User manual MITSUBISHI AUTOMATIC TRANSMISSION SERVICE SPECIFICATIONS

[. . . ] 68 WARNING REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES WARNING!(1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal injury or death to service personnel (from inadvertent firing of the air bag) or to driver and passenger (from rendering the SRS inoperative). (2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized MITSUBISHI dealer. (3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related component. [. . . ] 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. (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. (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. 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. L NG Replace the A/T-ECU. 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. No. 31 Driving at constant speed in 1st gear Driving at constant speed in 2nd gear Driving at constant speed in 3rd gear Driving at constant speed in 4th gear 0% 100 % 100 % 100 % No. 34 100 % 100 % 0% 0% AUTOMATIC TRANSMISSION - Troubleshooting INSPECTION PROCEDURE 13 Some points (Displaced shifting points) If some of the shift points are displaced while driving, the cause is probably a malfunction of the valve body, or it is related to control and is not an abnormality. 23-33 Probable cause D Malfunction of the valve body L: Refer to the Transmission Workshop Manual. INVECS-II CANCEL COMMAND D Use the MUT-II to stop the INVECS-II function. Yes No Does the problem occur only when the automatictransmissionfluidtemperature is - 29_C or lower or 125_C or higher?No 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 14 No diagnosis codes (Does not shift) If shifting does not occur while driving and no diagnosis codes are output, the cause is probably a malfunction of the inhibitor switch, or A/T-ECU. No Probable cause D D Malfunction of the inhibitor switch Malfunction of the A/T-ECU NG Does the transmission remain in 3rd gear with selector lever in position D?No Power supply circuit check D Pay particular attention to open circuits in the harnesses, poor connector connections and open circuits in fuses. D If there is a blown fuse, investigate why a short-circuit has occurred and then replace the fuse. MUT-II Data list D No. [. . . ] Key interlock and shift lock cable connection <Selector lever side> D Lower column cover (Refer to GROUP 37A - Steering Wheel and Shaft. ) 2. ETACS-ECU AUTOMATIC TRANSMISSION Key interlock cable Lock piece Shift Lock and Key Interlock Mechanisms 23-67 INSTALLATION SERVICE POINTS "AA KEY INTERLOCK CABLE INSTALLATION 1. After assembling the shift lock cable to the lever, pull up the key interlock cable lock piece to unlock. Then install the interlock cable end to the cam, and then install the outer cap to the lower case. [. . . ]