Lexus NX: Inspection

INSPECTION

PROCEDURE

1. INSPECT BACK DOOR LOCK ASSEMBLY (w/o Power Back Door)

(a) Check the operation of the door lock motor.

(1) Move the back door lock assembly to the lock position.

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

OK:

Measurement Condition

Specified Condition

Auxiliary battery positive (+) → 1 (ACT+)

Auxiliary battery negative (-) → 2 (ACT-)

Unlock

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

*a

Unlock

*b

Lock

*c

Component without harness connected

(Back Door Lock Assembly)

(b) Check the operation of the door courtesy switch.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (D+) - 2 (ACT-)

Lock

10 kΩ or higher

3 (D+) - 2 (ACT-)

Unlock

Below 1 Ω

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

2. INSPECT BACK DOOR LOCK ASSEMBLY (w/ Power Back Door)

*a

Clockwise

*b

Counterclockwise

*c

Over-latch

*d

Full-latch

*e

Half-latch

*f

Open-latch

*g

Component without harness connected

(Back Door Lock Assembly)

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

OK:

Measurement Condition

Specified Condition

Auxiliary battery positive (+) → 1 (M+)

Auxiliary battery negative (-) → 4 (M-)

Latch turns to full-latch position (clockwise rotation)

Auxiliary battery positive (+) → 4 (M-)

Auxiliary battery negative (-) → 1 (M+)

Latch turns to open-latch position (counterclockwise rotation)

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

(b) Check the operation of the latch switch.

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

Standard Resistance

Tester Connection

Condition

Specified Condition

3 (CLS) - 7 (E)

Open-latch

Below 1 Ω

3 (CLS) - 7 (E)

Open-latch → Half-latch

Below 1 Ω → 10 kΩ or higher

3 (CLS) - 7 (E)

Half-latch

10 kΩ or higher

3 (CLS) - 7 (E)

Full-latch

10 kΩ or higher

3 (CLS) - 7 (E)

Over-latch

10 kΩ or higher → Below 1 Ω → 10 kΩ or higher

Standard Resistance

Tester Connection

Condition

Specified Condition

3 (CLS) - 7 (E)

Full-latch

10 kΩ or higher

3 (CLS) - 7 (E)

Half-latch

10 kΩ or higher

3 (CLS) - 7 (E)

Half-latch → Open-latch

10 kΩ or higher → Below 1 Ω

3 (CLS) - 7 (E)

Open-latch

Below 1 Ω

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

(c) Check the operation of the pawl switch.

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

Standard Resistance

Tester Connection

Condition

Specified Condition

2 (FSW) - 7 (E)

Open-latch

10 kΩ or higher

2 (FSW) - 7 (E)

Open-latch → Half-latch

10 kΩ or higher → Below 1 Ω → 10 kΩ or higher

2 (FSW) - 7 (E)

Half-latch

10 kΩ or higher

2 (FSW) - 7 (E)

Half-latch → Full-latch

10 kΩ or higher → Below 1 Ω → 10 kΩ or higher

2 (FSW) - 7 (E)

Full-latch

10 kΩ or higher

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

(d) Check the operation of the back door courtesy switch.

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

Standard Resistance

Tester Connection

Condition

Specified Condition

8 (CTY) - 7 (E)

Open-latch

Below 1 Ω

8 (CTY) - 7 (E)

Half-latch

Below 1 Ω

8 (CTY) - 7 (E)

Half-latch → Full-latch

Below 1 Ω → 10 kΩ or higher

8 (CTY) - 7 (E)

Full-latch

10 kΩ or higher

8 (CTY) - 7 (E)

Over-latch

10 kΩ or higher

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

(e) Check the operation of the selector switch.

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

Standard Resistance

Tester Connection

Condition

Specified Condition

6 (OPN) - 7 (E)

Selector Switch ON

Below 1 Ω

6 (OPN) - 7 (E)

Selector Switch OFF

10 kΩ or higher

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

*1

Selector Switch

*2

Selector Gear

*a

Component without harness connected

(Back Door Lock Assembly)

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