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NAVIGATION SYSTEM (for DVD) Illumination Circuit

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DTC Code DTC Name
  Illumination Circuit
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DESCRIPTION

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

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

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

  • The vehicle is equipped with a Supplemental Restraint System (SRS). Before servicing (including removal or installation of parts), be sure to read Precaution for Supplemental Restraint System (Click here).

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PROCEDURE


  1. Click here

    CHECK ILLUMINATION


    1. Check if the illumination for the steering pad switch assembly, multi-display switch, glove box or others (hazard switch, etc.) comes on when the light control switch is turned to the tail or head position.

      Result
      Result Proceed to
      Illumination comes on for all components except steering pad switch. A
      Illumination comes on for all components except multi-display switch. B
      No illumination comes on (steering pad switch assembly, multi-display switch, glove box, hazard switch, etc.). C

  2. Click here

    CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the H30 spiral with sensor cable sub-assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H30-13 (IL+2) - Body ground Light control switch in the tail or head position 11 to 14 V

  3. Click here

    INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY


    1. A003XSFE05

      Disconnect the z4 steering pad switch assembly and H30 spiral with sensor cable sub-assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z4-8 (EAU) - H30-3 (EAU) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z4-5 (IL+2) - H30-13 (IL+2) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z4-3 (-DP) - H30-11 (-DP) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

    3. After setting the spiral with sensor cable sub-assembly to the center position, rotate the spiral with sensor cable sub-assembly 2.5 times clockwise. Then while rotating the spiral with sensor cable as shown in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      z4-8 (EAU) - H30-3 (EAU) Always Below 1 Ω
      z4-5 (IL+2) - H30-13 (IL+2) Always Below 1 Ω
      z4-3 (-DP) - H30-11 (-DP) Always Below 1 Ω
      Note:

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

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

      Tip:
      Table 1. Text in Illustration
      *a

      Component without harness connected

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

  4. Click here

    CHECK HARNESS AND CONNECTOR


    1. Disconnect the H60 display and navigation module display connector.

    2. Disconnect the H30 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
      H60-23 (SWG) - H30-3 (EAU) Always Below 1 Ω
      H30-11 (-DP) - Body ground Always Below 1 Ω
      H60-23 (SWG) - Body ground Always 10 kΩ or higher

  5. Click here

    INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY


    1. A003ZVHE20

      Disconnect the H60 display and navigation module display connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H60-10 (GND1) - H60-23 (SWG) Always Below 1 Ω
      Table 2. Text in Illustration
      *a

      Component without harness connected

      (Display and Navigation Module Display)

  6. Click here

    INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Disconnect the z4 steering pad switch assembly connector.

    2. A003V1WE01

      Check that the steering pad switch assembly illuminates according to the table below.

      OK
      Connection Specified Condition

      Auxiliary battery positive (+) → z4-5 (IL+2)

      Auxiliary battery negative (-) → z4-8 (EAU)

      		 Switches of steering pad switch LH side illuminates.

      Auxiliary battery positive (+) → z4-5 (IL+2)

      Auxiliary battery negative (-) → z4-3 (-DP)

      		 Switches of steering pad switch RH side illuminates.
      Table 3. Text in Illustration
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

      		 - -

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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  8. Click here

    INSPECT MULTI-DISPLAY SWITCH (MULTI-DISPLAY SWITCH ILLUMINATION)


    1. A003VWIE02

      Disconnect the H89 multi-display switch connector.

    2. Connect a positive (+) lead to terminal ILL+ and a negative (-) lead from the auxiliary battery to terminal ILL- of the multi-display switch connector.

    3. Check that the multi-display switch illumination comes on.

      OK
      Multi-display switch illumination comes on.
      Table 4. Text in Illustration
      *a

      Component without harness connected

      (Multi-display Switch)

  9. Click here

    CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. Disconnect the H89 multi-display switch connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H89-4 (ILL+) - Body ground Light control switch in the tail or head position 11 to 14 V

  10. Click here

    CHECK HARNESS AND CONNECTOR


    1. Disconnect the H89 multi-display switch connector.

    2. Disconnect the H19 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H89-14 (ILL-) - H19-10 (ILL-) Always Below 1 Ω
      H89-14 (ILL-) - Body ground Always 10 kΩ or higher

  11. Click here

    GO TO METER / GAUGE SYSTEMClick here

  12. Click here

    GO TO LIGHTING SYSTEMClick here

  13. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. Click here

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLYClick here

  15. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  16. Click here

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAYClick here

  17. Click here

    REPLACE STEERING PAD SWITCH ASSEMBLYClick here

  18. Click here

    REPLACE MULTI-DISPLAY SWITCHClick here

  19. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  20. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR