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Home >> Volvo >> 2007 >> S60 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Accessories Control Systems >> Control Modules - Design And Function - 4 Of 4 >> Transmission Control Module (TCM) (TF-80SC AWD; 2006-2007) >> Design >> Shiftlock
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Transmission Control Module (TCM) (TF-80SC AWD; 2006-2007): Design: Shiftlock

Fig 1: Identifying Shiftlock
GLL149402Courtesy of VOLVO CARS OF NORTH AMERICA.

To prevent the gear selector from being unintentionally shifted out of , the vehicle is equipped with an electronic shiftlock. This blocks the gear selector lever's retaining pin in the lock segment, holding the gear selector in the position. The gear selector can only be moved from to another gear position when the ignition is on (key position II) and the brake pedal is depressed (brake light switch actuated). The central electronic module (CEM) detects the brake pedal position via a direct connection to the brake pedal sensor. It then sends a signal to the gear selector module (GSM) to deactivate the electromagnetic solenoid in the gear selector assembly. The solenoid lock pin is pulled in and it is possible to depress the catch in the gear selector lever to select another gear. If the ignition key is in "0", the solenoid is deactivated. In this position, the gear selector is manually locked via the keylock function.