Air Bag Restraint Systems Land Rover Freelander L314

DESCRIPTION & OPERATION

The Supplemental Restraint System (SRS), also known as air bag system, is designed to provide additional protection for driver and front passenger by deploying air bags and front seat belt buckle pretensioners in a front-end collision. The air bags, stored in center of steering wheel and in instrument panel above glove box, deploy in about 40 milliseconds after impact sensors close. The seat belt buckle pretensioners, located in the seat belt anchors, are deployed in conjunction with the air bags. The air bag system is designed to be used with the 3-point seat belt system.

The main components of the air bag system are driver-side and passenger-side air bag modules, rotary coupler (clockspring), air bag Diagnostic Control Unit (DCU), driver and passenger seat belt pretensioners (contained in seat belt buckle assemblies), and AIR BAG warning light (SRS warning light). See COMPONENT LOCATIONS .

COMPONENT LOCATIONS

Refer to illustration for component locations. (Scheme 1)

Scheme 1

SERVICING

Air bag modules must be replaced after 10 years from the date of manufacturer. Seat belt buckle pretensioners must be replaced after 15 years from the date of manufacture. Date of manufacture is located on certification plate attached to lock pillar (center pillar) of left front door.

SYSTEM OPERATION CHECK

Turn ignition switch to ON position. AIR BAG warning light should illuminate for approximately 5 seconds while air bag Diagnostic Control Unit (DCU) performs self-diagnosis. AIR BAG warning light will then go off if air bag system is functioning properly. If self-diagnosis by DCU reveals existing faults, AIR BAG warning light will go off for one second and then turn back on. Air bag system may not operate in event of a collision if AIR BAG warning light is on. AIR BAG warning light will also come on if low voltage condition is present, but will go off when voltage condition is corrected.

AIR BAG SAFETY PRECAUTIONS

Observe these precautions when working on air bag systems

1. Disable air bag system before servicing any air bag system, instrument panel, electrical system, steering column, or seat belt buckle pretensioner components. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) .
2. Before attempting to service air bag system, remove key from ignition and disconnect both battery terminals. Air bag system has back-up power source which is capable of deploying air bags and seat belt buckle pretensioners for up to 10 minutes after battery cables are disconnected. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) .
3. When placing a live air bag on a bench or other surface, ensure trim cover is facing up, away from surface. If air bag is stored face down, accidental deployment will propel module through air with force sufficient to cause serious injury.
4. DO NOT expose air bag system components to temperatures in excess of 185°F 85°C ).
5. Air bag system faults can only be diagnosed using Land Rover Test Book tester. DO NOT use electrical test equipment while attempting to service air bag system. Disconnecting or probing air bag system connectors could result in accidental deployment or system damage.
6. If air bag module or other components have been dropped, or there are cracks, dents or other defects visible, replace with NEW parts.
7. DO NOT attempt to measure resistance across air bag module squib connector. Accidental air bag deployment is possible which could cause personal injury.
8. After deployment, air bag surface may contain deposits of sodium azide, a toxic, flammable substance. Always wear safety glasses, rubber gloves and long-sleeved shirt during clean-up. Wash hands using mild soap and water.
9. Never allow sodium azide to mix with water, acids or heavy metals. Harmful or explosive compounds can be produced.
10. Never attempt to incinerate or dismantle air bag or seat belt buckle pretensioner. After deployment, components will be very hot. Allow at least 30 minutes for cooling before handling air bag modules or pretensioners.
11. When carrying a live air bag module, make sure to face trim cover away from your body. In event of accidental deployment, this will reduce the risk of serious injury.
12. Never install used air bag system components from another vehicle. Always use NEW parts.
13. Always use NEW bolts (special Torx bolts for air bag modules) when installing any air bag system component. Ensure bolts are always tightened to correct torque.
14. Never install electrical or electronic equipment into air bag system electrical system. Air bag harness has a Yellow outer covering.
15. After work is complete on air bag system, ensure system is functioning properly. See «SYSTEM OPERATION CHECK»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

DISABLING & ACTIVATING AIR BAG SYSTEM

DISABLING SYSTEM

Remove key from ignition switch. Disconnect negative, then positive battery cables. Wait 10 minutes before beginning work.

ACTIVATING SYSTEM

Ensure ignition switch is off and key is removed. Reconnect positive, then negative battery cables. Perform system operation check. See SYSTEM OPERATION CHECK .

