Airbag Dash Light 2002 Tundra

[Arnold]

I have 2002 Tundra Limited V-8. Has 158k on it still runs great. However, the Airbag light on the dash came on about 2 months ago. I have a scanner but I am not getting codes! I am guessing that either the airbag system is not connected system or have just have a bad light. The seat belt light goes off when connect the seat belt.

Do you have any suggestions with this issue?

Thanks

Arnold

Topic

[Bill]

Not sure if yours does but you need a scanner that will access the body computer.

[Arnold]

Evidently it does not. Does the body computer had a different port? Do I use the same port under the dash but I need a more able scanner or a different scanner?

Thanks

Arnold

[Bill]

The body computer uses the same port but it usually takes a higher end scanner to access the body, chassis, hvac, abs etc. computers.

[Aaron Abajian]

Hi Arnold. Most basic scanners will not get into most airbag systems. The problem could be as simple as a shorted wire under your seat leading to the weight sensor or seatbelt. Please find someone that can scan this for you. When that light is on, your airbag system will not function. A very common cause for an airbag light is your clockspring in your steering wheel. If you can’t honk the horn or work any of the accessories on you steering wheel, this is probably your problem. But please have this looked at right away. God forbid you get in an accident and your SRS system doesn’t function. In fact, if you are anywhere near Chicago, I will scan and diagnose it for free! Good luck, Aaron

[Arnold]

Aaron thank you so much. All the accessories on the steering wheel are functioning fine. Now I know where to look. It also appears that if I want to keep this vehicle going I will need a better scanner.

Thanks so much.

Arnold

[Its me]

You can pull the codes yourself…

Turn on ignition Key On, Engine off and wait 20 seconds then jump the two pins in the picture and watch the air bag light. It will blink the trouble code with a 2 digit number. Fast flashes indicate first digit, brief pause and fast flashes will indicate second digit. A 2.5 second pause will separate codes, when all codes have been displayed a 4 second pause then it will repeat all the codes.
The connector is your regular data link connector.

For example: a flash flash flash flash flash PAUSE flash PAUSE would be a code 51 – Short To Ground or Earth In P Airbag or explosive module Circuit

See flash code definitions below:

Here are what the codes mean…

1998-2002

Code DEFINITION

scanned Flash

B0100 13 Short In D Airbag or explosive module Circuit
B0101 14 Open In D Airbag or explosive module Circuit
B0102 11 Short To Ground or Earth In D Airbag or explosive module Circuit
B0103 12 Short To Battery Power (12 volts) In D Airbag or explosive module Circuit
B0105 53 Short In P Airbag or explosive module Circuit
B0106 54 Open In P Airbag or explosive module Circuit
B0107 51 Short To Ground or Earth In P Airbag or explosive module Circuit
B0108 52 Short To Battery Power (12 volts) In P Airbag or explosive module Circuit
B0110 43 Short In Side Airbag or explosive module RH Circuit
B0111 44 Open In Side Airbag or explosive module RH Circuit
B0112 41 Short To Ground or Earth In Side Airbag or explosive module RH Circuit
B0113 42 Short To Battery Power (12 volts) In Side Airbag or explosive module RH Circuit
B0115 47 Short In Side Airbag or explosive module LH Circuit
B0116 48 Open In Side Airbag or explosive module LH Circuit
B0117 45 Short To Ground or Earth In Side Airbag or explosive module LH Circuit
B0118 46 Short To Battery Power (12 volts) In Side Airbag or explosive module LH Circuit
B0127 27 LH Seat Belt Buckle Switch Malfunction
B0130 63 Short In P/T Airbag or explosive module RH Circuit
B0131 64 Open P/T Airbag or explosive module RH Circuit
B0132 61 Short To Ground or Earth In PIT Airbag or explosive module RH Circuit
B0133 62 Short To Battery Power (12 volts) In PIT Airbag or explosive module RH Circuit
B0135 73 Short In P/T Airbag or explosive module LH Circuit
B0136 74 Open P/T Airbag or explosive module LH Circuit
B0137 71 Short To Ground or Earth In P/T Airbag or explosive module LH Circuit
B0138 72 Short To Battery Power (12 volts) In P/T Airbag or explosive module LH Circuit
B1100 31 Air Bag Sensor Assembly Malfunction
B1135 24 Half Connection Detection Malfunction
B1140 32 RH Side Impact Air Bag Sensor Assembly Malfunction
B1141 33 LH Side Impact Air Bag Assembly Malfunction
B1142 34 Door Side Impact Air Bag Sensor RH Malfunction
B1143 34 Door Side Impact Air Bag Sensor RH Malfunction
B1144 35 Door Side Impact Air Bag Sensor LH Malfunction
B1145 35 Door Side Impact Air Bag Sensor LH Malfunction
B1148 36 Front Air Bag Sensor RH Malfunction
B1149 37 Front Air Bag Sensor LH Malfunction
B1153 25 Seat Position Sensor Assemble Malfunction
B1154 38 Air Bag Sensor Rear RH Malfunction
B1155 39 Air Bag Sensor Rear LH Malfunction
B1156 15 Front RH Air Bag Sensor Malfunction
B1157 15 Front RH Air Bag Sensor Malfunction
B1158 16 Front LH Air Bag Sensor Malfunction
B1159 16 Front LH Air Bag Sensor Malfunction
B1160 83 Short In Curtain Shield Air Bag RH Airbag or explosive module Circuit
B1161 84 Open In Curtain Shield Air Bag RH Airbag or explosive module Circuit
B1162 81 Short In Curtain Shield Air Bag RH Circuit To Ground or Earth
B1163 82 Short In Curtain Shield Air Bag RH Circuit To Battery Power (12 volts)
B1165 87 Short In Curtain Shield Air Bag LH Airbag or explosive module Circuit
B1166 88 Open In Curtain Shield Air Bag LH Airbag or explosive module Circuit
B1167 85 Short In Curtain Shield Air Bag LH Circuit To Ground or Earth
B1168 86 Short In Curtain Shield Air Bag LH Circuit To Battery Power (12 volts)
B1180 17 Short In D Airbag or explosive module 2nd Step Circuit
B1181 18 Open In D Airbag or explosive module 2nd Step Circuit
B1182 19 Short In D Airbag or explosive module 2nd Step Circuit To Ground or Earth
B1183 22 Short In D Airbag or explosive module 2nd Step Circuit To Battery Power (12 volts)
B1185 57 Short In P Airbag or explosive module 2nd Step Circuit
B1186 58 Open In P Airbag or explosive module 2nd Step Circuit
B1187 55 Short In P Airbag or explosive module 2nd Step Circuit To Ground or Earth
B1188 56 Short In P Airbag or explosive module 2nd Step Circuit To Battery Power (12 volts)

