P0351

Tests 1 - 3:

Tests 4 - 7:

SYMPTOM
P0351 - IGNITION COIL # 1 PRIMARY CIRCUIT

WHEN MONITORED
With battery voltage greater than 8 volts during engine cranking or greater than 12 volts with engine running, engine speed less than 2016 rpm, and none of the coils in dwell when checked.

SET CONDITION
Peak current is not achieved with battery based dwell plus 1.5 msec of diagnostic offset. It takes less than 3 seconds during cranking or up to 6 seconds while running to set.

POSSIBLE CAUSES
- Wiring harness inspection
- ASD relay output circuit
- Ignition coil
- Ignition coil driver circuit open
- Ignition coil driver circuit shorted to ground
- Powertrain Control Module