Air Bag Restraint Systems Audi TT 8N

DESCRIPTION & OPERATION

The air bag restraint system is designed to provide increased accident protection for driver and passengers by deploying front air bags and front and rear seat belt tensioners in a front-end collision, and front side air bags when side impact is detected. The system is designed to be used with 3-point safety belts.

Main components of the system include driver-side air bag module, passenger-side air bag module, passenger-side air bag module deactivation switch, driver and passenger seat-mounted side air bag modules, front seat belt tensioners, air bag control module, side air bag crash sensors (also known as lateral acceleration sensors), data link connector, spiral spring assembly (under steering wheel, in steering column), air bag malfunction indicator light and passenger-side air bag switched off indicator light. (Scheme 1)

Air bag control module is capable of system self-diagnostics. Air bag system components are monitored electrically and any interferences in operation can be detected. These interferences (faults) are then stored in air bag control module memory. Air bag control module memory differentiates between types of faults. After diagnosis and servicing, fault memory can be erased.

COMPONENT LOCATIONS

1. For restraint system component locations, refer to illustration. (Scheme 1)

Scheme 1

SERVICING

Manufacturer recommends replacing main air bag system components (air bag modules, seat belt tensioners, spiral spring and control module) every 15 years. Replacement year and month appear on a sticker located on driver-side B-pillar. Sticker must be updated when components are replaced.

SYSTEM OPERATION CHECK

Turn ignition switch to ON position. Air bag Malfunction Indicator Light (MIL) should come on for about 4 seconds and then go out. If MIL comes on and remains on, control module has detected a system fault. See DIAGNOSTICS . If light does not glow, check bulb. If bulb is okay, perform diagnostics. See DIAGNOSTICS .

AIR BAG SAFETY PRECAUTIONS

Observe these precautions when working with air bag systems

1. Never use test light, ohmmeter or voltmeter to test air bag system, except when testing spiral spring. System can only be tested using Scan Tool (VAG1551) and Adapter (VAG1551/3). DO NOT use Air Bag Tester (VAG1619).
2. Air bag system components must never be opened, disassembled or repaired. Always use new parts.
3. Air bag system components have expiration dates listed on driver-side B-pillar. Upon expiration (15 years), components must be replaced. Air bag modules must not be stored for longer than 3 months.
4. DO NOT use air bag system components that have been dropped from heights of approximately 20" or higher. Always replace air bag components that have been mechanically damaged.
5. Disable air bag system before servicing any part of system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) .
6. Before disconnecting battery cable(s) and disabling air bag system, obtain radio security code from vehicle owner.
7. After servicing, check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .
8. DO NOT leave undeployed air bag system components unattended. Install components in vehicle immediately after removing from packaging.
9. When placing undeployed air bag modules on a bench or other surface, always make certain that trim cover faces up.
10. DO NOT allow chemical cleaners, oil, or grease to contact vinyl covering on air bag modules.
11. DO NOT expose air bag modules to temperatures greater than 212 F (100 C).
12. Use only original equipment seat covers that are designed for use with side air bags (identified by label on fabric).

CENTERING SPIRAL SPRING

If spiral spring is twisted, it must be centered before installation. From central position, spiral spring must be able to turn approximately 3 1/2 turns in both directions.

DISABLING & ACTIVATING AIR BAG SYSTEM

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . To disable air bag system, turn ignition off. Disconnect and shield negative battery cable.
2. To activate system, ensure no one is inside vehicle and turn ignition on. Reconnect negative battery cable. Perform system operation check to ensure system is functioning properly. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

DEPLOYED AIR BAGS OR SEAT BELT TENSIONER

Deployed air bag modules and seat belt tensioners can be disposed of like any other part. Handle air bag module using gloves, and wear safety glasses. Control modules contain a mercury switch and must be disposed of as hazardous material.

UNDEPLOYED AIR BAGS OR SEAT BELT TENSIONER

Undeployed air bags and seat belt tensioners must be removed from vehicle and deployed before disposal. Undeployed air bag modules and seat belt tensioners must not be disposed of at normal refuse locations. Undeployed air bag modules and seat belt tensioners contain substances which can cause illness or injury if handled improperly. Disposal of air bag modules and seat belt tensioners in any manner inconsistent with proper procedures may be a violation of federal, state and/or local laws.

Transportation of undeployed air bag modules and seat belt tensioners is subject to laws for flammable solids and regulated by Department of Transportation (DOT) and most state governments. Special shipping procedures are required. A DOT exemption label must be attached to undeployed air bag module or seat belt tensioner being shipped. This DOT exemption label is included with replacement air bag module or seat belt tensioner. Use replacement air bag module or seat belt tensioner shipping box to return undeployed component. Repair shops should check with hazardous material section of their respective state governments for applicable shipping requirements.

