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Home >> Chrysler >> 2003 >> Intrepid SXT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0351: Ignition Coil #1 Circuit, DTC P0352: Ignition Coil #2 Circuit, DTC P0353: Ignition Coil #3 Circuit, DTC P0354: Ignition Coil #4 Circuit, DTC P0355: Ignition Coil #5 Circuit Or DTC P0356: Ignition Coil #6 Circuit >> Testing

DTC P0351: Ignition Coil #1 Circuit, DTC P0352: Ignition Coil #2 Circuit, DTC P0353: Ignition Coil #3 Circuit, DTC P0354: Ignition Coil #4 Circuit, DTC P0355: Ignition Coil #5 Circuit Or DTC P0356: Ignition Coil #6 Circuit: Testing

  1. Turn ignition on, engine off. With the DRBIII® scan tool, read DTCs and record the related freeze frame data. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, see INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn the ignition off. Disconnect the coil on plug harness connector related to DTC that is set. Turn ignition on, engine not running. With the DRBIII® scan tool, actuate the ASD relay. Using a 12-volt test light connected to ground, check the ASD relay output circuit at the coil on plug harness connector. Does the test light illuminate brightly? If yes, stop all actuations and go to next step. If no, stop all actuations and go to step  7.
    3. NOTE: The following resistance measurement should be taken at 70-80°F (21-26°C).
  3. Turn the ignition off. Disconnect the coil on plug harness connector. Measure the primary resistance of the coil on plug (component side). Is the resistance between 0.6 and 0.9 ohm? If yes, go to next step. If no, replace the coil on plug.
  4. Turn the ignition off. Disconnect the coil on plug harness connector. Disconnect PCM harness connectors. Measure the resistance between the coil control circuit and ground. Is the resistance below 5.0 ohms? If yes, repair the short to ground in the coil control circuit. If no, go to next step.
    5. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool (8815) to perform diagnosis.
  5. Turn the ignition off. Disconnect the coil on plug harness connector. Disconnect PCM harness connectors. Measure the resistance of the coil control circuit from the coil on plug connector to the appropriate terminal of Miller Special Tool (8815). Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open coil control circuit.
    6. NOTE: Before continuing, check the PCM harness connectors for corrosion, damage or terminal push out. Repair as necessary.
  6. There are no possible causes remaining, replace PCM. Program the new PCM. See PROGRAMMING .
  7. Ensure the ignition is off and coil on plug is disconnected. Remove the ASD Relay from the PDC. Measure the resistance of the ASD relay output circuit between the ASD relay connector and the ignition coil harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the ASD relay output circuit.
    8. NOTE: Repeat the following test for both ignition coil capacitors. The ignition coil capacitors are attached to the side of each valve cover.
  8. Turn the ignition off. Disconnect the ignition coil capacitor harness connector. Install a good INJ/COIL fuse (fuse S) in the PDC. With the DRBIII® scan tool, actuate the ASD relay. Is the INJ/COIL fuse okay for both Ignition Coil Capacitor tests? If yes, replace the ignition coil capacitor(s). If no, repair the short to ground in the ASD output circuit.
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