Theory Of Operation

The Transmission Control Module (TCM) monitors the operation of all pressure control solenoids. If a fault is detected during testing, the TCM will command the Clutch Cooling Flow Solenoid to a minimum flow, switch Clutch Shift Multiplex 2 Solenoid to open clutch 3, and block all not engaged gears to avoid damage to the transmission. It takes two consecutive one trip failures to set this DTC and illuminate the MIL.