Pinpoint Test H : TCC (Torque Converter Clutch) Solenoid

WARNING: This page is about a different car, the 2015 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

H1 RETRIEVE AND RECORD ALL DTCS

Using the diagnostic scan tool, retrieve all DTCs.

Are DTCs P0740, P0742, P0743, P0744 and/or P2760 present?

Yes	For DTCs P0740, P0743 and P2760, GO to H2For DTCs P0742, P0743 and P2760, GO to H5For DTC P0744, GO to H7

No	REFER to: Diagnosis By Symptom .

H2 CHECK THE TCC (TORQUE CONVERTER CLUTCH) SOLENOID CONTROL CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect Transmission Vehicle Harness C1520A .

Disconnect PCM C1915E .

Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-6	Courtesy of FORD MOTOR COMPANY	C1915E-44

Is the resistance less than 3 ohms?

Yes

GO to H3

No	REPAIR the circuit.

H3 CHECK THE TCC (TORQUE CONVERTER CLUTCH) SOLENOID CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
Component side resistance pin 5.	Courtesy of FORD MOTOR COMPANY	Component side resistance pin 6.

Is the resistance between 4.0 and 7.2 ohms?

Yes	INSTALL a new PCM. Refer to: Powertrain Control Module (PCM) . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .

GO to H4

H4 CHECK THE TCC (TORQUE CONVERTER CLUTCH) SOLENOID RESISTANCE

Remove the transmission internal wiring harness frame. Refer to: Transmission Internal Wiring Harness Frame . Inspect for metal shavings on the exposed metal contacts or other components and clean the solenoid and transmission internal wiring harness frame terminals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
TCC Solenoid pin A.	Courtesy of FORD MOTOR COMPANY	TCC Solenoid pin B.

Is the resistance between 4.0 and 7.2 ohms?

Yes	INSTALL a new transmission internal wiring harness frame. Refer to: Transmission Internal Wiring Harness Frame .

No	INSTALL a new TCC solenoid. Refer to: Solenoid .

H5 CHECK THE TCC (TORQUE CONVERTER CLUTCH) SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Transmission Vehicle Harness C1520A .

Disconnect PCM C1915E .

Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-6	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to H6

No	REPAIR the circuit.

H6 CHECK THE TCC (TORQUE CONVERTER CLUTCH) SOLENOID FOR A SHORT TO GROUND

Remove the transmission internal wiring harness frame. Refer to: Transmission Internal Wiring Harness Frame . Inspect for metal shavings on the exposed metal contacts or other components and clean the solenoid and transmission internal wiring harness frame terminals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
TCC Solenoid pin A.	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	INSTALL a new TCC solenoid. Refer to: Solenoid .

No	INSTALL a new transmission internal wiring harness frame. Refer to: Transmission Internal Wiring Harness Frame .

H7 CHECK THE TCC (TORQUE CONVERTER CLUTCH) SOLENOID CONTROL CIRCUIT FOR A SHORT TO POWER

Ignition OFF.

Disconnect Transmission Vehicle Harness C1520A .

Disconnect PCM C1915E .

Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-6	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

No	INSTALL a new PCM. Refer to: Powertrain Control Module (PCM) . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .