P0351

Test 1:

Tests 2 - 6:

Tests 7 - 10:

Tests 11 - 14:

Tests 15 - 16:

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, and with 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
- ASD relay output circuit open
- Ignition coil connector observable defect
- Ignition coil # 1 wiring harness/connector intermittent defect
- Ignition coil # 1 wiring harness/connector observable defect
- Ignition coil # 1 driver circuit open
- Ignition coil # 1 driver circuit shorted to ground
- Front ignition coil (8.0L)
- Ignition coil
- Powertrain Control Module (ignition coil driver)