Pinpoint Test E : OSS (Output Shaft Speed) Sensor

WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

E1 DRIVE CYCLE TEST

NOTE: Read and record all DTCs.

NOTE: If DTCs P0705, P0706, P0707, P0708, P0709, P1702, P1705 and/or P1921 are set, diagnose those DTCs first.
- Using the diagnostic scan tool, monitor the OSS sensor PID OSS_SRC while road testing the vehicle. Drive the vehicle so the transmission upshifts and downshifts through all the gears.
Does the OSS sensor rpm increase and decrease with engine rpm and vehicle speed?

Yes The OSS sensor is operating correctly at this time.

No GO to E2

E2 CHECK FOR TSS DTCS
- Enter the following diagnostic mode: PCM Self-Test.
Are OSS DTCs P0715, P0716, or P0717 present?

Yes GO to Pinpoint Test D

No GO to E3

E3 CHECK THE OSS SENSOR SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: PCM C1551E .

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

Disconnect Transmission Vehicle Harness C1575 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1575-15	Courtesy of FORD MOTOR COMPANY	C1551E-26

Is the resistance less than 3 ohms?

Yes

GO to E4

No	REPAIR transmission vehicle harness OSS sensor signal circuit for an open.

E4 CHECK THE OSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1575-15	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to E5

No	REPAIR transmission vehicle harness OSS sensor signal circuit for a short to ground.

E5 CHECK THE OSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO POWER

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1575-15	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage detected?

Yes	REPAIR the circuit.

No	INSTALL a new molded leadframe, REFER to: Shift Solenoids (SS) . CLEAR the DTCs.