Pinpoint Test E: Pressure Control Solenoid (Pc-A) (Line Pressure) Solenoid

WARNING: This page is about a different car, the 2011 Ford F550 Super Duty and 2011 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This test should only be used if DTCs P0748, P0960, P0962 or P0963 are present.

NOTE: Read and record all DTCs.

NOTE: Refer to the Transmission Vehicle Harness Connector illustration within the TRANSMISSION CONNECTOR LAYOUTS procedure in this service information.

NOTE: Refer to the Transmission Internal Harness Connector illustration within the TRANSMISSION CONNECTOR LAYOUTS procedure in this service information.

E1 CHECK TRANSMISSION VEHICLE HARNESS FOR CONTINUITY

Ignition OFF.
Disconnect: PCM C175T.
Disconnect: Transmission Vehicle Harness C1385.
Check to make sure the transmission vehicle harness C1385 is fully seated, terminals are fully engaged in the connector and are in good condition before proceeding.

Measure the resistance between PCM C175T and C1385 using the following chart.

CIRCUIT REFERENCE CHART

Transmission Connector	Circuit	PCM
C1385-10	CET50 (WH/OG)	C175T-42
C1385-7	CET25 (BU/GN)	C175T-50

Fig 1: Measuring Resistance Between PCM C175T And C1385

Courtesy of FORD MOTOR CO.

Is resistance less than 5 ohms?

Yes: GO to E2
No: REPAIR the circuit that is open. CLEAR the DTCs. TEST the system for normal operation.

E2 CHECK TRANSMISSION VEHICLE HARNESS FOR SHORT TO GROUND

Measure the resistance between PCM C175T, harness side and ground using the following chart.

CIRCUIT REFERENCE CHART

PCM	Circuit	Ground
C175T-42	CET50 (WH/OG)	Ground
C175T-50	CET25 (BU/GN)	Ground

Fig 2: Measuring Resistance Between PCM C175T, Harness Side And Ground

Courtesy of FORD MOTOR CO.

Is resistance greater than 10,000 ohms?

Yes: GO to E3
No: REPAIR the shorted circuit. CLEAR the DTCs. TEST the system for normal operation.

E3 CHECK THE TRANSMISSION INTERNAL HARNESS FOR AN OPEN

Drain the transmission fluid.
Remove the transmission fluid pan.
Disconnect: Pressure Control Solenoid A (PCA).

Measure the resistance between transmission internal harness C1385 and the PCA solenoid using the following chart.

CIRCUIT REFERENCE CHART

Transmission Connector	Circuit	PCA Solenoid
C1385-10	Signal	2
C1385-7	Power	1

Fig 3: Measuring Resistance Between Transmission Internal Harness C1385 And PCA Solenoid

Courtesy of FORD MOTOR CO.

Is resistance less than 5 ohms?

Yes: GO to E4
No: INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.

E4 CHECK THE TRANSMISSION INTERNAL HARNESS FOR A SHORT TO GROUND

Measure the resistance between transmission internal harness C1385, component side and ground using the following chart.

CIRCUIT REFERENCE CHART

Transmission Connector	Circuit	Ground
C1385-10	Signal	Ground
C1385-7	Ignition voltage	Ground

Fig 4: Measuring Resistance Between Transmission Internal Harness C1385, Component Side And Ground

Courtesy of FORD MOTOR CO.

Is resistance greater than 10,000 ohms?

Yes: GO to E5
No: INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.

E5 CHECK THE PCA RESISTANCE
- Measure the resistance between terminals 1 and 2 at the PCA .
  
  Fig 5: Measuring Resistance Between Terminals 1 And 2 At PCA
  Courtesy of FORD MOTOR CO.
- Is resistance between 4.88-5.48 ohms?
- Yes: INSTALL a new PCM.
- No: INSTALL a new PCA . CLEAR the DTCs. TEST the system for normal operation.