Part I

ENGINE CRANKS BUT WILL NOT RUN 2.3L (VIN D, A & 3) "N" CARLINE










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 step verifies that MIL operation, on-board diagnostics, cranking RPM, TP sensor, MAP sensor and ECT sensor signals are normal. A blinking injector test light verifies that the PCM is receiving the 7X reference signal and is attempting to activate the injectors.
2. Damage to a PCM injector driver may occur if any injector is shorted internally. CHART C-2A Will diagnose a faulty injector.
3. By installing spark plug jumper leads and testing for spark on all 4 plug leads, each ignition coil's ability to produce at least 25,000 volts is verified.
4. Checks to see if fuel pump and relay are operating correctly (fuel pump only "ON" 2-3 seconds) and fuel pressure is within proper range.
5. If module can make the test light blink, the fault is coil harness or connections. If not, module or it's connections are faulty.

Diagnostic Aids:
Check for:
* TP sensor binding or sticking in Wide Open Throttle (WOT) position or intermittently shorted or open.
* Water or foreign material in fuel.
* Low compression (timing chain failure).
* Verify that only resistor spark plugs are used.