Honda Bmw 5 Service Manual
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Page 951
721 -3 Airbag System (SRS) MRS Ill adds the following features: MRS Ill employs smart technology. Smart technology re- fers to the control modules programming for the deploy- ment of the airbags, in stages depending on the severity of the impact. Two-stage a~rbag for ooln drver and passenger Alloivs for a softer c~snioning elfecl when the airbags are lr ggered at lighter impact, MRS Ill satellite sensors use 2 wire connectors Rear side airbags arrive de-activated from the...
Page 952
I Airbag System (SRS) Two-stage airbag (MRS Ill) Beginning with 2000 model year (911 999 production) the front airbags were changed to a two-stage style airbag. This en- sures that the force of airbag inflation is not greater than nec- essary to provide protection. The airbags are designed to Drovide soit de~lovment if the acceleration sensor detects a iow-speed impact, and hard deployment in higher speed im- pacts. NOTE- A two-stage passenger airbag was used on cars built be-...
Page 953
Airbag System (SRS)~ Warnings When servicing airbag equipped cars, the following precau- tions must be observed to prevent personal injury. WARNING- . If the airbag indicator light is on, there is a risk that the air- bags will not be triggered in case of an accident Be sure to have the system inspected and repaired immediately Airbag(s) are inflated by an explosive device. Handled improperly or witliout adequate safeguards, the system can be very dangerous. Special...
Page 954
721-6 I Airbag System (SRS) MRS The MRS control module contains the electronic crash sensor for frontal impact. Sensors mounted on the driver and pas- sengerfloor are used for side impacts. The MRS control mod- ule is located between the front seat under the center console. MRS airbag system diagram 1. Drivers side airbag 2. Passengers side airbag 3. Right side impact sensor 4. Seat occupancy sensor pad 5. Right side impact airbag 6. SBE control module (analog to...
Page 955
Airbag System (SRS)~ MRS control module, replacing - Disconnect negative (-) cable from battery and cover nega- tive terminal with insulating material. CAUTIOI\C Prior to disconnecting the battery, read the battery discon- nection cautionsgiven in001 General Warnings and Cau- tions. - Remove center console between front seats. See 513 lnteri- or Trim. Remove module mounting nuts (arrows) and lift up control module. Disconnect electrical harness connector. Installation is...
Page 956
721 -8 (Airbag System (SRS) 4 Remove electrical harness connector from crash sensor (A). Remove sensor retaining screws (6) and remove sensor. Note direction of sensor before removing. - Installation is reverse of removal, NOTE - Arrow on sensor must point to door sill. Driver airbag, removing and installing - Disconnect negative (-) cable from battery and cover nega- tive terminal with insulating material. WARNING- After disconnecting the batter)! wait 5 seconds before...
Page 957
721 -9 Airbaq System ~SRS)~ 4 Sport steering wheel: Insert screwdriver through opening in rear of steering wheel and push against spring tension to release airbag unit lock. Repeat procedure on other side of steering wheel. Lift off airbag unit and detach electrical harness connec- tors. WARNING- Store the removedairbag unit with the horn pad facing up. If stored facing down, accidental deployment could propel it violently into the air, causing injury. Once an...
Page 958
721 -1 0 /Airbag System (SRS) 4 Pry up cover from top of passenger side airbag on dash- board. 4 Remove airbag mounting bolts (arrows) - Lift airbag and disconnect electrical harness connector. Re- move airbag. WARNING- Store the removed airbag unit with the soft pad facing up. If stored facing down, accidental deployment could propel it vi- olentlv into the ail: causino inium - Installation is reverse of removal. Make sure wiring harness is not pinched when installing...
Page 959
721 -1 1 Airbag System (SRS)~ Front door airbag: Remove airbag mounting bolts (arrows). Disconnect electrical harness connector. CAUTIOI\C When removing andinstalling the airbag unit, pay attention to the routing of the electrical harness to avoid kinks or breaks in the wire. Installation is reverse of removal, Rear door airbag: Detach electrical harness connector. Remove mounting bolts and remove airbag from door. - Installation is reverse of removal. Route electrical...
Page 960
721-12 Airbag System (SRS) Head protection airbag (HPS) 4 Replacement of a head protection airbag (HPS) is an exten- sive operation, including removal of the following: Complete dashboard Complete headliner Windshield pillar (A-pillar) trim Door pillar (B-pillar) trim - Before starting work on the HPS airbag, disconnect negative (-) cable from battery and cover negative terminal with insu- lating material. Prior to disconnecting the battery, read the battery discon- nection...