RAM 3500 Truck 4WD V10-8.0L VIN W (1997)
Ignition Coil: Description and Operation
Circuit Description
CIRCUIT OPERATION
These engines use two ignition coil packs. One coil pack supplies spark to cylinders 5, 8, 9, and 10. The other coil pack connects to cylinders 1, 2,
3, 4, 6, and 7.
When the Powertrain Control Module (PCM) grounds the Automatic Shut Down (ASD) relay, the contacts close and connect circuits A16 and
K125. Circuit K125 supplies battery voltage to the ignition coil packs. The PCM provides ground for each individual coil.
The PCM controls the ground path for the coil that supplies spark to cylinders 1 and 6 on circuit K19. Circuit K19 connects to cavity A7 of the
PCM.
The PCM controls the ground path for the coil that supplies spark to cylinders 2 and 3 on circuit K43. Circuit K43 connects to cavity A5 of the
PCM.
The PCM controls the ground path for the coil that supplies spark to cylinders 8 and 9 on circuit K18. Circuit K18 connects to cavity A3 of the
PCM.
The PCM controls the ground path for the coil that supplies spark to cylinders 4 and 7 on circuit K32. Circuit K32 connects to cavity A1 of the
PCM.
The PCM controls the ground path for the coil that supplies spark to cylinders 5 and 10 on circuit K17. Circuit K17 connects to cavity A9 of the
PCM
