Hybrid Vehicle Control System

DTC P0A1F-129 Battery Energy Control Module

DESCRIPTION

DTC Detection Condition:

The battery smart unit sends HV battery voltage information to the HV control ECU via serial communication.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

The HV control ECU calculates the differences between the received HV battery voltage, boost converter voltage, and inverter voltage. If any of the differences exceed prescribed values, the HV control ECU determines that there is a malfunction in the battery voltage circuit. When the HV control ECU detects a malfunction, it illuminates the MIL and sets a DTC.

Step 1:

INSPECTION PROCEDURE

NOTE: Performing the check procedures for a long time with the shift lever in the N position may cause DTC P3000-388 to be output.

HINT: To determine the normal conditions, put the vehicle into the READY-on state, move the shift lever to the N position, and check HV battery voltage (VB), pre-boost voltage (VL), and post-boost voltage (VH) in the DATA LIST after replacement of the battery smart unit.