Dual Battery System - Normal State (Engine Running)
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.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Tandem Solenoid Starter (TSS) motor |
| 2 | Primary battery |
| 3 | Power and engine management system loads |
| 4 | Field Effect Transistor (FET) |
| 5 | Contactor 1 - closed |
| 6 | Contactor 2 - open |
| 7 | Secondary battery |
| 8 | Sensitive loads |
| 9 | Generator |
NOTE:
A = Primary battery supply
When the engine is running, the electrical systems are powered from the primary battery and the generator. The GWM and the DBM communicate via the LIN bus and the DBM controls the DBJB contactors to isolate the secondary battery from the system by opening its contactor.
The GWM monitors the state of charge of both the primary and secondary batteries to ensure that sufficient voltage is available for the next ECO engine start. The GWM can apply charging to the secondary battery via the DBM and the DBJB if required.