Supplemental Restraint System Land Rover Range Rover L322

SPECIFICATIONS

TORQUE SPECIFICATIONS

* Indicates a new bolt, nut or screw must be installed.

Scheme 16

Scheme 17

OVERVIEW

The supplemental restraint system (SRS) activates pretensioners and/or air bags if the vehicle suffers an impact above preset limits. When it activates the pretensioners/air bags the supplemental restraint system (SRS) also disconnects the starter lead from the battery. The supplemental restraint system (SRS) consists of

1. An restraints control module (RCM)
2. Four side impact sensors
3. An occupancy sensor (NAS (north American specification) only)
4. An occupancy sensor module (NAS (north American specification) only)
5. Safety belt switches
6. Safety belt pretensioners
7. A driver air bag
8. A passenger air bag
9. Side air bags
10. Head air bags
11. A clockspring
12. A warning lamp
13. A driver knee bolster airbag
14. A belt minder sensor
15. A passenger airbag deactivation switch (Not NAS and Australia)
16. A passenger airbag deactivation indicator (not Australia).

The supplemental restraint system (SRS) features selective activation of the air bags and pretensioners, and two stage driver and passenger air bags. The driver and passenger air bags each have two gas generators which are fired sequentially, with a variable time delay between firings to adjust the speed of air bag inflation to the severity of the crash impact.

Scheme 18

The restraints control module (RCM) is installed on the top of the transmission tunnel, beneath the transmission gear selector lever assembly, and controls the operation of the supplemental restraint system (SRS). The main functions of the restraints control module (RCM) include

1. Crash detection and recording.
2. Air bag and pretensioner firing.
3. Self test and system monitoring, with status indication via the warning lamp and non-volatile storage of fault information.

A safing function is provided by accelerometers in the restraints control module (RCM) to concur impacts. Various firing strategies are employed by the restraints control module to ensure the air bags/pretensioners that are fired are appropriate to the severity and direction of the impact. The firing strategy used also depends on the inputs from the safety belt buckle switches, seat position sensor, passenger air bag deactivation switch, and the occupant classification sensor, dependent on market.

An energy reserve in the restraints control module (RCM) ensures there is always a minimum of 150 milliseconds of stored energy available if the power supply from the ignition switch is disrupted during a crash. The stored energy is sufficient to produce firing signals for the driver air bag, the passenger air bag and the safety belt pretensioners.

When the ignition is switched on the restraints control module (RCM) performs a self test and then performs cyclical monitoring of the system. If a fault is detected the restraints control module (RCM) stores a related fault code and sends the signal to illuminate the air bag warning indicator. The faults can be retrieved by the Land Rover approved diagnostic system via the high speed controller area network (CAN) bus connection (J1962). If a fault that could cause a false fire signal is detected, the restraints control module (RCM) disables the respective firing circuit, and keeps it disabled during a crash event.

IMPACT SENSORS

Impact sensors are installed in the front and both sides of the vehicle. The use of multiple impact sensors provides shorter air bag trigger times, through faster detection of lateral and longitudinal acceleration, and improves detection accuracy.

There are two front impact sensors, attached to the headlamp surround panel below the headlamps.

There are four side impact sensors located in the passenger compartment, as follows

1. One attached to the base of each B/C pillar
2. One attached to the base of each D pillar.

Each impact sensor incorporates an accelerometer and a microchip powered by a feed from the restraints control module (RCM). The power feed also provides the interface connection through which the side impact sensor communicates with the restraints control module (RCM) using serial data messages. Acceleration is evaluated by the microchip and transmitted to the restraints control module, which then makes the decision on whether or not to activate the air bags and pretensioners.

When the ignition is switched on the restraints control module (RCM) supplies power to the impact sensors, which perform a self test. After satisfactory self tests the impact sensors continually output 'digital acceleration' messages to the restraints control module. If a fault is detected the relevant impact sensor sends a fault message, instead of the digital acceleration message, to the restraints control module. The restraints control module (RCM) then stores a related fault code and illuminates the air bag warning indicator. Faults can be retrieved by the Land Rover approved diagnostic system from the restraints control module (RCM) via the high speed controller area network (CAN) bus connection (J1962).

PASSENGER AIR BAG DEACTIVATION SWITCH (ALL EXCEPT NAS AND AUSTRALIA)

The passenger air bag deactivation switch provides a method of manually disabling the passenger air bag. The switch is installed in the front passenger end of the instrument panel and operated by the ignition key.

