HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A1D-721, P0A1D-722, P0A1D-723, P0A1D-787, P0A1D-818

DTC Code DTC Name
P0A1D-721 Hybrid Powertrain Control Module
P0A1D-722 Hybrid Powertrain Control Module
P0A1D-723 Hybrid Powertrain Control Module
P0A1D-787 Hybrid Powertrain Control Module
P0A1D-818 Hybrid Powertrain Control Module

DESCRIPTION

The power management control ECU monitors its internal operation, it will set DTCs and perform fail-safe control when it detects the following malfunctions. If any of the following DTCs are output, replace the power management control ECU.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A1D 721 ECU internal error Power management control ECU
722
723
787
818

MONITOR DESCRIPTION

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

MONITOR STRATEGY

Related DTCs P0A1D (INF 721/722/723/787/818): Monitor CPU malfunction
Required sensors / components Power management control ECU
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation Immediately
Sequence of operation None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present TMC's intellectual property
Other conditions belong to TMC's intellectual property -

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property -

COMPONENT OPERATING RANGE

Power management control ECU DTC P0A1D (INF 721/722/723/787/818) is not detected

CONFIRMATION DRIVING PATTERN

A011XPYE01

  1. Connect the Techstream to the DLC3.

  2. Turn the power switch on (IG) and turn the Techstream on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off.

  5. Turn the power switch on (READY) and after a few seconds, turn the power switch off. [A]

  6. Repeat [A] 3 times. [B]

  7. Turn the power switch on (IG) and turn the Techstream on.

  8. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [C]

  9. Check that permanent DTCs are cleared.

  10. If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.

Tech Tips

  • If a permanent DTC is output, the system is malfunctioning.

  • If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

PROCEDURE

  1. REPLACE POWER MANAGEMENT CONTROL ECU

    Click here

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