Emission Control Systems: Service and Repair

Engine Control Module Location:

1. Turn the ignition key on.
2. Turn the diagnostic mode selector on the ECM fully clockwise and wait more than two seconds then turn the selector fully counterclockwise. The ECCS system is now in mode 2.
3. Turn the diagnostic mode selector on the ECM fully clockwise and wait more than two seconds then turn the selector fully counterclockwise. The ECCS system is now in mode 1.
ECM memory is now erased.