Pinpoint Test N: DTC C1289 - Pressure Transducer Redundant/Secondary Input Circuit Failure

WARNING: This page is about a different car, the 2002 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When diagnosing this DTC, the main/primary pressure transducer is the C148 pin 1, circuit 9-CF65 (BN/WH). The pressure transducer connectors can be connected to either the main or the redundant pressure transducer and still operate correctly, therefore the wire color must be looked at before continuing diagnostics.

Fig 1: Pinpoint Test N: DTC C1289 - Pressure Transducer Redundant/Secondary Input Circuit Failure (Steps N1 & N2)

Courtesy of FORD MOTOR CO.

Fig 2: Pinpoint Test N: DTC C1289 - Pressure Transducer Redundant/Secondary Input Circuit Failure (Steps N2 Cont. & N3)

Courtesy of FORD MOTOR CO.

Fig 3: Pinpoint Test N: DTC C1289 - Pressure Transducer Redundant/Secondary Input Circuit Failure (Steps N3 Cont. & N5)

Courtesy of FORD MOTOR CO.

Fig 4: Pinpoint Test N: DTC C1289 - Pressure Transducer Redundant/Secondary Input Circuit Failure (Step N5 Cont.)

Courtesy of FORD MOTOR CO.