NAVIGATION SYSTEM (for DVD) Steering Pad Switch Circuit

DESCRIPTION

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

If there is an open in the circuit, the navigation 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 to if the switch were continuously pressed. Therefore, the display and navigation module display cannot be operated using the steering pad switch assembly, and the display and navigation module display itself cannot function.

WIRING DIAGRAM

A01616PE16

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY


    1. A015ZJIE29
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Display and Navigation Module Display)

      Disconnect the J122 display and navigation module display connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      J122-25 (SW1) - J122-23 (SWG) No switch pushed 95 to 105 kΩ
      J122-25 (SW1) - J122-23 (SWG) Seek+ switch pushed Below 2.5 Ω
      J122-25 (SW1) - J122-23 (SWG) Seek- switch pushed 312 to 345 Ω
      J122-25 (SW1) - J122-23 (SWG) Volume+ switch pushed 950 to 1050 Ω
      J122-25 (SW1) - J122-23 (SWG) Volume- switch pushed 2954 to 3265 Ω
      J122-24 (SW2) - J122-23 (SWG) No switch pushed 95 to 105 kΩ
      J122-24 (SW2) - J122-23 (SWG) MODE switch pushed Below 2.5 Ω
      J122-24 (SW2) - J122-23 (SWG) Voice switch pushed 2954 to 3265 Ω
      J122-24 (SW2) - J122-23 (SWG) On Hook switch pushed 312 to 345 Ω
      J122-24 (SW2) - J122-23 (SWG) Off Hook switch pushed 950 to 1050 Ω

    NG

    INSPECT SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. A0162XFE37
      Text in Illustration
      *1

      Component without harness connected

      (Spiral Cable Sub-assembly)
      *2 Steering Pad Switch Side
      *3 Vehicle Side

      Disconnect the k1 steering pad switch assembly and J24 spiral cable sub-assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      k1-8 (EAU) - J24-4 (EAU) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      k1-10 (AU1) - J24-6 (AU1) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      k1-9 (AU2) - J24-5 (AU2) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

      Note

      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. Refer to the pages shown in the brackets.

      Tech Tips



    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Disconnect the k1 steering pad switch assembly connector.

      A015ZWNE11

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      k1-10 (AU1) - k1-8 (EAU) No switch pushed 95 to 105 kΩ
      k1-10 (AU1) - k1-8 (EAU) Seek+ switch pushed Below 2.5 Ω
      k1-10 (AU1) - k1-8 (EAU) Seek- switch pushed 312 to 345 Ω
      k1-10 (AU1) - k1-8 (EAU) Volume+ switch pushed 950 to 1050 Ω
      k1-10 (AU1) - k1-8 (EAU) Volume- switch pushed 2954 to 3265 Ω
      k1-9 (AU2) - k1-8 (EAU) No switch pushed 95 to 105 kΩ
      k1-9 (AU2) - k1-8 (EAU) MODE switch pushed Below 2.5 Ω
      k1-9 (AU2) - k1-8 (EAU) Voice switch pushed 2954 to 3265 Ω
      k1-9 (AU2) - k1-8 (EAU) On Hook switch pushed 312 to 345 Ω
      k1-9 (AU2) - k1-8 (EAU) Off Hook switch pushed 950 to 1050 Ω
      Text in Illustration
      *1

      Component without harness connected

      (Steering Pad Switch Assembly)

      		 *2 Volume+
      *3 Volume- *4 Seek-
      *5 MODE *6 Seek+
      *7 Off Hook *8 On Hook
      *9 Voice - -

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - SPIRAL CABLE)