P2783

P2783-TORQUE CONVERTER TEMPERATURE TOO HIGH

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

Theory of Operation

The Transmission Control Module (TCM) monitors the friction loss of the torque converter clutch while it is in slipping mode. The TCM calculates friction loss using CAN communication signals such as, engine speed and engine torque, as well as the torque converter turbine speed computed by the TCM. Depending on the friction loss calculated in each program cycle, a corresponding value is added to a factor as long as the torque converter clutch is in slipping mode. The factor is set to 0 when the clutch is opened. If the factor reaches a specified value, a DTC is set.

- When Monitored:
When the solenoid supply voltage is active. With no reporting Input Speed Sensor 1 or 2 (N2 - N3), CAN Bus, PCM, CAN Engine, and/or CAN Engine Speed DTCs present. Torque Converter Clutch in slip mode.

- Set Condition:
When the friction loss factor reaches a predetermined threshold.





Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. NAG1 Pre-Diagnostic Troubleshooting Procedure.
CHECK FOR AN INTERNAL TRANSMISSION PROBLEM
1. This DTC is an informational DTC.
2. Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
3. This is usually a sign of Torque Converter Clutch failure or an internal transmission problem.
4. Check the Engine and Transmission Cooling Systems for proper operation.

Repair

- Repair internal Transmission, Torque Converter, and/or Transmission and Engine Cooling systems as necessary.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.