Pinpoint Test C : TCS (Transmission Control Switch) (O/D Cancel) Circuit Out Of Self Test Range: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Transmission Controls - 6R100 for schematic and connector information. Refer to Transmission Controls - TorqShift 6 for schematic and connector information.
Normal Operation and Fault Conditions
The Tow/Haul select switch is a momentary contact switch located on the end of the selector lever. Pressing the Tow/Haul switch will engage or disengage the Tow/Haul function of the transmission. When the Tow/Haul is engaged, the Tow/Haul icon illuminates on the IPC. Each time the ignition switch is cycled, the PCM/ TCM disengages the Tow/Haul operation regardless of the switch position the last time the engine was running.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P1780 | Transmission Control Switch (O/D Cancel) Circuit Out of Self-Test Range | The Tow/Haul select switch failed during the KOER self-test. |
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- BCM fuse 19 (7.5A)
- TCS
- PCM