Audio And Visual System Steering Pad Switch Circuit

Body Electrical. Camry. Acv40 Gsv40
Audio Visual. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT RADIO RECEIVER

INSPECT STEERING PAD SWITCH ASSEMBLY

INSPECT SPIRAL CABLE

AUDIO AND VISUAL SYSTEM - Steering Pad Switch Circuit


DESCRIPTION

This circuit sends an operation signal from the steering pad switch to the radio receiver.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch.
If there is a short in the circuit, the same condition as that when the switch is continuously depressed occurs.
Therefore, the radio receiver cannot be operated using the steering pad switch, and also the radio receiver itself cannot function.

WIRING DIAGRAM


Camry. Acv40 Gsv40.Audio Visual.Audio And Visual System.Audio And Visual System Steering Pad Switch Circuit


INSPECTION PROCEDURE

NOTICE:
The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (CAMRY_ACV40 RM000000KT1054X.html).
1.INSPECT RADIO RECEIVER


    Camry. Acv40 Gsv40.Audio Visual.Audio And Visual System.Audio And Visual System Steering Pad Switch Circuit

  1. Disconnect the radio receiver connector F8.

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

    Standard resistance:
    Tester connection
    		Condition
    		Specified condition
    SW1 - SWG
    		No switch is pushed
    		Approx. 100 kΩ
    SW1 - SWG
    		SEEK+ switch: push
    		0 to 2.5 Ω
    SW1 - SWG
    		SEEK- switch: push
    		Approx. 0.3 kΩ
    SW1 - SWG
    		VOL+ switch: push
    		Approx. 1 kΩ
    SW1 - SWG
    		VOL- switch: push
    		Approx. 3.1 kΩ
    SW2 - SWG
    		No switch is pushed
    		Approx. 100 kΩ
    SW2 - SWG
    		MODE switch: push
    		0 to 2.5 Ω


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.INSPECT STEERING PAD SWITCH ASSEMBLY

  1. Disconnect the steering pad switch assembly connector.



  1. Measure the resistance according to the values in the table below.


    Camry. Acv40 Gsv40.Audio Visual.Audio And Visual System.Audio And Visual System Steering Pad Switch Circuit


    Standard resistance:

    Tester connection
    		Condition
    		Specified condition
    AU1 - EAU
    		No switch is pushed
    		Approx. 100 kΩ
    AU1 - EAU
    		SEEK+ switch: push
    		0 to 2.5 Ω
    AU1 - EAU
    		SEEK- switch: push
    		Approx. 0.3 kΩ
    AU1 - EAU
    		VOL+ switch: push
    		Approx. 1 kΩ
    AU1 - EAU
    		VOL- switch: push
    		Approx. 3.1 kΩ
    AU2 - EAU
    		No switch is pushed
    		Approx. 100 kΩ
    AU2 - EAU
    		MODE switch: push
    		0 to 2.5 Ω


NG
REPLACE STEERING PAD SWITCH ASSEMBLY
OK


3.INSPECT SPIRAL CABLE


    Camry. Acv40 Gsv40.Audio Visual.Audio And Visual System.Audio And Visual System Steering Pad Switch Circuit

  1. Disconnect the steering pad switch and spiral cable connectors.

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

    Standard resistance:
    Tester connection
    		Spiral Cable Position
    		Specified condition
    EAU - EAU
    		Center
    		Below 1 Ω
    2.5 rotations to the left
    2.5 rotations to the right
    AU1 - AU1
    		Center
    		Below 1 Ω
    2.5 rotations to the left
    2.5 rotations to the right
    AU2 - AU2
    		Center
    		Below 1 Ω
    2.5 rotations to the left
    2.5 rotations to the right
    NOTICE:
    The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the pages shown in the brackets below.
    HINT:
    1. Removal (CAMRY_ACV40 RM000000UWD030X.html)
    2. Installation (CAMRY_ACV40 RM000000UWA030X.html)


NG
REPLACE SPIRAL CABLE
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)