Part 1 of 4

Chart A-3 (Part 1 Of 4):

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 Powertrain Control Module (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.

1. This verifies Malfunction Indicator Lamp (MIL) operation, on-board diagnostics, cranking RPM, Throttle Position (TP) sensor, Manifold Absolute Pressure (MAP) sensor and engine coolant sensor signals are normal. A flashing injector test light verifies the PCM is receiving a 7X reference signal and is attempting to activate the injectors.
2. The fuel pump should be switched "ON" by the PCM for 2-3 seconds after ignition is fist turned "ON." It is necessary to turn the ignition "OFF" for at least 10 seconds to assure that the PCM powers down and will then switch the fuel pump back "ON." If the fuel pump operates, but power is not available at injector harness, circuit must be open. If the fuel pump does not operate, CHART A-7 or A-5 should be used to diagnose the cause.
3. This determines whether the harness or injector is cause of incorrect resistance.
4. This verifies the injectors are receiving proper voltage to fire the injectors.
5. Also check plugs for a cracked insulator, carbon deposit buildup, and proper gap.

DIAGNOSTIC AIDS
Check for:
^ TP sensor binding or sticking in wide open throttle position or shorted or open.
^ Water or foreign material in fuel.
^ Low compression (timing chain failure).