Memory Erase
WARNING: This page is about a different car, the 1989 Nissan Pickup and 1989 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Stored memory will be erased if battery is disconnected or Mode 4 is selected after Mode 3 has been accessed. However, if mode selector switch is turned fully clockwise (on-off switch turned to "ON" position for Pathfinder & Pickup), diagnostic modes will continue to cycle, from Mode 1 to 5, and will keep cycling in the same order, until a certain mode is selected. This does not erase the stored memory.