SCRAPPED VEHICLE

Undeployed air bags and seat belt tensioners must be removed from vehicle and deployed before scrapping vehicle. Undeployed air bag modules and seat belt tensioners must not be disposed of at normal refuse locations.

Seat Belt Tensioner

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Remove necessary parts to access seat belt tensioner to be deployed. Cut seat belt above belt lock tab. Unplug harness connector at seat belt tensioner. Connect Deployment Harness (8D1971259) to tensioner connector.
2. Extend deployment harness its full length away from vehicle and position car battery at end of harness. Ensure no one is inside vehicle. Open windows and close doors. Connect ends of deployment harness to battery terminals to immediately deploy seat belt tensioner. Allow adequate time for heat and deployment vapors to dissipate prior to entering vehicle. Dispose of tensioner like any other scrapped part.

POST-COLLISION INSPECTION

See Air Bag/SRS Component Inspection & Replacement Tables in Reference Information section.

REMOVAL & INSTALLATION

Removal

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system). Control module is located in front of center console behind footwell trim panels. (Scheme 1)
2. Pry out caps on right and left footwell panels and remove screws. Pulling footwell trim panels towards the rear of vehicle, remove trim panels. Remove control module mounting nuts. (Scheme 2) Disconnect control module connector and remove control module.

Installation

1. To install, reverse removal procedure. Tighten control module mounting nuts to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Replacement control modules must be coded. See «CODING CONTROL MODULE»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__coding-control-module) under ON BOARD DIAGNOSTIC (OBD) SYSTEM under DIAGNOSTICS. Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Scheme 2

Removal Drivers-side

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Driver-side air bag module is located on steering wheel hub.
2. Position steering spokes in vertical position and using Torx T30 socket, remove one mounting bolt on back of steering wheel. Rotate steering wheel 180 degrees and remove remaining bolt. Tilt air bag module down and disconnect air bag module harness connectors. Remove air bag module.

1. To install, reverse removal procedure. Install and tighten air bag mounting Torx screws by hand. Tighten right-side mounting screw, then left-side mounting screw to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Removal Passenger-side

Note. Passenger-side air bag module mounting bolts, support bracket and support bracket mounting bolts must be replaced if air bag has deployed.

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system).Passenger-side air bag module is located above glove box.
2. Remove right-side instrument panel end cap. Remove glove box frame screws from right-side instrument panel end. Remove remaining glove box frame screws. Pull sides of glove box frame outward and lower glove box assembly to floor. Disconnect electrical connectors. Disconnect air bag module connector. (Scheme 4) Remove air bag module support bracket mounting screws and remove air bag module. Remove support bracket from air bag module.

1. To install, reverse removal procedure. Tighten air bag module mounting screws to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Removal Side

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system). Side air bag modules are mounted in outside seat back padding of each front seat.
2. Remove front seat. Remove seat height adjustment lever. Detach air bag wiring harness and brackets from seat pan. Place seatback in forward position. Remove seat spring trim. Remove seat adjustment handle and knob. Remove seatback cover from side air bag area. Disconnect air bag connector and remaining wiring harness clips. Loosen side air bag mounting screw. (Scheme 5) Press side air bag downward, disengaging locking tabs. Remove air bag module.

1. To install, position side air bag module locking pins in corresponding holes in seat back frame. Press air bag as far upward as possible and install NEW mounting screw. Tighten air bag mounting screw to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . To complete installation, reverse removal procedure. Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Scheme 3

Scheme 4

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system). Crash sensors for side air bag modules are mounted under front seats. (Scheme 1) Remove hood release screws and handle. Remove A-pillar trim. Unclip inside of sill panel trim. Lift up carpeting covering sensor and cut wiring harness tie. (Scheme 6) Disconnect crash sensor harness connector. Remove screws and crash sensor.

1. To install, reverse removal procedure. Tighten crash sensor mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Scheme 5

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions) . Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Turn front wheels to straight-ahead position. Remove driver-side air bag module. See «AIR BAG MODULES»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Remove steering wheel nut. Remove steering wheel.

1. To install, reverse removal procedure. Tighten steering wheel nut to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system). Ensure front wheels are in straight-ahead position. Spiral spring is located under steering wheel.
2. Remove driver-side air bag module and steering wheel. See «AIR BAG MODULES»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems) and «STEERING WHEEL»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems) under REMOVAL & INSTALLATION. Release steering column adjuster and position steering wheel in full downward and outward position. Remove tilt lever handle screws and tilt lever handle. Remove upper steering column cover screws and column cover. Remove lower steering column cover screws, bolt and lower cover. Disconnect spiral spring harness connector. (Scheme 7) Release locking lugs and remove spiral spring. DO NOT turn or twist spiral spring after removal.

