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Home >> Toyota >> 2011 >> Camry Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 67 (Hybrid Vehicle Control System (P311) (Hybrid) (Diagnostic Codes (P0343-747 - P0A78-282)) >> Hybrid Control System >> DTC P0A1A-200: Generator Control Module; DTC P0A1A-792: Generator Control Module; DTC P0A1A-793: Generator Control Module >> Procedure

DTC P0A1A-200: Generator Control Module; DTC P0A1A-792: Generator Control Module; DTC P0A1A-793: Generator Control Module: Procedure

WARNING: This page is about a different variant/trim than selected.
  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

      DTC No. Relevant Diagnosis
      P0A4B-253, P0A4C-513, P0A4D-255 Generator resolver circuit

      HINT: 

      • Turning the power switch on (IG) with the service plug grip and inverter cover removed causes interlock switch system DTC P0A0D-350 to be output.
      • P0A1A-200, P0A1A-792 or P0A1A-793 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

    YES → GO TO  DIAGNOSTIC TROUBLE CODE CHART  DTC CHART 

    NO: Go to next step 

  2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) See step   4 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - GENERATOR RESOLVER) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Turn the power switch off and remove the service plug grip. Refer to PRECAUTION .
      NOTE:

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the C58 inverter with converter assembly connector.
      Fig 1: Identifying C58 Inverter With Converter Assembly Connector Terminal Identification
      GTY177653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Specified Condition
      GRF (C58-6) - Body ground Below 1 V
      GRFG (C58-5) - Body ground Below 1 V
      GSN (C58-1) - Body ground Below 1 V
      GSNG (C58-2) - Body ground Below 1 V
      GCS (C58-3) - Body ground Below 1 V
      GCSG (C58-4) - Body ground Below 1 V
      NOTE:

      Turning the power switch on (IG) with the inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK GENERATOR RESOLVER 
    1. Turn the power switch off.
      Fig 2: Identifying C58 Inverter With Converter Assembly Connector Terminal Identification
      GTY177653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Specified Condition
      GRF (C58-6) - GRFG (C58-5) 4.2 to 12.5 Ω
      GSN (C58-1) - GSNG (C58-2) 9.8 to 20.1 Ω
      GCS (C58-3) - GCSG (C58-4) 9.8 to 20.1 Ω
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for short)

      Tester Connection Specified Condition
      GRF (C58-6) or GRFG (C58-5) - Body ground 10 kΩ or more
      GSN (C58-1) or GSNG (C58-2) - Body ground 10 kΩ or more
      GCS (C58-3) or GCSG (C58-4) - Body ground 10 kΩ or more
      GRF (C58-6) - GCSG (C58-4) 10 kΩ or more
      GRF (C58-6) - GCS (C58-3) 10 kΩ or more
      GRF (C58-6) - GSNG (C58-2) 10 kΩ or more
      GRF (C58-6) - GSN (C58-1) 10 kΩ or more
      GRFG (C58-5) - GCSG (C58-4) 10 kΩ or more
      GRFG (C58-5) - GCS (C58-3) 10 kΩ or more
      GRFG (C58-5) - GSNG (C58-2) 10 kΩ or more
      GRFG (C58-5) - GSN (C58-1) 10 kΩ or more
      GCSG (C58-4) - GSNG (C58-2) 10 kΩ or more
      GCSG (C58-4) - GSN (C58-1) 10 kΩ or more
      GCS (C58-3) - GSNG (C58-2) 10 kΩ or more
      GCS (C58-3) - GSN (C58-1) 10 kΩ or more

    OK → See step   7 

    NG: Go to next step 

  5. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) 
    1. Check the connection of the generator resolver connector.
      Fig 3: Identifying Generator Resolver Connector Location
      GTY192873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      The connector is connected securely and there are no contact problems.

    NG → CONNECT SECURELY 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - GENERATOR RESOLVER) 
    1. Disconnect the C59 generator resolver connector.
      Fig 4: Identifying C58 And C59 Generator Resolver Connector Terminal Identification
      GTY192899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Specified Condition
      GRF (C58-6) - GRF (C59-1) Below 1 Ω
      GRFG (C58-5) - GRFG (C59-6) Below 1 Ω
      GSN (C58-1) - GSN (C59-2) Below 1 Ω
      GSNG (C58-2) - GSNG (C59-7) Below 1 Ω
      GCS (C58-3) - GCS (C59-3) Below 1 Ω
      GCSG (C58-4) - GCSG (C59-8) Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Specified Condition
      GRF (C58-6) or GRF (C59-1) - Body ground 10 kΩ or more
      GRFG (C58-5) or GRFG (C59-6) - Body ground 10 kΩ or more
      GSN (C58-1) or GSN (C59-2) - Body ground 10 kΩ or more
      GSNG (C58-2) or GSNG (C59-7) - Body ground 10 kΩ or more
      GCS (C58-3) or GCS (C59-3) - Body ground 10 kΩ or more
      GCSG (C58-4) or GCSG (C59-8) - Body ground 10 kΩ or more
      GRF (C58-6) - GRFG (C58-5) 10 kΩ or more
      GCS (C58-3) - GCSG (C58-4) 10 kΩ or more
      GSN (C58-1) - GSNG (C58-2) 10 kΩ or more
      GRF (C58-6) - GCSG (C58-4) 10 kΩ or more
      GRF (C58-6) - GCS (C58-3) 10 kΩ or more
      GRF (C58-6) - GSN (C58-1) 10 kΩ or more
      GRF (C58-6) - GSNG (C58-2) 10 kΩ or more
      GRFG (C58-5) - GCSG (C58-4) 10 kΩ or more
      GRFG (C58-5) - GCS (C58-3) 10 kΩ or more
      GRFG (C58-5) - GSN (C58-1) 10 kΩ or more
      GRFG (C58-5) - GSNG (C58-2) 10 kΩ or more
      GCSG (C58-4) - GSN (C58-1) 10 kΩ or more
      GCSG (C58-4) - GSNG (C58-2) 10 kΩ or more
      GCS (C58-3) - GSN (C58-1) 10 kΩ or more
      GCS (C58-3) - GSNG (C58-2) 10 kΩ or more

      HINT: 

      The generator resolver is not available separately. If it requires replacement, replace the hybrid vehicle transaxle assembly.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   12 

  7. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER) See step   3 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  8. CHECK MOTOR RESOLVER See step   4 

    NG → See step   11 

    OK: Go to next step 

  9. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) See step   5 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER) See step   6 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   12 

  11. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL 
  12. REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  REMOVAL 
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