Diagnostic Aids

See INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE  table at various temperature levels to evaluate possibility of a "shifted" (mis-scaled) sensor. A "shifted" sensor could result in poor driveability complaints.

An intermittent condition may be caused by 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, or poor terminal-to-wire connections before component replacement.