Toyota CH-R Service Manual: 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

*B

w/ Voice Switch

*C

w/ Microphone

-

-

*a

Component without harness connected

(Steering Pad Switch Assembly)

*b

Seek+

*c

Seek-

*d

Volume+

*e

Volume-

*f

MODE

*g

Voice

*h

Off Hook

*i

On Hook

*j

Up

*k

Down

*l

Left

*m

Right

*n

Enter

*o

Back

*p

Distance Control

*q

TRIP

*r

Lane Departure Alert

Standard Resistance:

Tester Connection

Condition

Specified Condition

z1-11 (AU1) - z1-8 (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

z1-10 (AU2) - z1-8 (EAU)

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On hook switch pushed*1

313 to 345 Ω

Off hook switch pushed*1

950 to 1050 Ω

Voice switch pushed*2

2955 to 3265 Ω

z1-3 (+DP2) - z1-8 (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

z1-2 (+DP) - z1-8 (EAU)

No switch pushed

95 to 105 kΩ

Enter switch pushed

Below 2.5 Ω

TRIP switch pushed

313 to 345 Ω

Back switch pushed

950 to 1050 Ω

z1-4 (DIST) - z1-7 (ECC)*3

No switch pushed

1 MΩ or higher

Distance control switch pushed

Below 2.5 Ω

Lane departure alert switch pushed

228 to 252 Ω

z1-1 (HO) - A-1(HO)

Always

Below 2.5 Ω

  • *1: w/ Microphone
  • *2: w/ Voice Switch
  • *3: w/ Lane Departure Alert System

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

(b) Check that the illumination illuminates.

(1) Apply battery voltage between the terminals of the switch, and check the illumination condition of the steering pad switch assembly.

Standard:

Measurement Condition

Specified Condition

Battery positive (+) → 5 (IL+2)

Battery negative (-) → 6 (IL-2)

Illuminates

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

*a

Component without harness connected

(Steering Pad Switch Assembly)

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