P0218-HIGH TEMPERATURE OPERATION ACTIVATED
For a complete wiring diagram Refer to Section 8W.
Theory of Operation
The DTC is intended as an informational DTC to aid the technician in determining the root cause of a customer dirveability issue. The DTC is also intended to alert the technician to determine if a cooling system malfunction has occurred or if an additional transmission air to oil cooler is needed to support the customers driving behavior.
- When Monitored:
Whenever the engine is running.
- Set Condition:
Immediately after a Overheat shift schedule is activated when the Transmission temperature exceeds 127° C or 260° F.
| Possible Causes |
| HIGH TEMPERATURE OPERATION ACTIVATED |
| TORQUE CONVERTER CLUTCH SLIPPING / NOT ACTIVATING |
| OPERATING VEHICLE WITH TRANSMISSION IN LIMP-IN MODE FOR AN EXTENDED PERIOD OF TIME |
| EXCESSIVE TIME IDLING IN GEAR |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Diagnostic Test
1.HIGH TEMPERATURE OPERATIONIf there are no possible causes remaining, view repair.
Repair
- Repair the cause of transmission overheating. Refer to the Service Information for the proper repair procedure. Make sure to check for any Service Bulletins pertaining to this problem.
- Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)