The powertrain control module monitors the voltage across the transmission fluid temperature sensor to determine the temperature of the transmission fluid. The resistance value of the transmission liquid temperature sensor will vary with temperatures change. It is a temperature-sensitive device called a thermistor.
The transmission fluid temperature (TFT) sensor is located on the solenoid body assembly in the transmission sump. All are part of the transmission solenoid body and are not replaced individually. These solenoids and transmission fluid temperature sensor are housed in the transmission solenoid body assembly. The powertrain control module controls the transmission operation through three on/off shift solenoids, one pulse width modulated (PWM) shift solenoid, and one variable force shift solenoid. The YCM uses the OSS sensor signal to help determine EPC pressure, shift scheduling and torque converter clutch (TCC) operation. The OSS sensor is mounted externally on the top of the transmission extension housing. The output shaft speed (OSS) sensor is a magnetic pickup that provides transmission output shaft rotation speed information to the powertrain control module. The PCM uses TSS sensor signals to help determine EPC pressure, shift scheduling the torque converter clutch (TCC) operation. The turbine shaft speed (TSS) sensors a magnetic pickup that sends the PCM information on the rotation speed of the coast clutch cylinder assembly The TSS sensor is mounted externally on the top of the transmission case. After processing the signal, the PSOM relays it to the PCM and the speed control module. The programmable speedometer/odometer module (PSOM) receives input from the rear brake anti-lock sensor. The TCIL indicates overdrive cancel mode activated (lamp on) and electronic pressure control (EPC) circuit shorted (lamp flashing) or monitored sensor failure. The powertrain control module energizes the transmission control indicator lamp (TCIL) when the switch is off. When the switch is pressed, a signal is sent to the powertrain control module to allow automatic shifts from first through fourth gears or first through third gears only. The transmission control switch (TCS) is a momentary contact switch. The powertrain control module then controls actuators which determine transmission operation. Many input sensors provide information to the powertrain control module. The operation of the transmission is controlled by the powertrain control module. The IAT sensor is also used in determining Electronic Pressure Control (EPC) pressures. The IAT sensor is installed in the air cleaner outlet tube. The TP sensor is used for shift scheduling, electronic pressure control, and the TCC. The TP sensor detects the position of the throttle plate and sends this information to the powertrain control module. The throttle position (TP) sensor is a potentiometer mounted on the throttle body. For transmission strategies, the MAF sensor is used to regulate Electronic Pressure Control (EPC), shift and torque converter clutch scheduling. The MAF sensor output signal is used by the powertrain control module to calculate injector pulse width. The mass air flow (MAF) sensor measures the mass of air flowing into the engine.
0 kommentar(er)
