TEST
ACTION
APPLICABILITY
7
Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and Transmission Control Relay
Output circuit in the Transmission Control Relay connector.
Ignition on, engine not running.
Measure the voltage of the Output Speed Sensor Signal circuit.
Is the voltage above 0.5 volts?
All
Yes
→ Repair Output Speed Sensor Signal circuit short to voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 8
8
Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Speed Sensor Ground circuit from the TCM harness
connector to the Output Speed Sensor harness connector.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Speed Sensor Ground circuit for an open.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 9
9
Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and the Transmission Control
Relay Output circuit in the Transmission Control Relay connector.
Ignition on, engine not running.
Measure the voltage of the Speed Sensor Ground circuit.
Is the voltage above 0.5 volts?
All
Yes
→ Repair the Speed Sensor Ground circuit for a short to voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 10
10
Using the schematics as a guide, inspect the wiring and connectors. Repair as
necessary. Pay particular attention to all power and ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Transmission Control Module per the Service Infor-
mation. WITH THE DRBIII
t PERFORM QUICK LEARN AND
REPROGRAM PINION FACTOR.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
53
TRANSMISSION - EATX
P0720-OUTPUT SPEED SENSOR ERROR —
Continued