TEST
ACTION
APPLICABILITY
3
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
NOTE: Check connectors - Clean/repair as necessary
Measure the resistance of the Output Speed Sensor ground circuit between the PCM
harness connector and the Output Speed Sensor harness connector.
Is the resistance below 5.0 ohms?
without 45RFE
AUTO TRANS
Yes
→
Go To
4
No
→
Repair the Output Speed Sensor negative ground circuit for an
open.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
4
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Check connectors - Clean/repair as necessary
Measure the resistance between ground and the Output Speed Sensor ground circuit.
Is the resistance below 5.0 ohms?
without 45RFE
AUTO TRANS
Yes
→
Repair the Output Speed Sensor ground circuit for a short to
ground.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Go To
5
5
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Check connectors - Clean/repair as necessary
Measure the resistance between ground and the Output Speed Sensor Signal circuit.
Is the resistance below 5.0 ohms?
without 45RFE
AUTO TRANS
Yes
→
Repair the Output Speed Sensor Signal Positive circuit for a short
to ground.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Go To
6
6
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Check connectors - Clean/repair as necessary
Measure the resistance of the Output Speed Sensor Signal circuit between the PCM
harness connector and the Output Speed Sensor harness connector.
Is the resistance below 5.0 ohms?
without 45RFE
AUTO TRANS
Yes
→
Go To
7
No
→
Repair the Output Speed Sensor Signal circuit for an open.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
104
DRIVEABILITY - DIESEL
P0720-LOW OUTPUT SPD SENSOR RPM, ABOVE 15 MPH —
Continued