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Check Throttle Position Sensor Power Supply

  1. 9L1: CHECK THROTTLE POSITION SENSOR POWER SUPPLY. 

    Read data of throttle position sensor power supply using Subaru Select Monitor.

    • Throttle position sensor power supply voltage is indicated.

    CHECK: Is the value fixed between 4.8 and 5.3 V? 

    1. YES:  Go to step intake manifold pressure signal, see CHECK INTAKE MANIFOLD PRESSURE SIGNAL  .
    2. NO:  Check throttle position sensor power supply circuit, see DTC 31: THROTTLE POSITION SENSOR  .