Airbag Light Does Not Come On

Tiny
GARRETTBUDDY
  • MEMBER
  • 1992 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
My airbag check light does not light up when I've turned my key to the utility position. I am trying to pass a provincial inspection and they are failing me on this. I took apart the dash and pulled out the module that houses the airbag light, tested the right bulb that should illuminate the airbag warning and it seems to work fine with a battery test.

I then read that I could possibly diagnose the issue by shorting out terminals on my diagnostic plug under the steering wheel. I did that (shorting terminals E1 and TC which should give me a code for airbag issues with the airbag light blinking in a certain pattern) and the light still did not illuminate. However the "cruise" light began to flash continuously, and according to the code (if the "cruise" light gives the same signals as the airbag light) that could mean either a problem with the battery or a problem with the center airbag sensor assembly.

Can I use this blinking cruise light as a diagnostic indicator for the airbag system? What other issues could this be? Is it safe to access the centre airbag sensor assembly?
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Tuesday, October 7th, 2014 AT 9:51 AM

53 Replies

Tiny
KEN
  • ADMIN
Hello,

It sounds like you have a fuse out here is the airbag wiring diagrams which show the fuses you need to check to fix the problem. This guide will help with the diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, October 8th, 2014 AT 7:44 PM
Tiny
STREET RAT
  • MEMBER
  • 1992 TOYOTA CAMRY
Electrical problem 4 cyl Front Wheel Drive Automatic 128000 miles

Air bag warning light in dash stays lit. How can I clear this out? The air bag has never been activated. The car has never had a collision.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi Street Rat,

When the airbag indicator lights stays on after more then 6 seconds when the ignition switch is turned, a malfunction code has been detected by the center air bag sensor assy.

(IMAGES BELOW)

You would need to retrieve the trouble code to find out what is causing the problem.

AIR BAG RESTRAINT SYSTEM -1992 Toyota Camry LE

Diagnostic Code Check
1. Jump together terminals Tc and E1 of Total Diagnostic Communication Link (TDCL) connector TDCL is located under left side of instrument panel near fuse block.

2. Read diagnostic codes by noting number of AIR BAG warning light flashes. Normal code indication will flash light twice per second. If a malfunction code is present, first number of code number will equal first digit of a 2-digit diagnostic code. After a 1.5-second pause, second number of code number will equal second digit.


http://www.2carpros.com/forum/automotive_pictures/192750_SRSDTC92Camryfig15_1.jpg



3. If 2 or more codes are present, a 2.5-second pause will occur between codes. After all codes are displayed, a 4-second pause will occur and codes will be repeated. After code has been identified, see appropriate diagnostic code and perform tests as specified.

4. If more than one malfunction code is present, codes will flash from smallest numbered code to highest. If malfunction code is not displayed or is continuously displayed, see TROUBLE SHOOTING. If AIR BAG warning light remains illuminated and diagnostic code is normal code, a source voltage drop is present. This malfunction is not stored in memory. If power source voltage returns to normal after approximately 10 seconds, AIR BAG warning light will automatically go out. See DIAGNOSTIC CODE NORMAL, SOURCE VOLTAGE DROP under TROUBLE SHOOTING.

5. Code 22 is recorded when a malfunction is present in air bag warning light system. If an open circuit is present in air bag warning light circuit, AIR BAG warning light will not glow. Diagnostic codes (including Code 22) cannot be confirmed until warning light circuit is repaired.

6. When a malfunction is present in SRS, malfunction Codes 11 through 31 are displayed. After repair of malfunction, Codes 11 through 31 can be cleared from memory but Code 41 will remain. A special procedure is required to clear a Code 41.

NOTE: On all models when clearing all other codes except Code 41, use Clearing Malfunction Codes (Except Code 41) procedure. On all modes with Code 41 only, use Clearing Malfunction Code 41 procedure.

Clearing Malfunction Codes (Except Code 41)

Turn ignition switch to OFF position. Remove negative battery cable or ECU "B" fuse for at least 10 seconds to clear codes. When reconnecting battery, ensure ignition switch is in LOCK position. If battery is connected with ignition switch in ACC or ON position, diagnostic system may not operate correctly.

Clearing Malfunction Code 41

1. Connect wire probes to check connector/TDCL terminals Tc and AB. See Fig. 13. Turn ignition switch to ACC or ON position and wait approximately 6 seconds. Starting with Tc terminal, apply body ground alternately to terminal Tc and terminal AB twice each, in cycles of .5-1.5 seconds.

