Problem |
Solution |
| Low oil level |
Check transmission oil level and refill if necessary |
| Switch failure |
Verify transmission system pressure. Do Transmission System Pressure Test |
| Suction strainer is plugged |
Transmission pump may be noisy if transmission suction screen is clogged. Drain transmission. Remove and clean suction screen. Also, check condition of transmission filter. |
| Transmission pressure regulating valve is stuck or spring is broken |
Remove transmission pressure regulating valve. Inspect for damage |
| Control valve gasket failure |
Inspect transmission control valve for external leakage. Remove control valve. Inspect or replace gasket. |
| Transmission pump is failed |
Do pump flow test |
