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:

Tester Connection

Condition

Specified Condition

3 (NVI) - 8 (NVS)

Vehicle sound switch on

Below 1 Ω

Vehicle sound switch off

10 kΩ or higher

If the result is not as specified, replace the vehicle sound switch.

*a

Component without harness connected

(Vehicle Sound Switch)

*b

Switch Indicator

(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.

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