negative (-) → I33-12 (ILL-)

Illuminates

If the result is not as specified, replace the combination switch assembly.

READ NEXT:

 Automatic High Beam System

 Precaution

PRECAUTION HANDLING PRECAUTIONS FOR FORWARD RECOGNITION CAMERA (a) The automatic high beam system uses the forward recognition camera. For precautions related to the forward recognition camera, refer

 Parts Location

PARTS LOCATION ILLUSTRATION *1 FORWARD RECOGNITION CAMERA *2 BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU) *3 HEADLIGHT ASSEMBLY LH *4 HEADLIGHT ASSEMBLY RH *5

SEE MORE:

 Cornering Light Circuit

DESCRIPTION The illumination of the fog light assembly (cornering light) is controlled by the headlight ECU sub-assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: The light system (for Triple Beam Headlight) uses the CAN communication system and multiplex communication system (LIN). First

 Removal

REMOVAL 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. REMOVE SIDE MUDGUARD SUB-ASSEMBLY LH HINT: When removing the side mudguard sub-assembly LH, if the No. 3 moulding tape (double-sided tape) is diff

© 2016-2025 Copyright www.lexunx.com