retrieving codes?
 

I have a 90 2200 pu, check engine light is on and have been told to get codes by counting flashes of said light, how do i get this to happen? I have a hayes manual but I can find no reference to this subject. pls advise, thanks

RE: retrieving codes?
 

I know what your talking about, I was shown how to do it but I am still a little fuzzy on the details all I do know is that you get some kind of wire or conectors that can be conect on that little turmale under your stearing wheel I think. Um had to say because I was shown so long ago. I know how to do it on my 323 but I am not sure on that on. I'll look it up and see if I can find some more info for yah.


I think I know how to do it I just need to tell you where to do this at.


I'll get back to you on it.

RE: retrieving codes?
 

Under the hood at the passenger rear corner you want to find a Green colored one pin connector. Short this wire to ground and turn the key to 'RUN' position. The MIL should start flashing a one or two digit code. A code 09 would be 9 short flashes followed by a 4 sec pause and then will repeat. If a two digit code then the first series of long flashes will be the first digit and second set of short flashes would be the second digit (ie 3 long flashes followed by 4 short would be a code 34 ). How many miles are on your truck? There is also a maintenance reminder that turns on the MIL every 60k and 80k miles. You will not be able to output any codes if reminder switch has been tripped.

RE: retrieving codes?
 

Thanks for the tech. help guys! There are approx. 100k miles on truck, also , it is a 91 not a 90. THX. again

RE: retrieving codes?
 

90 and 91 would be same place for check connector and same codes as well.