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Module Communications Network Land Rover Range Rover L322

Communication Devices 21 illustrations ~1350 words

SPECIFICATIONS

DescriptionNm
Body ground cable to stud nut25
Hood ground cable nut6
Starter motor switch lead nut (Diesel only)4
Battery positive cable to starter motor nut (Diesel)22
Battery positive cable to starter motor nut (Petrol)10
Starter motor bolts45
Headlamp nuts6
Tire pressure module sensor valve4
Tire pressure module sensor bolt4
Audio amplifier bolts10
Transceiver screws6
Antenna nuts6
Voice recognition module nuts6
Traffic message channel tuner nuts10
Telephone control unit nuts4
Rear seat entertainment interface unit bracket bolts4
Satellite digital audio radio service (SDARS) tuner/receiver bolts (NAS only)4
Parking aid sounder nut10
Tailgate solenoid motor bolt25
Horn mounting bracket bolt10
Horn to mounting bracket nut10
Immobilization ECU bolt3
Alarm tilt sensor nuts3
Engine junction box (EJB) nuts8
EJB positive battery cable nut8
Central junction box (CJB) battery cable nut15
CJB cable nuts8

TORQUE SPECIFICATIONS

OVERVIEW

A number of different types of communication network are incorporated into the vehicle wiring harnesses for the transmission of commands and information between control modules. The configuration installed on a particular vehicle depends on the model and equipment level.

The communication networks available on the vehicle are shown in the table below.

Note. For ease of reference, all networks are listed in alphabetical order.

NetworkBaud RateProtocol
Ai Net1200 kbits/sAlpine proprietary system
Medium speed controller area network (CAN) bus125 kbits/sISO 11898
High speed controller area network (CAN) bus500 kbits/sISO 11898
DS2 Diagnostic bus9.6 kbits/sLand Rover corporate for diagnostics + ISO keyword 2000*
Gigabit Video Interface (GVIF)1.95 Gbits/sSony proprietary system
I bus9.6 kbits/sLand Rover corporate for body systems
K bus9.6 kbits/sLand Rover corporate for body systems
Local Interconnect Network (LIN) bus9.6 kbits/sISO 9141
M bus9.6 kbits/sLand Rover corporate for body systems
Media Orientated System Transport (MOST) ring24 mbits/sMOST co-operation
P bus9.6 kbits/sLand Rover corporate for body systems
Sony Philips Digital Interface Format (SPDIF)24 kbits/sSony Phillips proprietary system

Note. The Control Diagrams shown later are schematics reflecting communication networks fitted to right-hand drive (RHD) vehicles only. For detailed layouts of the various communications networks fitted to left-hand drive (LHD) and right-hand drive (RHD) vehicles, refer to the Electrical Circuit Diagrams.

AiNET

The Ai Net is an Alpine proprietary network used to communicate between the Rear Seat Entertainment module and the digital versatile disc (DVD) autochanger.

CAN BUS

The controller area network (CAN) bus is a high speed broadcast network where control modules automatically transmit information every few milliseconds. Information is broadcast down a pair of twisted wires, known as controller area network (CAN) high and controller area network (CAN) low. Information is transmitted on the controller area network (CAN) bus as a voltage difference between the 2 wires.

Two controller area network (CAN) networks are used on the vehicle; medium speed and high speed, with the instrument cluster acting as a gateway between the 2 networks.

Both the medium and high speed controller area network (CAN) bus are connected to the instrument cluster and the diagnostic socket. The medium speed controller area network (CAN) bus terminates at the integrated head unit and the immobilization control module. The high speed controller area network (CAN) bus terminates at the parking brake control module and the anti-lock brake system (ABS) control module.

Control modules are connected in a loop or spur configuration. Should a control module that is looped suffer a connector failure, the bus system will separate into 2 sub-busses. Some communication may still be possible within each sub-bus, but symptoms may be noticed by the driver.

DS2 DIAGNOSTIC BUS

The DS2 diagnostic bus is a network that indirectly connects a number of communication networks to the diagnostic socket. This allows diagnostic routines to be run using the Land Rover approved diagnostic system.

Scheme 1

Scheme 1: DIAGNOSTIC SOCKET
Scheme 1: DIAGNOSTIC SOCKET

The diagnostic socket is connected to all control modules on the bus networks, either directly or indirectly, via the instrument cluster. The diagnostic socket is located in a pocket in the instrument panel, next to the driver's side A pillar.

The majority of control modules connect to the diagnostic socket via the medium and high speed controller area network (CAN) bus networks.

GVIF

The GVIF bus is a Sony proprietary network for the transmission of video between a transmitter device and a display device. In this instance it is used to transmit navigation graphics from the navigation computer to the Touch Screen Display only.

I BUS

The I bus is a Land Rover corporate network connected between control modules of the 'Information and Entertainment' systems.

