NAVIGATION SYSTEM 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

B003NE9E02

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.

Note

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections.

Click here

PROCEDURE


  1. CHECK ILLUMINATION


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

      Result
      Result Proceed to
      Illumination other than that for the steering pad switch assembly properly functions. A
      Illumination other than that for the navigation receiver assembly properly functions. B
      Illumination does not function at all (navigation receiver assembly, 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 VEHICLE CONDITION


    1. Check the vehicle condition.

      Result
      Result Proceed to
      w/ VSC A
      w/o VSC B

    B

    CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - NAVIGATION RECEIVER ASSEMBLY AND BATTERY) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - NAVIGATION RECEIVER ASSEMBLY AND BATTERY)


    1. Disconnect the G41 navigation receiver assembly connector.

    2. Disconnect the G4 spiral with sensor cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G41-23 (SWG) - G4-3 (EAU) Always Below 1 Ω
      G41-23 (SWG) - Body ground Always 10 kΩ or higher

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G4-13 (IL+2) - Body ground Light control switch in the tail or head position 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly.

      Click here

    2. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  5. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY


    1. Remove the spiral with sensor cable sub-assembly.

      Click here

    2. Inspect the spiral with sensor cable sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

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


    1. Disconnect the G41 navigation receiver assembly connector.

    2. Disconnect the G4 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
      G41-23 (SWG) - G4-3 (EAU) Always Below 1 Ω
      G41-23 (SWG) - Body ground Always 10 kΩ or higher

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G4-13 (IL+2) - Body ground Light control switch in the tail or head position 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly.

      Click here

    2. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  8. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly.

      Click here

    2. Inspect the spiral cable sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. B003O7OC20
      *a

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

      Disconnect the navigation receiver assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G43-10 (ILL+) - Body ground Light control switch in the tail or head position 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the G44 navigation receiver assembly connector.

    2. Disconnect the G9 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G44-5 (ILL-) - G9-21 (ILL-) Always Below 1 Ω
      G44-5 (ILL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR