High Transmission Fluid Level

6F50 / 6F55

Preliminary Inspection









The following items must be checked prior to beginning the diagnostic procedures.



Verification of Condition

This provides information which must be used in both determining the actual cause of customer concerns and carrying out the appropriate procedures.

The following procedures must be used when verifying customer concerns for the transmission.

Determine Customer Concern

NOTE: Some transaxle conditions may cause engine concerns. An electronic pressure control short circuit can cause engine misfiring. The Torque Converter Clutch (TCC) not disengaging will stall the engine.

Determine customer concerns relative to vehicle use and dependent driving conditions, paying attention to the following items:

- Hot or cold vehicle operating temperature
- Hot or cold ambient temperatures
- Type of terrain
- Vehicle loaded/unloaded
- City/highway driving
- Upshift
- Downshift
- Coasting
- Engagement
- Noise/vibration - check for dependencies, either rpm dependent, vehicle speed dependent, shift dependent, gear dependent, range dependent or temperature dependent.



High Transmission Fluid Level

NOTICE: Transmission fluid level above the "MAX" level may cause shift/engagement concerns or transmission damage.

If the transmission fluid level is above the "MAX" range on the transmission fluid level indicator, remove the drain plug and allow the fluid to reach the hashmark level. For additional information refer to Transmission Fluid Drain and Refill Transmission Fluid Drain and Refill.

High transmission fluid levels can be caused by an overheating condition. If the vehicle has been operated for an extended period of time at high speeds, in city traffic during hot weather or pulling a trailer, the vehicle should be turned off until normal operating temperature, 82°C-93°C (180°F-200°F) is reached as indicated by the scan tool.