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Home >> Volvo >> 2001 >> V70 XC >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Bulbs, Control Modules, Charging - Design And Function >> Rear Electronic Module (Rem) (2005-2007) >> Design >> Back-up lamp
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Back-up lamp

Fig 1: Identifying Rear Fog Lamp And Back-Up Lamp
GLL105966Courtesy of VOLVO CARS OF NORTH AMERICA.

There are two back-up (reversing) lamps. These are in the tail lamps. The back-up (reversing) lamp lights when back-up (reverse) gear is selected. The back-up (reversing) lamps are connected to the rear electronic module (REM) via an internal directly connected relay. The lamps are powered via the relay.

Cars with manual transmissions 

Cars with manual transmissions have a back-up (reverse) switch on the transmission. The switch closes and transmits a directly connected signal to the central electronic module (CEM) when back-up (reverse) gear is selected.

Cars with automatic transmissions 

In cars with automatic transmissions, a signal is transmitted from the transmission control module (TCM) on the controller area network (CAN) to the central electronic module (CEM) indicating that back-up (reverse) gear is selected.

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