Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Inspection

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Interior / Door Lock / Back Door Lock / Inspection

INSPECTION

PROCEDURE

1. INSPECT BACK DOOR LOCK ASSEMBLY

*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 battery voltage to the door lock motor and check the operation of the door lock motor.

OK:

Battery Connection

Result

Battery positive (+) → 4 (M+)

Battery negative (-) → 1 (M-)

Latch turns to open-latch position (rotates clockwise)

Battery positive (+) → 1 (M-)

Battery negative (-) → 4 (M+)

Latch turns to full-latch position (rotates counterclockwise)

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)

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

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

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.

*a

Selector Switch

*b

Selector Gear

*c

Component without harness connected

(Back Door Lock Assembly)
    Removal
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    Installation
    INSTALLATION PROCEDURE 1. INSTALL BACK DOOR LOCK ASSEMBLY HINT: Make sure to remove the string before installing a new back door lock assembly. (a) Apply MP grease to the sliding parts of the back doo ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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