Body Control Module/Gateway Module
NOTE:
Right Hand Drive (RHD) vehicle is shown, Left Hand Drive (LHD) vehicle is similar.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Main wiring harness connector |
| 2 | Main wiring harness connector |
| 3 | Body Control Module/Gateway Module (BCM/GWM) |
| 4 | Main wiring harness connector |
| 5 | Instrument panel wiring harness connector |
| 6 | Instrument panel wiring harness connector |
| 7 | Main wiring harness connector |
| 8 | Main wiring harness connector |
| 9 | Main wiring harness connector |
The Body Control Module/Gateway Module (BCM/GWM) is attached to a bracket, which is bolted to the passenger side of the cross-car beam, behind the instrument panel.
The BCM/GWM is located adjacent to the Passenger Junction Box (PJB), and it is the main controller of the vehicle body systems.
The BCM/GWM contains software to control the following functions:
- Determine the condition of the startup battery.
- Direct Current to Direct Current (DC/DC) converter output:
- Control the DC/DC converter output to reach a desired system voltage.
- Control the DC/DC converter output to reach a target startup battery state of charge.
- Load management: Load management controls the 12V power system to make sure that the system is not overloaded. In certain events, for example, during engine stop/start, some systems can be switched OFF.
- Control stop/start system functionality:
- The BCM/GWM can only inhibit stop/start functionality depending on power system condition.
- The BCM/GWM also provides supporting functionality through load management.
The BCM/GWM communicates with other system control modules on the following:
- FlexRay
- High Speed (HS) Controller Area Network (CAN) powertrain systems bus
- HS CAN power mode zero systems bus
- HS CAN chassis systems bus
- HS CAN comfort systems bus
- HS CAN body systems bus.
The BCM/GWM communicates with the Battery Monitoring System (BMS) control module through a Local Interconnect Network (LIN).
The BCM/GWM monitors the components and can store fault related Diagnostic Trouble Codes (DTCs). Read the DTCs and related data with the Jaguar Land Rover (JLR) approved diagnostic equipment.