P2702-Inadequate Element Volume Od: Notes
For a complete wiring diagram , refer to appropriate SYSTEM WIRING DIAGRAMS article.
Theory of Operation
The volumes of the transmission fluid needed to apply the friction elements are continuously monitored and learned for adaptive controls. As the clutch friction material wears, the volume of fluid needed to apply the clutch increases. Certain transmission mechanical problems can cause near-zero learned volumes resulting in setting a DTC. The DTC will usually set with other DTC's, which indicates an internal transmission problem.
- When Monitored:
Whenever the engine is running. The OD clutch volume index (CVI) is updated during a 2-3 upshift with throttle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).
- Set Condition:
When the OD CVI falls below 5.
| Possible Causes |
|---|
| HYDRAULIC LEAK IN THE VALVE BODY |
| BROKEN OD ACCUMULATOR SPRING |
| BROKEN OD/REV PISTON BELLEVILLE SPRING OR DISLODGED SNAP RING |
| INTERNAL LEAKAGE IN PUMP ASSEMBLY |
| TRANSMISSION SOLENOID/TRS ASSEMBLY |
| POWERTRAIN CONTROL MODULE |
Always perform the 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.