HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A1A-151, P0A1A-155, P0A1A-156, P0A1A-658, P0A1A-659, P0A1A-791

DTC Code DTC Name
P0A1A-151 Generator Control Module
P0A1A-155 Generator Control Module
P0A1A-156 Generator Control Module
P0A1A-658 Generator Control Module
P0A1A-659 Generator Control Module
P0A1A-791 Generator Control Module

DESCRIPTION

The MG ECU located in the inverter with converter assembly monitors its internal operation and it will set DTCs when it detects malfunctions. If any of the following DTCs are output, replace the inverter with converter assembly.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A1A 151 Run pulse signal cycle deviation or stop Inverter with converter assembly
155 A/D converter error
156 CPU ROM-RAM error
658 ALU error
659 Communication error (from MG1 to MG2)
791 R/D converter communication error

MONITOR DESCRIPTION

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

MONITOR STRATEGY

Related DTCs

P0A1A (INF 151): RUN pulse malfunction

P0A1A (INF 155): A/D malfunction (1 MG CPU)

P0A1A (INF 156): RAM and ROM destruction

P0A1A (INF 658): MG CPU ALU malfunction

P0A1A (INF 659): MG CPU communication malfunction (1 MG CPU to 2 MG CPU)

P0A1A (INF 791): R/D converter communication malfunction
Required sensors / components Inverter with converter assembly (MG ECU)
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation 1 driving cycle
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 P0A1A (INF 151/155/156/658/659/791) is not detected

CONFIRMATION DRIVING PATTERN

A011XPYE02

  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 1 minute or more, 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 INVERTER WITH CONVERTER ASSEMBLY

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