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Inspection Procedure

  1. INSPECT HEIGHT CONTROL SENSOR SUB-ASSY (FRONT) 
    1. Connect 3 dry cell batteries (1.5 V) in series.
    2. Connect the dry cell battery positive (+) terminal to terminal 1 (SHB) and the negative one to terminal 4 (SHG) to apply the voltage of 4.5 V between terminals 1 (SHB) and 4 (SHG).
    3. While slowly moving the link up and down with the voltage being applied, measure the voltage between terminals 2 (SHFL) and 4 (SHG).

      Standard: 

      HEIGHT CONTROL SENSOR SUB-ASSY (FRONT) VOLTAGE

      Link Angle Specified Condition
      +45° (High) 4.5 V
      0° (Normal) 2.5 V
      -45° (Low) 0.5 V
      Fig 1: Inspecting Height Control Sensor Sub-Assy (Front)
      G02955170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE HEIGHT CONTROL SENSOR SUB-ASSY (FRONT) 
    2. OK: Go to next step. 
  2. INSPECT HEIGHT CONTROL SENSOR SUB-ASSY (REAR) 
    1. Connect 3 dry cell batteries (1.5 V) in series.
    2. Connect the dry cell battery positive (+) terminal to terminal 3 (SHB) and the negative one to terminal 1 (SHG) to apply the voltage of 4.5 V between terminals 3 (SHB) and 1 (SHG).
    3. While slowly moving the link up and down with the voltage being applied, measure the voltage between terminals 2 (SHFL) and 1 (SHG).

      Standard: 

      HEIGHT CONTROL SENSOR SUB-ASSY (REAR) VOLTAGE

      Link Angle Specified Condition
      +45° (High) 4.5 V
      0° (Normal) 2.5 V
      -45° (Low) 0.5 V
      Fig 2: Identifying Height Control Sensor Sub-Assy (Rear)
      G02955171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE HEIGHT CONTROL SENSOR SUB-ASSY (REAR) 
    2. OK: Go to next step. 
  3. CHECK WIRE HARNESS (HEADLAMP BEAM LEVEL CONTROL ECU - HEIGHT CONTROL SENSOR SUB-ASSY) 
    1. Front:

      Disconnect the H11 sensor connector.

    2. Rear:

      Disconnect the H17 sensor connector.

    3. Disconnect the H14 ECU connector.
    4. Measure the resistance of the wire harness side connectors.

      Standard: 

      Front 

      HEADLAMP BEAM LEVEL CONTROL ECU (FRONT) - HEIGHT CONTROL SENSOR SUB-ASSY RESISTANCE

      Tester Connection Specified Condition
      H11-1 (SHB) - H14-20 (SBF) Below 1 ohms
      H11-2 (SHFL) - H14-17 (SHRL) Below 1 ohms
      H11-3 (SHG) - H14-16 (SGF) Below 1 ohms

      Rear 

      HEADLAMP BEAM LEVEL CONTROL ECU (REAR) - HEIGHT CONTROL SENSOR SUB-ASSY RESISTANCE

      Tester Connection Specified Condition
      H17-1 (SHB) - H14-20 (SBF) Below 1 ohms
      H17-2 (SHRL) - H14-18 (SHRL) Below 1 ohms
      H17-3 (SHG) - H14-16 (SGF) Below 1 ohms
      Fig 3: Identifying Terminals Of H14 Headlamp Beam Level Control ECU, H11 & H17 Height Control Sensor Sub-Assy Connectors
      G02955172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 
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