2002 airbag warning light

Joined
May 16, 2019
Thunderbird Year
2002
Hi fellow birders. I have never posted a question so I apologize in advance if I'm not doing it right. I own a 2002 and have had good luck with it till now. The airbag light is flashing 25. Any ideas what that means an what is the remedy?
 

doug7740

Active Member
Joined
Dec 29, 2014
Thunderbird Year
1955
Hi fellow birders. I have never posted a question so I apologize in advance if I'm not doing it right. I own a 2002 and have had good luck with it till now. The airbag light is flashing 25. Any ideas what that means an what is the remedy?
Fault code 25 indicates a PAD switch fault.

Normal Operation
The restraints control module (RCM) monitors the status of the passenger air bag deactivation (PAD) switch at C310a pin 8, circuit 8-JA26 (WH/BK). The PAD switch signals the RCM by switching a resistance to ground. If the RCM senses 900-1,100 ohms in the PAD switch, it enables the passenger air bag and turns off the PAD switch warning lamp. If the RCM senses 400-600 ohms in the PAD switch, it deactivates the passenger air bag and turns the PAD switch warning lamp on. If the RCM detects an invalid resistance, it will store a diagnostic trouble code (DTC) B1871 in memory and flash a lamp fault code (LFC) 25 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A PAD switch fault could be caused by:
- a damaged or inoperative PAD switch.
- a faulted RCM.
- a short to battery, short to ground or open on circuit 8-JA26 (WH/BK).
- a open on circuit 31-JA26 (BK/RD).

doug7740
1955 Thunderbird Blue

Air Bag Code.jpg
 
Joined
Sep 3, 2020
Thunderbird Year
2002
Yes. Thank you for responding. The cruise control is a bit tricky to activate but works fine. What do you ask about these things?
 

doug7740

Active Member
Joined
Dec 29, 2014
Thunderbird Year
1955
Airbag warning light blinks three then two several times and then stays on

Normal Operation

The restraints control module (RCM) monitors the resistance of the driver air bag ignitor by measuring the resistance between pins 3 and 4. If the RCM detects high resistance between these pins, it will store a diagnostic trouble code (DTC) B1932 in memory and flash a lamp fault code (LFC) 32 (or higher priority code if one exists) on the air bag indicator.

Possible Causes

Driver air bag high resistance can be caused by:
- a poor connection or corrosion in the driver air bag module circuits or the clockspring.
- an open circuit or high resistance in the air bag sliding contact windings.
- an open circuit or high resistance in the wiring harness.
- an open circuit or high resistance in the driver air bag module.
- a faulted RCM.

doug7740
1955 Thunderbird Blue
 
Joined
Sep 3, 2020
Thunderbird Year
2002
Normal Operation

The restraints control module (RCM) monitors the resistance of the driver air bag ignitor by measuring the resistance between pins 3 and 4. If the RCM detects high resistance between these pins, it will store a diagnostic trouble code (DTC) B1932 in memory and flash a lamp fault code (LFC) 32 (or higher priority code if one exists) on the air bag indicator.

Possible Causes

Driver air bag high resistance can be caused by:
- a poor connection or corrosion in the driver air bag module circuits or the clockspring.
- an open circuit or high resistance in the air bag sliding contact windings.
- an open circuit or high resistance in the wiring harness.
- an open circuit or high resistance in the driver air bag module.
- a faulted RCM.

doug7740
1955 Thunderbird Blue
Thank you. How, and how difficult, is it to determine which of these is causing the problem?
 

doug7740

Active Member
Joined
Dec 29, 2014
Thunderbird Year
1955
Thank you. About how much did it cost to replace clockspring?
Since your flash a lamp fault code is 32, indicating the driver air bag has high resistance and your cruise control and horn are working properly, why are you going to replace the clock spring?

doug7740
1955 Thunderbird Blue
 

doug7740

Active Member
Joined
Dec 29, 2014
Thunderbird Year
1955
Thank you. How, and how difficult, is it to determine which of these is causing the problem?
Unless you are trained and understand Supplemental Restraint Systems, I suggest that you take your vehicle to a trained professional for repairs. Accidental deployment of the air bag can cause possible personal injury.

doug7740
1955 Thunderbird Blue
 
Joined
Sep 3, 2020
Thunderbird Year
2002
Unless you are trained and understand Supplemental Restraint Systems, I suggest that you take your vehicle to a trained professional for repairs. Accidental deployment of the air bag can cause possible personal injury.

doug7740
1955 Thunderbird Blue
I, certainly , would not attempt the work. I was just wondering how difficult it might be for a mechanic to pinpoint the problem.
 
Joined
Sep 3, 2020
Thunderbird Year
2002
View attachment 24504

doug7740
1955 Thunderbird Blue
Thank you, Doug. You sure seem to be an expert on these things. Here in Tuscaloosa, Alabama, all we know is football. Only one Ford dealership far from me. Many other mechanics/auto repair shops but I’m not sure they are capable of sophisticated diagnosing of my airbag problem. There are two connections under each seat. One is gray. One is yellow. Which one is for the airbag and might that be the problem? Again, Doug, thank you.
 

doug7740

Active Member
Joined
Dec 29, 2014
Thunderbird Year
1955
All airbag connectors throughout the car are yellow, but why are you looking under the seat when the driver air bag has high resistance? Before you start disconnecting any of the airbag connectors, disconnect the battery and wait at least 10 minutes for the system to power down. Failure to do so could result in accidental airbag deployment.

doug7740
1955 Thunderbird Blue
 
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