AUDIO AND VISUAL SYSTEM(for Radio and Display Type) Steering Pad Switch Circuit

DESCRIPTION

This circuit sends an operation signal from the steering pad switch assembly to the radio and display assembly.

If there is an open in the circuit, the radio system cannot be operated using the steering pad switch assembly.

If there is a short in the circuit, the resulting condition is the same as if a switch were continuously pressed. Therefore, the radio and display assembly cannot be operated using the steering pad switch assembly, and the radio and display assembly itself cannot function.

WIRING DIAGRAM

A005LSUE01

CAUTION / NOTICE / HINT

Note

The vehicle is equipped with an SRS (Supplemental Restraint System). Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System Click here.

PROCEDURE


  1. INSPECT RADIO AND DISPLAY ASSEMBLY


    1. A005GYXE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Assembly)

      Disconnect the F47 radio and display assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F47-21 (SW1) - F47-23 (SWG) No switch pushed 95 to 105 kΩ
      F47-21 (SW1) - F47-23 (SWG) Seek+ switch pushed Below 2.5 Ω
      F47-21 (SW1) - F47-23 (SWG) Seek- switch pushed 324 to 334 Ω
      F47-21 (SW1) - F47-23 (SWG) Volume+ switch pushed 950 to 1050 Ω
      F47-21 (SW1) - F47-23 (SWG) Volume- switch pushed 3060 to 3160 kΩ
      F47-22 (SW2) - F47-23 (SWG) No switch pushed 95 to 105 kΩ
      F47-22 (SW2) - F47-23 (SWG) MODE switch pushed Below 2.5 Ω
      F47-22 (SW2) - F47-23 (SWG) On Hook switch pushed 313 to 345 Ω
      F47-22 (SW2) - F47-23 (SWG) Off Hook switch pushed 950 to 1050 Ω

    OK

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

    NG

  2. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Inspect the steering pad switch assembly Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  3. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Inspect the spiral cable sub-assembly Click here.

      Note

      The spiral cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable sub-assembly may prevent the airbag from deploying. Refer to the pages shown in the brackets.

      Tech Tips



    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (RADIO AND DISPLAY ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here