Diagnostic Aids

Scan tester does not have ability to help diagnose a Code 42 problem. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.

Fig 1: Code 42 Schematic, EST Ckt Open Or Grounded (3.4L "F" Body)

Fig 2: Code 42 Flow Chart, EST Ckt Open Or Grounded (3.4L "F" Body)