flashing check transmission light?

1995 ISUZU TROOPER
139,000 MILES • 6 CYL • 4WD • AUTOMATIC
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C.A. SAVAGE
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while driving or parked with engine running the check transmission light and the airbag light will come on and flash for about 5 min. the trans will downshift ( manual calls it buckle up) after about 5 min.all appears to return to normal. what's wrong? what do i check?
Dec 30, 2007 at 12:03 PM
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CKNAPP
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The simultaneous illumination and flashing of the check transmission light and the airbag light.

along with the transmission downshifting, indicate that there may be an issue with the vehicle's electronic control system
Nov 21, 2008 at 12:01 PM
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CHIEFS30
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i have a 94 isuzu trooper ls that the check transmission light is flashing. the transmission was rebuilt 1 and 1/2 years ago. i have to manually shift it till it gets to around 30 mph then shifts and operates fine. how do i fix this

transmission light is blinking all the time. transmission was rebuilt a year and a half ago.
Dec 4, 2019 at 3:59 PM (Merged)
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RASMATAZ
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Scan the transmission control module for code/s-
Dec 4, 2019 at 3:59 PM (Merged)
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CHIEFS30
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thank you where can i locate the control module to scan for the codes on the vehicle
Dec 4, 2019 at 3:59 PM (Merged)
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RASMATAZ
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TCM Behind left side of dash, above kick panel.
Dec 4, 2019 at 3:59 PM (Merged)
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WILLARD 1
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my tranmission light comes on sometimes and then the car will lug not wanting to go.I turn the key off and on again the car will run fine is this sign of trans going or faulty sensor ?
Dec 4, 2019 at 3:59 PM (Merged)
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MHPAUTOS
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There is a set transmission fault code in the system, get a scan done to read this code and report the code# here for further assistance, start here.

mark (mhpautos)
Dec 4, 2019 at 3:59 PM (Merged)
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FIXMIX666
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bought 3 years ago. In prestine shape with all maintance records. runs perfect, in snow, everywhere.
one problem. every once in awhile when i come to a stop the check transmission light comes on and acceleration is sluggish. Though, get this, if I turn off the ignition, wait 10 seconds, and restart the check transmission light goes off and auto shifting is perfect for weeks and or thousands of miles. Then all of a sudden, only at a stop, it happens again. and so on and so on.
Waz up?
Thank You
Dec 4, 2019 at 4:00 PM (Merged)
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2CARPRO JACK
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It means the computer is seeing a problem witht hetransmission.You can hav it scanned with ascan tool or you can install a jumper wire from terminal 1 to terminal 3 in the data link connector (see pics)


https://www.2carpros.com/forum/automotive_pictures/1639_isuzu1_2.jpg


https://www.2carpros.com/forum/automotive_pictures/1639_isuzu2_1.jpg

Then turn key on, the trans light will flash the codes. It will start by flashing 12 3 times to let you know it is in diagnostic mode.All other codes will follow.The comp will flash each code 3 times, then move onto the next one.
Dec 4, 2019 at 4:00 PM (Merged)