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Home >> Subaru >> 2018 >> WRX STI >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrumentation System & Driver Information Center (Service Information) >> Switches And Harness >> Inspection >> Illumination Control Switch

Illumination Control Switch

  1. Measure the resistance between connector terminals.

    Preparation Tool: 

    Circuit tester

    G12456072
    TERMINAL NO. INSPECTION CONDITIONS STANDARD
    1 - 6 Bright switch OFF 10 kΩ or more
    Bright switch ON Less than 1 Ω
    4 - 6 Always Approx. 4, 710 Ω
    5 - 6 Illumination control switch upward fully open Approx. 510 Ω
    Illumination control switch downward fully open Approx. 4, 610 Ω
  2. Apply Battery Voltage between the connector terminals to Check Lighting Condition of Illumination inside the Switch.
    SWITCH TERMINAL INSPECTION SPECIFICATION

    Terminal No. Inspection Conditions Specification
    2 (+) - 3(-) Apply Battery Voltage. Light ON
  3. Replace the Illumination Control Switch if it is found defective.