Shift Concerns: No 1st Gear in Drive, Engages In Higher Gear
DIAGNOSTIC ROUTINES SHIFT CONCERNS: NO 1ST GEAR IN DRIVE, ENGAGES IN HIGHER GEAR
| Possible Component | Reference/Action |
|---|---|
| 215 - ELECTRICAL ROUTINE | |
| Powertrain Control System | |
| PCM, vehicle wiring harnesses, TR sensor and SSC. | 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, and C, refer to PINPOINT TEST A: SHIFT AND TORQUE CONVERTER CLUTCH SOLENOIDS (ONLY) and PINPOINT TEST C: TRANSMISSION RANGE (TR) SENSOR . | |
| Repair as required. Clear the DTCs, road test and rerun on-board diagnosis test. | |
| 315 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | |
| High/Low Pressures. | Check pressure at Line tap. |
| Refer to the BAND/CLUTCH APPLICATION CHART to determine which gears are on. Follow the diagnostic routines to repair the missing gears. | |
| 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. |
| Low One-Way Clutch | |
| Worn, damaged or assembled incorrectly. | Inspect for damage. Repair as necessary. |