TeamCapri

Tech, Repairs, Upgrades => Capri N/A 89-94 => Topic started by: oz-fire on March 04, 2016, 06:38:46 AM

Title: '94 Airbag ,back-up battery
Post by: oz-fire on March 04, 2016, 06:38:46 AM

Can someone let me know the location of the air-bag back-up battery. Also if it was to be temporarily disconnected does it affect the air-bag when reconnected?  (Does the air bag need to reset or similar?)

Title: Re: '94 Airbag ,back-up battery
Post by: greywolf27030 on March 04, 2016, 08:37:58 AM

Air bag backup battery.  The first I'd heard of this one.  Could that be the reason my air bag beeps when the ignition is off?  Very interested in this thread, thanks for bringing it up.

Jack Byrd

Title: Re: '94 Airbag ,back-up battery
Post by: chrispoe on March 04, 2016, 08:43:40 AM

The airbag battery backup module is a blue box located behind the dash near the glove box and it can be easily reached through the glove box opening.

Once you reconnect the airbag backup, the system should resume normal operation upon the next ignition cycle.

Title: Re: '94 Airbag ,back-up battery
Post by: chrispoe on March 04, 2016, 08:52:57 AM

Quote from: greywolf27030 on March 04, 2016, 08:37:58 AM

Air bag backup battery.  The first I'd heard of this one.  Could that be the reason my air bag beeps when the ignition is off?  Very interested in this thread, thanks for bringing it up.

Jack Byrd

Airbag system/battery backup power loss will cause the airbag indicator light to flash 3 times.

Are you getting the 5 sets of 5 beeps? That would be airbag system telling you that the indicator light is out.

Title: Re: '94 Airbag ,back-up battery
Post by: greywolf27030 on March 05, 2016, 10:42:36 AM

Quote from: chrispoe on March 04, 2016, 08:52:57 AM

Quote from: greywolf27030 on March 04, 2016, 08:37:58 AM

Air bag backup battery.  The first I'd heard of this one.  Could that be the reason my air bag beeps when the ignition is off?  Very interested in this thread, thanks for bringing it up.

Jack Byrd

Airbag system/battery backup power loss will cause the airbag indicator light to flash 3 times.

Are you getting the 5 sets of 5 beeps? That would be airbag system telling you that the indicator light is out.

Yes on the 5 beeps and the indicator light stays on all time ignition is on, no flashing.  It also beeps when the ignition is off to the point that it will drain the battery if not cranked in a few days.

Thanks, Jack

Title: Re: '94 Airbag ,back-up battery
Post by: Rocketman on March 05, 2016, 04:02:09 PM

There is no backup battery, the module uses several large capacitors to hold a charge

Title: Re: '94 Airbag ,back-up battery
Post by: chrispoe on March 05, 2016, 10:18:43 PM

Quote from: greywolf27030 on March 05, 2016, 10:42:36 AM

Yes on the 5 beeps and the indicator light stays on all time ignition is on, no flashing.  It also beeps when the ignition is off to the point that it will drain the battery if not cranked in a few days.

Thanks, Jack

A constant indicator lamp means the diagnostic module is either disconnected or defective. From your symptoms, it sounds like your diagnostic module is bad from an internal short and is draining your battery.

Quote from: Rocketman on March 05, 2016, 04:02:09 PM

There is no backup battery, the module uses several large capacitors to hold a charge

That is correct, the backup module is nothing really more then some capacitors, diodes, and resistors.

Title: Re: '94 Airbag ,back-up battery
Post by: greywolf27030 on March 06, 2016, 08:06:26 AM

Is the diagnostic nodule the blue box behind the speedo or is that the backup module?

Thanks, Jack

Title: Re: '94 Airbag ,back-up battery
Post by: chrispoe on March 09, 2016, 09:47:49 AM

Yup, the blue box near the speedo is the diagnostic module.

The backup module is on the other side by the glove box.

Title: Re: '94 Airbag ,back-up battery
Post by: greywolf27030 on March 10, 2016, 11:09:55 AM

Quote from: chrispoe on March 09, 2016, 09:47:49 AM

Yup, the blue box near the speedo is the diagnostic module.

The backup module is on the other side by the glove box.

Thanks, Jack

Title: Re: '94 Airbag ,back-up battery
Post by: Gaz on March 17, 2016, 07:31:49 PM

Is it safe to assume these modules are the same between all years and models?

Title: Re: '94 Airbag ,back-up battery
Post by: chrispoe on March 18, 2016, 10:25:04 AM

Quote from: Gaz on March 17, 2016, 07:31:49 PM

Is it safe to assume these modules are the same between all years and models?

Yes to the back-up module and no for the diagnostic module.

The 91 and earlier diagnostic module is different than the 92+ ones.