Circuit Operation
CIRCUIT OPERATIONVehicles have electronically controlled solenoids in the automatic transmission valve body.
The Transmission Control Module (TCM) receives inputs from the Throttle Position Sensor (TPS) on circuit K22 and the stop lamp switch on circuit K29. Circuit K167 connects to the TCM to provide ground for the TPS signal. The TCM receives the transmission output speed sensor signal on circuit T14. Circuit M1 from fuse 16 in the Power Distribution Center (PDC) supplies battery voltage to the TCM. Circuit Z12 provides ground for the TCM.
The TCM powers the S1 solenoid on circuit T19, the S2 solenoid on circuit T60, and the S3 solenoid on circuit T22. The S1, S2, and S3 solenoids are case grounded.