ASC SYSTEM Main Switch Circuit

DESCRIPTION

The stereo component equalizer assembly detects vehicle sound switch signals.

The ASC system can be turned on and off by operating the vehicle sound switch.

WIRING DIAGRAM

B0059AYE02

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Click here


      Body Electrical > ASC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Volume SW Vehicle sound switch on/off status OFF or ON

      OFF: Vehicle sound switch off

      ON: Vehicle sound switch on

      		 -
      Volume Switch Voltage The VSLI terminal voltage to the CPU of the stereo compartment equalizer assembly

      Min.: 0 V

      Max.: 5 V

      		 Changes according to vehicle sound switch volume setting -

      Body Electrical > ASC > Data List
      Tester Display
      Volume SW
      Volume Switch Voltage
      OK
      The display is as specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT VEHICLE SOUND SWITCH


    1. Remove the vehicle sound switch.

      Click here

    2. Inspect the vehicle sound switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE VEHICLE SOUND SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (VEHICLE SOUND SWITCH - BATTERY)


    1. B00588PC01
      *a

      Front view of wire harness connector

      (to Vehicle Sound Switch)

      Disconnect the vehicle sound switch connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I114-8 (NVS) - Body ground Engine switch on (IG) 11 to 14 V
      I114-8 (NVS) - Body ground Engine switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (VEHICLE SOUND SWITCH - STEREO COMPONENT EQUALIZER ASSEMBLY)


    1. Disconnect the I114 vehicle sound switch connector.

    2. Disconnect the I117 stereo component equalizer assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I114-3 (NVI) - I117-5 (VLSW) Always Below 1 Ω
      I114-6 (NVM) - I117-14 (VSLI) Always Below 1 Ω
      I114-3 (NVI) or I117-5 (VLSW) - Body ground Always 10 kΩ or higher
      I114-6 (NVM) or I117-14 (VSLI) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR