Line Pressure Test: Troubleshooting
TROUBLESHOOTING CHART
| Condition | Possible Cause | Action |
|---|---|---|
| Higher than standard level in each range | Malfunction of pressure control solenoid valve (High line pressure) | Inspect. If NG, replace valve body assembly. |
| Malfunction of primary regulator valve (High line pressure) | Replace valve body assembly. | |
| Lower than standard level in each range | Malfunction of pressure control solenoid valve (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. | |
| Defective O/D clutch | Inspect. If NG, replace. | |
| Leakage from both "D" and "R" range fluid pressure circuit | Inspect. If NG, replace valve body assembly. | |
| Lower than standard level in "D" range | Fluid leakage from direct clutch | Inspect. If NG, replace. |
| Defective O/D clutch | Inspect. If NG, replace. | |
| Leakage from "D" range fluid pressure circuit | Inspect. If NG, replace valve body assembly. | |
| Lower than standard level in "R" range | Fluid leakage from direct clutch | Inspect. If NG, replace. |
| Defective O/D clutch | Inspect. If NG, replace. | |
| Fluid leakage from reverse brake | Inspect. If NG, replace. | |
| Leakage from "R" range fluid pressure circuit | Inspect. If NG, replace valve body assembly. |