When the passenger air bag deactivation switch is operated, it changes a ground connection between two pins in the connectors of the restraints control module (RCM). When the passenger air bag deactivation switch is selected to OFF, the restraints control module (RCM) disables the passenger air bag and, if the front passenger seat is occupied, illuminates the passenger air bag deactivation indicator.

Scheme 19

The passenger air bag deactivation indicator is installed in the overhead console (on the header rail). When appropriate, the indicator illuminates to advise front seat occupants that the passenger air bag is disabled. Operation of the indicator is controlled by the restraints control module (RCM). The restraints control module (RCM) illuminates the indicator when

1. There is a fault with the passenger air bag firing circuit(s) that warrants disablement
2. The passenger air bag is deactivated with the passenger air bag deactivation switch (where fitted)
3. The occupant classification sensor sends a passenger air bag disable state.

Scheme 20

The seat position sensor allows the restraints control module (RCM) to detect when the driver seat is forward of a given point on the seat track. The seat position sensor consists of a Hall effect sensor attached to the driver seat frame. While the ignition is on, the restraints control module (RCM) supplies the sensor with power, and monitors the return current. When the seat frame moves forwards, the sensor moves over the edge of the seat track, which changes the reluctance of the sensor. The change of current is detected by the restraints control module (RCM) and used as a switching point. The switching point is when the center of the sensor is 3 ± 4 mm from the leading edge of the seat track.

When the driver seat is forward of the switching point, the restraints control module (RCM) increases the time delay between firing the two stages of the inflator in the driver air bag. When the driver seat is rearward of the switching point, the restraints control module (RCM) uses the normal time delay between firing the two stages.

OCCUPANT MONITORING

There are two types of occupant monitoring

1. In all markets except NAS & Australia, vehicles have an occupant detection sensor
2. In NAS markets, vehicles have an occupant classification system

For markets which have an occupant detection sensor, this has no interface with the restraints system and only provides the belt reminder function.

For markets that have an occupant classification system, this provides the restraints control module (RCM) with the occupancy status of the front passenger seat. The restraints control module uses this and the seat buckle status in the evaluation of the firing strategy for the passenger front air bag, side air bag, and pretensioner.

SAFETY BELT SWITCHES

A safety belt switch is installed in the buckle of each front safety belt to provide the restraints control module (RCM) with a status signal of the related safety belt(s). When the safety belt is unfastened the switch outputs a low current to the restraints control module (RCM). When the safety belt is fastened the switch outputs a high current to the restraints control module (RCM).

Scheme 21

The occupancy sensor is installed in the cushion of the front passenger seat between the foam padding and the cover. The sensor consists of a foil contact circuit, embedded in a plastic sheet. Weight on the sensor reduces the resistance of the circuit. The occupancy sensor is directly connected to the instrument cluster and has no input into the supplemental restraint system (SRS).

Scheme 22

The occupant classification system can determine if the front passenger seat is unoccupied, occupied by a small person, or occupied by a large person. The occupant classification system consists of

1. A pressure pad, installed under the cushion of the front passenger seat, which is connected to a pressure sensor
2. A safety belt tension sensor, integrated into the anchor point of the front passenger safety belt
3. An occupant classification module, installed under the front passenger seat.

The pressure pad is a silicone filled bladder. Any load on the pressure pad is detected by the pressure sensor.

The safety belt tension sensor is a strain gauge that measures the load applied by the safety belt anchor to the anchor bolt. The sensor is located in the lower safety belt anchor point.

Scheme 23

The occupant classification module supplies a reference voltage to the pressure sensor and the safety belt tension sensor and, from the returned signals, measures the loads acting on the pressure pad and the safety belt tension sensor. The load measurement from the safety belt tension sensor is used to produce a correction factor for the load measurement from the pressure pad. The tightness of the safety belt affects the load acting on the pressure pad, so without the correction factor the occupant classification module cannot derive an accurate occupancy status.

The occupant classification module translates the load readings into a seat occupancy status and transmits the result to the restraints control module (RCM), on a dedicated high speed controller area network (CAN) bus link. The occupant classification module incorporates two load limits for the seat cushion: When the load exceeds the lower limit, but is less than the upper limit, the occupant is classified as small; when the upper limit is exceeded, the occupant is classified as large.

The occupant classification system has 4 possible states which are detailed in the following table.

Scheme 24

The occupancy sensor module is installed on the underside of the front passenger seat. The module supplies a power feed to the occupancy sensor and monitors the return voltage to determine if the seat is occupied or not. The result is transmitted to the restraints control module (RCM) on the High speed controller area network (CAN) bus. The occupancy sensor module also monitors for short and open circuits in the occupancy sensor. If it detects a fault, the occupancy sensor module transmits a fault message in place of the status message.

Scheme 25

The pretensioners are used to tighten the front safety belts during a collision to ensure the occupants are securely held in their seats. A pretensioner is integrated into each front safety belt buckle and attached to a bracket on the inboard side of the seat.

Each pretensioner has a tube containing propellant and a piston. The piston is attached to a steel cable, the opposite end of which is attached to the safety belt buckle. A squib in the base of the tube provides an ignition source when triggered by a fire signal from the restraints control module (RCM).

On receipt of a fire signal from the restraints control module (RCM), the squib ignites the propellant. The propellant produces nitrogen gas that rapidly expands to drive the piston along the tube, pulling the cable and drawing the buckle downwards.

Scheme 26

The driver air bag forms the center pad of the steering wheel. Four pins and two latches locate and secure the driver air bag to the steering wheel. The latches consist of wire springs on each side of the driver air bag which engage with hooks in the steering wheel. The driver air bag is released from the steering wheel by pulling on the wire springs with a special tool inserted through a slot on each side of the steering wheel hub. Springs on the locating pins then push the driver air bag away from the steering wheel.

The driver air bag has a two stage inflator, with separate electrical connectors for each stage. The inflator contains a non-azide propellant as the gas generator.

Lines molded into the inner surface of the driver air bag cover provide weak points that split open in a controlled manner when the driver air bag deploys. The inflated volume of the air bag is 57 liters (2.01 ft3).

Scheme 27

The passenger air bag is located in the instrument panel, behind the upper glove compartment. The bottom of the passenger air bag is attached to a mounting bracket on the in-vehicle crossbeam. The top of the passenger air bag is attached to a re-enforcement lid in the top of the instrument panel. The reinforcement lid incorporates a single door that opens, splitting the instrument panel covering, when the air bag deploys.

The passenger air bag is grounded through an earth track and the module's connection to the in-vehicle crossbeam.

The air bag has a two stage inflator, with separate electrical connectors for each stage. The inflator contains a non-azide propellant as the gas generator in each stage. The inflated volume of the air bag is 121 liters (4.27 ft3)."

Scheme 28

A side air bag is attached to the outside of each front seat backrest frame, under the backrest cover.

The side air bags are handed, and each consist of a molded plastic case which contains the folded air bag and the inflator. A cable connects the igniter of the inflator to a connector in the main seat harness connector block located under the front edge of the seat cushion.

When the air bag deploys it forces the front edge of the molded plastic case apart and splits open the backrest cover.

The side air bags use compressed argon as the inflation medium. The inflated volume of each side air bag is 12 liters (0.42 ft3).

SIDE HEAD AIR BAGS

The side head air bags are installed between the A and D pillar trims and above the outer edges of the headlining. The inflatable bags incorporate tether straps at each end which are attached to the body. When the air bag deploys, the inflating bag shortens in length and pulls on the tether straps, which forces it from behind the trim to cover the window in a straight line between the tether strap anchor points.

Scheme 29

The inflatable knee bolster air bag is located behind the driver's knee bolster panel below the steering column. The flanges of the inflatable knee bolster air bag are attached to a re-enforcement lid in the driver knee bolster panel. The re-enforcement lid incorporates two deployment doors that are forced open, splitting the instrument panel covering, when the air bag deploys.

An EPC connector attaches a ground to the inflatable knee bolster air bag.

The inflatable knee bolster air bag has a single stage inflator with one connector on the outboard end. The inflator contains a non-azide propellant as the gas generator. The inflated volume of the air bag is 19 liters (0.67 ft3).

Scheme 30

The air bag warning indicator consists of a yellow light emitting diode (LED) behind a supplemental restraint system (SRS) graphic in the instrument cluster.

Operation of the air bag warning indicator is controlled by a high speed controller area network (CAN) bus message from the restraints control module (RCM) to the instrument cluster. The restraints control module (RCM) sends the signal to illuminate the air bag warning indicator if a fault is detected, and for approximately 6 seconds during the bulb check at the beginning of each ignition cycle.

Scheme 31

The clockspring is installed on the steering column to provide the electrical interface between the fixed wiring harness and the steering wheel. The clockspring provides connections for the driver air bag, horn and steering wheel switch packs.

A rotating link harness is encapsulated into a plastic cassette comprising outer and inner housings with integral connectors. Brackets on the outer housing accommodate the column stalk switches. A spring loaded locking lever attached to the outer housing automatically engages and disengages with the inner housing when the steering wheel is removed and installed. To prevent damage to the rotating link harness, both the steering and the clockspring must be centralized when removing and installing the steering wheel.

In a collision, the sudden deceleration or acceleration is measured by the impact sensors and the accelerometers in the restraints control module. The restraints control module evaluates the readings to determine the impact point on the vehicle and whether the deceleration/acceleration readings exceed the limits for firing any of the air bags, pretensioners, and battery disconnect unit. During a collision, the restraints control module only fires the air bags and pretensioners if the safing function confirms that the data from the impact sensor(s) indicates an impact limit has been exceeded.

The restraints control module incorporates the following impact thresholds to cater for different accident scenarios

1. Front impact, pretensioners
2. Front impact, driver and passenger air bags stage 1, belt unfastened
3. Front impact, driver and passenger air bags stage 1, belt fastened
4. Front impact, driver and passenger air bags stage 2, belt unfastened
5. Front impact, driver and passenger air bags stage 2, belt fastened
6. Rear impact
7. Driver side impact
8. Passenger side impact.

The front impact thresholds increase in severity from pretensioners, through to driver and passenger air bag stage 2, belt fastened.

FIRING STRATEGIES

The safety belt pretensioners are fired when the pretensioner impact limit is exceeded. The restraints control module only fires the pretensioners if the related safety belt is fastened.

The driver and passenger air bags are only fired in a frontal impact. If an impact exceeds a stage 1 limit, but is less than the corresponding stage 2 limit, only one inflator in each air bag is fired (stage 2 is still fired for disposal after a delay of 100ms). If an impact exceeds the stage 2 limit, the two inflators in each air bag are fired simultaneously.

The passenger air bag is disabled unless the front passenger seat is occupied by a large person (NAS only), or the passenger air bag deactivation switch is on (all except NAS & AUS).

The stage 2 inflator of the driver air bag is disabled if the driver seat is forward of the switching point of the seat position sensor.

If there is a fault with a safety belt buckle sensor, the restraints control module assumes the related safety belt is fastened for the pretensioner firing strategy and unfastened for the driver and passenger air bag firing strategies. If there is a fault with the occupant classification sensor, the restraints control module disables the passenger air bag. If there is a fault with the passenger air bag deactivation switch, the restraints control module disables the passenger air bag.

If a side impact limit is exceeded, the restraints control module fires the side air bag and the side head air bag on that side of the vehicle. If the side impact limit on the front passenger side of the vehicle is exceeded, the restraints control module also evaluates the input from the occupant classification sensor, and fires the side air bag only if the front passenger seat is occupied by a large person (NAS only).

If multiple impacts occur during a crash event, after responding to the primary impact the restraints control module will output the appropriate fire signals in response to any further impacts if unfired units are available.

FRONT AND REAR IMPACT FIRING STRATEGY (ALL EXCEPT NAS)

FRONT AND REAR IMPACT FIRING STRATEGY (NAS ONLY)

The battery disconnect unit is fired

1. At driver and passenger air bag belt fastened threshold in a frontal impact
2. At the driver and passenger side impact threshold in a side impact
3. At the rear impact threshold in a rear impact.

