NAVIGATION SYSTEM(for Navigation Receiver Type) Illumination Circuit

DESCRIPTION

Power is supplied to the navigation receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.

WIRING DIAGRAM

B001HA3E03

CAUTION / NOTICE / HINT

CAUTION:

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 precautionary notice for the Supplemental Restraint System Click here.

Note

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

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the navigation receiver assembly, steering pad switch assembly, heater control switch or others (hazard switch, transmission control switch, etc.) come on when the light control switch is turned to the head or tail position.

      Result
      Result Proceed to
      Illumination comes on for all components except steering pad switch assembly. A
      Illumination comes on for all components except radio and display receiver assembly. B
      No illumination comes on (radio and display receiver assembly, steering pad switch, hazard switch, heater control switch, etc.). C

    B

    CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) Click here

    C

    GO TO LIGHTING SYSTEM (INT) Click here

    A

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


    1. B001EZYC39
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Disconnect the spiral cable sub-assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G208-13 (IL+2) - Body ground Light control switch tail or head position 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. 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

  4. 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

  5. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)


    1. Disconnect the H56 navigation receiver assembly connector.

    2. Disconnect the G208 spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H56-23 (SWG) - G208-3 (EAU) Always Below 1 Ω
      H56-23 (SWG) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. B001DQEC39
      *a

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

      Disconnect the navigation receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H54-7 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H54-10 (ILL+) - Body ground Light control switch in the tail or head position 11 to 14 V

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR