Pinpoint Test X : Output Shaft Speed Sensor

X1 RETRIEVE AND RECORD ALL DTCS

Using the diagnostic scan tool, retrieve all DTCs.

Are DTCs P0720, P0721, P0722 and/or P0715 present?

Yes	For DTCs P0720, P0721 and P0722, GO to X2. For DTC P0720 and P0715, GO to X7.
No	GO to Symptom Chart .

X2 CHECK OSS SENSOR SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: Transmission Vehicle Harness C168 .

Disconnect: PCM C1551E .

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	RET04 (YE/OG)	C1551E-12	RET04 (YE/OG)

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Is the resistance less than 3 ohms?

Yes	GO to X3.
No	REPAIR the circuit.

X3 CHECK OSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between.

Positive Lead		Negative Lead
Pin	Circuit	Pin	Circuit
C168-10	RET04 (YE/OG)	-	Ground

Courtesy of FORD MOTOR COMPANY

Is the resistance greater than 10, 000 ohms?

Yes	GO to X4.
No	REPAIR the circuit. If a short to ground is not found, INSTALL a new PCM. REFER to Electronic Engine Controls . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .

X4 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	RET04 (YE/OG)	-	Ground

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Is any voltage present?

Yes	REPAIR the circuit. If a short to power is not found, INSTALL a new PCM. REFER to Electronic Engine Controls . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .
No	GO to X5.

X5 CHECK THE OSS SENSOR GROUND CIRCUIT

Ignition OFF.

Connect: PCM C1551E .

Ignition ON.

Measure the voltage between.

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

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Is voltage less than 4.8 volts?

Yes	REPAIR the circuit. If an open circuit is not found, INSTALL a new PCM. REFER to Electronic Engine Controls . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .
No	GO to X6.

X6 CHECK THE SOLENOID BODY SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.

Remove the main control cover. REFER to Main Control Cover - 3.5L GTDI .

Disconnect: OSS Sensor.

Measure the component side resistance between.

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

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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 .
No	INSTALL a new OSS sensor. REFER to Output Shaft Speed (OSS) Sensor .

X7 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

Courtesy of FORD MOTOR COMPANY

Is the voltage less than 10 volts?

Yes	REPAIR the circuit. If an open circuit is not found, INSTALL a new PCM. REFER to Electronic Engine Controls . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .
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 .