CRASH SIGNAL

When the restraints control module (RCM) outputs any of the fire signals it also outputs a crash signal to the central junction box (CJB) and the engine control module (ECM) on the High speed controller area network (CAN). The crash signal is also hardwired to the engine control module (ECM) and the central junction box (CJB). The instrument cluster picks up the crash signal from the High speed controller area network (CAN) and gateways it to the lighting control module (LCM). On receipt of the crash signal, the central junction box (CJB) goes into a crash mode and the engine control module (ECM) cuts the power supply to the fuel pump relay. In the crash mode, the central junction box (CJB)

1. Activates all of the unlock signals of the vehicle locking system, even if the vehicle is already unlocked.
2. Ignores all locking/superlocking inputs until it receives an unlock input, when it returns the locking system to normal operation.
3. Activates the interior lamps. The interior lamps remain on permanently until they are manually switched off at the lamp unit, or the central junction box (CJB) crash mode is switched off and they return to normal operation.
4. Disables the rear window child lock input until the crash mode is switched off.
5. Sends a crash message to the lighting control module (LCM) to activate the hazard flashers. The hazard flashers remain on until cancelled by the hazard warning switch or the crash mode is switched off.

The central junction box (CJB) crash mode is switched off by a valid locking and unlocking cycle of the locking system.

CONTROL DIAGRAM SHEET

Note. A = Hardwired; D = High Speed CAN

Scheme 32

PRINCIPLE OF OPERATION

For a detailed description of the air bag supplemental restraint system and operation, refer to the relevant Description and Operation Instructions of the workshop information. Refer to Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) .

SAFETY INFORMATION

Note. It is advisable not to use a cellular phone or to have a cellular phone in close proximity when working on the SRS system or components.

Note. Given the legal implications of a restraints system failure, harness repairs to Air Bag module circuits are not acceptable. Where the text refers to "REPAIR the circuit", this will normally mean the replacement of a harness.

POWER SUPPLY DEPLETION

Power supply depletion

Before beginning any work on the SRS system or related components

1. Remove the ignition key.
2. Disconnect the battery leads, ground first.
3. Wait 2 minutes for the power circuit to discharge.

There are comprehensive instructions on the correct procedures for SRS system repairs in the workshop information. Refer to the relevant instructions. of the workshop information.

INSPECTION AND VERIFICATION

Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

1. Verify the customer concern. Confirm the function of the warning lamp (if the warning lamp is inoperative, system faults will be signalled by an audible chime)
2. Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION Mechanical Electrical Check for the installation of non-standard accessories which may affect or obstruct the function of the SRS system Check the condition of trim, etc at the SRS system components Sensor(s) Pretensioner(s) Air bag module(s) Occupant detection/classification sensors Seat position sensor Fuses Wiring harness Make sure all electrical connector(s) are engaged correctly on the air bag circuits Make sure the Restraints Control Module (RCM) is correctly installed Warning lamp bulb(s) Impact sensor(s) Buckle sensor(s) Pretensioner(s) Air bag module(s) Air bag deactivation switch Air bag deactivation warning lamp Occupant detection/classification sensors Seat position sensor Clockspring
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the relevant DTC Index.

DTC INDEX

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Instructions 100-00. Refer to Diagnostic Trouble Code (DTC) Index - DTC: Module Name: Restraints Control Module and Refer to Diagnostic Trouble Code (DTC) Index - DTC: Module Name: Occupant Classification System .

AIR BAG DISPOSAL

SPECIAL TOOLS Tool Illustration Tool Name Tool Number LRT-86-007-02 LRT-86-007-05 LRT-86-007-08 LRT-86-003 LRT-86-003-05 LRT-86-003-08 LRT-86-003-03

Scheme 33

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

DEPLOYED AIR BAG

1. Deployed air bag modules are to be disposed of as special waste and must comply with local environmental requirements, if in doubt, contact the Authority for disposal requirements.
2. Air bag modules removed and deployed by Land Rover service are to be returned to the importer for disposal.

UNDEPLOYED AIR BAG - INOPERATIVE

1. Remove the inoperative driver air bag module or passenger air bag module. Refer to «Driver Air Bag Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) and «Passenger Air Bag Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) and «Driver Lower Air Bag Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) and «Front Side Air Curtain Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#safety-belt-system) or «Front Side Air Curtain Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) . Refer to «Side Air Curtain Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#safety-belt-system) or «Side Air Curtain Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) . Refer to «Side Air Bag Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#safety-belt-system) or «Side Air Bag Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) . «Front Seat Side Air Bag Module»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#supplemental-restraint-system) and «Front Safety Belt Buckle»(/land-rover/range-rover/l322-2009-2012/remont/airbag/#safety-belt-system) .

