User manual MITSUBISHI AUTOMATIC TRANSMISSION SERVICE SPECIFICATIONS

[. . . ] 23-1 AUTOMATIC TRANSMISSION CONTENTS SERVICE SPECIFICATIONS . 51 23109000576 Torque Converter Stall Test . 63 SHIFT LOCK AND KEY INTERLOCK MECHANISMS . 68 WARNING REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES WARNING! [. . . ] 11 TPS/APS OK: Increases in proportion to accelerator pedal opening angle. 11, 12, 14 TPS/APS system check (Refer to P. 23-13. ) Hydraulic pressure test (Refer to P. 23-55. ) D Measure the low and reverse brake pressure in R range. OK Reverse clutch system and low reverse brake system check L D Remove the transmission assembly, valve body cover and valve body. D Pistons should operate and pressure should be maintained when air is blown through the reverse clutch oil hole and low and reverse brake oil hole in the transmission case. NG Reverse clutch and low reverse brake check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. OK Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 10 Shocks when changing from N to D, N to R and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range and from N to R range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the oil pump or valve body. 23-31 Probable cause D D D Abnormal line pressure Malfunction of the oil pump Malfunction of the valve body L: Refer to the Transmission Workshop Manual. Hydraulic pressure test (Refer to P. 23-55. ) D Measure the hydraulic pressure for each element when in D range and R range. When shifting Replace the oil pump assembly. L (The oil pump cannot be disassembled. ) NG Adjust the line pressure. (Refer to P. 23-61. ) NG When starting Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. INSPECTION PROCEDURE 11 Shocks and running up If shocks occur when driving due to upshifting or downshifting and the transmission speed becomes higher than the engine speed, the cause is probably abnormal line pressure or a malfunction of a solenoid valve, oil pump, valve body or of a brake or clutch. Probable cause D D D D D Abnormal line Malfunction of Malfunction of Malfunction of Malfunction of pressure each solenoid valve the oil pump the valve body each brake or each clutch L: Refer to the Transmission Workshop Manual. MUT-II Actuator test D No. 4 Overdrive solenoid valve OK: Sound of operation can be heard. (Refer to P. 23-61. ) OK Clutch and brake check L D Check for burning of the facing, defective piston seal rings and interference at the retainer. NG Replace the solenoid valve. NG Replace the oil pump assembly. L (The oil pump cannot be disassembled. ) NG Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage and slippage of O-rings, valves and valve bodies. D If the damage cannot be repaired, replace the valve body assembly. 23-32 AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 12 All points (Displaced shifting points) If all shift points are displaced while driving, the cause is probably a malfunction of the output shaft speed sensor, TPS or of a solenoid valve. Probable cause D D D D D D Malfunction of Malfunction of Malfunction of Abnormal line Malfunction of Malfunction of the output shaft speed sensor the throttle position sensor each solenoid valve pressure the valve body the A/T-ECU L: Refer to the Transmission Workshop Manual. MUT-II Data list D No. 23 Output shaft speed sensor OK: Increases in proportion to vehicle speed. 11 TPS/APS OK: Increases in proportion to accelerator pedal opening angle OK MUT-II Data list D No. 31 Low and reverse solenoid valve duty % D No. 32 Underdrive solenoid valve duty % D No. 34 Overdrive solenoid valve duty % OK: Refer to the table below. 23 - Output shaft speed sensor system (Refer to P. 23-15. ) NG Code No. 11, 12, 14 TPS/APS system check (Refer to P. 23-13. ) NG Replace the solenoid valve. [. . . ] Vehicle speed sensor connection <Vehicles with ABS> AC" 15. Drive shaft connection <LH> AC" 16. Rear roll stopper connection Stay Front member assembly Transmission mount bracket Transmission mount stopper Engine and transmission assembly supporting AF" 26. Transmission assembly lower part coupling bolts AF" "AA 27. [. . . ]