Scheme 6

1. To install, reverse removal procedure. Ensure front wheels are in straight-ahead position. Center spiral spring if necessary. See «CENTERING SPIRAL SPRING»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__centering-spiral-spring) under ADJUSTMENTS. Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Removal Front

1. Before proceeding, see «AIR BAG SAFETY PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__air-bag-safety-precautions). Disable air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system). Remove rear seat bench. Remove rear seatback hinge bolts, seat belt buckle bolts and rear seatback. Remove lower seat belt anchor bolt cover and bolt at outer floor panel. Remove rear seatback latch striker pin.
2. Release side trim panel clips and remove trim panel. Remove B-pillar brace nuts, bolts and brace. Remove upper seat belt guide anchor bolts and guide. Disconnect seat belt tensioner harness connector. (Scheme 8) Remove seat belt tensioner mounting bolts and tensioner.

1. To install, reverse removal procedure. Tighten nuts and bolts to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__torque-specifications) . Activate air bag system. See «DISABLING & ACTIVATING AIR BAG SYSTEM»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__disabling-activating-air-bag-system) . Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

Scheme 7

DIAGNOSTICS

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Air bag system is equipped with On Board Diagnostic (OBD) capability. If malfunction exists in a monitored sensor or other component, a Diagnostic Trouble Code (DTC) indicating type of malfunction is stored in DTC memory. Air bag Malfunction Indicator Light (MIL) in instrument cluster illuminates. DTCs remain stored in memory and MIL remains on until DTC memory is checked and erased using Scan Tool (VAG1551). If air bag system has deployed, DTC memory records whether components deployed correctly.

Connecting Scan Tool (Vag1551)

1. Connect Scan Tool (VAG1551) with Adapter (VAG1551/3) to 16-pin Data Link Connector (DLC) in lower left corner of instrument panel, to left of steering wheel. see scheme 9 If there is no display, check voltage supply to DLC.

Scheme 8

Checking & Erasing DTC Memory

1. With Scan Tool (VAG1551) connected, turn ignition on. Press button "1" to select RAPID DATA TRANSFER. Press buttons "1" and "5" to select air bag code 15. Confirm input with "Q" button. Use right arrow to scroll forward through program. After approximately 5 seconds, RAPID DATA TRANSFER and SELECT FUNCTION will appear on display. Press buttons "0" and "2" to select "Check DTC Memory" function 02. Confirm input with "Q" button. Perform appropriate diagnostic test. See «DIAGNOSTIC TESTS»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__diagnostic-tests) . Press buttons "0" and "5" to select "Erase DTC Memory" function 05. Confirm input with "Q" button. Intermittent malfunctions are indicated by "/SP" on right side of scan tool display. Press "Print" button for complete printout of scan tool operation. To conduct an automatic test sequence, enter "00" and confirm input with "Q" button.

Coding Control Module

1. With Scan Tool (VAG1551) connected, turn ignition on. Press button "1" to select RAPID DATA TRANSFER. Press buttons "1" and "5" to select air bag code 15. Confirm input with "Q" button. Use right arrow to scroll forward through program. After approximately 5 seconds, RAPID DATA TRANSFER and SELECT FUNCTION will appear on display. Press buttons "0" and "7" to select "Code Control Module" function 07. Confirm input with "Q" button. Enter air bag control module code 10102. Confirm input with "Q" button. Press buttons "0" and "6" to select "End Output" function 06. Confirm input with "Q" button. Remove key from ignition. Repeat procedure to ensure correct coding. Check system for proper operation. See «SYSTEM OPERATION CHECK»(/audi/tt/8n-1998-2003/remont/airbag/#air-bag-restraint-systems__system-operation-check) .

DIAGNOSTIC TESTS

Note. The following is a list of malfunctions recognized by air bag control module.