DISPOSAL PROCEDURES

Disposal of undeployed components may be a violation of federal, state, and local laws. If a vehicle is to be removed from service (scrapped), air bag system components should be deployed while installed in vehicle. If this is impossible or if vehicle is being placed back into service, remove components and deploy outside vehicle. See OFF-VEHICLE DEPLOYMENT .

Deployment Tool (Smd 4082/1)

1. Using Deployment Tool (SMD 4082/1), connect Blue and Yellow connectors of tool lead into corresponding sockets on face of deployment tool. Connect alligator clips of tool lead to 12-volt battery (Red clip to positive terminal and Black clip to negative terminal). Red "READY" light on face of deployment tool should illuminate.
2. Depress and hold both buttons on face of deployment tool. Green "DEFECTIVE" light should illuminate. Release both buttons. Red "READY" light will illuminate again. Disconnect tool from battery and disconnect Blue and Yellow connectors from face of tool. Tool is ready for use.

ON-VEHICLE DEPLOYMENT (SCRAPPED VEHICLE ONLY) (SMD 4082/1)

Driver-side AIR Bag (Smd 4082/1)

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. Ensure condition of Deployment Tool (LRT-86-003) and Deployment Tool Lead (LRT-86-003-01) are suitable to proceed. Remove steering column covers.
2. Disconnect rotary coupler (clockspring) connector from air bag harness. Connect deployment tool lead to rotary coupler connector. Connect deployment tool lead to deployment tool.
3. Move at least 50 feet (15.2 m) from air bag module. Connect deployment tool to battery. Ensure no one is within 50 feet (15.2 m) of air bag module. Depress button on deployment tool to deploy air bag module.
4. Wait at least 30 minutes before proceeding. Wearing safety glasses, rubber gloves and long-sleeved shirt, disconnect deployment tool from air bag module. Remove deployed air bag module from holding fixture and seal in sturdy plastic bag. If air bag module cannot be deployed, contact vehicle manufacturer for further instructions.
5. If vehicle is to be scrapped, remove and dispose of all other air bag system components (including steering wheel and steering column) to ensure they are not reused.

Passenger-side AIR Bag (Smd 4082/1)

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. If using Deployment Tool (SMD 4082/1), perform «DEPLOYMENT TOOL TEST»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) . If using Deployment Tool (LRT-86-003), ensure condition of deployment tool and Deployment Tool Lead (LRT-86-003-01) are suitable to proceed. NOTE: Never position your body over top of air bag module while disconnecting or connecting harness connectors.
2. Remove passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Connect Deployment Tool Lead (SMD 4082/4 or LRT-86-003-04) to passenger-side air bag module connector. Install passenger-side air bag module. See «PASSENGER-SIDE AIR BAG MODULE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION.
3. Connect deployment tool lead to appropriate deployment tool. Move at least 50 feet (15.2 m) from air bag module. Connect deployment tool to battery. Ensure no one else is within 50 feet (15.2 m) of air bag module. Depress both buttons on face of SMD deployment tool or single button on LRT deployment tool to deploy air bag module.
4. Wait at least 30 minutes before proceeding. Wearing safety glasses, rubber gloves and long-sleeved shirt, disconnect deployment tool from air bag module. Remove deployed air bag module from holding fixture and seal in sturdy plastic bag. If air bag module cannot be deployed, contact vehicle manufacturer for further instructions.

Seat Belt Buckle Pretensioner (Smd 4082/1)

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. If using Deployment Tool (SMD 4082/1), perform «DEPLOYMENT TOOL TEST»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) . If using Deployment Tool (LRT-86-003), ensure condition of deployment tool and Deployment Tool Lead (LRT-86-003-01) are suitable to proceed.
2. Move front seat fully rearward. Disconnect Yellow seat belt buckle pretensioner harness connector, located under inboard side of front seat. Connect Deployment Tool Lead (SMD 4082/30 or LRT 86-003-04) to seat belt buckle pretensioner connector. Connect deployment tool lead to appropriate deployment tool. Ensure seat belt buckle pretensioner is secured to seat.
3. Move at least 50 feet (15.2 m) from seat belt buckle pretensioner. Connect deployment tool to battery. Ensure no one else is within 50 feet (15.2 m) of seat belt buckle pretensioner. Depress both buttons on face of SMD deployment tool or single button on LRT deployment tool to deploy air bag module.
4. Wait at least 30 minutes before proceeding. Wearing safety glasses, rubber gloves and long-sleeved shirt, disconnect deployment tool from seat belt buckle pretensioner. Remove deployed seat belt buckle pretensioner from seat, place in sturdy plastic bag and seal. If seat belt buckle pretensioner cannot be deployed, contact vehicle manufacturer for further instructions.

