NAG1 Automatic Transmission

TRANSMISSION TEMPERATURE SENSOR

Description






The transmission oil temperature sensor (1) is located in the shell of the electric valve control unit and is fixed to the conductor tracks. For more information, refer to NAG1 Automatic Transmission


Its purpose is to measure the temperature of the transmission oil and pass the temperature to the TCM as an input signal. It is a temperature-dependent resistor (PTC).

Operation






The temperature of the transmission oil has a considerable effect on the shifting time and therefore the shift quality. By measuring the oil temperature, shift operations can be optimized in all temperature ranges. The transmission oil temperature sensor (1) is switched in series with the park/neutral contact. The temperature signal is transferred to the TCM only when the dry-reed contact of the park/neutral contact is closed in REVERSE or a forward gear position.







Refer to the Transmission Temperature Sensor Specifications table for the relationship between transmission temperature, sensor voltage, and sensor resistance.