P1600

DTC P1600 - ECM BATT Malfunction

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.


DETECTING CONDITION



NOTE: If DTC P1600 appears, the ECM is not able to store any other diagnostic codes.

WIRING DIAGRAM

ECM Memory Functions Power Supply Circuit:

INSPECTION PROCEDURE