Back Up Power Source Circuit
CIRCUIT DESCRIPTION
Battery positive voltage is supplied to terminal BATT of the ECM even when the ignition switch is off for use by the diagnostic trouble code memory and air–fuel ratio adaptive control value memory, etc.
WIRING DIAGRAM
Engine Control Module
R/B No.2
2A 2
EFI No.1
B-Y 4
EA1
B-Y 33
E10 BATT
B
Battery
FI6878