Question about 2002 Honda Accord

1 Answer

SRS Light - Expect a hand off

Hey Ed,

Need your help for the first step here. The question was posted twice as a "I have the same problem", so there may be more than one request.

Error/Fault codes need to be extracted to get an idea where the problem is. If you could help with that, I can take it from there (If need be). Most shops just go for replacing the brain and hope for the best on the sensors. If the brain isn't holding its firing charge, then replacement is necessary. But I always try to save the Asker money. Soooooo,

Anyway, my response (so far):

Hi there,

Thank you for the compliments, I will do my best to live up to them. I like to provide as much info as possible on so serious a subject. So please be patient with the overwhelm.

My main experience in handling Airbags was the extraction of them at a wrecking yard for resale. Specifically the safe handling of undeployed airbags AFTER a crash. In the 15 months I was at this location, I pulled well over three hundred of them with zero accidental deployments.

Click here for precautions to take when handling, working with on or near airbag systems. I supply these as a cautionary bit of advice for anyone who might be working near these systems.

The problem you are describing is a coming from what is commonly referred to as the DERM (Diagnostic/Energy Reserve Module). To be honest, I'm not sure what Honda calls their version of the DERM. For lack of a better term, call it the Brain Module.

The brain makes sure your system is in working order, receives sensor info and holds a charge that deploys the airbags even if the battery gets destroyed in a crash. That charge why even a car without a battery can still deploy an airbag by surprise.

Every time you start your vehicle, this module performs system diagnostics (indicated when your SRS light blinks). After a successful diagnostic, the SRS light goes out. When it stays on, that means there is a fault.

Now here is the area I'm weak in. The fault the brain module found is held in storage. As you may imagine, running diagnostics on wrecked vehicles wasn't a top priority. As such, I can't advise you on the next step you need to take, which is how to retrieve these codes. They will indicate the type of fault and where it is in the system.

I'm not sure if your Honda has an ODBII diagnostic option or if system error codes are retrieved via another route. For this, I would have to refer you back to Toyota Ed.

I can tell you that in 2004, the price of individual airbags was usually over $500.00. Airbag sets and the brain from a single vehicle was over $1,000.00

While the dealership can definitely fix it, the cost could approach $1,000.00. We, here at FixYa consider that to be a solution of the last resort.

So, I hope this helps, but I must hand this problem back to Toyota Ed temporarily in order to get those codes.

I'll be waiting when they are retreived.
Mike

Posted by on

  • Justin Case
    Justin Case Feb 03, 2009

    Thanks Ed,

    I learn things every time we converse. The DERM acronym must've stuck because of the Chevy association.

    Part of processing vehicles at a wrecking yard (U-Pull-It type yard) is removing components that could possibly be injurious to the public (air bags, gas, batteries). The classes I attended leaned heavy toward safe extraction of undeployed airbags after a crash (Wrecking Yard mentality and point of view), the diagnostic aspect was not considered to be useful under the circumstances.

    We received occasional notifications of accidental deployment, the circumstances believed to be the cause and any additional precautions. I group the precautions together for the askers benefit.

    I like the D-9 analogy, that would do it in the 60-to-0 category.

    I try to make them take what they're doing seriously, to err on the side of caution.

    Saw one recently that suggested pulling the yellow connectors, sticking paper clips in and gave non-specific instructions on touching them to different surfaces. What if the Asker decided to check resistance with a VOM? Jeez.

    The reason for the handoff was any error codes that might show from the Honda that may point to a single component. I don't know the particulars on a Honda for extracting them. I was pretty sure you would have a handle on it though. A heads up on the possibility of a request.

    Thanks Ed

    Mike


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Hello. That was very good input to the Client. Regarding the "Brain", or, more commonly known as the Center Air Bag Sensor, it does hold a charge for 90 seconds in the event of a castrophic battery failure due to impact. It would be rare that the CABS would blow a bag just being installed, as the front sensors and the G (or decel) sensor all have to have a "handshake" to blow the bag(s).
The G sensor only activates if the inertia switch sees a 35 and above immediate decel to zero. Sort of like hitting a D-9 blade.
A "right-now" stop. Let me know if you need more info.

Posted on Feb 02, 2009

  • Toyota Ed Feb 03, 2009

    Most of the codes are pretty standardized, with the OBD2 system currently in place. Get me the codes, I can decipher them.

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2 Answers

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It is a yellow connector with two wires in it that is plugged into the fuse box, unplug it and pull it down. Once you have done that you can begin the process of erasing the memory. NOTE: This will only reset your SRS System if what caused it to trigger has been fixed, Ex: turning the ignition on with any SRS Plugs disconnected, such as pulling your seat out.

1st step in erasing the memory is to turn the ignition off and connect the SCS Service connector to the MES Plug.

2nd Turn Ignition on. SRS indicator light will come on for about 6 seconds then go off.

3rd Disconnect SCS service connector for MES connector within 4 seconds after SRS indicator light goes off. SRS indicator light will come on again.

