Lexus NX: Inspection

INSPECTION

PROCEDURE

1. INSPECT STEERING PAD SWITCH ASSEMBLY

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

*A

w/ Lane Departure Alert System

-

-

*1

SEEK+

*2

SEEK-

*3

VOL+

*4

VOL-

*5

MODE

*6

VOICE

*7

OFF HOOK

*8

ON HOOK

*9

UP

*10

DOWN

*11

LEFT

*12

RIGHT

*13

ENTER

*14

TOP

*15

BACK

*16

ACC

*17

LDA

-

-

*a

Component without harness connected

(Steering Pad Switch Assembly)

-

-

Standard Resistance:

Tester Connection

Condition

Specified Condition

z3-11 (AU1) - z3-8 (EAU)

No switch pushed

95 to 105 kΩ

SEEK+ switch pushed

Below 2.5 Ω

SEEK- switch pushed

313 to 345 Ω

Volume+ switch pushed

950 to 1050 Ω

Volume- switch pushed

2955 to 3265 Ω

z3-10 (AU2) - z3-8 (EAU)

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On hook switch pushed

313 to 345 Ω

Off hook switch pushed

950 to 1050 Ω

Voice switch pushed

2955 to 3265 Ω

z3-3 (+DP2) - z3-8 (EAU)

No switch pushed

95 to 105 kΩ

Left switch pushed

Below 2.5 Ω

Up switch pushed

313 to 345 Ω

Down switch pushed

950 to 1050 Ω

Right switch pushed

2955 to 3265 Ω

z3-2 (+DP) - z3-8 (EAU)

No switch pushed

95 to 105 kΩ

Enter switch pushed

Below 2.5 Ω

Top switch pushed

313 to 345 Ω

Back switch pushed

950 to 1050 Ω

z3-4 (DIST)* - z3-7 (ECC)

No switch pushed

1 MΩ or higher

Distance control switch pushed

Below 2.5 Ω

Lane departure alert main switch pushed

228 to 252 Ω

z3-1 (HO) - A-1 (HO)

Always

Below 2.5 Ω

z3-7 (ECC) - z12-1 (ECC)

Always

Below 2.5 Ω

z3-12 (CCS) - z12-3 (CCS)

Always

Below 2.5 Ω

  • *: w/ Lane Departure Alert System

HINT:

If the result is not as specified, replace the steering pad switch assembly.

(b) Check the illumination.

(1) Connect a battery positive (+) lead to terminal z3-5 (IL+2) and a negative (-) lead to terminal z3-9 (ILL-) of the steering pad switch assembly connector.

(2) Check that the switch illumination comes on.

OK:

Steering pad switch illumination comes on.

HINT:

If the result is not as specified, replace the steering pad switch assembly.

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