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Home >> Pontiac >> 2006 >> Solstice Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.4L - DTC P0351 To DTC P2138 >> DTC P1682 >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition ON, observe the Ignition 1 Voltage parameter. Voltage should be more than 10 volts.
    • If less than 10 volts, test the ignition 1 voltage circuit that powers the ETC fuse for an open or a faulty ECM.
  2. Ignition ON, probe both sides of the ETC fuse with a test lamp. The test lamp should illuminate on both sides of the fuse.
    • If the test lamp illuminates on only one side of the fuse, test the ignition 1 voltage circuit that powers the ETC fuse for a short to ground or a faulty ECM.
  3. Ignition OFF, probe both sides of the ETC fuse. The test lamp should not illuminate on either side of the fuse.
    • If the test lamp illuminates on at least one side of the fuse, test the ignition 1 voltage circuit that powers the ETC fuse for a short to voltage or a faulty ECM.
  4. Ignition ON, probe both sides of the PCM IGN 1 fuse. The test lamp should illuminate on both sides of the fuse.
    • If the test lamp illuminates on only one side of the fuse test the ignition 1 voltage circuit that powers the PCM IGN 1 fuse for a short to ground or a faulty ECM.
    • If the test lamp does not illuminate on both sides of the fuse, test the ignition 1 voltage circuit that powers the PCM IGN 1 fuse for an open or faulty ECM.
  5. Ignition OFF, probe both sides of the PCM IGN 1 fuse. The test lamp should not illuminate on either side of the fuse.
    • If the test lamp illuminates on at least one side of the fuse, test the ignition 1 voltage circuit that powers the PCM IGN 1 fuse for a short to voltage or a faulty ECM.
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