Memory Erase

CAUTION: Be sure all needed diagnostic codes are extracted from the ECU memory before disconnecting battery or switching from Mode 3 into Mode 4.

NOTE: If ignition switch is turned to "OFF" position in any mode of diagnosis, then turned to "ON" position after ECU has completely lost power, the diagnosis mode will automatically return to Mode 1 and begin cycling through modes again, but memory will not be erased.

Stored memory will be erased if battery is disconnected or Mode 4 is selected after Mode 3. Only if mode select switch is turned counterclockwise after Mode 3 and then after Mode 4 is selected, will stored memory be erased. However, if mode selector switch is turned fully clockwise diagnosis modes will continue to change in order until a certain mode is selected, this does not erase the stored memory.