Pinpoint Test K: Turbine Shaft Speed Sensor

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

K1 READ AND RECORD ALL DTCS
- Connect the scan tool.
- Read and record all DTCs.
Were DTCs P0715, P0717, P0718 and/or P0720 set?
- Yes : For DTCs P0715, P0717 and P0718, GO to K2 .
  For DTC P0715 and P0720, GO to K7.
- No : GO to SYMPTOM CHART .

K2 CHECK TSS SENSOR SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: Transmission Vehicle Harness C168 .
Disconnect: PCM C175T .
Inspect the connectors for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-19	VET33 (WH/OG)	C175T-16	VET33 (WH/OG)

Fig 1: Identifying Transmission Vehicle Harness Connector (C168-19)

Courtesy of FORD MOTOR CO.

Is the resistance less than 5 ohms?

Yes : GO to K3 .
No : REPAIR the circuit. CLEAR the DTCs.

K3 CHECK TSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between.

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-19	VET33 (WH/OG)	-	Ground

Fig 2: Identifying Transmission Vehicle Harness Connector (C168-19)

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10, 000 ohms?

Yes : GO to K4 .
No : REPAIR the circuit. CLEAR the DTC.

K4 CHECK TSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO POWER

Ignition ON.

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-19	VET33 (WH/OG)	-	Ground

Fig 3: Identifying Transmission Vehicle Harness Connector (C168-19)

Courtesy of FORD MOTOR CO.

Is any voltage present?

Yes : REPAIR the circuit. CLEAR the DTC.
No : GO to K5 .

K5 CHECK THE TSS SENSOR GROUND CIRCUIT

Ignition OFF.
Connect: PCM C175T .
Ignition ON.

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-19	VET33 (WH/OG)	C168-9	RET24 (BN/BU)

Fig 4: Identifying Transmission Vehicle Harness Connector (C168-19)

Courtesy of FORD MOTOR CO.

Is voltage less than 4.8 volts?

Yes : REPAIR the circuit. CLEAR the DTC.
No : GO to K6 .

K6 CHECK THE SOLENOID BODY SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.
Remove the main control cover. REFER to MAIN CONTROL COVER .
Disconnect: TSS Sensor.

Measure the component side resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
19	-	3	-

Fig 5: Identifying TSS Sensor Connector Terminals (19, 3)

Courtesy of FORD MOTOR CO.

Is the resistance greater than 0.5 ohms?

Yes : INSTALL a new solenoid body assembly. REFER to SOLENOID BODY ASSEMBLY . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to SOLENOID BODY STRATEGY DOWNLOAD . PERFORM the Solenoid Body Strategy Drive Cycle, REFER to SOLENOID BODY STRATEGY DRIVE CYCLE .
No : INSTALL a new TSS sensor. REFER to TURBINE SHAFT SPEED (TSS) SENSOR .

K7 CHECK TSS SENSOR VPWR CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: Transmission Vehicle Harness C168 .
Inspect the connectors for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
Ignition ON.

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-20	LE111 (VT/GN)	-	Ground

Fig 6: Identifying Transmission Vehicle Harness Connector (C168-20)

Courtesy of FORD MOTOR CO.

Is the voltage less than 9.5 volts?

Yes : INSPECT and REPAIR vehicle harness circuit. CLEAR the DTCs. If an open circuit is not found, INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . PROGRAM the PCM with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. REFER to SOLENOID BODY STRATEGY DOWNLOAD . PERFORM the Solenoid Body Strategy Drive Cycle, REFER to SOLENOID BODY STRATEGY DRIVE CYCLE .
No : INSTALL a new solenoid body assembly. REFER to SOLENOID BODY ASSEMBLY . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to SOLENOID BODY STRATEGY DOWNLOAD . PERFORM the Solenoid Body Strategy Drive Cycle, REFER to SOLENOID BODY STRATEGY DRIVE CYCLE .