2. When alternating probes between body ground, simultaneously release one probe from body ground while applying ground to other terminal. If time interval is too long, Code 41 will not clear. After several seconds, when AIR BAG warning light starts to blink a regular cycle, Code 41 cancellation is complete.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
STREET RAT
  • MEMBER
Found it was a bad Air Bag ECM in console that fixed the problem, Thanks for guys this site rocks :)
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Glad to know the problem has been fixed.

Have a nice day.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
VLADSC50
  • MEMBER
Hi KHLOW2008,

I have the same issue and I'm having a hard time understanding wire probes to reset my error. Some also say 'grounding' or 'ground wire which I don't know what type of wire is that. I tried with paperclips and small jumper clips that are negative and positive but no luck. I already understanding the procedure but I think I'm missing the right equipment to do so. Can you provide my links so I have an idea what I need to buy to take this error code off my dashboard?
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Forget about what others say so that you have a clear mind to do this. When you ground a wire, it means connecting the end of the wire to a grounding point, it could be anywhere on bare metal of the vehicle that is connected to the battery negative terminal.

To perform the DTC erasing procedure, get 2 wires and individually plug into each of the terminals described in procedure below. You can use paper clips attached to the wires so that the clips will hold the wires in position in the prescribed terminals

Locate a suitable grounding point and holding one wire in each hand, alternately ground according to the method and timing below.

Check this out.

Clearing Malfunction Code 41

1. Connect wire probes to check connector/TDCL terminals Tc and AB. See Fig. 13. Turn ignition switch to ACC or ON position and wait approximately 6 seconds. Starting with Tc terminal, apply body ground alternately to terminal Tc and terminal AB twice each, in cycles of.5-1.5 seconds.

2. When alternating probes between body ground, simultaneously release one probe from body ground while applying ground to other terminal. If time interval is too long, Code 41 will not clear. After several seconds, when AIR BAG warning light starts to blink a regular cycle, Code 41 cancellation is complete.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
VLADSC50
  • MEMBER
Hi KHLOW2008,

Thank you so much for the response. I knew I was doing something wrong. Because what I was doing was using alligator clips connected on the end of the paperclips while doing the procedure. I had a feeling I should of done it with just the wires instead.

Several more questions if you don't mind. Which grounding wire do I use to attach with the paperclips? I looked online and found out it's copperwire. Is that true or there is other ground wire I can get? Do I also get electrical tape to attach the end of the grounding wire with the paperclips? That way I can reach bare metal for my ground?

Thank you so much.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
You can use any wire. The wire set with clips you have now would be good enough. Clamp one end to a paper clip for plugging into the terminal and touch the other end to a grounding point.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
VLADSC50
  • MEMBER
Do you mean the alligator clips that are negative and positive? All right then I'll try that tomorrow. Now when you say touch the other end to a grounding point do I just simply touch the ground not clamp it? I figured it would be a much faster process if I just touch the ground rather than clamp it since I need to alternate quickly between the two terminals.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KEN
  • ADMIN
Good call, sounds like it will work as well.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
VLADSC50
  • MEMBER
Update. I have successfully cleared the AIRBAG code! I did what you told me and it helped a lot. It took at least many tries to get the speed down which was a quick alternating between the terminals. Many said 0.2 seconds but I didn't think too much about it and just went quickly.

Here is my summary of what I did. I use the ground wire that was thin twisted copper that my father let me borrowed and used the alligator clips to clamp at the end of each wire and placed it in the DLC 1. I then used my ground near the DLC 1 that had three bolts around it and clean it off two bolts but only used one. Now the alternating between grounding the Tc and AB it was done through trial and error. I tried using the ground wire (thin twisted copper) itself, quickly clamping the ground with the alligator clips, different locations of ground, different speeds of alternating with the ground. None have worked, until I relaxed a bit and tried to do it as simple as possible. Which was touching the ground with the alligator clips without clamping since I figured it was mess up my quick timing. Then my father saw the code flash quickly. Once I took off the alligator clip from the ground, which was the Tc, the error code cleared up. I turned on my car twice to see if it stayed on but it didn't.

Thank you so much for your help and I gave my summary if anybody who had the same problem as me so they have an idea what they can do to clear the AIRBAG code. I will add photos in a bit so they have a clear visual what they need and will do.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
VLADSC50
  • MEMBER
Also before I post the pictures. KHLOW2008, I see you posted pictures of the 1992 Toyota Camry LE of Fig.13 and Fig.15 of the AIRBAG procedure to clear the code. I would like to know where can I get the actual book to have as a reference for future issues. Is there website you downloaded the book and what is the book called?

Thank you.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Glad to know you have resolved the problem. Information we have are from Mitchel, an online provider. You can copy the information and save to file. Likewise just save this link and you can always come back.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
VLADSC50
  • MEMBER
Thank you KHLOW2008 just to make sure is this the link to the online provider where you get your information?

http://www.eautorepair.net/marketing/default.asp?VID=&Count=Y

It says Mitchell DIY. I just want to make sure. Again thank you very much.

As for the photos here they are.

The first three photos is my set up. I got a pair of test leads from AutoZone and the ground wire, which is the thin twisted copper, clamp on one end of the ground wire in the nose of the alligator clips

Now the fourth picture is the screws I used for my ground near the DLC 1 box. You'll notice the bottom two are clean which is important to do so to have better ground current. But I only used one to keep it simple. In this case I used the bottom left.

Finally the last picture is how I managed to clear the airbag code after a few trial and error methods. You simply just touch the screw with the alligator clip. I recommend to have a faster timing alternation is to prepare closely to the screw with your alligator clips NOT TOUCHING IT but being near it. This way after the six seconds mark, you have a faster timing alternation between the terminals to the ground since you'll use both of them to clear the code.

I hope this helps for anybody who has the same issue and I apologize for the quality of the pictures.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
KEN
  • ADMIN
This is great! Nice work please add to the site anytime you are on.

Cheers, Ken
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
ANIMALFARM
  • MEMBER
  • 1992 TOYOTA CAMRY
Electrical problem
1992 Toyota Camry 6 cyl Front Wheel Drive Automatic 180K miles

Worked out of town too long, came back battery DEAD. Replaced battery, car now had "parking lights staying on" problem, all switches off, key removed. Soooo... I tried using the Haynes schematics to Isolate a power source to kill juice to the lights until I could spend more time and fix the problem. No Go on pulling fuses, the lights stayed ON when "LOGICAL" steps were followed, didn't want to disconnect btty and glitch computer. So, during this process I pulled ALL fuses one by one like an idiot including AIRBAG system fuse. Ok. Parking light problem is gone and has not returned, but now my AIRBAG LIGHT stays on constantly. I assume that I introduced a "power transient" to the airbag system, causing this. How do I reset the system? The car has never been wrecked, airbag never deployed. Need to get car inspected, don't want to be taken to cleaners by dealer...


http://www.2carpros.com/forum/automotive_pictures/286555_schwarzens_dog_2.jpg

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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
ANIMALFARM
  • MEMBER
Bottom line - I pulled the fuse and then put it back after inspecting it on Airbag circuit with battery connected. Did this cause my AirBag light to now stay on constantly when car on? How can I "reset computer/Fault code" myself? I don't have a hand-held code reader at this point.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
RACEFAN966
  • EXPERT
What I can find it looks like what you need to do is disconnect the neg batt. Cable for about 1 min. By removing the fuse you triggered a power supply difference that is say a power surg. See air bag systems have a 1 min backup power supply so if you are in a crash because it dies the air bag will still work for the first minute. So by doing this with the neg cable you will also drain the backup power and this should reset it. Let me know how it goes.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)
Tiny
JASONRAY
  • MEMBER
The best thing to do is have the computer accessed and determine what code is stored. If the light is ON, there should be a code. It's a '92 model so this may not be as easy as it sounds. You'll probably have to take it somewhere that has a scanner that will access the diagnostics part of the computer. Some independant shops, like the one I work at, have such equipment but some don't. You could call around and ask before you take it anywhere. The code will usually direct you in the right direction as to what's going on and why the light is on. As far as what you've done, I don't see anything in the diagram that should cause the light to stay on simply by pulling the fuse however, these systems can sometimes be very sensitive and that could actually send it for a loop. So my advice is to take it to a shop and have the code read and go from there. I'll be happy to attempt to help you once you get that code.
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Monday, July 29th, 2019 AT 12:55 PM (Merged)

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