UNDEPLOYED AIR BAG - PREPARATION OF VEHICLE FOR DISPOSAL

Note. Remote Deployment

1. Remove any loose debris from around air bag module. Make sure that no flammable liquids are present.
2. Disconnect the battery ground cable.
3. Disconnect the air bag module electrical connector.
4. Connect the special tool adaptor lead to the air bag module.
5. Connect the special tool lead to the air bag deployment tool adaptor lead. Pass the special tool lead through the window, close all doors, leave the window with the special tool lead open.
6. Connect the special tool to a 12V battery.
7. Deploy the air bag module by operating both of the switches on the special tool. If deployment does not occur, disconnect the special tool from the battery and seek advice from Land Rover.
8. Repeat the procedure for all of the air bag modules in the vehicle.
9. The vehicle can now be disposed of in the normal manner with the air bag modules installed.

DISPOSAL OF THE DRIVER AIR BAG MODULE, PASSENGER AIR BAG MODULE, SIDE AIR BAG MODULES AND DRIVER LOWER AIR BAG MODULE

Note. Equipment required: Air bag deployment tools, LRT-86-003, LRT-86-007/02, LRT-86-007/05, LRT-86-007/08, LRT-86-003/05 and LRT-86-003/08, Battery (12V), Safety goggles to BS2092 grade 2, Rubber gloves to PrEN 374 class 2, Ear protectors that have been measured to BS.EN 24869, Particulate respirator to EN 149 grade FFP2S, Suitable vice.

1. Using a suitable vice, secure the special tool bracket.
2. Secure the air bag module to the special tool bracket.
3. Connect the special tool adaptor lead to the air bag module.
4. Make sure the special tool battery connections are 15 Meters (50 Feet) away from the air bag module.
5. Remove any loose parts from around the air bag module. Make sure that no flammable liquids are present.
6. Connect the special tool to a 12V battery.
7. Deploy the air bag module by operating both of the switches on the special tool. If deployment does not occur, disconnect the special tool from the battery and seek advice from Land Rover.
8. Allow the air bag module to cool.
9. Remove the air bag module from the special tool bracket and seal it in a plastic bag, ready for disposal.
10. In the event of any problems or queries arising from this procedure, contact Land Rover.

DISPOSAL OF THE FRONT SIDE CURTAIN AIR BAG MODULE AND SIDE CURTAIN AIR BAG MODULES

Note. Equipment required: Air bag deployment tools LRT-86-003 and LRT-86-003/08, Battery (12V), Safety goggles to BS2092 grade 2, Rubber gloves to PrEN 374 class 2, Ear protectors that have been measured to BS.EN 24869, Particulate respirator to EN 149 grade FFP2S.

1. Using a suitable vice, secure the special tool bracket.
2. Secure the air bag module to the special tool bracket.
3. Connect the special tool adaptor lead to the air bag module.
4. Make sure the special tool battery connections are 15 Meters (50 Feet) away from the air bag module.
5. Remove any loose parts from around the air bag module. Make sure that no flammable liquids are present.
6. Connect the special tool to a 12V battery.
7. Deploy the air bag module by operating both of the switches on the special tool. If deployment does not occur, disconnect the special tool from the battery and seek advice from Land Rover.
8. Allow the air bag module to cool.
9. Remove the air bag module from the special tool bracket and seal in a plastic bag, ready for disposal.
10. In the event of any problems or queries arising from this procedure, contact Land Rover.

DISPOSAL OF THE SAFETY BELT PRETENSIONER

Note. Equipment required: Air bag deployment tools LRT-86-003, LRT-86-003/08 and LRT-86-007/02, Battery (12V), Safety goggles to BS2092 grade 2, Rubber gloves to PrEN 374 class 2, Ear protectors that have been measured to BS.EN 24869, Particulate respirator to EN 149 grade FFP2S.

1. Using a suitable vice, secure the special tool bracket.
2. Secure the safety belt pretensioner to the special tool bracket.
3. Connect the special tool adaptor lead to the safety belt pretensioner.
4. Make sure the special tool battery connections are 15 Meters (50 Feet) away from the safety belt pretensioner.
5. Remove any loose parts from around the safety belt pretensioner. Make sure that no flammable liquids are present.
6. Connect the special tool to a 12V battery.
7. Deploy the safety belt pretensioner by operating both of the switches on the special tool. If deployment does not occur, disconnect the battery from the special tool and seek advice from Land Rover.
8. Allow the safety belt pretensioner to cool for at least 20 minutes. Cooling SRS modules should be continuously monitored to make sure the heat does not generate a fire with spilled liquids or other debris.
9. Remove the safety belt pretensioner from the air bag deployment tool bracket and seal in a plastic bag, ready for disposal.
10. In the event of any problems or queries arising from this procedure, contact Land Rover.

