Chart A2-3 Engine Cranks But Will Not Run

Chart A2-5 Engine Cranks But Will Not Run:

Ignition Schematic:

CIRCUIT DESCRIPTION
Before using this chart, battery condition, engine cranking speed and fuel quantity should be checked and verified as being OK. When the ignition switch is turned to the "ON" or start positions, battery voltage is applied to the ignition coil. If the ignition coil's primary coil is being toggled to ground by the Engine Control Module (ECM), a high voltage is induced in the secondary wirings or the ignition coil and is applied through the distributor to the spark plugs.

TEST DESCRIPTION
Numbers below refer to circled numbers on the diagnostic chart.

1. Checks to see if any diagnostic trouble codes are stored in ECM's memory.
2. Checks for spark at ignition coil.
3. Checks for spark at distributor.
4. Checks for spark at spark plugs.

DIAGNOSTIC AIDS
^ Water or foreign material can cause a no start during freezing weather. The engine may start after 5 or 6 minutes in a heated shop. The problem may not recur until an overnight park in freezing temperatures.
^ Low fuel pressure can result in a very lean air/fuel ratio.
^ Fouled or damaged spark plugs can cause an "engine cranks but will not run condition". For spark plug diagnosis, refer to Spark Plugs / Testing and Inspection.