Lexus NX: Inspection

INSPECTION

PROCEDURE

1. INSPECT HEADUP DISPLAY SWITCH ASSEMBLY

*1

HUD Switch

*2

TILT Switch

*3

RHEOSTAT Switch

*4

DISP Switch

*a

Component without harness connected

(Headup Display Switch Assembly)

(a) Check the resistance.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

12 (ILU) - 6 (CH)

HUD switch off (Not pushed)

100 kΩ

10 (ILD) - 6 (CH)

100 kΩ

12 (ILU) - 6 (CH)

HUD switch on (Pushed)

Below 1 Ω

10 (ILD) - 6 (CH)

100 kΩ

12 (ILU) - 6 (CH)

TILT switch (UP) on (Pushed)

100 kΩ

10 (ILD) - 6 (CH)

3210 Ω

12 (ILU) - 6 (CH)

TILT switch off (Not pushed)

100 kΩ

10 (ILD) - 6 (CH)

100 kΩ

12 (ILU) - 6 (CH)

TILT switch (DOWN) on (Pushed)

100 kΩ

10 (ILD) - 6 (CH)

1010 Ω

12 (ILU) - 6 (CH)

RHEOSTAT switch (ILL UP) on (Pushed)

100 kΩ

10 (ILD) - 6 (CH)

330 Ω

12 (ILU) - 6 (CH)

RHEOSTAT switch off (Not pushed)

100 kΩ

10 (ILD) - 6 (CH)

100 kΩ

12 (ILU) - 6 (CH)

RHEOSTAT switch (ILL DOWN) on (Pushed)

100 kΩ

10 (ILD) - 6 (CH)

Below 1 Ω

12 (ILU) - 6 (CH)

DISP switch off (Not pushed)

100 kΩ

10 (ILD) - 6 (CH)

100 kΩ

12 (ILU) - 6 (CH)

DISP switch on (Pushed)

330 Ω

10 (ILD) - 6 (CH)

100 kΩ

If the result is not as specified, replace the headup display switch assembly.

(b) Check the illumination.

Apply battery voltage to the connector and check the illumination condition.

OK:

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 1 (ILL+)

Battery negative (-) → Terminal 8 (ILL-)

Illuminates

If the result is not as specified, replace the headup display switch assembly.

*a

Component without harness connected

(Headup Display Switch Assembly)

READ NEXT:

 Installation

INSTALLATION PROCEDURE 1. INSTALL HEADUP DISPLAY SWITCH ASSEMBLY (a) Attach the 4 claws to install the headup display switch assembly. 2. INSTALL NO. 1 SWITCH HOLE BASE Click here 3

 Headup Display System

 Parts Location

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