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Old 12-10-2008, 11:45 AM   #1 (permalink)
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How to reset airbag light

I think I have an airbag light come on. Its a light that looks like someone sitting down with a round ball in their lap in the tachometer. I think it went on after I honked the horn this morning. Could be coincedence. If it comes back on I know I have a problem. How do I reset it? I have way too many miles for warranty service. Thanks
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Old 12-10-2008, 12:07 PM   #2 (permalink)
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i wouldn't mess around with the air bag system, if it's on thqt means there is a problem. i would get it checked out.
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Old 12-10-2008, 02:01 PM   #3 (permalink)
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Without the proper scan tool you can't reset it.
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Old 12-10-2008, 03:47 PM   #4 (permalink)
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Quote:
Originally Posted by WCTacoTech View Post
Without the proper scan tool you can't reset it.
There's the old fashioned way, and it's listed in the factory Toyota repair manual if the scan tool does not remove the light.

Perhaps you've heard of "playing the drums?" You connect a service wire to terminals AB and TC in the 'DIAGNOSTIC' port on the engine harness. You know, the one we used to use for OBDI.

You then alternately ground (just use a strut nut or something) AB and TC in 1 second intervals. The timing needs to be right. It should start blinking at you. Do it until it clears. It's difficult.

We MR2 guys have had to do this to clear our air bag lights for years. Any work done near the dash (like installing a stereo) would set it off. It's still the same for OBDII when the scan tool fails.
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Old 12-10-2008, 04:20 PM   #5 (permalink)
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like 6shooter says. I would not mess with it. Do what you want though.
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Old 12-10-2008, 04:32 PM   #6 (permalink)
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Light went off by itself. Thanks guys.
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Old 12-11-2008, 10:59 AM   #7 (permalink)
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The code is still stored in history and there is still a problem. I would have it checked out. Like others have said its a problem you want checked out, don't ignore it. Also it came on for a reason so to say theres no problem is a lie.
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Old 12-11-2008, 11:15 AM   #8 (permalink)
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You cannot reset an airbag light without fixing the problem. The system is made to report a problem the second it sees a problem. The only way to fix it would be to take it somewhere and have it diagnosed and the part that has gone bad, fixed. If it happened when you honked the horn, then it could be the spiral cable, and the steering angle sensor. or it could be something totally unrelated. Could be anything from a airbag ecu to a yaw rate sensor. simply "clearing the code" wont make it go away unless the problem somehow fixed itself. Which....i have seen happen without explaination. i know this happened with you...but i posting this as general info.
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Old 12-12-2008, 08:54 PM   #9 (permalink)
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Quote:
Originally Posted by integlikewhoa View Post
The code is still stored in history and there is still a problem. I would have it checked out. Like others have said its a problem you want checked out, don't ignore it. Also it came on for a reason so to say theres no problem is a lie.
Read below.

DTC Normal Source Voltage Drop
(no code is output, but the SRS light will stay ON)

CIRCUIT DESCRIPTION
The SRS is equipped with a voltage–increase circuit (DC–DC converter) in the airbag sensor assembly in case the source voltage drops. When the battery voltage drops, the voltage–increase circuit (DC–DC converter) functions to increase the voltage of the SRS to normal voltage. The diagnosis system malfunction display for this circuit is different from other circuits that is when the SRS warning light remains lit up and the DTC is a normal code, source voltage drop is indicated. Malfunction in this circuit is not recorded in the airbag sensor assembly, and when the source voltage returns to normal, the SRS warning light automatically goes off.

There is no other malfunction that would clear itself.
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Old 03-25-2009, 09:34 AM   #10 (permalink)
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Quote:
Originally Posted by 91MR2quickNA View Post
There's the old fashioned way, and it's listed in the factory Toyota repair manual if the scan tool does not remove the light.

Perhaps you've heard of "playing the drums?" You connect a service wire to terminals AB and TC in the 'DIAGNOSTIC' port on the engine harness. You know, the one we used to use for OBDI.
I'm trying to find this port on a 01 highlander V6 4wd. It is not above the rear timing belt cover on the air intake where I've seen it on other Toyotas. Any idea where I could find it?


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Old 03-25-2009, 11:15 AM   #11 (permalink)
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Originally Posted by tr7driver View Post
I'm trying to find this port on a 01 highlander V6 4wd. It is not above the rear timing belt cover on the air intake where I've seen it on other Toyotas. Any idea where I could find it?


Thanks
OBDI ports are always on the lower left under the dash, near the steering column. I never heard of them being in the engine compartment.
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Old 11-23-2011, 03:02 PM   #12 (permalink)
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I'm trying to rest the air bag system for my 2005 Corolla. You mentioned "connect a service wire to terminals AB and TC in the 'DIAGNOSTIC' port on the engine harness. You know, the one we used to use for OBDI." I'm trying to locate this port under the hood without success. Can you point me in the right direction. Thanks.
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