Lincoln Navigator: Automatic Transmission - 10-Speed Automatic Transmission – 10R80 / Torque Converter Clutch (TCC). Diagnosis and Testing
Torque Converter Clutch (TCC)
For torque converter operation,
REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation).
| Condition | Possible Sources | Action |
| TCC does not apply | TCC solenoid mechanically stuck OFF |
INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). |
| TCC priority valve stuck OFF |
DISASSEMBLE, CLEAN and INSPECT the TCC priority valve. If the bore,
valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| TCC regulator valve stuck OFF |
DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| TCC damper missing or damaged. |
DISASSEMBLE, CLEAN and INSPECT the TCC damper. If the damper is missing or damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| Converter feed blow-off valve missing or damaged |
DISASSEMBLE, CLEAN and INSPECT the converter
feed blow-off valve. If the valve is missing or damaged, INSTALL a new
main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking |
DISASSEMBLE and INSPECT the main control valve
body and separator plate passages for debris, blockage and leaks. CLEAN
as necessary. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
|
REMOVE and INSPECT the front support assembly
and input shaft Teflon seals for damage, blockage and leaks. REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation). INSTALL new components as necessary. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
||
| TCC friction material worn or damaged |
INSTALL a new torque converter. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission - 3.0L Power Stroke Diesel (307-01D) . |
|
| TCC always applied/stalls vehicle | TCC solenoid mechanically stuck ON |
INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). |
| TCC priority valve stuck ON |
DISASSEMBLE, CLEAN and INSPECT the TCC priority valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| TCC regulator valve stuck ON |
DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| CONV FD, MDA-TCC, APPLY, REL hydraulic circuit cross leaks |
DISASSEMBLE and INSPECT the main control valve
body and separator plate passages for cracks, warping, and damage. If
damage is found, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
|
REMOVE and INSPECT the front support assembly
and input shaft Teflon seals for damage, blockage and leaks. REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation). INSTALL new components as necessary. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
||
| TCC friction material worn or damaged |
INSTALL a new torque converter. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission - 3.0L Power Stroke Diesel (307-01D) . |
|
| TCC cycles, shudders or chatters | Incorrect transmission strategy programmed into the TCM |
CARRY OUT the transmission strategy download and the adaptive learning drive cycle. REFER to: Transmission Strategy Download (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures). REFER to: Adaptive Learning Drive Cycle (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures). |
| TCC solenoid mechanically sticking |
INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). |
|
| TCC priority valve sticking |
DISASSEMBLE, CLEAN and INSPECT the TCC priority valve. If the bore,
valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| TCC Regulator Valve sticking |
DISASSEMBLE, CLEAN and INSPECT the regulator
valve. If bore or valve is damaged, INSTALL a new main control valve
body. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
| CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking |
DISASSEMBLE and INSPECT the main control valve
body and separator plate passages for debris, blockage and leaks. CLEAN
as necessary. REFER to: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
|
REMOVE and INSPECT the front support assembly
and input shaft Teflon seals for damage, blockage and leaks. REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation). INSTALL new components as necessary. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
||
| TCC friction material worn or damaged |
INSTALL a new torque converter. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission - 3.0L Power Stroke Diesel (307-01D) . |
Low One-Way Clutch Assembly. Diagnosis and Testing
Low One Way Clutch
For low one way clutch operation, REFER to: Low One-Way Clutch
Assembly (307-01 Automatic Transmission - 10-Speed Automatic
Transmission – 10R80, Description and Operation)...
Adaptive Learning Drive Cycle. General Procedures
Programming
NOTE:
Perform the adaptive learning drive cycle on a level road surface.
Using the scan tool, clear the DTCs (Diagnostic Trouble Codes) and Transmission Adaptive Tables...
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Lincoln Navigator 2018-2025 Workshop Manual: Instrument Panel Cluster (IPC) - Overview. Description and Operation
Overview The IPC uses gauges, warning and informational indicators, RTT indicators, warning messages and chimes to alert the driver of vehicle conditions and system operation. The message center provides menu selections to configure various vehicle features...
Lincoln Navigator 2018-2025 Workshop Manual: Roof Front Frame. Removal and Installation
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Wheel to Hub Runout Minimization. General Procedures
Check
NOTE: Wheel-to-hub optimization is important. Clearance between the wheel and hub can be used to offset or neutralize the Road Force® or run-out of the wheel and tire assembly. For every 0.001 inch of wheel-to-hub clearance, the Road Force® can be affected between 1 and 3 pounds depending on the tire stiffness.
NOTE: The example below illustrates how the clearance between the wheel and the hub can be used to offset the high spot of radial run-out or Road Force®. Following the procedure will make sure of the best optimization.
Position the wheel and tire assembly on the vehicle so that the high spot location of radial run-out or Road Force® is at the 6 o'clock position and