P1600

DTC P1600 ECM BATT Malfunction

CIRCUIT DESCRIPTION
Battery 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.





DIAGNOSTIC TROUBLE CODE DETECTING CONDITION AND TROUBLE AREA

HINT: If DTC P1600 appears, the ECM does not store another diagnostic trouble code.





WIRING DIAGRAM








INSPECTION PROCEDURE