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Old 02-06-2012, 02:53 PM   #1
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Engine control computer/ module

Have a code 511 on my 94 mustang gt read only, i was told that this refers to the ecc/ecm i have located it in the pass kick panel. It seems to be kicking my a** getting it out any tricks. It seems to move around but will not slide out. Is there any plugs at the top end.
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Old 02-06-2012, 03:29 PM   #2
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Re: Engine control computer/ module

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Originally Posted by Matt5.0 View Post
Have a code 511 on my 94 mustang gt read only, i was told that this refers to the ecc/ecm i have located it in the pass kick panel. It seems to be kicking my a** getting it out any tricks. It seems to move around but will not slide out. Is there any plugs at the top end.


I never removed one from a 94-95, but I found this that may help.


Quote:
To get in there you just need to pull up the door sill then remove the one body bolt on the kick panel and then pull back on the kcik panel to get it out. There are some wires attached to a bracket which will need to be minimally moved out of the way and then you will need a 7mm (or maybe smaller) screw drive or 1/4" setup to remove the bolts that hold in the ECU cage + I think an 8mm to unscrew the harness. There is really not too much to it.
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Old 02-06-2012, 04:29 PM   #3
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Ok thanks i got it out but here is another question i got a 511 code read only memory. Is this saying i fried my ecc/ecm?
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Old 02-06-2012, 05:34 PM   #4
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Re: Engine control computer/ module

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Ok thanks i got it out but here is another question i got a 511 code read only memory. Is this saying i fried my ecc/ecm?
I looked up the 94-95 511 code. Here is what I found.


511 - No power to PCM pin 1 or bad PCM (processor)
Power for the PCM comes through a relay in the CCRM.


So you could have a blown fuse, bad relay in the CCRM or the PCM/ECM is fried.

Before doing anything else, check the 20 amp EEC fuse in engine compartment, it feeds power through CCRM relay.
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Old 02-06-2012, 09:06 PM   #5
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That fuse is a cartridge type fusible link, i have not used/ replayed before how can you tell if it is bad. A small fuse brakes in the mid what are signs of a bad cartridge type fusible link?
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Old 02-06-2012, 11:05 PM   #6
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Re: Engine control computer/ module

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That fuse is a cartridge type fusible link, i have not used/ replayed before how can you tell if it is bad. A small fuse brakes in the mid what are signs of a bad cartridge type fusible link?
Use an ohmmeter and test the fuse.
An ohmmeter (Usually an included function on most electrical testers.) can only be used on a de-energized/removed component. It sends a small amount of current through the component to test resistance. On a fuse, if you can read current through them they are usually good.
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Old 02-06-2012, 11:25 PM   #7
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Ok thats what i was thinking but did no know if there was a visual way thanks all.
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Old 02-06-2012, 11:30 PM   #8
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A Haynes or Chilton manual should also have the procedure.
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