Module Controlled Functions: Introduction

WARNING: This page is about a different car, the 2011 Jaguar XKR, 2011 Jaguar XK, 2010 Jaguar XKR, and 2010 Jaguar XK. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle electrical system consists of a number of control modules connected via two multiplexed controller area network (CAN) busses. The Instrument cluster acts as a gateway between the two controller area network (CAN) bus systems.

Lower speed control modules use a local interconnect network (LIN) bus. Control modules on the local interconnect network (LIN) bus are generally configured to be master/slave i.e. one module controls other module(s).

The vehicle entertainment system uses a fibre optic bus system, which uses the MOST (media oriented systems transport) protocol for transmission of data and audio to the relevant components of the audio system.

Module	Bus System	Function	Location
engine control module (ECM)	HS controller area network (CAN)	Controls the engine in response to various sensor inputs.	Front left-hand (LH) side in engine compartment adjacent to bulkhead.
anti-lock brake system (ABS) module	HS controller area network (CAN)	Controls the braking force applied to the road wheels.	In the engine compartment next to the engine control module (ECM).
Instrument cluster	HS controller area network (CAN), MS controller area network (CAN) and local interconnect network (LIN)	Gateway between High speed and Medium speed controller area network (CAN), gateway between the controller area network (CAN) busses and the local interconnect network (LIN) bus.	On the driver side in the instrument panel.
Parking aid control module	MS controller area network (CAN)	Control of parking sensors and routing of audio feedback to driver.	Lower left-hand (LH) A pillar below the central junction box (CJB).
Navigation computer	MOST, GVIF	Route guidance output based on inputs from global positioning system (GPS) satellites and driver destination.	In the luggage compartment to the right of battery.
restraints control module (RCM)	MS controller area network (CAN)	Controls the deployment of supplementary restraint components.	On the transmission tunnel between the seats under the trim.
tire pressure monitoring system (TPMS) module	MS controller area network (CAN)	Monitors the vehicle tires to warn of deflation.	Behind the rear seats next to the auxiliary junction box (AJB).
transmission control module (TCM)	MS controller area network (CAN)	Electronic control of the automatic gear change.	In the sump of the transmission.
Steering column lock	MS controller area network (CAN)	Inhibits the steering from being turned without the proper security parameters being met.	On the steering column.
Headlamp leveling/adaptive front lighting module	HS controller area network (CAN)	Controls headlamp levels and adaptive front lighting system.	right-hand (RH)foot well mounted against inner bulk head.
Adaptive speed control module	HS controller area network (CAN)	Controls vehicle road speed in relation to other vehicles when in speed control mode.	At the bottom of the right-hand (RH) A pillar.
central junction box (CJB)	MS controller area network (CAN)	Controls body functions and power distribution.	In the passenger compartment right-hand (RH) side on the A pillar.
auxiliary junction box (AJB)	MS controller area network (CAN)	Controls body functions and power distribution.	In the center behind the backrest of the rear passenger seat.
Seat climate control module	MS controller area network (CAN)	Controls the operation of the climate control system in the front seats.	In the instrument panel.
ADCM	HS controller area network (CAN)	Controls the adjustment of the dampers.	Behind the backrest of the right-hand (RH) rear passenger seat.
electronic parking brake (EPB) module	HS controller area network (CAN)	Controls the application and release of the parking brake.	Behind the auxiliary junction box.
automatic temperature control (ATC) module	MS controller area network (CAN)	Controls the operation of the climate control/air-conditioning system.	Attached to the side of air conditioning unit.
Information and entertainment control module	MS controller area network (CAN)	Gateway between the MOST and controller area network (CAN) systems for information and control distribution.	Behind the TSD and above the integrated audio unit.
Driver door module	MS controller area network (CAN)	Memory/adjustment functions for seats, steering column and mirrors and security functions.	In the drivers door behind the trim.
Passenger door module	MS controller area network (CAN)	Memory/adjustment functions for seats, steering column and mirrors and security functions.	In the passenger door behind the trim.
Integrated control panel	MS controller area network (CAN)	Contains controls for entertainment system and air conditioning system.	Center of the instrument panel surrounding the TSD.
Driver seat module	MS controller area network (CAN)	Controls seat positioning and memory seat functions.	Under the drivers seat.
Passenger seat module	MS controller area network (CAN)	Controls seat positioning and memory seat functions.	Under the front passenger seat.
Keyless vehicle module	MS controller area network (CAN)	Allows the vehicle to be opened and started without the use of a key.	Right hand A pillar.
JaguarDrive selector module	MS controller area network (CAN)	Electronic control of the selected gear/driving mode.	On top of the transmission tunnel.
Key start control module	local interconnect network (LIN)	Used if the keyless vehicle module is unable to authorize the smart key.	In the center consol.
Pedestrian protection system module	HS controller area network (CAN)	Control and monitoring of pedestrian protection system.	On the LH side under the wheel arch liner at the top of the wheel arch.
DLM	HS controller area network (CAN)	Controls the operation of the motor on the electronic differential.	LH side of the luggage compartment, immediately forward of the tail lamp.