Diagnostic Aids

When PCM is in backup fuel, fast idle and poor performance problems will exist. Check for good connections at crankshaft position sensor and PCM.

Fig 1: DTC 19 Schematic ("G" Series) Crankshaft Position Reference Error

Fig 2: DTC 19 Schematic ("P" Series) Crankshaft Position Reference Error

Fig 3: DTC 19 Flow Chart ("G" & "P" Series) Crankshaft Position Reference Error