Shift Concerns: 2-1 Shift (Automatic)
| Possible Component | Reference/Action |
|---|---|
| 225 - ELECTRICAL ROUTINE | |
| Powertrain Control System | |
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids | Carry out Self-Test. See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles for diagnosis and testing of the Powertrain Control System. GO to PINPOINT TEST A . Repair as required. Clear DTCs, road test and repeat Self-Test. |
| 325 - HYDRAULIC/MECHANICAL ROUTINE | |
| Incorrect Pressures | |
| Intermediate clutch | Check pressure at intermediate clutch tap. Refer to the CLUTCH PRESSURE TEST CHARTS for specifications. Refer to SPECIAL TESTING PROCEDURES . If not within specifications, check main controls and pump. |
| Main Controls | |
| 1 - 2 shift valve, 1 - 2 accumulator solenoid pressure regulator valve stuck, damaged or assembled wrong | Inspect for damage. Repair as required. |
| Bolts not tightened to specifications | Tighten bolts to specifications. |
| SSA malfunction | Activate solenoid using diagnostic tool. If solenoid operation cannot be felt when placing hand on solenoid, install a new solenoid. Inspect O-rings for damage; repair as required. |
| Gaskets damaged | Inspect for damage and install a new gasket. |
| Pump | |
| Gaskets damaged | Inspect for damage and install a new gasket. |
| Porosity/cross leaks | Inspect for leak/porosity. Install a new pump as required. |
| Intermediate Clutch Assembly | |
| Piston damaged | Inspect for damage. Repair as required. |
| Friction elements damaged, worn | Inspect for damage. Repair as required. |
| End clearance incorrect | Inspect and correct. Refer to ASSEMBLY . |
| Intermediate One-Way Clutch | |
| Damaged | Inspect for damage. Repair as required. |
| Intermediate one-way clutch retaining snap ring not seated | Inspect for damage. Repair as required. |
| Planetary One-Way Clutch | |
| Not holding or damaged | Inspect for damage. Repair as required. |
SHIFT CONCERNS: 2-1 SHIFT (AUTOMATIC)