Description And Operation: Overview
The vehicle electrical system comprises a number of control modules which are interconnected via several network systems.
The following network systems are used on the vehicle:
- High Speed Controller Area Network (CAN) bus
- Medium speed CAN bus
- Local Interconnect Network (LIN) bus
- Media Orientated Systems Transport (MOST) system.
The CJB is the 'gateway' for the network systems which allows information to be exchanged between networks (except MOST).
The entertainment system components are connected on a fiber optic MOST system. The MOST system can send and receive information to/from the other network systems via a 'gateway' in the IAM.
The following table shows each vehicle control module, the network system to which it is connected, its function and location in the vehicle.
| MODULE | NETWORK SYSTEM | FUNCTION | VEHICLE LOCATION |
|---|---|---|---|
| CJB | High speed CAN bus | Controls body functions and power distribution | Passenger footwell, behind glovebox |
| Steering Angle Sensor Module (SASM) | High speed CAN bus | Transmits steering positional information | Integral with the steering wheel clockspring |
| Diagnostic socket | High speed CAN bus | Allows the transfer of vehicle information using IDS or other diagnostic tool | Driver footwell on underside of instrument panel |
| RCM | High speed CAN bus | Controls deployment of supplementary restraint components | Rear of center console, below arm rest |
| TCM | High speed CAN bus | Controls automatic transmission operation | Mounted on the top of the transmission housing |
| ECM | High speed CAN bus | Controls engine management and fuel system operation | Mounted between the bulkheads in the engine compartment |
| ABS control module | High speed CAN bus | Controls all aspects of the braking system | Mounted between the bulkheads on left side of engine compartment |
| Headlamp leveling control module | High speed CAN bus | Controls the dynamic headlamp leveling function | Passenger footwell, behind the glovebox |
| Terrain Response switchpack | High speed CAN bus | Controls the Terrain Response system using data from other vehicle systems | Integral with Terrain Response rotary control |
| Rear Differential Control Module (RDCM) | High speed CAN bus | Controls the operation of the electronic differential | Mounted on front of rear differential |
| IC | High speed CAN bus | Receives data from other systems to provide driver information | Instrument panel |
| PDCM | High speed CAN bus | Controls Park Distance Control (PDC) system functionality | Mounted on rear left suspension turret |
| EPBCM | High speed CAN bus | Controls Electric Park Brake (EPB) system functionality | Located in the left side of the luggage compartment |
| ESCL | High speed CAN bus | Locks steering column | Located under steering column |
| CJB | Medium speed CAN bus | Controls body functions and power distribution | Passenger footwell, behind glovebox |
| Diagnostic socket | Medium speed CAN bus | Allows the transfer of vehicle information using IDS or other diagnostic tool | Driver footwell on underside of instrument panel |
| PDM | Medium speed CAN bus | Controls window and locking functions | Mounted in passenger door |
| DSM | Medium speed CAN bus | Controls driver seat positioning and also memory functions of other driver personalized functions | Under driver seat |
| DDM | Medium speed CAN bus | Controls window and locking functions | Mounted in driver door |
| ATC module | Medium speed CAN bus | Contains controls for the heating and air conditioning systems | Mounted in center console |
| ICP | Medium speed CAN bus | Contains controls for the entertainment system and gateway between audio system and other vehicle systems | Integral part of head unit, located in center console |
| TS | Medium speed CAN bus | Provides infotainment system information | Located in center console (hi-line vehicles) |
| MFD | Medium speed CAN bus | Provides infotainment system information | Located in center console (lo-line vehicles) |
| IC | Medium speed CAN bus | Receives data from other systems to provide driver information | Instrument panel |
| RVC | Medium speed CAN bus | Provides driver with information while reversing | Tailgate finisher |
| KVM | Medium speed CAN bus | Controls remote functions | Located in the left side of the luggage compartment |
| TIM | Medium speed CAN bus | Allows android phone to display full phone image on touch screen | Located under front left seat |
