Diagnostic Aids

An intermittent may be caused by a poor connection, rubbed-through wire insulation or a wire broken inside insulation. Also, check for backed-out connector terminals or broken insulation spark reference circuit. If everything checks okay, try wiggling related wiring harness and connectors while engine is idling. This may help to isolate location of malfunction.

Fig 1: Code 17, Schematic, RPM Signal Problem, Riviera

Fig 2: Code 17, Schematic, RPM Signal Problem, Toronado & Trofeo

Fig 3: Code 17, Flow Chart, RPM Signal Problem

Fig 4: Code 17