General Information

The ignition system consists of the following components and wiring circuits:
^ The Ignition Control (IC) module
^ The ignition coil
^ The Powertrain Control Module (PCM)
^ The Crankshaft Position (CKP) Sensor
^ The Camshaft Position (CMP) Sensor
^ The distributor, the distributor cap, and the rotor

The EI wiring circuits between the CKP and PCM use the following service common names:
^ The Crankshaft Position (CKP) Sensor (1) signal
^ Low reference
^ 12-volt reference

The EI wiring circuits between the CMP and PCM use the following service common names:
^ CMP sensor signal
^ Low reference
^ 12-volt reference

The Electronic Ignition (EI) wiring circuits between the PCM, IC module, and coil use the following service common names:
^ IC timing control
^ IC output signal

The IC module and the ignition coil both receive fused power on the ignition 1 voltage circuit. The IC module is also supplied an independent ground connection.