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Front Acceleration Sensor: Inspection

  1. INSPECT ACCELERATION SENSOR ASSEMBLY 
    1. Inspect the acceleration sensor LH.
    2. Connect 3 dry cell batteries of 1.5 V in series.
    3. Connect the positive (+) end of the batteries to terminal 3 (SGV) of the acceleration sensor and the negative (-) end of the batteries to terminal 2 (SGND). Then measure the voltage between terminal 1 (SGRR) and terminal 2 (SGND).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Sensor Condition Specified Condition
      1 (SGRR) - 2 (SGND) Sensor stationary Approx. 2.0 to 2.5 V
      Sensor is tilted Change between approx. 0.9 to 2.3 V
      NOTE: Do not apply a voltage of more than 6 V.

      HINT:

      When the acceleration sensor is tilted, it may output a different value.

      Fig 1: Inspecting Acceleration Sensor LH
      G05649126Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Inspect the acceleration sensor RH.
    6. Connect 3 dry cell batteries of 1.5 V in series.
    7. Connect the positive (+) end of the batteries to terminal 3 (SHB) of the acceleration sensor and the negative (-) end of the batteries to terminal 2 (SHG). Then measure the voltage between terminal 1 (SGFL) and terminal 2 (SHG).
    8. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Sensor Condition Specified Condition
      1 (SGFL) - 2 (SHG) Sensor stationary Approx. 2.0 to 2.5 V
      Sensor is tilted Change between approx. 0.9 to 2.3 V
      NOTE: Do not apply a voltage of more than 6 V.

      HINT:

      When the acceleration sensor is tilted, it may output a different value.

      Fig 2: Inspecting Acceleration Sensor RH
      G05649125Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002