Mitsubishi Eclipse II technical information manual page 190

text version of content this owner's manual page from owners manual to the vehicle Mitsubishi Eclipse, year of production 1995 - 1999:

POWER TRAIN- Automatic Transaxle TRANSMISSION CONTROL MODULE INPUTS AND SENSORS at what information it receives and how it uses that The TCM must depend on receiving information L’ in order to control shift quality. Let’s take a lookinformation. Direct Battery Voltage There is constant battery voltage supplied to theany time, it will lose the adaptive memory and have TCM, even when the ignition is turned off. Thisto re-learn the characteristics of the transaxle for optimum shift quality. battery supply is responsible for keeping theTCM’s memory alive. If the TCM loses battery voltage at Ignition Voltage When the ignition switch is turned to the OFF (col-If the self-test results are good, the TCM sends umn unlock), the RUN (on), or the Start (crank)battery voltage to the transmission control relay. positions, the TCM is activated and looks at incomingThe relay closes its internal contacts which supply battery voltage to the TCM, the four solenoids and voltage. If the voltage is above approximately 24 the three pressure switches in the solenoid assem- volts or below eight volts, the TCM automatically puts itself in default. Either voltage condition couldbly. Whenever the TCM goes into default, it de-ener- damage the TCM. gize the transmission control relay and prevents When the TCM is activated, besides checking thethe solenoids from functioning. The solenoids will incoming voltage level, it performs a self-test tothen be in de-energized positions, which cause the determine if the transmission control relay and thetransaxle to shift into second gear. solenoid assembly are performing as they should. Throttle Position Sensor The F4ACl does not use throttle pressure to control shift points like previous transaxles did. Instead, an electronic signal from the Throttle Position Sensor is used by the TCM to help deter- mine shift points and shift quality. Engine Speed Signal Engine speed is supplied to the TCM from the engine crankshaft position sensor or distributor, depending on the engine and ignition system used. This signal not only lets the TCM know the engine is running, but also lets the TCM calculate engine speed to control torque converter clutch engagement, deter- mine torque capacity, etc.

owners manual Mitsubishi Eclipse

owners manual Mitsubishi Eclipse - year of production: 1995, 1996, 1997, 1998, 1999 - Mitsubishi Eclipse II technical information manual EN