Thread: Master warning light
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Old 04-06-2013, 02:20 PM   #3
pwpanas
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Quote:
Originally Posted by supra1993 View Post
Hi guys,
i have 1993 JZA80 supra and the master warning light turns on sometimes and ill have to either disconnect the battery or the EFI fuse.
i have tried doing the DIAGNOSTIC TROUBLE CODE CHECK but no codes were shown.
i have topped the break and engine oil.
but still comes up
any ideas what does that means ?
Is your Mkiv Supra a TT?

If you don't mind me asking, are you sure you did the diagnostic check correctly? Ime, every time I've seen the red triangle with the exclamation mark, I've been able to read a code..

Codes come up for a large variety of reasons. Anything from a vacuum leak to a bad sensor could be causing it. We really need the code to do the troubleshooting...
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NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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