HOW TO CLEAR EEC-IV CONTINUOUS MEMORY CODES

Clearing the codes from truck memory can be done by several methods.  Sometimes in removing the codes they seem to be stubborn or just refuse to clear. The following methods has worked for me in getting rid of continuous memory codes, one should work for you.

METHOD #1
1. Run the Key On Engine Off Self Test using what ever method.
2. When the Service Codes begin to be displayed, deactivate Self-Test (work quickly) and disconnect the jumper wire from the Self-Test  connector.
3. The continuous service codes will be erased from the processor's memory.

METHOD #2
1. Disconnect the car battery for at least 5 minutes.  Reconnect.  The computer codes should be gone.  NOTE: The computer will need to "relearn" the engine.  You should drive the vehicle as you would normally for at least 10 minutes. The on-board computer will then memorize the engine dynamics.

METHOD #3
1. Pull the fuse to the computer module. Most vehicles have an ECM fuse. Sometimes under another label. Remove fuse, wait 5 minutes, then reinsert. The trouble code should be removed.




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