92 Ranger Keep alive memory code 512.

congaman · 05-23-2009, 06:42 PM

Run Diag on my Ranger and come up with a 512 code no idea what that is and this is the kicker code 10 thing??? runs rough at idle engine light comes on eventually stays on.
Changed the ign wires and dist cap rotor.
Diag shows a code 111 no problem code
Thing is there is no code memory in the comp does anyone know if there is a back up batterie ni the computer and what the code 10 means

*Sams01XplrSprt* · 05-23-2009, 07:03 PM

welcome conga

**BrooklynBay** · 05-23-2009, 11:31 PM

Welcome to this forum! I've moved your thread to the EEC-IV section. According to my sticky thread on the top of this section: http://www.explorerforum.com/forums/...d.php?t=160035, it says: 512
(M)
Memory power (PCM pin 1) was interrupted - Was the battery disconnected? 512
Keep Alive Memory Test Failure.
C
The code 10 could be a separator code: SEPARATOR PULSE.
The separator pulse is a single pulse that indicates the END of hard fault codes and the BEGINNING of memory codes.
It will show up as a code 10 on most digital testers.

congaman · 05-24-2009, 05:38 AM

Quote:

Originally Posted by BrooklynBay

Welcome to this forum! I've moved your thread to the EEC-IV section. According to my sticky thread on the top of this section: http://www.explorerforum.com/forums/...d.php?t=160035, it says: 512
(M)
Memory power (PCM pin 1) was interrupted - Was the battery disconnected? 512
Keep Alive Memory Test Failure.
C
The code 10 could be a separator code: SEPARATOR PULSE.
The separator pulse is a single pulse that indicates the END of hard fault codes and the BEGINNING of memory codes.
It will show up as a code 10 on most digital testers.

Battery was disconnected for 10 seconds only.

congaman · 05-24-2009, 05:48 AM

Battery was disconnected for 10 seconds only.
After i got the truck back from the shop the teck told me he had pulled up no codes and suspected the box oxs anyways i went and got me one of those code readers and also got no codes till i replace a blown fuse 15 amp under the hood witch had something to do with the computer, then the codes came up.

**BrooklynBay** · 05-24-2009, 09:49 AM

I would suggest that you clear the codes since the fuse was replaced, then see if they come back again.

congaman · 06-09-2009, 08:51 PM

Had truck in the shop the rough idle problem i had didnt show up code.
They ended up replacing the MAF and the thing runs like a top well almost it is 98% better.
The engine lite still comes on because of code 512 KAM but i was told there may be a bad live all the time wire "YELLOW" that runs to the computer witch keeps the mem alive.
Solution is to find the KEM wire running into the computer itself and run it directly to the fuse box on the positive live side and the lite should stay off.

05-23-2009, 06:42 PM	#1
congaman Wannabe Elite Explorer sault ste marie On 1992 Join Date: May 2009 Posts: 6 Vehicle Specs (Original Poster)	92 Ranger Keep alive memory code 512. Run Diag on my Ranger and come up with a 512 code no idea what that is and this is the kicker code 10 thing??? runs rough at idle engine light comes on eventually stays on. Changed the ign wires and dist cap rotor. Diag shows a code 111 no problem code Thing is there is no code memory in the comp does anyone know if there is a back up batterie ni the computer and what the code 10 means

05-23-2009, 07:03 PM	#2
Sams01XplrSprt Southern Cali Explorer Newport Beach California & Bay Area California 2001 Sport (sold) Join Date: Nov 2004 Posts: 15,633 Vehicle Specs	welcome conga __________________ 2001 Ford Explorer Sport 4.0 sohc engine. Mods include: dual 40 series flowmasters & high flow k&n air filter & removed silencer & yellow fog lights (sold for $1,800) as of 2-26-12

05-23-2009, 11:31 PM	#3
BrooklynBay Aerostar Forum Moderator Brooklyn, NY 88 89 93 95 96 Aerostars Join Date: Nov 2005 Posts: 45,681 Vehicle Specs	Welcome to this forum! I've moved your thread to the EEC-IV section. According to my sticky thread on the top of this section: http://www.explorerforum.com/forums/...d.php?t=160035, it says: 512 (M) Memory power (PCM pin 1) was interrupted - Was the battery disconnected? 512 Keep Alive Memory Test Failure. C The code 10 could be a separator code: SEPARATOR PULSE. The separator pulse is a single pulse that indicates the END of hard fault codes and the BEGINNING of memory codes. It will show up as a code 10 on most digital testers. __________________ My list of useful threads. My photo gallery. My product reviews. My list of items for sale. Aerostar owners thread. Aerostar parts work in Explorers, Rangers, and Bronco II thread. History of the Aerostar thread. Aerostar Forum. New Members Forum. Ford/Lincoln/Mercury Forum.

05-24-2009, 09:49 AM	#6
BrooklynBay Aerostar Forum Moderator Brooklyn, NY 88 89 93 95 96 Aerostars Join Date: Nov 2005 Posts: 45,681 Vehicle Specs	I would suggest that you clear the codes since the fuse was replaced, then see if they come back again. __________________ My list of useful threads. My photo gallery. My product reviews. My list of items for sale. Aerostar owners thread. Aerostar parts work in Explorers, Rangers, and Bronco II thread. History of the Aerostar thread. Aerostar Forum. New Members Forum. Ford/Lincoln/Mercury Forum.

06-09-2009, 08:51 PM	#7
congaman Wannabe Elite Explorer sault ste marie On 1992 Join Date: May 2009 Posts: 6 Vehicle Specs (Original Poster)	512 Code Had truck in the shop the rough idle problem i had didnt show up code. They ended up replacing the MAF and the thing runs like a top well almost it is 98% better. The engine lite still comes on because of code 512 KAM but i was told there may be a bad live all the time wire "YELLOW" that runs to the computer witch keeps the mem alive. Solution is to find the KEM wire running into the computer itself and run it directly to the fuse box on the positive live side and the lite should stay off.

05-24-2009, 05:48 AM	#5
congaman Wannabe Elite Explorer sault ste marie On 1992 Join Date: May 2009 Posts: 6 Vehicle Specs (Original Poster)	Battery was disconnected for 10 seconds only. After i got the truck back from the shop the teck told me he had pulled up no codes and suspected the box oxs anyways i went and got me one of those code readers and also got no codes till i replace a blown fuse 15 amp under the hood witch had something to do with the computer, then the codes came up.