FixVault

Crankshaft Position Sensor (Method With Oscilloscope)

  1. Prepare an oscilloscope.
  2. Remove the glove box lid assembly. Refer to GLOVE BOX .
  3. Connect the probe to ECM connector.
    Fig 1: Connecting Probe To ECM Connector
    G07912303Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Probe
    17 +
    25 -
  4. Start the engine and let it idle.
  5. Check that the pattern is the same as the waveform and voltage shown below.
    Fig 2: Crankshaft Position Sensor Waveform
    G07912304Courtesy of SUBARU OF AMERICA, INC.
  6. After inspection, install the related parts in the reverse order of removal.