General Information

The Electronic Ignition (EI) system consists of the following components and wiring circuits:
^ The Ignition Control (IC) module
^ The ignition coils
^ The Powertrain Control (PCM) Module
^ The Crankshaft Position (CKP) sensor
^ The Camshaft Position (CMP) sensor

The EI wiring circuits listed here use service common names, they are as follows: Between the IC module and the PCM.
^ Medium resolution engine speed signal
^ Low resolution engine speed signal
^ Camshaft position signal
^ IC timing control
^ IC timing signal
^ Low reference

Between the CKP sensor and the IC module:
^ CKP sensor 1 signal
^ CKP sensor 2 signal

Between the CMP and the IC module:
^ CMP sensor signal
^ Low reference
^ 10 volt reference

The CMP voltage and low reference circuits are shared with the CKP sensor.

The IC module is also supplied with the following:
^ Ignition (1) voltage
^ Ground