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:
If the result is not as specified, replace the 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 |
| 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
If the result is not as specified, replace the back door lock assembly. |
|
READ NEXT:
Installation
INSTALLATION PROCEDURE 1. INSTALL BACK DOOR LOCK ASSEMBLY (w/ Power Back Door) NOTICE:
When installing a new back door lock assembly, if there is any tape stuck to it, remove the tape.
When insta
Components
COMPONENTS ILLUSTRATION *1 DECK FLOOR BOX LH *2 NO. 3 DECK BOARD SUB-ASSEMBLY *3 REAR DECK FLOOR BOX *4 NEGATIVE AUXILIARY BATTERY TERMINAL N*m (kgf*cm, ft.*lbf): Specified
SEE MORE:
System Diagram
SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Skid control ECU (Brake booster with master cylinder assembly) Power steering ECU assembly
Target steering angle signal
Wheel speed signal
Vehicle speed signal
CAN communicatio
High Beam Headlight Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the high beam headlights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
Recognition code registration is necessary when replacin
