Chart 2 Engine Cranks But Won't Start

Chart II - Engne Cranks But Won't Run:

Chart II - Engine Cranks But Won't Run, (Cont'd):

Wiring Diagram:

CHART II


ENGINE CRANKS BUT WON'T START
Spark is delivered from a electronic ignition (EI) system. In order to diagnose this system, battery voltage must be above 11 volts. Cranking speed of the starter must be normal and fuel quality should be checked.

PARAMETERS
No start due to no spark or RPM signal.
No start due to low or no fuel pressure.

DIAGNOSTIC AIDS
Water in the fuel can cause a no start during cold weather starts.

An ECT sensor reading incorrectly can cause a no start or a hard start. This may be due to over-fueling or under-fueling.

ECT may be compared to IAT temperature with scan tool if engine has cooled overnight at ambient temperature. They should be within four degrees of each other with ignition On and key Off.

A shorted injector will cause a no start condition.

A short to ground of the map sensor 5 volt line can cause a no start. Check all of the 5 volt reference signals (Circuit 416).