Pinpoint Test D: Engagement Quality - Forward

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
- Delayed/soft forward
  - Check the transmission fluid level. REFER to: Transmission Fluid Level Check .
  - 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 .
  - Carry out the transmission strategy download and the adaptive learning drive cycle. REFER to: Transmission Strategy Download . REFER to: Adaptive Learning Drive Cycle .
  - Check the A clutch for a slipping apply condition. REFER to: A Clutch .
  - Check the E clutch for a slipping apply condition. REFER to: E Clutch .
  - Check low one-way clutch for a slipping condition. REFER to: Low One-Way Clutch Assembly .
- Harsh forward
  - Carry out the transmission strategy download and the adaptive learning drive cycle. REFER to: Transmission Strategy Download . REFER to: Adaptive Learning Drive Cycle .
  - Carry out the line pressure test. If line pressure is high, refer to the Line Pressure Diagnosis Chart for further diagnosis. REFER to: Special Testing Procedures .
  - Check the E clutch for a harsh apply condition. REFER to: E Clutch .
  - Check the A clutch for a delayed apply condition. REFER to: A Clutch .
  - Check low one-way clutch for damage. REFER to: Low One-Way Clutch Assembly .
- Neutral after launch
  - Check the low one-way clutch for a slipping condition. REFER to: Low One-Way Clutch Assembly .
- Slip on hard acceleration in 1A and 2A
  - Check the low one-way clutch for a slipping condition. REFER to: Low One-Way Clutch Assembly .
- Harsh/soft/delayed engagement after start/stop restart
  - Inspect the transmission fluid auxiliary pump, seals, and hydraulic passages for damage, blockage or leaks. CLEAN or INSTALL new components as necessary. REFER to: Transmission Fluid Auxiliary Pump .
Possible Sources
- Corrupted transmission strategy
- Low transmission fluid level
- Low or high line pressure
- Clutch fault
- Transmission fluid auxiliary pump fault
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods