Hybrid Battery System

DTC P0A1F-123 Battery Energy Control Module

DESCRIPTION

DTC Detection Condition:

The hybrid vehicle control ECU alerts the driver and performs fail safe control based on error signals sent from the battery smart unit.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

If the battery smart unit detects an internal malfunction in the unit itself, the HV control ECU will illuminate the MIL and set a DTC.

Wiring Diagram:

Step 1:

Step 1(Continued)-3:

Step 4:

INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.

HINT:
- Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
- After completing repairs, restart the system (turn the power switch on (READY)) and recheck for DTCs.