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Home >> Saturn >> 1997 >> SW2 Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - Mp6 & Mp7 >> Diagnostic Testing >> DTC P0766: 4TH Gear Actuator Circuit Grounded/Open >> Diagnostic Aids

Diagnostic Aids

Ensure transaxle connector is clean and tight. An open circuit between PCM and actuator will result in 4th gear to be stuck on. A grounded circuit between PCM and actuator will result in no 4th gear.