Auto Service Professional

JUN 2018

Magazine for the auto service professional

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J u n e 2 018 A SP 61 working with a fully charged battery before and during a flashing or programming event or the OCS setup will ensure a proper repair. oroughly reading and understanding the SRS failure code is important. Honda issued a service bulletin that points out that a problem in the front passenger's side airbag inflator or the drivers side airbag inflator isn't the airbag assembly in the dash or the steering wheel, as many techs assumed. Carefully reading the SRS code they can easily miss the word SIDE in the code or component description and in the case of a Honda, that means the side airbag assem- blies in the seats. Ensuring that all the connector position assurance (CPA) retainer locks are installed is critical or the shorting bars could still be en- gaged, possibly setting a code that wasn't there before. Little CPA's are commonly used on the driver's airbag and they can easily be dam- aged, dropped or misplaced during a non-SRS service, such as an ignition switch, turn signal switch or steering column service. e result is an SRS light on and a low resistance code that wasn't there before the repair, even though the connector is properly attached. Another common SRS system issue involves no module communication or code display, but an illuminated SRS light. is issue can be the result of the wrong parts being installed, un- programmed modules, unseen wiring damage or by components that aren't set up correctly. But this can also be caused by a reset/refur- bished SRS module. Remembering that they are single-use is important, as is asking about the vehicle history or previous repairs, which may save time in an SRS diagnostic. ere are some safe shortcuts that can be used to successfully diagnose some SRS faults. Yes, a scanner is likely going to be required for diagnostics and repairs, but it may not have to be a factory tool. And with the proper tech- niques, the correct equipment, full vehicle history, up-to-date service information and a working knowledge of the system, an SRS issue should be no more difficult to diagnose than many of today's modern engine controls. ■ S R S D i a g n o s t i c s Jeff Taylor boasts a 33-year career in the automotive industry with Eccles Auto Service in Dundas, Ontario, as a fully licensed professional lead technician. While continuing to be "on the bench" every day, Jeff is also heavily involved in government focus groups, serves as an accomplished technical writer and has competed in international diagnostic competitions as well as providing his expertise as an automotive technical instructor for a major aftermarket parts retailer. Many SRS connectors feature a built- in shorting bar. The arrow indicates the shorting bar in the connector. On this Honda seat belt, the common failure is in the 3-wire connector that contains the seat belt switch. It's worth noting the wire colors are different on the seat belt side, the test instructions are for the wire colors on the harness side. C O N T I N U E D F RO M PA G E 5 7

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