Circuit Description

The electronic ignition system uses an individual ignition coil for each cylinder. Powertrain Control Module (PCM) controls ignition operation through 8 individual Ignition Control (IC) circuits. Each bank of 4 ignition coils is connected to PCM, power, or ground by the following circuits:

• Low Reference
• Chassis Ground
• Ignition 1 Voltage
• Appropriate IC Circuit

PCM triggers an ignition coil by grounding appropriate IC circuit using information from Crankshaft Position (CKP) and Camshaft Position (CMP) sensors.