P0351

Tests 1 - 4:

Tests 5 - 8:

Test 9:

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 rpm less than 2016, 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
- Intermittent condition
- ASD relay output circuit open
- Capacitor(s) shorted to ground
- ASD output circuit shorted to ground
- Coil on plug
- Coil driver circuit shorted to ground
- Coil driver circuit open
- Powertrain control module