NAVIGATION SYSTEM Illumination Circuit

DESCRIPTION

Power is supplied to the multi-display and steering pad switch assembly illumination when the light control switch is in the TAIL or HEAD position.

WIRING DIAGRAM

A0161Z2E02

INSPECTION PROCEDURE

Note

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 precautionary notice for the Supplemental Restraint System Click here.

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the multi-display, steering pad switch assembly, cigarette lighter, or others (seat heater switch, hazard switch, etc.) comes on when the light control switch is turned to the HEAD or TAIL position.

      Result
      Condition Proceed to
      Illumination comes on for all components except steering pad switch. A
      Illumination comes on for all components except multi-display. B
      No illumination comes on (radio receiver, hazard switch, cigarette lighter, etc.) C
      Illumination comes on only for cigarette lighter and steering pad switch. D

    B

    CHECK HARNESS AND CONNECTOR (BATTERY - MULTI-DISPLAY) Click here

    C

    GO TO LIGHTING SYSTEM Click here

    D

    GO TO METER / GAUGE SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (BATTERY - SPIRAL CABLE)


    1. A0160WJE24

      Disconnect the spiral cable connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      J24-12 (IL+2) - Body ground Light control switch TAIL or HEAD 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK STEERING PAD SWITCH ASSEMBLY


    1. Disconnect the steering pad switch assembly connector.

      A0160UDE03

    2. Connect a positive (+) lead to terminal IL+2 and a negative (-) lead to terminal EAU of the steering pad switch assembly connector.

    3. Check if the illumination for the steering pad switch assembly comes on.

      OK
      Illumination for the steering pad switch assembly comes on.

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  4. CHECK SPIRAL CABLE


    1. A0160HPE95

      Disconnect the steering pad switch assembly and spiral cable 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
      k1-5 (IL+2) - J24-12 (IL+2) 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 deploy the airbag. Be sure to read the page shown in the bracket Click here.


    NG

    REPLACE SPIRAL CABLE Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)


    1. A0163HIE01

      Disconnect the radio receiver and spiral cable connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J63-6 (SWG) - J24-4 (EAU) Always Below 1 Ω
      J63-6 (SWG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO RECEIVER Click here

  6. CHECK HARNESS AND CONNECTOR (BATTERY - MULTI-DISPLAY)


    1. A0161DPE01

      Disconnect the multi-display connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      J50-12 (ILL+) - Body ground Light control switch TAIL or HEAD 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMBINATION METER)


    1. A0161DPE02

      Disconnect the multi-display and combination meter connectors.

    2. A01629PE01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J50-11 (ILL-) - J35-9 (ILL-) Always Below 1 Ω
      J50-11 (ILL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here