Clearing Trouble Codes

Turn ignition switch to ON position, and ground diagnostic test terminal "B" at ALDL connector. Turn ignition switch to OFF position, and remove control module fuse from fuse block for 30 seconds. Install fuse. Remove diagnostic terminal ground lead. If fuse cannot be located, pigtail at battery can be disconnected. When power to ECM is removed, poor driveability may occur until control module relearns operating parameters.