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Home >> Lexus >> 2009 >> LS 600hL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (Diagnostic Codes (P0A7A-324 - P1557-887)) >> Hybrid Control System >> DTC P0A7A-517: Generator Inverter Performance; DTC P0A7A-518: Generator Inverter Performance >> Procedure

DTC P0A7A-517: Generator Inverter Performance; DTC P0A7A-518: Generator Inverter Performance: Procedure

  1. CHECK DTC OUTPUT (HV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      P3245-203 is not output. A
      P3245-203 is also output. B

    B → See step   27 

    A: Go to next step 

  2. CHECK DTC OUTPUT (HV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      P0A7A-517 or 518 is output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      P0A1A (all INF codes) *1 Generator Control Module
      P0A1B (all INF codes) *1 Drive Motor "A" Control Module
      P0A1D (all INF codes) *1 Hybrid Powertrain Control Module
      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
      P0A4B-253 Generator Position Sensor Circuit
      P0A4C-513 Generator Position Sensor Circuit Range / Performance
      P0A4D-255 Generator Position Sensor Circuit Low
      P0A60 (all INF codes) *1 Drive Motor "A" Phase V Current
      P0A63 (all INF codes) *1 Drive Motor "A" Phase W Current
      P0A72 (all INF codes) *1 Generator Phase V Current
      P0A75 (all INF codes) *1 Generator Phase W Current
      P0A78-266, 267, 523, 586 Drive Motor "A" Inverter Performance
      P0A94-585, 587, 589, 590 DC / DC Converter Performance

      HINT: 

      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic flowchart.
      • P0A7A-517 or 518 may be set due to a malfunction which also causes DTCs in the preceding table to be set. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

    B → See step   22 

    A: Go to next step 

  3. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR). Refer to  PROCEDURE - Step 3 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - GENERATOR RESOLVER). Refer to  PROCEDURE - Step 4 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK GENERATOR RESOLVER. Refer to  PROCEDURE - Step 5 

    NG → See step   14 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER). Refer to  PROCEDURE - Step 6 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. CHECK MOTOR RESOLVER. Refer to  PROCEDURE - Step 7 

    NG → See step   16 

    OK: Go to next step 

  8. CHECK INVERTER WITH CONVERTER ASSEMBLY (GENERATOR CABLE CONNECTION CONDITION). Refer to  PROCEDURE - Step 8 

    C → CONNECT SECURELY 

    B → REPLACE MALFUNCTIONING PARTS 

    A: Go to next step 

  9. CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE CONNECTION CONDITION). Refer to  PROCEDURE - Step 9 

    C → CONNECT SECURELY 

    B → REPLACE MALFUNCTIONING PARTS 

    A: Go to next step 

  10. CHECK HYBRID VEHICLE TRANSMISSION ASSEMBLY (MG1). Refer to  PROCEDURE - Step 10 

    NG → See step   18 

    OK: Go to next step 

  11. CHECK HYBRID VEHICLE TRANSMISSION ASSEMBLY (MG2). Refer to  PROCEDURE - Step 11 

    NG → See step   20 

    OK: Go to next step 

  12. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR). Refer to  PROCEDURE - Step 12 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  13. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR). Refer to  PROCEDURE - Step 13 

    NG → CONNECT SECURELY 

    OK → See step   24 

  14. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR). Refer to  PROCEDURE - Step 19 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  15. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY (MG ECU)-GENERATOR RESOLVER). Refer to  PROCEDURE - Step 20 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   23 

  16. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR). Refer to  PROCEDURE - Step 21 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  17. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY (MG ECU) - MOTOR RESOLVER). Refer to  PROCEDURE - Step 22 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   23 

  18. CHECK HYBRID VEHICLE TRANSMISSION ASSEMBLY (GENERATION CABLE CONNECTION CONDITION). Refer to  PROCEDURE - Step 23 

    C → CONNECT SECURELY 

    B → REPLACE MALFUNCTIONING PARTS 

    A: Go to next step 

  19. CHECK GENERATOR CABLE. Refer to  PROCEDURE - Step 24 

    NG → See step   25 

    OK → See step   23 

  20. CHECK HYBRID VEHICLE TRANSMISSION ASSEMBLY (MOTOR CABLE CONNECTION CONDITION). Refer to  PROCEDURE - Step 25 

    C → CONNECT SECURELY 

    B → REPLACE MALFUNCTIONING PARTS 

    A: Go to next step 

  21. CHECK MOTOR CABLE. Refer to  PROCEDURE - Step 26 

    NG → See step   26 

    OK → See step   23 

  22. GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  23. REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY. Refer to  REMOVAL 
  24. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL 
  25. REPLACE GENERATOR CABLE. Refer to  REMOVAL 
  26. REPLACE MOTOR CABLE. Refer to  REMOVAL 
  27. GO TO DTC CHART. Refer to  DTC P3245-203: Short in Inverter Circuit 
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