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Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes) (2 Of 10) >> Hybrid Control System >> DTC P0A1A-517: Generator Control Module; DTC P0A1A-809: Generator Control Module [10/2015 - ] >> Procedure
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DTC P0A1A-517: Generator Control Module; DTC P0A1A-809: Generator Control Module [10/2015 - ]: Procedure

  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Proceed to
      P0A7A-203 is not output.
      P0A7A-203 is also output.
      NOTE:
      • If P0A7A-203 is output, troubleshoot it first. After completing the troubleshooting for P0A7A-203, perform troubleshooting for this DTC.
      • Parts repaired or replaced during troubleshooting for P0A7A-203 do not need to be re-inspected in this diagnostic procedure.
    5. Turn the power switch off.

    Result: 

    P0A7A-203 is also output. 

    GO TO DTC CHART (P0A7A-203). Refer to  DTC P0A7A-203: Generator Inverter Performance [10/2015 - ] 

    Result: 

    P0A7A-203 is not output. 

    See step  2

  2. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      HINT: 

      • If P0A7A-203 was not output in step 1 of this diagnostic procedure, check Table 1 below.
      • If P0A7A-203 was output in step 1 of this diagnostic procedure, diagnose that DTC first, then check Table 2 below.

      Result

      Result Proceed to
      P0A1A-517 or 809 only is output, or DTCs except the ones in the tables below are also output. A
      Any of the following DTCs are also output. B

      Table 1

      Malfunction Content Relevant DTC
      Microcomputer malfunction P0A1A-151, 166, 658, 791 Generator Control Module
      P0A1B-198, 786, 794 Drive Motor "A" Control Module
      P0A1C-709, 710, 713, 797 Drive Motor "B" Control Module
      P0A1D (all INF codes)*1 Hybrid Powertrain Control Module
      P1C2A-155 Generator A/D Converter Circuit
      P1C2B-192 Drive Motor "A" A/D Converter Circuit
      P1C2C-706 Drive Motor "B" A/D Converter Circuit
      P1CA6-156 Generator Control Module Malfunction
      P1CA7-193 Drive Motor Control Module Malfunction
      P1CA8-708 Drive Motor "B" Control Module Malfunction
      P1CAC-200 Generator Position Sensor Angle Malfunction
      P1CAD-168 Drive Motor "A" Position Sensor Angle Malfunction
      P1CAE-715 Drive Motor "B" Position Sensor Angle Malfunction
      P1CAF-792 Generator Position Sensor REF Signal Cycle Malfunction
      P1CB0-795 Drive Motor "A" Position Sensor REF Signal Cycle Malfunction
      P1CB1-798 Drive Motor "B" Position Sensor REF Signal Cycle Malfunction
      P1CB2-793 Generator Position Sensor REF Signal Stop Malfunction
      P1CB3-796 Drive Motor "A" Position Sensor REF Signal Stop Malfunction
      P1CB4-799 Drive Motor "B" Position Sensor REF Signal Stop Malfunction
      P3133-659 Communication Error from Generator to Drive Motor "A"
      P3134-661 Communication Error from Drive Motor "A" to Generator
      Power source circuit malfunction P06B0-163 Sensor Power Supply "A" Circuit / Open
      P06D6-511 Sensor Reference Voltage "F" Circuit / Open
