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Circuit/System Testing

  1. Test for less than 1.0 ohm of resistance between the DLC ground circuit terminal 5 and ground.
    • If greater than 1.0 ohm, test the ground circuit for open/high resistance.
  2. Ignition OFF, disconnect the X1 harness connector at the PCM.
  3. Test for less then 5 ohms between the class 2 serial data circuit terminal 16 and ground.
    • If greater then the specified range, test the serial data circuit for a short to open/high resistance.
  4. Ignition ON, test for less then 1 volt between the serial data circuit terminal 16 and ground.
    • If greater then the specified range, test the serial data circuit for a short to voltage.
  5. If all circuits test normal, replace the PCM.
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