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Home >> Volvo >> 2000 >> S80 Base >> Repair and Diagnosis >> Electrical >> Body Electrical >> Control Modules - Design And Function - 3 Of 3 >> Transmission Control Module (TCM) (4T65EV; 1999-2005) >> TCM diagnostic functions >> Description of parameters >> Parameters, status >> Stop (brake) lamp switch

Stop (brake) lamp switch

The engine control module (ECM) transmits a signal on the Control area network (CAN) indicating whether the stop (brake) lamp switch is activated or not. The transmission control module (TCM) uses the signal to disconnect the lock-up function when braking in order to avoid jolts in the transmission.

OFF = Stop (brake) lamp switch unaffected

ON = Stop (brake) lamp switch affected

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