Clearing Diagnostic Trouble Codes

CAUTION To prevent control module damage, the key must always be in the "OFF" position when disconnecting or reconnecting control module power.

OPERATION
To clear the Diagnostic Trouble Codes (DTC's) from the memory of the control module, either to determine if the malfunction will occur again or because a repair has been completed, the control module power feed must be disconnected for at least 30 seconds. Depending on how the vehicle is equipped, the control module power feed can be disconnected at the positive battery terminal fuse in the fuse block. (The negative battery terminal may be disconnected, but other on board memory data, such as preset radio tuning, will also be lost.)

A scan tool, in some applications, can may be used to clear Diagnostic Trouble Codes.