error code 564 on 93 atx

[[email protected]]

can anyone tell me the most likely cause and repair for error code 564 ..from previous posts i see it is fan circut failure . with my code reader the fan works on both high and low thanks in advance

 

[luigisho]

Did you notice any operating problems before you checked this code? OBD I code readers are not great to get proper readings vs the regular CEL flashes. If the car runs fine, I would clear the codes, run it and see if anything comes back.

 

[[email protected]]

actually i have 2 93 atx both with the same issue. the light is intermittent and both cars run fine otherwise .how do i go about cleaeing the code ..thanks very much for the reply

 

[luigisho]

The easiest way is to disconnect the battery for a few minutes to drain the system of power and any residual in the system. When you start it up again it may run a little funny as the adaptive computer relearns idle and such. I find it hard to believe that both cars would issue the exact same code. I think the code reader is suspect if this is the case and you need to jumper the pins and read the codes from the dash. You will see in a few recent posts that some of us have posted similar issues with OBD I code readers on these vehicles. --they stink

Here's a link on how to pull codes from the car and a list of 2 & 3 digit codes

http://web.archive.org/web/20090917070939/http://www.shophoenixproject.com/eec/eec.htm

 

[[email protected]]

thanks so much for the help will try this process tomm .

 

[rubydist]

the easiest way to clear the codes is to pull the jumper while the codes are being flashed out - that is the most consistent and quickest way to reset them.

 

[[email protected]]

thanks fred i will try that today

 

[[email protected]]

ok.. so i tried both methods of clearing the code. worked briefly then cel came on again .pulled codes as per phoenix project and still showing code 564 . what would be the most common cause for this . btw i have a 94 trans and d4ui installed if that makes a difference ..thanks again pat

 

[luigisho]

My first guess is bad ground or a bad circuit in the ccrm or a fault in the fan circuitry... never had this code but have had all 3 problems over the years

 

[rubydist]

that should be telling you that the low speed fan does not work or not work right - since it is complaining of a circuit failure, it could just be that the ccrm draws too much or too little current on the signal side, so the pcm thinks that the circuit is bad. I would start with replacing the ccrm.

edit: that 564 code is not supposed to light the CEL - are there no other codes?

 

[[email protected]]

no other codes . same with both cars .needless to say i love not using the obd 1 tester .much easier and cost efficient with the paper clip .thanks again very much

 

[ctubutis]

My guess is the CCRM; here is how Ford says to diagnose it (from their powertrain diagnostics manual, assuming I can get this forum software to work for me):

 

[rubydist]

thanks, Chris.

 

[ctubutis]

thanks, Chris.

Welcome, Fred.

OP - You may want the pinouts, here they are; the CIRCUIT column contains the individual circuit numbers as well as the wire colors (black/orange, tan/red, brown/lightgreen, whatever) which should help in identifying wires & pins:

 

[[email protected]]

Update ..cleaned contacts on ccrm changed both o2 sensors and cleared codes ..no more codes car is running fine ..I do believe o2 sensors were the problem ..thanks to all for the help