Lexus NX: Inspection
INSPECTION
PROCEDURE
1. INSPECT VEHICLE SOUND SWITCH
| (a) Check the vehicle sound switch on/off operation (1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the vehicle sound switch. |
|
(b) Inspect the switch indicator
(1) Apply auxiliary battery voltage to the vehicle sound switch connector and check that the switch indicator comes on.
OK:
| Measurement Condition | Condition | Specified Condition |
|---|---|---|
| Auxiliary battery positive (+) → 8 (NVS) Auxiliary battery negative (-) → 4 (E) | Vehicle sound switch on | Switch indicator comes on |
If the result is not as specified, replace the vehicle sound switch.
(c) Check the volume control function
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 6 (NVM) - 8 (NVS) | Vehicle sound switch volume set to maximum | 4.08 to 2.72 kΩ |
| Vehicle sound switch volume set to minimum | 0.42 to 0.28 kΩ |
If the result is not as specified, replace the vehicle sound switch.
(d) Inspect the switch illumination
(1) Apply auxiliary battery voltage to the vehicle sound switch connector and check that the switch illumination comes on.
OK:
| Measurement Condition | Specified Condition |
|---|---|
| Auxiliary battery positive (+) → 7 (ILL+) Auxiliary battery negative (-) → 2 (ILL-) | Switch illumination comes on |
If the result is not as specified, replace the vehicle sound switch.
READ NEXT:
Installation
INSTALLATION PROCEDURE 1. INSTALL VEHICLE SOUND SWITCH (a) Attach the 2 claws to install the vehicle sound switch. 2. INSTALL LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL Click here 3. INSTALL NO. 1
Parts Location
PARTS LOCATION ILLUSTRATION *1 VEHICLE SOUND SWITCH *2 STEREO COMPONENT EQUALIZER ASSEMBLY *3 NO. 1 SPEAKER ASSEMBLY WITH BOX *4 HYBRID VEHICLE CONTROL ECU *5 MAIN BODY ECU (
SEE MORE:
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.
PROCEDURE 1. INSTALL DOOR SIDE AIRBAG SENSOR LH (a) Check that the power switch is off. (b) Check that the cable is disconnected from the negative (-) aux
Power Source Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) receives IG signals and supplies power to the headlight ECU sub-assembly via the H-LP relay. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
The lighting system (for Triple Beam Headlight) uses the LIN communication system and CAN communi