IS BUS

The IS bus is a dedicated Land Rover corporate network used to transfer information between the rear seat entertainment module and the two rear liquid crystal display (LCD) screens.

K BUS

The K bus is a Land Rover corporate network connected between control modules of the 'body' systems.

LIN BUS

The LIN bus is a low speed broadcast network that employs master and slave components. The master component transmits a message along a single wire to the slave components identifying which slave is to respond. The message has a header (slave identifier) and an empty data field. The identified slave component fills the data field with the relevant information and returns a message to the master component along the same wire.

M BUS

The M bus is a Land Rover corporate network connected between the automatic temperature control (ATC) module and motors on the heater assembly.

MOST RING

The MOST ring uses fiber optic cables to transport data and audio signals around the information and entertainment system. The fiber optic cables are arranged in a ring, with each unit on the ring having a 'MOST in' and 'MOST out' connection.

The MOST ring is a synchronous network. A timing master supplies the clock and all other components on the ring synchronize their operation to this clock. The timing master for the MOST ring is the integrated head unit.

When handling MOST fiber optic cables the following precautions should be observed

  1. After disconnection of any cables carefully install appropriate dust caps to protect the mating faces of the connectors from damage and contamination.
  2. Avoid introducing bends of less than 25 mm (0.98 inches) radius or kinks into the fibre optic cable during service or repair. Tight bends or kinks could impair operation, cause immediate system failure, or future system failure.
  3. Avoid excessive force, strain or stress on the fibers or connectors especially permanent stress after reinstallation.

P BUS

The P bus is a Land Rover corporate network connected between the generic electronic module (GEM) and 'peripheral' control modules.

SPDIF

The SPDIF is an digital optical network connected between the digital versatile disc (DVD) autochanger and the audio amplifier and is used to output the audio from the digital versatile disc (DVD) autochanger to the audio amplifier.

Scheme 2

Scheme 2: CONTROL DIAGRAM - AiNET
Scheme 2: CONTROL DIAGRAM - AiNET
Item NumberDescription
1Rear seat entertainment module
2DVD autochanger

Note. S = AiNet

Scheme 3

Scheme 3: CONTROL DIAGRAM - MEDIUM SPEED CAN BUS
Scheme 3: CONTROL DIAGRAM - MEDIUM SPEED CAN BUS
Item NumberDescription
1Climatic seat control module
2Instrument cluster
3Immobilization control module
4Venture cam
5Tire pressure monitoring module
6Rear climate control module
7Diagnostic socket
8Integrated head unit

Note. N = Medium speed controller area network (CAN) bus

Note. Terminating resistors for the medium speed controller area network (CAN) bus are located in the integrated head unit and the immobilization control module

Scheme 4

Scheme 4: CONTROL DIAGRAM - HIGH SPEED CAN BUS
Scheme 4: CONTROL DIAGRAM - HIGH SPEED CAN BUS
Item NumberDescription
1Air suspension control module
2Transfer box control module
3Transmission Control Module (TCM)
4Engine Control Module (ECM)
5Instrument cluster
6ABS module
7Diagnostic socket
8Parking brake control module
9Electronic rear differential control module
10Terrain Response switch
11Restraints Control Module (RCM)
12Steering angle sensor
13Adaptive front lighting control module

Note. D = High speed controller area network (CAN) bus

Note. Terminating resistors for the high speed controller area network (CAN) bus are located in the anti-lock brake system (ABS) module and the parking brake control module.

Scheme 5

Scheme 5: CONTROL DIAGRAM - DS2 DIAGNOSTIC BUS
Scheme 5: CONTROL DIAGRAM - DS2 DIAGNOSTIC BUS
Item NumberDescription
1Instrument cluster
2Diagnostic socket

Note. C = DS2 diagnostic bus

Scheme 6

Scheme 6: CONTROL DIAGRAM - GVIF
Scheme 6: CONTROL DIAGRAM - GVIF
Item NumberDescription
1Navigation computer
2Touch screen display

Note. Q = GVIF

Scheme 7

Scheme 7: CONTROL DIAGRAM - I BUS
Scheme 7: CONTROL DIAGRAM - I BUS
Item NumberDescription
1Instrument cluster
2Parking aid control module
3Lighting Control Module (LCM)
4Clock
5Clock spring

Note. K = I bus

Scheme 8

Scheme 8: CONTROL DIAGRAM - IS BUS
Scheme 8: CONTROL DIAGRAM - IS BUS
Item NumberDescription
1Left-Hand (LH) rear LCD screen
2Rear seat entertainment module
3Right-Hand (RH) rear LCD screen

Note. X = IS bus

Scheme 9

Scheme 9: CONTROL DIAGRAM - K BUS
Scheme 9: CONTROL DIAGRAM - K BUS
Item NumberDescription
1GEM
2Instrument cluster
3Steering column lock control module
4ATC module
5Fuel fired booster heater
6Seat memory module
7Rain sensor

Note. B = K bus

Scheme 10

Scheme 10: CONTROL DIAGRAM - LIN BUS
Scheme 10: CONTROL DIAGRAM - LIN BUS
Item NumberDescription
1Rear climate control switch pack
2Rear climate control module

Note. O = Local Interconnect Network (LIN) bus

Note. The LIN bus is a private network and does not communicate with other networks.

