Engagement Concerns: Harsh Forward and Reverse
DIAGNOSTIC ROUTINES ENGAGEMENT CONCERNS: HARSH FORWARD AND REVERSE
| Possible Component | Reference/Action |
|---|---|
| 208 - ELECTRICAL ROUTINE | |
| Powertrain Control System | |
| PCM, vehicle wiring harnesses, TR sensor, transmission fluid temperature (TFT) sensor, SSC, and SSD. | Carry out on-board diagnostic tests. Refer to the SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article for diagnosis and testing of the PCM. |
| Carry out Pinpoint Tests A, B, and C, refer to PINPOINT TEST A: SHIFT AND TORQUE CONVERTER CLUTCH SOLENOIDS (ONLY) , PINPOINT TEST B: TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR and PINPOINT TEST C: TRANSMISSION RANGE (TR) SENSOR . | |
| Repair as required. Clear the DTCs, road test and rerun on-board diagnosis test. | |
| 308 - HYDRAULIC/MECHANICAL ROUTINE | |
| Fluid | |
| Incorrect level. | Adjust to correct level, refer to CHECK FLUID LEVEL . |
| Condition. | Carry out Fluid Condition Check, refer to CHECK THE FLUID CONDITION . |
| Incorrect Pressures | |
| High pressures. | Check pressure at Line tap. |
| Carry out LINE PRESSURE TEST . Follow pressure diagnosis and repair as required. | |
| Main Control | |
| Bolts not tightened to specification. | Tighten to specifications. |
| Separator plate damaged. | Inspect for damage. If damaged, repair as necessary. |
| Contamination. | Disassemble and clean. |
| Valves/springs damaged, misassembled, missing, stuck, or bore damaged. | If damaged or parts are missing, install a new main control assembly. If misassembled, reassemble correctly. DO NOT stone, file or sand valves. This will remove the anodized finish and may result in further main control or transaxle damage. |
| Forward Clutch Assembly | |
| Seals, piston damaged. | Inspect for damage. Repair as necessary. |
| Friction elements damaged or worn. | Inspect for damage. Repair as necessary. |
| Return springs damaged. | Inspect for damage. Repair as necessary. |
| Reverse and Low/Reverse Clutch Assembly | |
| Seals, piston damaged. | Inspect for damage. Repair as necessary. |
| Check balance dam. | Inspect for damage. Repair as necessary. |
| Friction elements damaged or worn. | Inspect for damage. Repair as necessary. |
| Return springs damaged. | Inspect for damage. Repair as necessary. |
| One way clutch | Inspect for damage. Repair as necessary. |