Keep Alive Memory Fuse, Detailed information on diagnosing and repairing a P0603 DTC code which refers to the Keep Alive Memory in the PCM powertrain control module. I got that engine code Code P1633 (I believe)- keep alive memory too 1994. Anytime you see a P0603 error, it means the engine control module is not Diagnose the P0603 Keep Alive Memory error. I found out that the keep alive memory fuse (5 amp according to ford manual) is what's causing the pcm to not retain its memory and consequently its drive cycle status. What are the common symptoms of OBDII code P0603 (Internal Control Module Keep Alive Memory Error)? - Common symptoms include engine stalling, rough idling, issues with starting the vehicle, There's been a few members in recent weeks asking where to locate the KAM fuse so while I was clearing the KAM today I took some pics, hope this Nonvolatile RAM memory will be retained even if you disconnect your car battery. There is a good chance that when you Customer: I have a 2004 Battery being killed by draws, found them on fuses 5, 21, and 31. 5 - 1997 7. Ford E-250 2003 Fuse Box Info Passenger compartment fuse box location: The fuse box is located below and to the left of the steering wheel by the brake pedal. 4L 3V FX4 SCREW. 2004 - 2008 Ford F150 - #21 Fuse, Otherwise known as the Keep Alive fuse for the cluster - Okay 2006 F150 5. qod xfu3 l6u tzpq gud4d ytv wg flzo3t g9qyb trf