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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Controls - Self Diagnostics - 4.7L) >> Diagnostic Tests >> DTC P0351: Ignition Coil #1 Primary Circuit, DTC P0352: Ignition Coil #2 Primary Circuit, DTC P0353: Ignition Coil #3 Primary Circuit, DTC P0354: Ignition Coil #4 Primary Circuit, DTC P0355: Ignition Coil #5 Primary Circuit, DTC P0356: Ignition Coil #6 Primary Circuit, DTC P0357: Ignition Coil #7 Primary Circuit Or DTC P0358: Ignition Coil #8 Primary Circuit >> Testing

DTC P0351: Ignition Coil #1 Primary Circuit, DTC P0352: Ignition Coil #2 Primary Circuit, DTC P0353: Ignition Coil #3 Primary Circuit, DTC P0354: Ignition Coil #4 Primary Circuit, DTC P0355: Ignition Coil #5 Primary Circuit, DTC P0356: Ignition Coil #6 Primary Circuit, DTC P0357: Ignition Coil #7 Primary Circuit Or DTC P0358: Ignition Coil #8 Primary Circuit: Testing

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition on. With the DRBIII® scan tool, read DTCs and record the 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. Ignition on, engine not running. With the DRBIII® scan tool, actuate the ASD relay. Using a 12-volt test light connected to ground, probe the (A142) ASD relay output circuit at the coil on plug harness connector. Does the test light illuminates brightly? Stop all actuations. If yes, go to next step. If no, go to step  8.
  3. Turn the ignition off. The following resistance measurement should be taken at 70-80°F. Measure the primary resistance of the coil on plug. Is the resistance between 0.6-0.9 of an ohm? If yes, go to next step. If no, replace the coil on plug.
  4. Turn the ignition off. Disconnect the ignition coil harness connector. Using a 12-volt test light connected to 12 volts, probe the ignition coil driver circuit. Crank the engine for 5 second while observing the test light. Does the test light blink/flicker? If yes, replace the ignition coil. If ON constantly, go to next step. IF OFF constantly, go to step  6.
  5. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between the coil control circuit and the ground circuit in the coil on plug harness connector. 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.
    6. 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.
  6. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between the coil control circuit from the coil on plug connector to the appropriate terminal of special tool (8815). Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the coil control circuit.
    7. NOTE: Before continuing, disconnect the PCM harness connectors and check the related wiring terminals for corrosion, damage or terminal push out. Repair as necessary.
  7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect both the component and the PCM connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See PROGRAMMING .
  8. Turn the ignition off. Remove the ASD relay from the PDC. Measure the resistance of the (A142) ASD relay output circuit between the relay output terminal of the PDC 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 (A142) ASD relay output circuit.
    9. NOTE: Repeat the following test for both capacitors.
    NOTE: The capacitors are attached to the side of each valve cover.
    NOTE: If the above test result is an open fuse for both capacitor tests, the problem is a short to ground in the (A142) ASD relay output circuit. Repair the short to ground in the (A142) ASD relay output circuit.
  9. Turn the ignition off. Disconnect the capacitor harness connector. Install a good INJ/COIL fuse. With the DRBIII® scan tool, actuate the ASD relay. Is the INJ/COIL fuse OK for both capacitor tests? If yes, replace the capacitor(s). If no, repair the short to ground in the (A142) ASD relay output circuit.
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