Lexus NX: Inspection

INSPECTION

PROCEDURE

1. INSPECT FRONT DOOR LOCK ASSEMBLY LH

(a) Check the door lock motor operation.

(1) Apply auxiliary battery voltage to the motor connector and check the operation of the door lock motor.

OK:

Measurement Condition

Specified Condition

Auxiliary battery positive (+) → Terminal 4 (L)

Auxiliary battery negative (-) → Terminal 1 (UL)

Lock

Auxiliary battery positive (+) → Terminal 1 (UL)

Auxiliary battery negative (-) → Terminal 4 (L)

Unlock

If the result is not as specified, replace the front door lock assembly LH.

*a

Unlock

*b

Lock

*c

Component without harness connected

(Front Door Lock Assembly LH)

(b) Check the operation of the door unlock detection switch.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 (E) - 8 (LSSR)

Lock

10 kΩ or higher

Unlock

Below 1 Ω

If the result is not as specified, replace the front door lock assembly LH.

(c) Check the resistance of the lock and unlock switch.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

9 (L) - 7 (E)

Lock

Below 1 Ω

9 (L) - 7 (E)

10 (UL) - 7 (E)

Neutral

10 kΩ or higher

10 (UL) - 7 (E)

Unlock

Below 1 Ω

If the result is not as specified, replace the front door lock assembly LH.

*a

Unlock

*b

Neutral

*c

Lock

*d

Component without harness connected

(Front Door Lock Assembly LH)

2. INSPECT FRONT DOOR LOCK ASSEMBLY RH

(a) Check the door lock motor operation.

(1) Apply auxiliary battery voltage to the motor connector and check the operation of the door lock motor.

OK:

Measurement Condition

Specified Condition

Auxiliary battery positive (+) → 4 (L)

Auxiliary battery negative (-) → 1 (UL)

Lock

Auxiliary battery positive (+) → 1 (UL)

Auxiliary battery negative (-) → 4 (L)

Unlock

If the result is not as specified, replace the front door lock assembly RH.

*a

Unlock

*b

Lock

*c

Component without harness connected

(Front Door Lock Assembly RH)

(b) Check the operation of the door unlock detection switch.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 (LSSR) - 8 (E)

Lock

10 kΩ or higher

7 (LSSR) - 8 (E)

Unlock

Below 1 Ω

If the result is not as specified, replace the front door lock assembly RH.

READ NEXT:

 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. A bolt without a torque specification is shown in the s

 Power Door Lock Control System

 Precaution

PRECAUTION PRECAUTIONS WHEN USING TECHSTREAM (a) When using the Techstream with the vehicle power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at interval

SEE MORE:

 CAN Communication Failure (Message Registry) (U1000)

DESCRIPTION When the clearance warning ECU assembly determines that the CAN communication circuit is malfunctioning during self-diagnosis, DTC U1000 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area U1000 CAN Communication Failure (Message Registry) CAN communic

 Parts Location

PARTS LOCATION ILLUSTRATION *1 FRONT WIPER DEICER RELAY *2 AIR CONDITIONING AMPLIFIER ASSEMBLY *3 MULTI-DISPLAY ASSEMBLY *4 RADIO RECEIVER ASSEMBLY *5 WINDSHIELD GLASS - WINDSHIELD DEICER WIRE *6 NO. 2 ENGINE ROOM RELAY BLOCK *7 DEICER FUSE *8 ECU-B NO.2 FUSE

© 2016-2026 Copyright www.lexunx.com