AT2–45 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING EVALUATION Problem | Possible cause (a) Stall speed low in D and R positions. ★Engine output may be insufficient. ★Stator one–way clutch is operating properly HINT: If more than 600 rpm below the specified value, the torque converter clutch could be faulty. (b) Stall speed high in D position ★Line pressure too low. ★Forward clutch slipping ★No.2 one–way clutch not operating properly ★O/D one–way clutch not operating properly (c) Stall speed high in R position. ★Line pressure too low ★Direct clutch slipping ★First and reverse brake slipping ★O/D clutch slipping (d) Stall speed high in D and R positions. ★Line pressure too low ★Improper fluid level ★O/D one–way clutch not operating properly