OFF-VEHICLE DEPLOYMENT (SMD 4082/1)

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-system) under DISABLING & ACTIVATING AIR BAG SYSTEM. If using Deployment Tool (SMD 4082/1), perform «DEPLOYMENT TOOL TEST»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems). If using Deployment Tool (LRT-86-003), ensure condition of deployment tool and Deployment Tool Lead (LRT-86-003-01) are suitable to proceed.
2. Position Air Bag Holding Fixture (SMD 4082/2 or LRT-86-007-02) in vice. Ensure vice jaws grip tool above bottom flange. (Scheme 2) Install mounting brackets (SMD 4082/8 or LRT-86-007-05) onto appropriate air bag holding fixture. Remove driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION.
3. Install driver-side air bag module onto air bag holding fixture, making sure module is securely mounted. Connect Deployment Tool Lead (SMD 4082/4 or LRT-86-003-08) to driver-side air bag connector. Connect deployment tool lead to appropriate deployment tool.
4. Move at least 50 feet (15.2 m) from air bag module. Connect deployment tool to battery. Ensure no one is within 50 feet (15.2 m) of air bag module. Depress both buttons on face of SMD deployment tool or single button on LRT deployment tool to deploy air bag module.
5. Wait at least 30 minutes before proceeding. Wearing safety glasses, rubber gloves and long-sleeved shirt, disconnect deployment tool from air bag module. Remove deployed air bag module from holding fixture and seal in sturdy plastic bag.
6. If vehicle is to be scrapped, remove and dispose of all other air bag system components (including steering wheel and steering column) to ensure they are not reused. If air bag module cannot be deployed, contact vehicle manufacturer for further instructions.

Passenger-side AIR Bag & Seat Belt Buckle Pretensioner (Smd 4082/1)

Off-vehicle deployment procedures are not available.

Scheme 2

POST-COLLISION INSPECTION

When a vehicle has been involved in a collision, certain components of the passive restraint system must be inspected or replaced. See AIR BAG/SRS COMPONENT INSPECTION & REPLACEMENT TABLES article in the GENERAL INFORMATION section.

REMOVAL & INSTALLATION

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Remove heater assembly. See «HEATER ASSEMBLY»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) . Disconnect DCU connector. Remove and discard 3 Torx bolts and remove DCU from vehicle.
2. To install, reverse removal procedure. Tighten NEW DCU Torx bolts to specification. See «TORQUE SPECIFICATIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system.

1. Release ashtray assembly from rear of console, disconnect power socket connector and remove assembly. (Scheme 3) Remove console cover mat, open center console cover and remove console box. Remove 2 screws securing rear of console. Remove console hole cover and 2 screws securing front of console.
2. Disconnect power window switch connectors. Release harness clips inside rear console. Remove rear console section of center console. Using special tool (SMD 4091) or equivalent, remove radio. Disconnect radio connectors and antenna lead. Remove shift lever knob. On manual transmission equipped models, remove descent selector.
3. On all models, remove 3 heater control knobs. Remove 2 screws and heater control panel. Release tabs and remove radio housing. (Scheme 4) Remove 2 screws from top of front console. Remove 4 heater control screws. Remove 3 screws from sides and center of front console. Disconnect connectors and bulb holder from switch packs on back of front console.
4. On automatic transmission equipped models, disconnect shift selector connectors. Remove front console section of center console. To install, reverse removal procedure.

Scheme 3

Scheme 4

Remove clock finisher from instrument panel. (Scheme 5) Remove 2 screws securing clock to instrument panel. Pull out clock, disconnect connector and remove from vehicle. To install, reverse removal procedure.

Scheme 5

Removal

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Turn steering wheel 90 degrees from horizontal. Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system).
2. From behind steering wheel, remove 2 Torx bolts retaining driver-side air bag module to steering wheel. (Scheme 6) Lift driver-side air bag module away from steering wheel and disconnect connector. Remove air bag module from vehicle.

Note. If air bag module is being replaced, make note of bar code serial number on replacement module prior to installation.

Installation

Connect connector to driver-side air bag module. Position module on steering wheel and install Torx bolts. Tighten bolts to specification. See TORQUE SPECIFICATIONS . Activate air bag system.

