43 Ignition Coil #1, #2 Primary Circuit - (P 0351, P 0352)

43 IGNITION COIL #1 PRIMARY CIRCUIT - (P 0351)

43 IGNITION COIL #2 PRIMARY CIRCUIT - (P 0352)





The Powertrain Control Module (PCM) provides the ground control circuit for the primary side of both ignition coils (coil #1 through pin 21, and coil #2 through pin 1). Battery voltage is supplied through the Automatic Shut Down (ASD) relay. The PCM energizes the ignition coil to build the magnetic field, and then de-energizes it to collapse the field around the secondary windings. The result is a high-voltage output to the spark plugs.

ENABLING CONDITIONS
- Battery voltage must be at least 10 volts
- Engine RPM must be less than 4,480

The Malfunction Indicator Lamp (MIL) is illuminated and a DTC is stored if the peak current in PCM's driver has not been reached. It takes a total of three seconds of failure to set the DTC and illuminate the MIL.

This malfunction could possibly be caused by problems with any of the following components:

- Ignition coil
- Ignition coil wiring and related connectors (open or short in the affected coil's primary circuit)
- PCM