Scheme 11

Scheme 11: CONTROL DIAGRAM - M BUS
Scheme 11: CONTROL DIAGRAM - M BUS
Item NumberDescription
1ATC module
2Face level air distribution motor
3Windshield air distribution motor
4Footwell air distribution motor
5Fresh/recirculated air motor

Note. L = M bus

Scheme 12

Scheme 12: CONTROL DIAGRAM - MOST RING
Scheme 12: CONTROL DIAGRAM - MOST RING
Item NumberDescription
1Integrated head unit
2Touch screen display
3Compact Disc (CD) autochanger
4Satellite Digital Audio Radio Service (SDARS) receiver
5Telephone transceiver module
6Television (TV) tuner
7Rear seat entertainment module
8Traffic Message Channel (TMC) tuner
9Audio amplifier

Note. P = Media Orientated System Transport (MOST) ring

Scheme 13

Scheme 13: CONTROL DIAGRAM - P BUS
Scheme 13: CONTROL DIAGRAM - P BUS
Item NumberDescription
1GEM
2Roof opening panel control module
3Driver Door Module (DDM)
4Front passenger door module

Note. M = P bus

Scheme 14

Scheme 14: COMPONENT LOCATION - SPDIF
Scheme 14: COMPONENT LOCATION - SPDIF
Item NumberDescription
1DVD autochanger
2Audio amplifier

Note. R = SPDIF

REMOVAL

WARNINGPersons working on the supplemental restraint system (SRS) must be fully trained and have been issued with the safety guidelines.
WARNINGAllow a period of 10 minutes to elapse after disconnecting the battery before undertaking any work on the SRS.
WARNINGThe SRS electrical connectors are unique. DO NOT force, or attempt to connect electrical connectors to the wrong sockets.
WARNINGThe correct procedures must always be used when working on SRS components.
WARNINGIt is imperative that before any work is undertaken on the SRS system, the appropriate information is read thoroughly.
WARNINGAlways disconnect both battery cables before beginning work on the SRS system. Disconnect the ground cable first. Never reverse connect the battery.
WARNINGTake extra care when handling SRS components.

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18

Scheme 19

Scheme 19
Scheme 19
  1. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2005-2009/remont/oem-general-information/#general-information) .
  2. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information__specifications) .
  3. Remove the audio unit. Refer to «Audio Unit»(/land-rover/range-rover/l322-2005-2009/remont/entertainment-systems/#information-and-entertainment-system-general-information) .
  4. Remove the central junction box (CJB) lower access cover. Release the clips.
  5. Remove the CJB battery positive cables. Remove the 5 nuts.
  6. Release the CJB from the in-vehicle crossbeam. Remove the 4 screws. Reposition the CJB assembly for access.
  7. Disconnect the 8 CJB electrical connectors.
  8. Remove the CJB. Remove the CJB upper access cover. Disconnect the CJB battery positive cable. Reposition the battery positive cable for access.

INSTALLATION

  1. Install the CJB. Connect the CJB battery positive cable. Tighten the nut to 15 Nm (11 lb.ft). Install the CJB upper access cover.
  2. Connect the CJB electrical connectors.
  3. Secure the CJB. Install the screws.
  4. Install the CJB battery positive cables. Connect the CJB battery positive cables to the previously marked positions. Tighten the nuts to 8 Nm (6 lb.ft).
  5. Install the CJB lower access cover.
  6. Install the audio unit. Refer to «Audio Unit»(/land-rover/range-rover/l322-2005-2009/remont/entertainment-systems/#information-and-entertainment-system-general-information) .
  7. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information__specifications) .

Scheme 20

Scheme 20: REMOVAL
Scheme 20: REMOVAL

Scheme 21

Scheme 21
Scheme 21
  1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information__specifications) .
  2. Remove the engine control module (ECM) cover. Remove the 10 screws.
  3. Remove the engine junction box (EJB). Disconnect the 4 electrical connectors. Release the EJB positive battery cable. Remove the 2 nuts.
  4. Remove the 5 relays.
  1. Install the relays.
  2. Install the EJB. Tighten the nuts to 8 Nm (6 lb.ft). Secure the EJB positive battery cable. Connect the electrical connectors.
  3. Install the ECM cover. Tighten the screws to 2 Nm (1 lb.ft).
  4. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information__specifications) .

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