HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A1B-163, P0A1B-164, P0A1B-192, P0A1B-193, P0A1B-511, P0A1B-512, P0A1B-661, P0A1B-786, P0A1B-794

DTC Code DTC Name
P0A1B-163 Drive Motor "A" Control Module
P0A1B-164 Drive Motor "A" Control Module
P0A1B-192 Drive Motor "A" Control Module
P0A1B-193 Drive Motor "A" Control Module
P0A1B-511 Drive Motor "A" Control Module
P0A1B-512 Drive Motor "A" Control Module
P0A1B-661 Drive Motor "A" Control Module
P0A1B-786 Drive Motor "A" Control Module
P0A1B-794 Drive Motor "A" 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.

Tech Tips

The term "drive motor A" indicates MG2.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A1B 163 IPM positive power source error Inverter with converter assembly
164 IPM negative power source error
192 A/D converter error
193 CPU ROM-RAM error
511 Standard voltage for analog signal offset
512 Standard voltage for analog signal error
661 Communication error (from MG2 to MG1)
786 ALU error
794 R/D converter communication error

MONITOR DESCRIPTION

The MG ECU (in the inverter with converter assembly) 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 motor CPU self-test. If the MG ECU detects a "Fail" from the motor CPU self-test, it will conclude that there is an internal malfunction in the motor CPU. The power management control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY

Related DTCs

P0A1B (INF 163): Motor CPU power malfunction (26 V)

P0A1B (INF 164): Motor CPU power malfunction (-5 V)

P0A1B (INF 192): A/D malfunction (2 MG CPU)

P0A1B (INF 193): RAM and ROM destruction

P0A1B (INF 511): Motor CPU power malfunction (2.5 V)

P0A1B (INF 512): Motor CPU power malfunction (5 Aref)

P0A1B (INF 661): 2 MG CPU communication malfunction (2 MG CPU to 1 MG CPU)

P0A1B (INF 786): MG CPU ALU malfunction

P0A1B (INF 794): R/D converter communication malfunction
Required sensors / components Inverter with converter (MG ECU)
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation

1 driving cycle: P0A1B-163, 164, 192, 193, 511, 512, 661, 794

Immediately: P0A1B-786
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 P0A1B (INF 163/164/192/193/511/512/661/786/794) 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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