NAVIGATION SYSTEM Steering Pad Switch Circuit

DESCRIPTION

This circuit sends an operation signal from the steering pad switch assembly to the multi-media module receiver assembly.

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

If there is a short in the circuit, the same condition as when a switch is continuously depressed occurs.

Therefore, the multi-media module receiver assembly cannot be operated using the steering pad switch assembly, and also the multi-media module receiver assembly itself cannot function.

WIRING DIAGRAM

A01GX3TE01

INSPECTION PROCEDURE

Note


  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System Click here.

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System Click here.

PROCEDURE


  1. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly Click here.

    2. Inspect the steering pad switch assembly Click here.


    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY


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

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


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)


    1. Disconnect the L164 multi-media module receiver assembly connector.

    2. Disconnect the L126 spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      L164-30 (SW1) - L126-6 (AU1) Always Below 1 Ω
      L164-31 (SW2) - L126-13 (AU2) Always Below 1 Ω
      L164-32 (SWG) - L126-11 (EAU) Always Below 1 Ω
      L164-30 (SW1) - Body ground Always 10 kΩ or higher
      L164-31 (SW2) - Body ground Always 10 kΩ or higher
      L164-32 (SWG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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