      P06E6-164 Sensor Power Supply "C" Circuit / Open
      P1C73-512 Sensor Standard Voltage "F" Circuit / Open
      Sensor and actuator circuit malfunction P0A3F-243 Drive Motor "A" Position Sensor Circuit
      P0A40-500 Drive Motor "A" Position Sensor Circuit Range / Performance
      P0A41-245 Drive Motor "A" Position Sensor Circuit Low
      P0A45-669 Drive Motor "B" Position Sensor Circuit
      P0A46-671 Drive Motor "B" Position Sensor Circuit Range / Performance
      P0A47-670 Drive Motor "B" Position Sensor Circuit Low
      P0A4B-253 Generator Position Sensor Circuit
      P0A4C-513 Generator Position Sensor Circuit Range / Performance
      P0A4D-255 Generator Position Sensor Circuit Low
      P0BEA-290 Drive Motor "A" Phase V Current Sensor Circuit Range / Performance
      P0BEE-298 Drive Motor "A" Phase W Current Sensor Circuit Range / Performance
      P0BF6-683 Drive Motor "B" Phase V Current Sensor Circuit Range / Performance
      P0BFA-685 Drive Motor "B" Phase W Current Sensor Circuit Range / Performance
      P0D2E-586 Drive Motor "A" Inverter Voltage Sensor Circuit Range / Performance
      P0D2F-266 Drive Motor "A" Inverter Voltage Sensor Circuit Low
      P0D30-267 Drive Motor "A" Inverter Voltage Sensor Circuit High
      P0E05-328 Generator Phase V Current Sensor Circuit Range / Performance
      P0E09-336 Generator Phase W Current Sensor Circuit Range / Performance
      P0E32-585 DC/DC Converter Voltage Sensor "A" Range / Performance
      P0E33-589 DC/DC Converter Voltage Sensor "A" Low
      P0E34-590 DC/DC Converter Voltage Sensor "A" High
      P1C3C-294 Drive Motor "A" Phase V Current Sensor Correlation
      P1C3D-302 Drive Motor "A" Phase W Current Sensor Correlation
      P1C3E-333 Generator Phase V Current Sensor Correlation
      P1C3F-341 Generator Phase W Current Sensor Correlation
      P1C4A-288 Drive Motor "A" Phase V Current Sensor Sub Circuit Range / Performance
      P1C4F-296 Drive Motor "A" Phase W Current Sensor Sub Circuit Range / Performance
      P1C54-326 Generator Phase V Current Sensor Sub Circuit Range / Performance
      P1C59-334 Generator Phase W Current Sensor Sub Circuit Range / Performance
      P1C6D-501 Drive Motor "A" Phase V Current Sensor Offset Range / Performance
      P1C6E-502 Drive Motor "A" Phase W Current Sensor Offset Range / Performance
      P1C6F-688 Drive Motor "B" Phase V Current Sensor Offset Range / Performance
      P1C70-689 Drive Motor "B" Phase W Current Sensor Offset Range / Performance
      P1C71-515 Generator Phase V Current Sensor Offset Range / Performance
      P1C72-516 Generator Phase W Current Sensor Offset Range / Performance
      P33C1-684 Drive Motor "B" Phase V Current Sensor Sub Circuit Range / Performance
      P33C6-686 Drive Motor "B" Phase W Current Sensor Sub Circuit Range / Performance
      P33D8-677 Drive Motor "B" Phase V Current Sensor Correlation
      P33D9-678 Drive Motor "A" Phase W Current Sensor Correlation
      System malfunction P0C76-523 Hybrid Battery System Discharge Time Too Long
      P1C2D-587 Hybrid Battery Voltage / DC/DC Converter Voltage Correlation

