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Home >> Volvo >> 2011 >> C30 R-Design, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Transmission Control Module (TCM) - Specifications, Other) >> Vehicle Communication Information, Transmission Control Module (TCM) (Aw55-50/51SN; 2006-2013) >> Description Of Reading Off Extended Diagnostic Trouble Code (DTC) Information >> Description Of Frozen Values >> Input Speed
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Input Speed

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The value indicates the input speed from the transmission speed sensor. The speed can be generated with the engine idling and the gear selector in position. If the gear selector is in any other position, a gear is engaged and the transmission input shaft is connected to the output shaft and an RPM will not be indicated until the car is driven. Depending on slippage in the torque converter the transmission speed and the engine speed will differ when the lock-up function is not engaged. With lock-up engaged the transmission speed should be the same as engine speed (RPM).

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