|
|
TORQUE CONVERTER DESCRIPTION The drainback valve is located in the transmission cooler outlet (pressure) line. OPERATION The valve prevents fluid from draining from the converter into the cooler and lines when the vehicle STANDARD PROCEDURE - TORQUE The converter drainback check valve is located in the cooler outlet (pressure) line near the radiator The valve is serviced as an assembly; it is not repairable. Do not clean the valve if restricted, or and metal shavings, the valve must be replaced. The valve must be removed whenever the cooler and lines are reverse flushed. The valve can be flow If the valve is restricted, installed backwards, or in the wrong line, it will cause an overheating condition CAUTION: The drainback valve is a one-way flow TRANSMISSION RANGE DESCRIPTION The Transmission Range Sensor (TRS) (Fig. 251) has 3 primary functions: • Provide a PARK/NEUTRAL start signal to the engine controller and the starter relay. • Turn the Back-up lamps on when the transmis- sion is in REVERSE and the engine (ignition) is on. • Provide a transmission range signal to the instrument cluster. Fig. 251 Transmission Range Sensor 21 - 208 AUTOMATIC TRANSMISSION - 42RE AN |