Hybrid Vehicle Control System

DTC P1600 BATT MALFUNCTION

CIRCUIT DESCRIPTION
Since the ECU back-up power source is used for DTC and freeze frame data memory, the back-up power source (BATT) continues to be supplied to the HV ECU even though the ignition switch is turned OFF.

Detecting Condition:

DTC P1600 - Information code 117

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE