HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A1D-162, P0A1D-821, P0A1D-822, P0A1D-823
| DTC Code | DTC Name |
|---|---|
| P0A1D-162 | Hybrid Powertrain Control Module |
| P0A1D-821 | Hybrid Powertrain Control Module |
| P0A1D-822 | Hybrid Powertrain Control Module |
| P0A1D-823 | 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 | 162 | ECU internal error | Power management control ECU |
| 821 | |||
| 822 | |||
| 823 |
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 communication bus off count and the message register of the CAN (Controller Area Network) controller. If the power management control ECU detects an error in the communication bus off count or message register, it will conclude that there is a 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 162/821/822/823): Lost communication with HV CPU/Monitor CPU |
| 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 162/821/822/823) is not detected |
CONFIRMATION DRIVING PATTERN
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Connect the Techstream to the DLC3.
-
Turn the power switch on (IG) and turn the Techstream on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the power switch off.
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Turn the power switch on (READY) and after a few seconds, turn the power switch off. [A]
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Repeat [A] 3 times. [B]
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Turn the power switch on (IG) and turn the Techstream on.
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Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [C]
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Check that permanent DTCs are cleared.
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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
