Diagnostic Aids

Check for contaminated fuel, or poor quality fuel causing a no-start condition. Check for faulty fuel injector spray pattern. Using scan tool, check engine coolant temperature sensor. A faulty sensor can cause PCM to not deliver proper amounts of fuel to injectors. Check fuel injector resistance. Resistance should be 12-13 ohms at 68°F (20°C).

An intermittent condition may be caused by a poor connection, rubbed-through insulation, or a broken wire inside insulation. Check PCM harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal-to-wire connections before component replacement.