Circuit Description
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The electronic ignition system uses an individual ignition coil for each cylinder. The powertrain control module (PCM) controls the ignition operation through six ignition control (IC) circuits. Each ignition coil is connected to the PCM, power, or ground by the following circuits:
- The ground
- The ignition 1 voltage
- The appropriate IC control circuit
The PCM triggers an ignition coil by grounding the appropriate IC control circuit using information from the crankshaft position (CKP) and camshaft position (CMP) sensors.