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Operating Light Control Rheostat does not Change Light Brightness: Wiring Diagram

Fig 1: Operating Light Control Rheostat - Wiring Diagram
G04022086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. CHECK MULTIPLEX COMMUNICATION SYSTEM 

    Please follow these pages (See HOW TO PROCEED WITH TROUBLESHOOTING ).

    If the multiplex communication system is operating normally, proceed to the next step.

    NEXT 

  2. READ VALUE OF INTELLIGENT TESTER 
    1. Operate the intelligent tester according to the display and select the "Data List".

    Integration control and panel assembly 

    ITEM CONDITION CHART

    Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
    RHEOSTAT UP SWITCH Rheostat Up switch/ ON or OFF ON: Switch is pushed OFF: Switch is not pushed -
    RHEOSTAT DOWN SWITCH Rheostat Down switch/ ON or OFF ON: Switch is pushed OFF: Switch is not pushed -

    OK : Switch condition (ON/OFF) can be switched by actual operation. 

    NG : REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY 

    OK : REPLACE COMBINATION METER