Engine Cranks But Does Not Run

Diagnostic Chart (Part 1 Of 4):

Diagnostic Chart (Part 2 Of 4):

Diagnostic Chart (Part 3 Of 4):

Diagnostic Chart (Part 4 Of 4):

Schematic:

CIRCUIT DESCRIPTION
This engine is equipped with a ignition system called the Electronic Ignition (EI) system. The primary circuit of the EI system consists of the following items:
^ Two separate ignition coils
^ Electronic Ignition Control Module (ICM)
^ Crankshaft Position (CKP) sensor
^ Related connecting wires and the ignition control portion of the PCM

Each secondary circuit consists of the following items:
^ Secondary winding of the coil
^ Two connecting metal strips that are molded into the coil housing
^ Spark plug boot/connector assemblies
^ Spark plugs

DIAGNOSTIC AIDS
^ A small amount of resistance in the battery positive voltage circuit to the PCM may cause a no start. Test the battery positive voltage circuit for excessive resistance or corrosion. Refer to Wiring Repairs in Diagrams.
^ The PCM grounds will cause a NO START only if all of them are not making a good connection. Refer to Testing for Intermittent and Poor Connections in Diagrams.
^ Test/Inspect the Throttle Position (TP) sensor for the following conditions:
- Binding
- Sticking
- Intermittently shorted
- Intermittently open
- Refer to DTC P0105 Manifold Absolute Pressure (MAP) Sensor Performance/Range P0105
^ The ECT may be skewed within specifications and not set a code. On a cold vehicle the ECT and IAT should be 3°C or 5°F of each other. On a HOT vehicle let cool to ambient temperature then test.
^ The MAP sensor may be skewed within specifications and not set a code. Refer to DTC P0105 Manifold Absolute Pressure (MAP) Sensor Performance/Range for diagnostic testing. If the CKP sensor is loose it may cause an intermitted NO START by moving away from the reluctor wheel. Inspect the sensor and matting surface for being clean and tight. P0105

TEST DESCRIPTION
Number(s) below refer to the step number(s) on the Diagnostic Table.
4. Verify that the fuel pump runs by removing the fuel cap and listening, or by feeling the fuel rail or fuel lines on key up.
7. Repair the cause of the malfunctioning Spark plugs before replacing.
8. Inspect for basic engine malfunction like low compression, burnt valves, worn timing chain and gears, etc.
22. A short to voltage in this step will read as a negative resistance.
28. Any time the CKP sensor is removed the Crankshaft Position Variation learn procedure must be performed.
31. The replacement PCM must be reprogrammed and the Crankshaft Position Variation learn procedure must be performed.