P0351

Tests 1 - 2:

Tests 3 - 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, and none of the coils in dwell when checked.

SET CONDITION
Peak current is not achieved with 2.5 ms of dwell. It takes 3 seconds during cranking or up to 6 seconds while running to set.

POSSIBLE CAUSES
- ASD output circuit open
- Ignition coil # 1 connector terminal observable defect
- Ignition coil # 1 driver circuit open
- Ignition coil # 1 driver circuit shorted to ground
- Ignition coil circuit wiring harness inter defect
- Ignition coil circuit wiring harness observable defect
- Ignition coil # 1 resistance above 2.0 ohms
- PCM defective (ignition coil # 1)