Secondary Battery Charging

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

The DBM also controls the charging of the secondary battery. The GWM contains electrical load management software and monitors both batteries for their state of charge. The primary battery is monitored by the BMS control module which is connected to the DBM via the LIN bus. The DBM communicates the primary battery condition to the GWM via a LIN bus connection. The GWM sends a signal to the DBM via the LIN bus to instruct it to apply charging from the generator to the secondary battery when required. The contactor 2 is closed by the DBJB to complete the secondary battery circuit, and the generator output is applied to the secondary battery to charge it.

The generator output is controlled by the GWM which monitors and controls the electrical load management system. The generator is connected to the GWM by a LIN bus allowing the GWM to control the output of the generator to maintain electrical system load requirements and battery charging. For additional information, refer to

Generator (For V8 S/C 5.0L Petrol, Description and Operation),

Generator (For V6 S/C 3.0L Petrol, Description and Operation),

Generator (For GTDi 2.0L Petrol, Description and Operation).