Diagnostic Aids

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

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

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

Fig 3: Code 17, RPM Signal Problem