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Circuit/System Testing

  1. Ignition ON, verify DTC P0616 is set as current.
  2. Ignition OFF, disconnect the starter relay.
  3. Ignition ON, verify a test lamp illuminates between the relay coil supply voltage circuit terminal 86 and ground.
    • If the test lamp did not illuminate, test the relay coil supply voltage circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, connect a test lamp between the relay coil supply voltage circuit terminal 86 and the relay control circuit terminal 85.
  5. Fully depress clutch pedal on manual transmissions or PARK/Neutral on automatic transmissions.
  6. Place the ignition to the start position.
  7. The test lamp should only illuminate when the ignition is held in the start position.
    • If the test lamp is always ON, test the control circuit for short to ground. If the circuits test normal replace the ECM.
    • If the test lamp is always OFF, test the control circuit for a short to voltage or an open/ high resistance. If the circuits test normal replace the ECM.
  8. If the circuits test normal, replace the starter relay.
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