Pinpoint Test C : No Engagement - Both Forward And Reverse
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
- No forward and no reverse
- Check the transmission fluid level. REFER to: Transmission Fluid Level Check .
- Collect a transmission fluid sample and inspect it for signs of contamination or wear. REFER to: Preliminary Inspection .
- For vehicles equipped with a selector lever, verify proper selector lever cable installation and adjustment. REFER to: Selector Lever Cable Adjustment - 10-Speed Automatic Transmission - 10R80, Vehicles With: Column Shift . REFER to: Selector Lever Cable Adjustment - 10-Speed Automatic Transmission - 10R80, Vehicles With: Floor Shift . REFER to: Selector Lever Cable Adjustment - Raptor .
- Carry out the line pressure test. If line pressure is low, refer to the Line Pressure Diagnosis Chart for further diagnosis. REFER to: Special Testing Procedures .
- Check the A clutch for a does not apply condition. REFER to: A Clutch .
- Inspect the turbine shaft splines on the transmission input shaft and in the torque converter turbine. INSTALL new components as necessary.
- Inspect the internal transmission components for damage. INSTALL new components as necessary.
Possible Sources
- Low transmission fluid level
- Low line pressure
- Clutch fault
- Damaged turbine shaft splines
- Internal transmission components
- No forward and no reverse
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods