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On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT MAP LIGHT ASSEMBLY 
    Fig 1: Identifying Map Light Assembly Connector Terminals
    G05782902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the map light with connecting connector.
    2. Measure the voltage according to the value (s) in the table below

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Switch Condition Specified Condition
      X4-3 (RLSW) - X4-16 (GND9) Rear spot light RH switch OFF Below 1 V
      Rear spot light RH switch ON 11 to 14 V
      X4-4 (RRSW) - X4-16 (GND9) Rear spot light LH switch OFF Below 1 V
      Rear spot light LH switch ON 11 to 14 V
      X4-6 (+B) - X4-16 (GND9) Always 11 to 14 V
      X4-11 (ILLB) - X4-16 (GND9) Always 11 to 14 V
      X4-12 (RLVS) - X4-16 (GND9) Rear vanity light LH switch OFF Below 1 V
      Rear vanity light LH switch ON 11 to 14 V
      X4-13 (RRVS) - X4-16 (GND9) Rear vanity light RH switch OFF Below 1 V
      Rear vanity light RH switch ON 11 to 14 V
      X4-27 (DOME) - X4-16 (GND9) Always 11 to 14 V
      X6-7 (RLMP) - X4-16 (GND9) Always 11 to 14 V
      X6-8 (RRMP) - X4-16 (GND9) Always 11 to 14 V
      X6-11 (ILL+) - X4-16 (GND9) Power switch ON (ACC) 11 to 14 V
      X6-13 (ILL-) - X4-16 (GND9) Headlight dimmer switch OFF 11 to 14 V
      Headlight dimmer switch TAIL Below 1 V
      X6-14 (RRVT) - X4-16 (GND9) Rear vanity light RH switch OFF 11 to 14 V
      Rear vanity light RH switch ON Below 1 V
      X6-16 (RLVT) - X4-16 (GND9) Rear vanity light LH switch OFF 11 to 14 V
      Rear vanity light LH switch ON Below 1 V
      X6-18 (RILL) - X4-16 (GND9) Rear dome light OFF 11 to 14 V
      Rear dome light ON Below 1 V
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      MEASUREMENT CONDITION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Condition Specified Condition
      X4-15 (GND6) - Body ground Always Below 1 Ω
      X4-16 (GND9) - Body ground Always Below 1 Ω
      X6-17 (GND6) - Body ground Always Below 1 Ω
      X6-20 (GND4) - Body ground Always Below 1 Ω

      If the result is not as specified, replace the map light.

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