REMOVAL

Scheme 39

Scheme 40

1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
2. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
3. Remove the B-pillar trim panel. Refer to «B-Pillar Trim Panel»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
4. Remove the front scuff plate trim panel. Refer to «Front Scuff Plate Trim Panel»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
5. Remove the rear scuff plate trim panel. Refer to «Rear Scuff Plate Trim Panel»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
6. Release the front safety belt retractor. Remove and discard the bolt.
7. Remove the B-pillar floor covering trim panel. Remove the 2 clips.
8. Release the B-pillar side impact sensor bracket. Remove and discard the 3 bolts.
9. Disconnect the B-pillar side impact sensor electrical connector. Release the 2 wiring harness clips.
10. Remove the B-pillar side impact sensor and B-pillar side impact sensor bracket.

INSTALLATION

1. Install the B-pillar side impact sensor and B-pillar side impact sensor bracket.
2. Connect the B-pillar side impact sensor electrical connector. Secure the 2 wiring harness clips.
3. Secure the B-pillar side impact sensor bracket. Tighten the 3 new bolts to 8 Nm (6 lb.ft).
4. Install the B-pillar floor covering trim panel. Install the 2 clips.
5. Secure the front safety belt retractor. Install the new bolt and tighten to 31 Nm (23 lb.ft).
6. Install the rear scuff plate trim panel. Refer to «Rear Scuff Plate Trim Panel»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
7. Install the front scuff plate trim panel. Refer to «Front Scuff Plate Trim Panel»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
8. Install the B-pillar trim panel. Refer to «B-Pillar Trim Panel»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
9. Connect the battery ground lead. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Note. If the SRS component is to be replaced, the bar code of the new unit must be recorded.

Scheme 41

Scheme 42

Scheme 43

Scheme 44

1. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
2. Fully extend the steering column for access.
3. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
4. Remove the steering wheel. Refer to «Steering Wheel»(/land-rover/range-rover/l322-2009-2012/remont/steering-column/#steering-column) .
5. Release the steering column extension gaiter. Release the 6 clips.
6. Remove the steering column lower shroud. Remove the 3 screws.
7. Remove the steering column upper shroud.
8. Release the clockspring. Remove the 4 screws.
9. Remove the clockspring. Disconnect the 5 electrical connectors. Cut the cable tie.
10. Remove the steering column control switch. Carefully release the clip.
11. Remove the LH steering column multifunction switch. Release the 2 clips.
12. Remove the RH steering column multifunction switch. Release the 2 clips.

1. Install RH steering column multifunction switch.
2. Install LH steering column multifunction switch.
3. Install the steering column control switch.
4. Install the clockspring. Align the wiring harness and secure with a cable tie. Connect the 5 electrical connectors. Install the 4 screws.
5. Install the steering column upper shroud.
6. Install the steering column lower shroud. Install the 3 screws.
7. Attach the steering column extension gaiter.
8. Install the steering wheel. Refer to «Steering Wheel»(/land-rover/range-rover/l322-2009-2012/remont/steering-column/#steering-column) .
9. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
10. Return the steering column to its original position.

Note. If the SRS component is to be replaced, the bar code of the new unit must be recorded.

Scheme 45

Scheme 46

Scheme 47

1. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
2. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
3. Release the 2 clips from the driver air bag module using a rod at least 50 mm (2 inches.) long and not exceeding 3 mm (1/8 inch.) diameter. Install the rod through each access hole in the steering wheel control switches at right angles to the steering column. Locate the secondary hole and carefully push on the rod until the clip is released.
4. Remove the driver air bag module. Disconnect the 3 electrical connectors.
5. Remove the speed control switch and steering wheel audio controls. Remove the 4 screws. Disconnect the 5 electrical connectors from the speed control switch and steering wheel audio controls.

1. Install the speed control switch and steering wheel audio controls. Connect the 5 electrical connectors to the speed control switch and steering wheel audio controls. Install the 4 screws and tighten to 3 Nm (2 lb.ft).
2. Position the driver air bag module and connect the 3 electrical connectors.
3. Locate the driver air bag module and carefully push to secure the clips.
4. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Note. If the SRS component is to be replaced, the bar code of the new unit must be recorded.