      Table 2

      Malfunction Content Relevant DTC
      Microcomputer malfunction P0A1A-151, 166, 658, 791 Generator Control Module
      P0A1B-198, 786, 794 Drive Motor "A" Control Module
      P0A1C-709, 710, 713, 797 Drive Motor "B" Control Module
      P0A1D (all INF codes)*1 Hybrid Powertrain Control Module
      P1C2A-155 Generator A/D Converter Circuit
      P1C2B-192 Drive Motor "A" A/D Converter Circuit
      P1C2C-706 Drive Motor "B" A/D Converter Circuit
      P1CA6-156 Generator Control Module Malfunction
      P1CA7-193 Drive Motor Control Module Malfunction
      P1CA8-708 Drive Motor "B" Control Module Malfunction
      P1CAC-200 Generator Position Sensor Angle Malfunction
      P1CAD-168 Drive Motor "A" Position Sensor Angle Malfunction
      P1CAE-715 Drive Motor "B" Position Sensor Angle Malfunction
      P1CAF-792 Generator Position Sensor REF Signal Cycle Malfunction
      P1CB0-795 Drive Motor "A" Position Sensor REF Signal Cycle Malfunction
      P1CB1-798 Drive Motor "B" Position Sensor REF Signal Cycle Malfunction
      P1CB2-793 Generator Position Sensor REF Signal Stop Malfunction
      P1CB3-796 Drive Motor "A" Position Sensor REF Signal Stop Malfunction
      P1CB4-799 Drive Motor "B" Position Sensor REF Signal Stop Malfunction
      P3133-659 Communication Error from Generator to Drive Motor "A"
      P3134-661 Communication Error from Drive Motor "A" to Generator
      Power source circuit malfunction P06B0-163 Sensor Power Supply "A" Circuit / Open
      P06D6-511 Sensor Reference Voltage "F" Circuit / Open
      P06E6-164 Sensor Power Supply "C" Circuit / Open
      P1C73-512 Sensor Standard Voltage "F" Circuit / Open
      Sensor and actuator circuit malfunction P0A3F-243 Drive Motor "A" Position Sensor Circuit
      P0A40-500 Drive Motor "A" Position Sensor Circuit Range / Performance
      P0A41-245 Drive Motor "A" Position Sensor Circuit Low
      P0A45-669 Drive Motor "B" Position Sensor Circuit
      P0A46-671 Drive Motor "B" Position Sensor Circuit Range / Performance
      P0A47-670 Drive Motor "B" Position Sensor Circuit Low
      P0A4B-253 Generator Position Sensor Circuit
      P0A4C-513 Generator Position Sensor Circuit Range / Performance
      P0A4D-255 Generator Position Sensor Circuit Low
      P0BEA-290 Drive Motor "A" Phase V Current Sensor Circuit Range / Performance
      P0BEE-298 Drive Motor "A" Phase W Current Sensor Circuit Range / Performance
      P0BF6-683 Drive Motor "B" Phase V Current Sensor Circuit Range / Performance
      P0BFA-685 Drive Motor "B" Phase W Current Sensor Circuit Range / Performance
      P0D2E-586 Drive Motor "A" Inverter Voltage Sensor Circuit Range / Performance
      P0D2F-266 Drive Motor "A" Inverter Voltage Sensor Circuit Low
      P0D30-267 Drive Motor "A" Inverter Voltage Sensor Circuit High
      P0E32-585 DC/DC Converter Voltage Sensor "A" Range / Performance
      P0E33-589 DC/DC Converter Voltage Sensor "A" Low
      P0E34-590 DC/DC Converter Voltage Sensor "A" High
      P1C3C-294 Drive Motor "A" Phase V Current Sensor Correlation
      P1C3D-302 Drive Motor "A" Phase W Current Sensor Correlation
      P1C3E-333 Generator Phase V Current Sensor Correlation
      P1C3F-341 Generator Phase W Current Sensor Correlation
      P1C4A-288 Drive Motor "A" Phase V Current Sensor Sub Circuit Range / Performance
      P1C4F-296 Drive Motor "A" Phase W Current Sensor Sub Circuit Range / Performance
      P1C6D-501 Drive Motor "A" Phase V Current Sensor Offset Range / Performance
      P1C6E-502 Drive Motor "A" Phase W Current Sensor Offset Range / Performance
      P1C6F-688 Drive Motor "B" Phase V Current Sensor Offset Range / Performance
      P1C70-689 Drive Motor "B" Phase W Current Sensor Offset Range / Performance
      P33C1-684 Drive Motor "B" Phase V Current Sensor Sub Circuit Range / Performance
      P33C6-686 Drive Motor "B" Phase W Current Sensor Sub Circuit Range / Performance
      P33D8-677 Drive Motor "B" Phase V Current Sensor Correlation
      P33D9-678 Drive Motor "A" Phase W Current Sensor Correlation
      System malfunction P0C76-523 Hybrid Battery System Discharge Time Too Long
      P1C2D-587 Hybrid Battery Voltage / DC/DC Converter Voltage Correlation

      HINT: 

      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
      • P0A1A-517 or P0A1A-809 may be output as a result of the malfunction indicated by the DTCs above.
        1. The chart above is listed in inspection order of priority.
        2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
    5. Turn the power switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 08/2016]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 12/2017]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2017 - 03/2018]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2018 - 08/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 07/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [07/2021 - ] 

    Result: 

    A 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) 

    Refer to PROCEDURE - Step 3

    Result

    Result Proceed to
    OK A
    NG (The connector is not connected securely.) B
    NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    Result: 

    A 

    REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL [10/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 12/2017]  , or refer to  REMOVAL [12/2017 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

    Result: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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