Audio And Visual System (W/O Stereo Component Amplifier) Steering Pad Switch Circuit

Audio Visual Telematics. Land Cruiser. Urj200, 202 Grj200 Vdj200
Audio Video. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SPIRAL CABLE)

INSPECT SPIRAL CABLE SUB-ASSEMBLY

INSPECT STEERING PAD SWITCH ASSEMBLY

AUDIO AND VISUAL SYSTEM (w/o Stereo Component Amplifier) - Steering Pad Switch Circuit


DESCRIPTION

This circuit sends an operation signal from the steering pad switch to the radio receiver.
If there is a short in the circuit, the resulting condition is the same as if the switch were continuously depressed.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Audio Video.Audio And Visual System (For Radio Receiver Type).Audio And Visual System (W/O Stereo Component Amplifier) Steering Pad Switch Circuit


INSPECTION PROCEDURE

CAUTION:
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 Precaution for the SRS (Click here).
1.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SPIRAL CABLE)

  1. Disconnect the F19 receiver connector.

  1. Disconnect the E12 cable connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    F19-8 (SW2) - E12-5 (AU2)
    		Always
    		Below 1 Ω
    F19-6 (SWG) - E12-4 (EAU)
    		Always
    		Below 1 Ω
    F19-7 (SW1) - E12-6 (AU1)
    		Always
    		Below 1 Ω
    F19-8 (SW2) - Body ground
    		Always
    		10 kΩ or higher
    F19-6 (SWG) - Body ground
    		Always
    		10 kΩ or higher
    F19-7 (SW1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT SPIRAL CABLE SUB-ASSEMBLY

Land Cruiser. Urj200, 202 Grj200 Vdj200.Audio Video.Audio And Visual System (For Radio Receiver Type).Audio And Visual System (W/O Stereo Component Amplifier) Steering Pad Switch Circuit


Text in Illustration
*a
Steering Pad Switch Side
*b
Vehicle Side

  1. Disconnect the cable connectors.

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

    Standard Resistance:
    Tester Connection
    		Spiral Cable Position
    		Specified Condition
    E12-4 (EAU) - z36-8 (EAU)
    		2.5 rotations to the left
    		Below 3 Ω
    Center
    2.5 rotations to the right
    E12-5 (AU2) - z36-9 (AU2)
    		2.5 rotations to the left
    		Below 3 Ω
    Center
    2.5 rotations to the right
    E12-6 (AU1) - z36-10 (AU1)
    		2.5 rotations to the left
    		Below 3 Ω
    Center
    2.5 rotations to the right
    CAUTION:
    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 Precaution for the SRS (Click here).


NG
REPLACE SPIRAL CABLE SUB-ASSEMBLY (Click here)
OK


3.INSPECT STEERING PAD SWITCH ASSEMBLY


  1. Disconnect the z36 switch connector.


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Audio Video.Audio And Visual System (For Radio Receiver Type).Audio And Visual System (W/O Stereo Component Amplifier) Steering Pad Switch Circuit


Text in Illustration
*1
Volume+
*2
Volume-
*3
Seek+
*4
Seek-
*5
MODE
-
-

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    10 (AU1) - 8 (EAU)
    		No switch is pushed
    		100 kΩ
    Seek+ switch pushed
    		Below 2.5 Ω
    Seek- switch pushed
    		329 Ω
    Volume+ switch pushed
    		1000 Ω
    Volume- switch pushed
    		3110 Ω
    9 (AU2) - 8 (EAU)
    		No switch is pushed
    		100 kΩ
    MODE switch pushed
    		Below 2.5 Ω


NG
REPLACE STEERING PAD SWITCH ASSEMBLY (Click here)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)