Line Pressure Test: Troubleshooting
TROUBLESHOOTING CHART
| Condition | Possible Cause | Action |
|---|---|---|
| Higher than standard level in each range | Malfunction of pressure control solenoid valve-A (Low line pressure) | Inspect. If NG, replace valve body assembly . |
| Malfunction of primary regulator valve (Low line pressure) | Replace valve body assembly . | |
| Lower than standard level in each range | Malfunction of pressure control solenoid valve-A (Low line pressure) | Inspect. If NG, replace valve body assembly . |
| Malfunction of primary regulator valve (Low line pressure) | Replace valve body assembly . | |
| Clogged oil strainer | Replace . | |
| Faulty oil pump | Inspect. If NG, replace . | |
| Leakage from both "D" and "R" range fluid pressure circuit | Overhaul or replace valve body assembly . | |
| Lower than standard level only in "D" range | Leakage from "D" range fluid pressure circuit | Overhaul or replace valve body assembly . |
| Faulty forward clutch | Inspect. If NG, replace . | |
| Lower than standard level only in "R" range | Leakage from "R" range fluid pressure circuit | Overhaul or replace valve body assembly . |
| Faulty reverse clutch | Inspect. If NG, replace . | |
| Faulty 1st and reverse brake | Inspect. If NG, replace . |