DTC    P0A1D-721    Hybrid Powertrain Control Module

DTC    P0A1D-722    Hybrid Powertrain Control Module

DTC    P0A1D-723    Hybrid Powertrain Control Module

DTC    P0A1D-724    Hybrid Powertrain Control Module

DTC    P0A1D-787    Hybrid Powertrain Control Module

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DESCRIPTION

The HV control ECU monitors internal operations and detects a malfunction.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0A1D
721
ECU internal error
HV control ECU
↑
722
ECU internal error
HV control ECU
↑
723
ECU internal error
HV control ECU
↑
724
ECU internal error
HV control ECU
↑
787
ECU internal error
HV control ECU

MONITOR DESCRIPTION

The HV control ECU performs many diagnostic tests to verify proper operation of internal ECU systems. In one of these diagnostics, the HV control ECU checks the result of the engine CPU self-test. If the HV control ECU detects a "Fail" from the engine CPU self-test, it will conclude that there is an internal malfunction in the engine CPU. The HV control ECU will illuminate the MIL and set a DTC.

INSPECTION PROCEDURE

1.REPLACE HYBRID VEHICLE CONTROL ECU

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