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P2322-Ignition-Coil-H-Primary-Control-Circuit-High
#1

Ignition Coil (H) Primary Control Circuit High

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil inductance and resistance. When the current is switched off, the magnetic field collapses which induces a secondary high voltage surge and the spark plug is fired. This high voltage surge creates a flyback voltage which the PCM uses as a feedback during the ignition diagnostics. The PCM continuously monitors the ignition system for concerns. The P2322 code sets when the PCM detects a short to voltage in the circuit.

Cause:
Faulty Ignition Coil "H"
Ignition Coil "H" harness is open or shorted
Ignition Coil "H" circuit poor electrical connection

Symptoms:
Check engine light
Engine may be running rough
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