4th Reconnect SCS service connector the MES connector within 4 seconds after SRS light comes on. SRS indicator light will go off.

5th Disconnect SCS service connector from MES connector within 4 seconds. SRS indicator light will indicate that memory is erased by blinking 2 times.

6th Turn ignition off, and wait 10 seconds. Start vehicle like normal and light should come on and go out like normal. You have reset your SRS light, congrats.

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1 Answer

One for you


Hey Ed,

Need your help for the first step here. Error/Fault codes need to be extracted to get an idea where the problem is. If you could help with that, I can take it from there. Most shops just go for replacing the brain and hope for the best on the sensors. If the brain isn't holding its firing charge, thenm replacement is necessary. But I always try to save the Asker money. Soooooo,

Anyway, my response (so far):

Hi there,

Thank you for the compliments, I will do my best to live up to them. I like to provide as much info as possible on so serious a subject. So please be patient with the overwhelm.

My main experience in handling Airbags was the extraction of them at a wrecking yard for resale. Specifically the safe handling of undeployed airbags AFTER a crash. In the 15 months I was at this location, I pulled well over three hundred of them with zero accidental deployments.

Click here for precautions to take when handling, working with on or near airbag systems. I supply these as a cautionary bit of advice for anyone who might be working near these systems.

The problem you are describing is a coming from what is commonly referred to as the DERM (Diagnostic/Energy Reserve Module). To be honest, I'm not sure what Honda calls their version of the DERM. For lack of a better term, call it the Brain Module.

The brain makes sure your system is in working order, receives sensor info and holds a charge that deploys the airbags even if the battery gets destroyed in a crash. That charge why even a car without a battery can still deploy an airbag by surprise.

Every time you start your vehicle, this module performs system diagnostics (indicated when your SRS light blinks). After a successful diagnostic, the SRS light goes out. When it stays on, that means there is a fault.

Now here is the area I'm weak in. The fault the brain module found is held in storage. As you may imagine, running diagnostics on wrecked vehicles wasn't a top priority. As such, I can't advise you on the next step you need to take, which is how to retrieve these codes. They will indicate the type of fault and where it is in the system.

I'm not sure if your Honda has an ODBII diagnostic option or if system error codes are retrieved via another route. For this, I would have to refer you back to Toyota Ed.

I can tell you that in 2004, the price of individual airbags was usually over $500.00. Airbag sets and the brain from a single vehicle was over $1,000.00

While the dealership can definitely fix it, the cost could approach $1,000.00. We, here at FixYa consider that to be a solution of the last resort.

So, I hope this helps, but I must hand this problem back to Toyota Ed temporarily in order to get those codes.

I'll be waiting when they are retreived.
Mike

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This one is for Rmallla,

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It was hard to track you down. Thank you for the compliments, I will do my best to live up to them. I also like to receive Fixya ratings. So I always try to do my best. The answer to your problem is going to be a joint effort. For part of it, I'm going to have another Expert help you. Then I'll finish.

This is a serious subject, so I'm going to provide as much info as possible. So please be patient with the overwhelm.

My main experience in handling Airbags was the extraction of them at a wrecking yard for resale. Specifically the safe handling of undeployed airbags AFTER a crash. In the 15 months I was at this location, I pulled well over three hundred of them with zero accidental deployments.

Click here for precautions to take when handling, working with on or near airbag systems. I supply these as a cautionary bit of advice for anyone who might be working near these systems.

The problem you are describing is a coming from what is commonly referred to as the DERM (Diagnostic/Energy Reserve Module). To be honest, I'm not sure what Honda calls their version of the DERM. For lack of a better term, call it the Brain Module.

The brain makes sure your system is in working order, receives sensor info and holds a charge that deploys the airbags even if the battery gets destroyed in a crash. That charge why even a car without a battery can still deploy an airbag by surprise.

Every time you start your vehicle, this module performs system diagnostics (indicated when your SRS light blinks). After a successful diagnostic, the SRS light goes out. When it stays on, that means there is a fault.

Now here is the area I'm weak in. The fault the brain module found is held in storage. As you may imagine, running diagnostics on wrecked vehicles wasn't a top priority. As such, I can't advise you on the next step you need to take, which is how to retrieve these codes. They will indicate the type of fault and where it is in the system.

I'm not sure if your Honda has an ODBII diagnostic option or if system error codes are retrieved via another route. For this, I would have to refer you back to Toyota Ed.

Click here for his profile, then click the 'AskMe' button under that Gold Star.

I can tell you that in 2004, the price of individual airbags was usually over $500.00. Airbag sets and the brain from a single vehicle was over $1,000.00

While the dealership can definitely fix it, the cost could approach $1,000.00. We, here at FixYa consider that to be a solution of the last resort.

So, I hope this helps, but I must hand this problem back to Toyota Ed temporarily in order to get those codes.

I'll be waiting when they are retrieved.
Mike

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