NAVIGATION SYSTEM Dimmer Signal Circuit

DESCRIPTION

The combination meter assembly sends an auto dimmer signal to the navigation receiver assembly via this circuit.

When the navigation receiver assembly receives an auto dimmer signal from the combination meter assembly, the panel switch of the navigation receiver assembly dims and the screen changes to the night screen.

WIRING DIAGRAM

B003R0GE92
*a ACAN
*b ADIM
*c Combination Meter Assembly
*d Navigation Receiver Assembly

CAUTION / NOTICE / HINT

Note


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

    Click here

  • When replacing the combination meter assembly, make sure to replace it with a new one.

PROCEDURE


  1. CHECK COMBINATION METER ASSEMBLY


    1. Disconnect the navigation receiver assembly connector.

    2. B003KJBC60
      *a

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G41-3 (ADIM) - Body ground

      Ignition switch ON

      Automatic light control sensor covered by hand, and light control switch in tail or head position

      		 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

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


    1. Disconnect the G41 navigation receiver assembly connector.

    2. Disconnect the G8 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-4 (ACAN) - G41-3 (ADIM) Always Below 1 Ω
      G8-4 (ACAN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR