HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A1D-187

DTC Code DTC Name
P0A1D-187 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 187

ECU internal malfunction

(1 trip detection logic)

 Power management control ECU

MONITOR DESCRIPTION

The power management control ECU performs diagnostic tests to verify proper operation of internal and external ECU systems. In one of these tests, the power management control ECU monitors specific RAM circuits of the power management control ECU. If the power management control ECU detects an error in the RAM circuits, it will conclude that there is an internal malfunction in the power management control ECU. The power management control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY

Related DTCs P0A1D (INF 187): Specific random access memory destruction
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 187) is not detected

CONFIRMATION DRIVING PATTERN

A01I2HFE01

  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 and wait for 30 seconds or more.

  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. Read the current DTCs.

    Tech Tips


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

    • If current DTCs are not output, check for permanent DTCs.

  10. Check that the permanent DTCs are cleared.

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

INSPECTION PROCEDURE

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch on (IG) and wait for 30 seconds or more.

PROCEDURE


  1. REPLACE POWER MANAGEMENT CONTROL ECU

    Click here


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