I _ Pressure Testing (Cont'd) o if oil leaks at or around low and reverse brake clrcun, llne pressure becomes low in "R or "P" range but is normal in D", "2 or "1" range 3) When line pressure IS hlgh while ldllllg, pressure regulator valve may have sruck If llne pressure does nm rise, first check in make sure thaI throule wire is connected properly. LOCK-UP TEST Install pressure gauge re port j , Shift selecwr lever in "D" ranger If lock-up pressure, which is outlined under Vehicle Speed and Line Pressure When Shifting Gears' is not within suecifications, refer to Troubleshooting chart (.lv AT-64