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SRS troubleshooting

 
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Old 01-13-2011, 10:57 AM
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SRS troubleshooting

Let's see if you guys can help me here. Last week my battery went DEAD! Metered. 1v. Well I got it revived after I removed it from the car (its a high end deep cycle battery) however, before I pulled it I put the charger on it to try and get it going. Well, the charger spiked to 17v due to lack of resistance. Everything is currently fine, luckily no audio gear was damaged. Now my SRS light is on. I've checked all the fuses and eerything is good. Full 12v on the air bag cicuit. Is the brain for it dead? I know air bag components can be very voltage sensitive and I have a feeling it went T.U. any thoughs on a fix or make it an excuse for a new steering wheel lol thanks guys!
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Old 01-13-2011, 03:03 PM
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Re: SRS troubleshooting

You are right that the airbag system is "technically" a operating system all by itself. Kind of... with support/input from the ECU (speed, engine dynamics, etc.)

I am pretty sure the 5th Gen manual has a troubleshooting chart that you should print out - this gives you some tests to perform (with a VOM) and then takes you into the next stage of the problem solving procedures.

There are so many things that could have happened, the voltage spike MAY have taken out one of the dash or cowl sensors, it could have "burnt" a poor ground connection, etc, etc.

Even tho you may not be seeing a code, have you tested your ECU and ABS systems for faults?
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Old 01-14-2011, 01:52 AM
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Re: SRS troubleshooting

I'll have to check into the manual thing. The only trouble code is Cat efficiency. *uncomfortably looks up and whistles* I may hit up an acquaintance at the Honda dealer but last time I talked to him was kinda on bad terms (an ex can screw up anything)
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Old 01-14-2011, 02:06 AM
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Re: SRS troubleshooting

..........

Last edited by fezz_tec; 01-14-2011 at 02:11 AM.
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Old 01-14-2011, 02:10 AM
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Re: SRS troubleshooting

Quote:
Originally Posted by LilMsPrelude View Post
You are right that the airbag system is "technically" a operating system all by itself. Kind of... with support/input from the ECU (speed, engine dynamics, etc.)

I am pretty sure the 5th Gen manual has a troubleshooting chart that you should print out - this gives you some tests to perform (with a VOM) and then takes you into the next stage of the problem solving procedures.

There are so many things that could have happened, the voltage spike MAY have taken out one of the dash or cowl sensors, it could have "burnt" a poor ground connection, etc, etc.

Even tho you may not be seeing a code, have you tested your ECU and ABS systems for faults?
the OLD SRS systems used in Preludes are not networked with other computers in the car. the system is by-itself, has its own sensor, computer, and outputs.
likely chance of you "destroying the ECU is very unlikely, the system is built to be almost built proof, since its the most important safety feature of a vehicle.
generic scanner will not be able to access the SRS module, only Honda scanners can, as far as i know.

i think all you have to do is reset the computer,
How to reset SRS Light - Honda Forum : Honda and Acura Car Forums

this is on a accord but i think its the same procedure for our cars.
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Old 01-14-2011, 02:23 AM
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Re: SRS troubleshooting

Eeeee......not a big fan of shorting or messing with wires in yellow plugs. I work on cars for a living and pretendthey will bite me. I really hate airbag systems. They scare the crap outta me. And besides, what's wrong with a good ol seat belt!? Thank you very much for the link I appreciate it.
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Old 01-14-2011, 02:44 AM
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Re: SRS troubleshooting

you'll be fine, the sensor activate the air bags, the plug is of diagnostics only, it will not set of the airbags.

i have never done them on preludes, but i have however done on plenty of Toyota's with no problem.
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