Pinpoint Test L: Output Shaft Speed Sensor

WARNING: This page is about a different variant/trim than selected.

L1 READ AND RECORD ALL DTCS
- Connect the scan tool.
- Read and record all DTCs.
- Were DTCs P0720, P0721, P0722 and/or P0715 set?
- Yes : For DTCs P0720, P0721 and P0722, GO to L2.
  For DTC P0720 and P0715, GO to L7.
- No : GO to SYMPTOM CHART .

L2 CHECK OSS 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
C168-10	VET26 (BN/GN)	C175T-25	VET26 (BN/GNG)

Fig 1: Identifying Transmission Vehicle Harness C168 And PCM Connector Terminals

Courtesy of FORD MOTOR CO.

Is the resistance less than 5 ohms?

Yes : GO to L3.
No : REPAIR the circuit. CLEAR the DTCs.

L3 CHECK OSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-10	VET26 (BN/GN)	-	Ground

Fig 2: Identifying Transmission Vehicle Harness C168 Connector Terminals

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10, 000 ohms?

Yes : GO to L4.
No : INSPECT and REPAIR the circuit. If a short to ground is not found, INSTALL a new PCM. REFER to ENGINE CONTROLS - 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 .

L4 CHECK OSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO POWER

Ignition ON.

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-10	VET24 (BN/GN)	-	Ground

Fig 3: Identifying Transmission Vehicle Harness C168 Connector Terminals

Courtesy of FORD MOTOR CO.

Is any voltage present?

Yes : INSPECT and REPAIR the circuit. If a short to power is not found, INSTALL a new PCM. REFER to ENGINE CONTROLS - 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 : GO to L5.

L5 CHECK THE OSS SENSOR GROUND CIRCUIT

Ignition OFF.
Connect: PCM C175T.
Ignition ON.

Measure the voltage between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-20	LE111 (VT/GN)	C168-9	VET24 (BN/GN)

Fig 4: Identifying Transmission Vehicle Harness C168 Connector Terminals

Courtesy of FORD MOTOR CO.

Is voltage less than 4.8 volts?

Yes : INSPECT and REPAIR the circuit. If an open circuit is not found, INSTALL a new PCM. REFER to ENGINE CONTROLS - 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 : GO to L6.

L6 CHECK THE SOLENOID BODY SIGNAL CIRCUIT FOR AN OPEN

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

Measure the component side resistance between:

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
10	-	1	-

Fig 5: Identifying Solenoid Body Signal Terminal Pins

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 OSS sensor. REFER to OUTPUT SHAFT SPEED (OSS) SENSOR .

L7 CHECK OSS 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 C168 Connector Terminals

Courtesy of FORD MOTOR CO.

Is the voltage less than 9.5 volts?

Yes : INSPECT and REPAIR the circuit. CLEAR the DTCs. If an open circuit is not found, INSTALL a new PCM. REFER to ENGINE CONTROLS - 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 .