Circuit Description
WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue and 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle is equipped with 2 separate ignition module assemblies. One assembly for each bank of cylinders. Each assembly contains an Ignition Control Module (ICM) and 3 ignition coils. Each ICM consists of an ignition 1 voltage circuit, ground circuit, IC timing low reference circuit and IC control circuits for cylinders No. 1-6. Each ignition coil connects directly to its spark plug via a short boot. The IC circuits transmit timing pulses from the Powertrain Control Module (PCM) to the ICMs, which triggers the coils to fire the plugs in the correct sequence. The PCM monitors each IC circuit for improper voltage levels. DTC P1351-P1366 will set if PCM detects an incorrect voltage potential on the ignition control circuit.