Scheme 48

1. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
2. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
3. Remove the instrument panel lower section. Refer to «Instrument Panel Lower Section»(/land-rover/range-rover/l322-2009-2012/remont/gauges-instrument-panels/#instrument-panel-and-console) .
4. Remove the driver lower air bag module. Remove the 10 nuts.

1. Install the driver lower air bag module. Tighten the nuts to 8 Nm (6 lb.ft).
2. Install the instrument panel lower section. Refer to «Instrument Panel Lower Section»(/land-rover/range-rover/l322-2009-2012/remont/gauges-instrument-panels/#instrument-panel-and-console) .
3. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Scheme 49

1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
2. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
3. Remove the front seat backrest cover. Refer to «Front Seat Backrest Cover»(/land-rover/range-rover/l322-2009-2012/remont/seats/#seating) .
4. Disconnect the side air bag module electrical connector.
5. Remove the front seat side air bag module. Remove and discard the nut.

1. Install the front seat side air bag module. Tighten the new nut to 7 Nm (5 lb.ft).
2. Connect the side air bag module electrical connector.
3. Install the front seat backrest cover. Refer to «Front Seat Backrest Cover»(/land-rover/range-rover/l322-2009-2012/remont/seats/#seating) .
4. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Scheme 50

Scheme 51

1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
2. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
3. Remove the front seat cushion cover. Refer to «Front Seat Cushion Cover»(/land-rover/range-rover/l322-2009-2012/remont/seats/#seating) .
4. Disconnect the occupant classification sensor electrical connector. Release the 2 clips from the occupant classification sensor wiring harness.
5. Remove the occupant classification sensor. Remove the 2 clips. Reposition the occupant classification sensor wiring harness.

1. Install the occupant classification sensor. Reposition the occupant classification sensor wiring harness. Install the 2 clips.
2. Connect the occupant classification sensor electrical connector. Secure the 2 clips to the occupant classification sensor wiring harness.
3. Install the front seat cushion cover. Refer to «Front Seat Cushion Cover»(/land-rover/range-rover/l322-2009-2012/remont/seats/#seating) .
4. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
5. Using the Land Rover approved diagnostic system, calibrate the occupant classification sensor.

Scheme 52

Scheme 53

1. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
2. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
3. Remove the instrument panel end trim panel. Release sufficient door aperture seal for access. Carefully release the 4 clips. Disconnect the electrical connector from the passenger air bag deactivation switch.
4. Remove the passenger air bag deactivation switch. Release the 2 clips.

1. Install the passenger air bag deactivation switch.
2. Install the instrument panel end trim panel. Connect the passenger air bag deactivation switch electrical connector. Carefully align and secure the clips. Install the aperture seal.
3. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Note. If the SRS component is to be replaced, the bar code of the new unit must be recorded.

Scheme 54

1. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
2. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
3. Remove the instrument panel upper section. Refer to «Instrument Panel Upper Section»(/land-rover/range-rover/l322-2009-2012/remont/gauges-instrument-panels/#instrument-panel-and-console) .
4. Remove the passenger air bag module. Remove the 8 nuts.

1. Install the passenger air bag module. Tighten the nuts to 8 Nm (6 lb.ft).
2. Install the instrument panel upper section. Refer to «Instrument Panel Upper Section»(/land-rover/range-rover/l322-2009-2012/remont/gauges-instrument-panels/#instrument-panel-and-console) .
3. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Note. Removal steps in this procedure may contain installation details.

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

Scheme 60

Scheme 61

Scheme 62

1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
2. Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(/land-rover/range-rover/l322-2009-2012/remont/dtc-index/#dtc-index-general-information) .
3. Refer to «Headliner»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
4. Torque: 6 Nm
5. Torque: 6 Nm
6. Torque: 6 Nm
7. Torque: 6 Nm
8. Torque: 8 Nm
9. Torque: 9 Nm
10. Torque: 9 Nm

1. To install reverse the removal procedure.

See also:
• Standard Workshop Practices
• Front Side Air Curtain Module
• Specifications
• B-Pillar Trim Panel
• Steering Wheel
• Instrument Panel Lower Section
• Front Seat Backrest Cover
• Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS)