Mitsubishi Eclipse II technical information manual page 194

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 2-81 TRANSMISSION CONTROL MODULE OUTPUT SIGNALS AND DEVICES / The TCM takes the input information from thesen- sembly. The following items are output components sors, evaluates the input, then uses it to control L operated by the TCM. the transmission control relay and the solenoidas- Transmission Control Relay The instant the ignition is turned on, the TCM performs a self-test to determine if its internal electronic circuits are all working properly. If the self-test results are good, the TCM sends battery voltage to the transmission control relay. The relay closes its internal contacts which then supply battery voltage to the TCM (confirms function of the relay), the four solenoids and the three pressure switches in the solenoid assembly. If the TCM “sees” a problem in the system, it turns off the power feed to the transmission control relay, causing the contacts to open. A diagnostic trouble code is then stored in memory. The trans- mission control relay is located in various places depending on the vehicle model. It can be located directly on the TCM or in the harness near the TCM. Solenoid and pressureSolenoid Assembly When the transmission control relay contact points are closed, the solenoid assembly receives electrical power. The TCM can now operate the solenoids, as determined by its program- ming. The relay provides power to all four solenoids through a single wire. This means that all the solenoids have voltage supplied to them whenever the transmission control relay is closed. The solenoids, however, are not energized until the TCM grounds the solenoid return wire for the solenoid that is needed. Power and Ground The ground wire from each solenoid goes back to the TCM. The TCM energlizes each solenoid by connecting the solenoid return wire to ground. Four of the wires in the8-way solenoid assembly connector are solenoid return wires. Three wires are for each pressure switch, and the last wire is the battery feed wire from the transmission control relay. The TCM controls both the power feed (through the transmission control relay) and the ground to each solenoid (through the return wires).

owners manual Mitsubishi Eclipse

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