P128D

P128D-TCM POWER CONTROL CIRCUIT 2 OPEN





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

Battery voltage greater than 10.0 volts.

- Set Condition:
The Totally Integrated Power Module (TIPM) has detected an open condition on the Transmission Control Output circuit.





1. CHECK IF THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read TIPM DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the TIPM C10 harness connector.
3. Disconnect the PCM C1 harness connector.
4. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector.
5. Disconnect the Line Pressure Sensor/Variable Force Solenoid Assembly harness connector (4-Speed Automatic Transmission).
6. Measure the resistance of the (T16) Transmission Control Output between the TIPM C10 harness connector and PCM C1 harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Using the schematics as a guide, check the Totally Integrated Power Module (TIPM) terminals for corrosion, damage, water intrusion, or terminal push out. Check for any Service Bulletins that may apply. If no problems are found, replace and program the TIPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open in the (T16) Transmission Control Output.
- Perform the BODY VERIFICATION TEST. Body Verification Test.