[Bill]

Geeze T.K, I learned something. I guess we get spoiled with scan tools these days.

[Aaron Abajian]

Wow! I had no idea that you can do this. Great info… makes we wonder why the hell did I shell out 5k on my scan tool! Thanks, Aaron

[Arnold]

Mr. Karl thank you so much for that quick short cut by jumping the ports. However, based on your directions I received 5 different codes. After reading the definitions it appears I have a host of airbag problems which seems a little odd. When it cycled the codes I received.
31
11
51
71
61
and then it would repeat those codes in the same sequence. At the same time the ABS and Cruise control lights where flashing as well. I have malfunctioning Sensors and Shorts on both sides. Seems odd that I would have the same issues on both sides at the same time. Anyway if you have more thoughts on my issue they would greatly appreciated.

thanks
Arnold

[valde]

Maybe this could be power delivery issue? Check airbag related fuses and make sure they have good contact.

[Its me]

I agree to check out the above…

To really trace it out you will need an electrical schematic and see where all those circuits come together where you could get an error like this.

You can get access to ALLDATA for one vehicle for around $17 or so and get all this info online if you are so inclined… Be aware, safety must be taken into consideration when tracking down Airbag issues..

Anyway… My guess would be the Airbag Control Module is bad…

-Karl

[Arnold]

Yeah I am beginning to come to that conclusion as well. I am way to rusty with wrenching to start playing with airbag issues. I would hate to launch one by accident. Is there an after market for the module or is it a dealer (bend over) part?

Thanks Karl

Arnold

[Its me]

You might be able to get one from a scrapyard or on Ebay…

-Karl

[EricTheCarGuy]

I’ve seen low system voltage cause issues like this. Computers speak in the language of voltage. If system voltage is low, computers become incoherent and start setting all kinds of codes. I recommend you check the battery to make sure it’s in good working order. I’d also recommend you check the connections because they can also cause issues like this. Clean them if they’re dirty, and make sure they’re secure. Once you know you have a working electrical system, clear the codes and see if they come back.

http://www.ericthecarguy.com/faq/solving-automotive-electrical-problems

Keep us posted.

[Arnold]

Thanks, Battery connections are clean and green. I have another Toyota tech honing on code 31. That tells him that it is the main airbag sensor under the radio on the floor in the console. It is a dealer part unless you can find one in a junk yard which I don’t I would take a chance on it is a $511 part. Don’t want an airbag going off prematurely or by accident when I swap out the main Airbag sensor assembly. I am afraid as much as I despise the dealer I am going to have to bit the bullet. It is pcs of Safety equipment.
I do like your site and glad I signed up.
Thanks
Arnold

[Author]

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