Clearing Diagnostic Trouble Codes

CAUTION: To avoid component damage, be sure ignition is "OFF" when disconnecting or reconnecting power to the Engine Control Module ECM.

Main Fuse And ECM Harness Connections:

The Diagnostic Trouble Code (DTC) memory receives a continuous 12 volts even with the ignition "OFF." After displaying and recording any DTCs or after making repairs, the ECM memory should be cleared by interrupting the power for at least 10 seconds. This is accomplished by temporarily removing the #3 fuse (instrument panel fuse box) or the main fuse (60 A in engine compartment fuse and relay block) or by disconnecting the battery. DTCs are cleared automatically whenever the 14 pin ECM harness is disconnected. After clearing DTCs, it may be necessary to reset electronic accessories such as digital clocks and radios.