Part 3 of 4

Chart A-3 Engine Cranks But Will Not Run (Part 3 Of 4):

Electronic Ignition Wiring Circuit:

Condition:

Engine cranks but will not run, or engine may start, but immediately stops running. Battery condition and engine cranking speed are OK and there is adequate fuel in the tank.

Circuit Description:

This engine is equipped with a distributorless ignition system called the Electronic Ignition (EI) system. The primary circuit of the EI system consists of two separate ignition coils, an electronic Ignition Control Module (ICM) and Crankshaft Position (CKP) sensor as well as the related connecting wires and the Ignition Control (IC) portion of the PCM. Each secondary circuit consists of the secondary winding of the coil, two connecting metal strips molded into the coil housing, the spark plug boot/connector assemblies and spark plugs.

Chart Test Description: Number(s) below refer to circled number(s) on the diagnostic chart.

10. Battery voltage should be available at terminal "C" of the CKP sensor harness, and terminal "B" should be a good ground.
11. By grounding the test light to terminal "B" and the other end of test light to B+ ensures the integrity of the ground.
12. The 7X reference circuit should go as high as 256 counts, before starting back at 0. At this point it is important that the 7X circuit is incrementing.
13. Thoroughly examine CKP sensor connection. It should be free of corrosion and contaminants, and pins should be making proper contact.