Scheme 6

1. Drain cooling system into an appropriate container. Disconnect heater hoses at heater core. Remove instrument panel. See «INSTRUMENT PANEL»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems). Remove 2 console support bracket bolts, release 2 relays from bracket and remove bracket. Disconnect 4 heater control connectors. (Scheme 7)
2. Disconnect heater connector and release diagnostic socket. (Scheme 8) Disconnect evaporator connector, if equipped with A/C. Remove left and right side outer vent duct bolts and release ducts from heater. (Scheme 9) Release left and right side defroster vent ducts. (Scheme 10) Release air inlet connector hose. Release 2 harness clips from heater.
3. Remove 2 nuts and one bolt securing heater-to-body and remove heater assembly. To install, reverse removal procedure.

Scheme 7

Scheme 8

Scheme 9

Scheme 10

1. Remove center console. See «CENTER CONSOLE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems). Remove rotary coupler. See «ROTARY COUPLER (CLOCKSPRING)»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems). Disconnect 4 wiper/washer switch connectors. Loosen clamping screw and remove wiper/washer switch. (Scheme 11) Remove 2 steering column lower finisher screws and finisher.
2. Open glove box door. Remove fuse box cover. Disconnect 2 fuse box connectors. (Scheme 12) Close glove box. Remove clock. See «CLOCK»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems). Remove front door weatherstrip. To remove inside garnish moulding, pull out to release 4 clips.
3. Remove passenger side air bag. See «PASSENGER-SIDE AIR BAG MODULE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems). Disconnect 2 main harness-to-instrument panel connectors. (Scheme 13) Remove 12 bolts retaining instrument panel to vehicle. (Scheme 14) Using an assistant, remove instrument panel. To install, reverse removal procedure.

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system). Remove 2 screws and air bag lower finisher. (Scheme 15) Remove 4 Torx bolts retaining passenger-side air bag module to instrument panel.
2. Lift module out of instrument panel and disconnect connector from harness. Remove module from vehicle. If module is to be replaced, record bar code serial number.

Note. If air bag module is being replaced, make note of bar code serial number on replacement module prior to installation.

Connect passenger-side air bag module to harness. Position module into instrument panel, and install 4 Torx bolts. Tighten bolts to specification. See TORQUE SPECIFICATIONS . Install air bag lower finisher. Activate air bag system.

Scheme 15

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Remove steering wheel. See «STEERING WHEEL»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) . Remove steering column covers. Disconnect 2 rotary coupler connectors from harness. Remove 4 screws and rotary coupler from steering column.
2. To install, reverse removal procedure. Ensure rotary coupler is centered. To center, gently rotate coupler clockwise and counter-clockwise until white segment appears on indicator wheel. Activate air bag system.

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Remove rear console. See «CENTER CONSOLE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Disconnect seat belt buckle pretensioner connector. Remove Torx bolt securing seat belt buckle pretensioner to seat and remove seat belt buckle pretensioner.
2. To install, reverse removal procedure. Tighten bolts to specification. See «TORQUE SPECIFICATIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system.

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Remove driver-side air bag module. See «DRIVER-SIDE AIR BAG MODULE»(/land-rover/freelander/l314-2003-2006/remont/airbag/#air-bag-restraint-systems) . Disconnect rotary coupler connector.
2. Place front wheels in straight-ahead position. Loosen steering wheel nut. Release steering wheel from steering shaft (use appropriate puller, if necessary). Remove and discard steering wheel nut. Remove steering wheel. Secure rotary coupler (clockspring) in position with tape to prevent movement.

Remove tape from rotary coupler (clockspring). Install steering wheel onto steering shaft. Install NEW self locking nut on steering shaft and tighten to specifications. See TORQUE SPECIFICATIONS . Connect rotary coupler connector. Install driver-side air bag module. Activate air bag system.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

DIAGNOSTICS

Air bag system diagnostic information is not available. All air bag system diagnosis must be accomplished using proprietary Land Rover Test Book or T4 diagnostic system.

Air Bag System Wiring Diagram (Freelander). Scheme 16

See also:
• AIR BAG/SRS COMPONENT INSPECTION & REPLACEMENT TABLES
• AIR BAG SAFETY PRECAUTIONS
• COMPONENT LOCATIONS
• DISABLING & ACTIVATING AIR BAG SYSTEM
• SYSTEM OPERATION CHECK
• OFF-VEHICLE DEPLOYMENT
• DISABLING SYSTEM
• DEPLOYMENT TOOL TEST
• TORQUE SPECIFICATIONS