NAVIGATION SYSTEM Illumination Circuit

DESCRIPTION

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

WIRING DIAGRAM

A016033E06

INSPECTION PROCEDURE

Note

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 precaution for Supplemental Restraint System Click here.

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the multi-media module receiver assembly, 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 comes on for all components except steering pad switch assembly. A
      Illumination comes on for all components except multi-media module receiver assembly. B
      Illumination comes on for all components except multi-display assembly. C
      No illumination comes on (multi-media module receiver assembly, hazard switch, heater control switch, etc.). D
      Illumination comes on only for steering pad switch assembly. E

    B

    CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) Click here

    C

    CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) Click here

    D

    GO TO LIGHTING SYSTEM Click here

    E

    GO TO METER / GAUGE SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the J24 spiral cable sub-assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J24-12 (IL+2) - Body ground Light control switch in 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.

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

      A01636XE04

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

      OK
      Illumination for the steering pad switch assembly comes on.
      Text in Illustration
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

      		 - -

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly.

    2. A0162XFE96
      Text in Illustration
      *a

      Component without harness connected

      (Spiral Cable Sub-assembly)
      *b Steering Pad Switch Assembly Side
      *c Vehicle Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      k1-5 (IL+2) - J24-12 (IL+2) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      k1-8 (EAU) - J24-4 (EAU) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

    3. After setting the spiral cable sub-assembly to the center position, rotate the spiral cable sub-assembly 2.5 times clockwise. Then while rotating the spiral cable sub-assembly 5 times counterclockwise, measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      k1-5 (IL+2) - J24-12 (IL+2) Always Below 1 Ω
      k1-8 (EAU) - J24-4 (EAU) Always Below 1 Ω

      Note


      • The spiral cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable sub-assembly may prevent the airbag from deploying. Refer to the pages shown in the brackets.

      • As the spiral cable sub-assembly may break, do not rotate the spiral cable sub-assembly more than the specified amount.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)


    1. Disconnect the J137 multi-media module receiver assembly connector.

    2. Disconnect the J24 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
      J137-32 (SWG) - J24-4 (EAU) Always Below 1 Ω
      J137-32 (SWG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  6. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the J137 multi-media module receiver assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J137-14 (ILL+) - Body ground Light control switch in tail or head position 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the J137 multi-media module receiver assembly connector.

    2. Disconnect the J35 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J137-13 (ILL-) - J35-9 (ILL-) Always Below 1 Ω
      J35-9 (ILL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  8. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the J138 multi-display assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J138-2 (ILL) - Body ground Light control switch in tail or head position 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the J138 multi-display assembly connector.

    2. Disconnect the J35 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J138-14 (ILL-) - J35-9 (ILL-) Always Below 1 Ω
      J35-9 (ILL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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