| Asia NCM | Medium speed CAN bus | Controls navigation system (China, Korea separate systems) | Located under front right seat |
| Rear right door module | LIN | Controls window and locking operation | Mounted in right rear door |
| Rear left door module | LIN | Controls window and locking operation | Mounted in left rear door |
| Generator | LIN | Provide load signal to ECM | Located in engine compartment. Location on engine dependent on engine fitment. |
| SHCM | LIN | Used by ATC to control seat heater temperature | Underside of seat |
| Demist distribution motor | LIN | Moves flaps within the heater assembly to direct air flow to different parts of the interior | Part of the heater assembly |
| Center distribution motor | LIN | Moves flaps within the heater assembly to direct air flow to different parts of the interior | Part of the heater assembly |
| Right distribution motor | LIN | Moves flaps within the heater assembly to direct air flow to different parts of the interior | Part of the heater assembly |
| Left distribution motor | LIN | Moves flaps within the heater assembly to direct air flow to different parts of the interior | Part of the heater assembly |
| Face/feet distribution motor | LIN | Moves flaps within the heater assembly to direct air flow to different parts of the interior | Part of the heater assembly |
| Humidity sensor | LIN | Measures air quality in the vehicle interior | Integral with the interior rear view mirror |
| Clockspring | LIN | Converts analogue signals from steering wheel switches into digital messages | Contains steering wheel module |
| BBUS | LIN | Activated by CJB when alarm trigger is received | Mounted in a central position between the bulkheads in the engine compartment |
| CJB | LIN | Control body functions and power distribution | Passenger footwell, behind glovebox |
| Volumetric sensor | LIN | Detects movement in vehicle interior and activates anti-theft alarm system | In housing in center of headliner |
| Rain/light sensor | LIN | Detects moisture on the windshield | At top of windshield |
| RF receiver | LIN | Receives RF transmissions from the TPMS system and the remote handset | Positioned under rear left side of headliner |
| Driver door switchpack | LIN | Controls operation of the Driver window | Mounted in driver door |
| TCS | LIN | Sends selector lever position to the TCM | Located below center console |
| TCM | LIN | Receives selector lever position information to control transmission operation | Mounted on the top of the transmission housing |
| BMS | LIN | Controls battery status | Mounted on battery negative terminal |
| Clock | LIN | Shows time to driver and passengers | Mounted in the center of instrument panel |
| Steering wheel switchpack left/right | LIN | Driver can control infotainment systems and speed control via them | Mounted on steering wheel |
| PDM | LIN | Controls window and locking functions | Mounted in passenger door |
| DDM | LIN | Controls window and locking functions | Mounted in driver door |
| DMTL pump | LIN | Controls tank leakage | Mounted in the rear left side of vehicle |
| ECM | LIN | Controls engine management and fuel system operation | Mounted between the bulkheads in the engine compartment |
| ATC module | LIN | Contains controls for the heating and air conditioning systems | Mounted in center console |
| IAM | LIN | Contains controls for the entertainment system | Located in center console |
| IC | LIN | Receives data from other systems to provide driver information | Instrument panel |
| Driver/passenger memory seat switchpack | LIN | Controls stored seat positions | Left/right side of seat cushion |
| DSM | LIN | Controls seat functions | Located under driver seat |
| VQM | LIN | Controls battery status | Mounted on left side of bulkhead panel from passenger compartment |
| IAM | MOST | Contains controls for the entertainment system | Located in center console |
| Digital radio/SDARS (NAS only) module | MOST | Receives digital radio broadcasts | Mounted in right side of the luggage compartment |
| AAM | MOST | Provides amplification for the entertainment systems and reception of radio RF broadcasts | Mounted in right side of the luggage compartment |
| Navigation computer (Japan) | MOST | Reads map data from a DVD to calculate and display visual route guidance information via the TAD and audible guidance via the amplifier to the driver | In the center console |
| TS | MOST | Provides the driver interface to the entertainment, navigation and driver personalization functions | In the center console |