Precautions For Removing Battery Terminal: Notes

When removing the 12V battery terminal, turn OFF the ignition switch and wait at least 5 minutes.

Fig 1: Disconnecting Negative Battery Terminal
Courtesy of NISSAN NORTH AMERICA, INC.

NOTE:
ECU may be active for several minutes after the ignition switch is turned OFF. If the battery terminal is removed before ECU stops, then a DTC detection error or ECU data corruption may occur.
Disconnect 12V battery terminal according to the following steps.