Headlight Dimmer Switch Inspection


  1. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY (for LH Side)

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY (for RH Side)

Headlight Dimmer Switch -- Inspection



1. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY (for LH Side)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Ext).Lighting System.Headlight Dimmer Switch  Inspection
  1. Inspect the light control switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      20 (H) - 12 (E)
      Light control switch off
      10 kΩ or higher
      18 (T) - 12 (E)
      19 (A) - 12 (E)
      19 (A) - 12 (E)
      Light control switch auto
      Below 1 Ω
      18 (T) - 12 (E)
      Light control switch tail
      Below 1 Ω
      18 (T) - 12 (E)
      Light control switch head
      Below 1 Ω
      20 (H) - 12 (E)
  1. Inspect the headlight dimmer switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      11 (HU) - 12 (E)
      Headlight dimmer switch flash
      Below 1 Ω
      17 (HF) - 12 (E)
      11 (HU) - 12 (E)
      Headlight dimmer switch hi beam
      Below 1 Ω
      HINT:
      Perform the flash and high beam inspection with the light control switch on head.
  1. Inspect the turn signal switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      13 (TR) - 12 (E)
      Turn signal switch right turn
      Below 1 Ω
      13 (TR) - 12 (E)
      Turn signal switch right lane change
      Below 1 Ω
      13 (TR) - 12 (E)
      Turn signal switch neutral
      10 kΩ or higher
      15 (TL) - 12 (E)
      15 (TL) - 12 (E)
      Turn signal switch left lane change
      Below 1 Ω
      15 (TL) - 12 (E)
      Turn signal switch left turn
      Below 1 Ω
  1. Inspect the fog light switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      4 (BFG) - 3 (LFG)
      Fog light switch off
      10 kΩ or higher
      2 (B) - 3 (LFG)
      4 (BFG) - 3 (LFG)
      Front fog light switch on
      Below 1 Ω
      4 (BFG) - 3 (LFG)
      Rear fog light switch on
      Below 1 Ω
      2 (B) - 3 (LFG)
      If the result is not as specified, replace the headlight dimmer switch.
      Text in Illustration
      *a
      Component without harness connected
      (Headlight Dimmer Switch Assembly)


2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY (for RH Side)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Ext).Lighting System.Headlight Dimmer Switch  Inspection
  1. Inspect the light control switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      11 (H) - 19 (EL)
      Light control switch off
      10 kΩ or higher
      13 (T) - 19 (EL)
      12 (A) - 19 (EL)
      12 (A) - 19 (EL)
      Light control switch auto
      Below 1 Ω
      13 (T) - 19 (EL)
      Light control switch tail
      Below 1 Ω
      13 (T) - 19 (EL)
      Light control switch head
      Below 1 Ω
      11 (H) - 19 (EL)
  1. Inspect the headlight dimmer switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      20 (HU) - 19 (EL)
      Headlight dimmer switch flash
      Below 1 Ω
      14 (HF) - 19 (EL)
      20 (HU) - 19 (EL)
      Headlight dimmer switch hi beam
      Below 1 Ω
      HINT:
      Perform the flash and high beam inspection with the light control switch on head.
  1. Inspect the turn signal switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      16 (TR) - 19 (EL)
      Turn signal switch right turn
      Below 1 Ω
      16 (TR) - 19 (EL)
      Turn signal switch right lane change
      Below 1 Ω
      16 (TR) - 19 (EL)
      Turn signal switch neutral
      10 kΩ or higher
      18 (TL) - 19 (EL)
      18 (TL) - 19 (EL)
      Turn signal switch left lane change
      Below 1 Ω
      18 (TL) - 19 (EL)
      Turn signal switch left turn
      Below 1 Ω
  1. Inspect the fog light switch.

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

      Standard Resistance:
      Tester Connection
      Switch Condition
      Specified Condition
      7 (BFG) - 8 (LFG)
      Fog light switch off
      10 kΩ or higher
      9 (B) - 8 (LFG)
      7 (BFG) - 8 (LFG)
      Front fog light switch on
      Below 1 Ω
      7 (BFG) - 8 (LFG)
      Rear fog light switch on
      Below 1 Ω
      9 (B) - 8 (LFG)
      If the result is not as specified, replace the headlight dimmer switch.
      Text in Illustration
      *a
      Component without harness connected
      (Headlight Dimmer Switch Assembly)