Possible Cause

1. Battery discharged or malfunctioning. Short in wiring.

Corrective Action

1. Charge or replace battery. Repair short in wiring.

1. Open circuit in wiring. Spiral spring defective. Driver-side air bag defective. Control module defective.

1. Locate and repair open circuit. Check spiral spring. Replace driver-side air bag. Replace control module.

1. Short circuit in wiring. Spiral spring defective. Driver-side air bag defective. Control module defective.

1. Locate and repair short circuit. Check spiral spring. Replace driver-side air bag. Replace control module.

1. Open circuit in wiring. Passenger-side air bag defective. Control module defective.

1. Locate and repair open circuit. Replace passenger-side air bag. Replace control module.

1. Short circuit in wiring. Passenger-side air bag defective. Control module defective.

1. Locate and repair short circuit. Replace passenger-side air bag. Replace control module.

1. Air bag circuit wiring damaged or control module defective.

1. Locate and repair damaged wiring. Replace control module.

1. Air bag circuit wiring damaged. Spiral spring defective. Air bag module defective. Control module defective.

1. Locate and repair damaged wiring. Check spiral spring. Replace air bag module(s). Replace control module.

1. Frontal or side collision.

1. Replace air bags, control module and other components as necessary.

1. Open circuit in wiring. Driver-side seat belt tensioner disconnected or defective. Control module defective.

1. Locate and repair open circuit. Connect harness connector. Replace control module.

1. Short circuit in wiring. Driver-side seat belt tensioner defective. Control module defective.

1. Locate and repair short circuit. Replace control module.

1. Seat belt tensioner circuit wiring damaged or control module defective.

1. Locate and repair damaged wiring. Replace control module.

1. Seat belt tensioner circuit wiring damaged. Seat belt tensioner defective. Control module defective.

1. Locate and repair damaged wiring. Replace seat belt tensioner. Replace control module.

1. Open circuit in wiring. Passenger-side seat belt tensioner disconnected or defective. Control module defective.

1. Locate and repair open circuit. Connect harness connector. Replace control module.

1. Short circuit in wiring. Passenger-side seat belt tensioner defective. Control module defective.

1. Locate and repair short circuit. Replace control module.

1. Seat belt tensioner circuit wiring damaged or control module defective.

1. Locate and repair damaged wiring. Replace control module.

1. Seat belt tensioner circuit wiring damaged. Seat belt tensioner defective. Control module defective.

1. Locate and repair damaged wiring. Replace seat belt tensioner. Replace control module.

1. Control module incorrectly coded for vehicle configuration.

1. Code control module appropriately.

1. Wiring damaged. Air bag defective. Control module defective.

1. Locate and repair open circuit. Replace air bag. Replace control module.

1. Wiring damaged. Air bag defective. Control module defective.

1. Locate and repair short circuit. Replace air bag. Replace control module.

1. Wiring damaged or control module defective.

1. Locate and repair damaged wiring. Replace control module.

1. Wiring damaged. Air bag defective. Control module defective.

1. Locate and repair damaged wiring. Replace air bag. Replace control module.

1. Wiring damaged. Air bag defective. Control module defective.

1. Locate and repair open circuit. Replace air bag. Replace control module.

1. Wiring damaged. Air bag defective. Control module defective.

1. Locate and repair short circuit. Replace air bag. Replace control module.

1. Wiring damaged or control module defective.

1. Locate and repair damaged wiring. Replace control module.

1. Wiring damaged. Air bag defective. Control module defective.

1. Locate and repair damaged wiring. Replace air bag. Replace control module.

1. Wiring damaged. Harness connector disconnected. Crash sensor defective. Control module defective.

1. Locate and repair damaged wiring. Reconnect harness connector. Replace crash sensor. Replace control module.

1. Short circuit in wiring. Crash sensor defective. Control module defective.

1. Locate and repair damaged wiring. Replace crash sensor. Replace control module.

1. Control module incorrectly coded. Control module and crash sensor mismatch.

1. Replace crash sensor. Recode control module.

1. Wiring damaged. Harness connector disconnected. Crash sensor defective. Control module defective.

1. Locate and repair damaged wiring. Reconnect harness connector. Replace crash sensor. Replace control module.

1. Short circuit in wiring. Crash sensor defective. Control module defective.

1. Locate and repair damaged wiring. Replace crash sensor. Replace control module.

1. Control module incorrectly coded. Control module and crash sensor mismatch.

1. Replace crash sensor. Recode control module.

1. Control module faulty.

1. Replace air bag control module.

1. Open circuit in wiring. Control module defective. Air bag switch defective.

1. Locate and repair damaged wiring. Replace control module. Replace air bag switch.

1. Open circuit in wiring. Control module defective. Air bag switch defective.

1. Locate and repair damaged wiring. Replace control module. Replace air bag switch.

1. Open circuit in wiring. Control module defective. Air bag switch defective.

1. Locate and repair damaged wiring. Replace control module. Replace air bag switch.

1. Control module incorrectly coded.

1. Recode control module.

Wiring damaged. Control unit faulty. Indicator light bulb defective.

Locate and repair damaged wiring. Replace control unit. Replace indicator light bulb.

1. Control module defective.

1. Replace control module.

WIRE REPAIR

No specific wire repair procedures are provided by manufacturer.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Wiring Diagram. Scheme 9

See also:
• AIR BAG SAFETY PRECAUTIONS
• DIAGNOSTICS
• DISABLING & ACTIVATING AIR BAG SYSTEM
• SYSTEM OPERATION CHECK
• TORQUE SPECIFICATIONS
• CODING CONTROL MODULE
• AIR BAG MODULES
• CENTERING SPIRAL SPRING
• DIAGNOSTIC TESTS