The gearbox input shaft speed sensor, AF 40 (532), E39
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The gearbox input shaft speed sensor, AF 40 (532), E39
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The sensor is mounted in the valve housing in the front of the gearbox.
To measure the rotational speed of the gearbox input shaft. This value is used by the TCM (502b) to calculate the actual gear change timing and to regulate the Lock-up.
Magnetoresistance sensor with Hall effect. Uses a tooth wheel with 36 teeth for measurement.
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1.
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The output shaft wheel with output speed sensor (533).
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2.
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C2 clutch drum with input speed sensor (532).
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532 pin no.
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Signal type
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Description
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12
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Supply voltage and signal
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Connected to TCM pin 12.
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13
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Ground
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Connected to TCM pin 13.
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The speed sensor is grounded to TCM (502b), pin 13, and powered from its pin 12.
