Flashing check transmission light?

Tiny
C.A. SAVAGE
  • MEMBER
  • 1995 ISUZU TROOPER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 139,000 MILES
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?
Sunday, December 30th, 2007 AT 12:03 PM

9 Replies

Tiny
CKNAPP
  • MEMBER
  • 3 POSTS
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
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Friday, November 21st, 2008 AT 12:01 PM
Tiny
CHIEFS30
  • MEMBER
  • 2 POSTS
  • 1994 ISUZU TROOPER
  • 150,000 MILES
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.
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Wednesday, December 4th, 2019 AT 3:59 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Scan the transmission control module for code/s-
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Wednesday, December 4th, 2019 AT 3:59 PM (Merged)
Tiny
CHIEFS30
  • MEMBER
  • 2 POSTS
Thank you where can I locate the control module to scan for the codes on the vehicle
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Wednesday, December 4th, 2019 AT 3:59 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
TCM Behind left side of dash, above kick panel.
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Wednesday, December 4th, 2019 AT 3:59 PM (Merged)
Tiny
WILLARD 1
  • MEMBER
  • 1 POST
  • 1993 ISUZU TROOPER
  • 6 CYL
  • 4WD
  • AUTOMATIC
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?
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Wednesday, December 4th, 2019 AT 3:59 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
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)
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Wednesday, December 4th, 2019 AT 3:59 PM (Merged)
Tiny
FIXMIX666
  • MEMBER
  • 1 POST
  • 1993 ISUZU TROOPER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 143,000 MILES
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
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Wednesday, December 4th, 2019 AT 4:00 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
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.
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Wednesday, December 4th, 2019 AT 4:00 PM (Merged)

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