Download Free BMW Transmission Specifications.pdf Input (Turbine) and output Speed Sensors. Analog inductive sensors that produce an A/C sine wave similar to an ABS/ASC wheel speed sensor. The signal frequency is proportional to the rotation speed of the monitored component. The speed sensors are used to monitor clutch slip for plausibility and shift points as well as maintaining adaptive hydraulic pressures. Transmission Oil Temperature Sensor: NTC resistor provides a variable voltage drop proportional to transmission oil temperature. For most systems, the NTC is soldered into the oil temp circuit of the wiring harness located in the transmission oil sump. The A5S 360R transmission contains a replaceable NTC plug in resistor probe that is clipped to a bracket and immersed in oil in the sump.
These components are monitored statically and dynamically by the TCM and will set specific fault codes if the sensor or it’s circuit becomes impaired. However, the components and their circuits to the TCM can be simultaneously checked during diagnosis. The following pages provide specific locations of the components within the transmissions.
The TCM controls the hydraulic valve body by activating specific electrical solenoids and pressure regulators. The component locations within a transmission in relation to activation of shift components (multi plate clutches and brakes, band brakes, freewheels) control and direct the powerflow through the planetary gearset(s) providing various output ratios. By design, each transmission manages powerflow uniquely with a common goal of providing progressive output ratios.
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These components are monitored statically and dynamically by the TCM and will set specific fault codes if the sensor or it’s circuit becomes impaired. However, the components and their circuits to the TCM can be simultaneously checked during diagnosis. The following pages provide specific locations of the components within the transmissions.
The TCM controls the hydraulic valve body by activating specific electrical solenoids and pressure regulators. The component locations within a transmission in relation to activation of shift components (multi plate clutches and brakes, band brakes, freewheels) control and direct the powerflow through the planetary gearset(s) providing various output ratios. By design, each transmission manages powerflow uniquely with a common goal of providing progressive output ratios.
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