LEMON Manuals: Even more car manuals for everyone
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 P0A78-121: Drive Motor "A" Inverter Performance >> Procedure

DTC P0A78-121: Drive Motor "A" Inverter Performance: 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
      P0A1A (all INF codes) *1 Generator Control Module
      P0A1B (all INF codes) *1 Drive Motor "A" Control Module
      P0A1D (Except INF code 390) 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
      P0A78-113, 128, 266, 267, 279, 284, 286, 287, 306, 503, 504, 505, 506, 523, 586, 806, 807, 808 Drive Motor "A" Inverter Performance
      P0A7A-122, 130, 322, 324, 325, 344, 517, 518, 809, 810, 811 Generator Inverter Performance
      P0A90-509 Drive Motor "A" Performance
      P0A92-521 Hybrid Generator Performance
      P0A94-172, 442, 548, 549, 553, 554, 555, 556, 557, 547, 585, 587, 589, 590 DC/DC Converter Performance
      P0ADB-227 Hybrid Battery Positive Contactor Control Circuit Low
      P0ADC-226 Hybrid Battery Positive Contactor Control Circuit High
      P0ADF-229 Hybrid Battery Negative Contactor Control Circuit Low
      P0AE0-228 Hybrid Battery Negative Contactor Control Circuit High
      P3004-803 High Voltage Power Resource

      HINT: 

      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic flowchart.
      • 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.
      • P0A78-121 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) See step   3 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK GENERATOR RESOLVER See step   4 

    NG → See step   22 

    OK: Go to next step 

  5. 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 

  6. CHECK MOTOR RESOLVER See step   4 

    NG → See step   20 

    OK: Go to next step 

  7. CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE CONNECTION CONDITION) See step   4 

    NG → TIGHTEN TO SPECIFIED TORQUE 

    OK: Go to next step 

  8. CHECK INVERTER WITH CONVERTER ASSEMBLY (GENERATOR CABLE CONNECTION CONDITION) See step   5 

    NG → TIGHTEN TO SPECIFIED TORQUE 

    OK: Go to next step 

  9. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG1) See step   6 

    NG → See step   24 

    OK: Go to next step 

  10. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG2) See step   7 

    NG → See step   24 

    OK: Go to next step 

  11. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) See step   5 

    NG → CONNECT SECURELY 

    OK: Go to next step 

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

    NG → CONNECT SECURELY 

    OK: Go to next step 

  13. CHECK INVERTER WITH CONVERTER ASSEMBLY (HIGH VOLTAGE CONNECTOR CONNECTION CONDITION) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
      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. Check the connection of the high voltage connector of the inverter with converter assembly.
      Fig 1: Identifying Locating Inverter With Converter Assembly Bolts Location
      GTY192887Courtesy 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 

  14. CHECK SERVICE PLUG GRIP 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check the connection of the service plug grip.
      Fig 2: Identifying Connection Of Service Plug Grip
      GTY192894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      Dirt or foreign objects have not entered the connection, or there is no evidence of contamination.

    NG → REPLACE SERVICE PLUG GRIP 

    OK: Go to next step 

  15. CHECK SERVICE PLUG GRIP 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying Service Plug Schematic
      GTY147385Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      Service plug grip terminal Below 1 Ω

    NG → REPLACE SERVICE PLUG GRIP 

    OK: Go to next step 

  16. CHECK CONDITION OF FRAME WIRE CONNECTION(S) (HV RELAY ASSEMBLY SIDE). Refer to  PROCEDURE - Step 5 

    NG → TIGHTEN TO SPECIFIED TORQUE 

    OK: Go to next step 

  17. CHECK FRAME WIRE 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Check that the service plug grip is not installed.
    2. Disconnect the frame wire from the HV relay.
    3. Disconnect the frame wire from the high voltage connector of the inverter with converter assembly.
      Fig 4: Identifying Locating Inverter With Converter Assembly Bolts Location
      GTY192887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance according to the value(s) in the table below.
      Fig 5: Identifying h1 Frame Wire Connector Terminal Identification
      GTY175415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      h4-1 (high voltage +) - h1-1 (high voltage +) Below 1 Ω
      h3-1 (high voltage -) - h1-2 (high voltage -) Below 1 Ω
    5. Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.
      Fig 6: Identifying Frame Wire Component Point Location
      GTY172897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard resistance

      Tester Connection Specified Condition
      h4-1 - Body ground and shielded wire ground 10 MΩ or more
      h3-1 - Body ground and shielded wire ground 10 MΩ or more
      h4-1 (high voltage +) - h3-1 (high voltage -) 10 MΩ or more

    NG → REPLACE FRAME WIRE 

    OK: Go to next step 

  18. INSPECT HV RELAY ASSEMBLY (SMRB) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed.
    2. Remove the HV relay assembly from the vehicle. Refer to REMOVAL .
    3. Measure the resistance according to the value(s) in the table below.
      Fig 7: Identifying s1 HV Relay Assembly Connector Terminal Identification
      GTY192900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      h4-1 - s1-1 Below 1 Ω
      (When battery voltage (12 V) applied between terminals n3-2 and n3-3)
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Specified Condition
      CON2 (n3-3) - GND (n3-2) 18.8 to 32.1 Ω at -35 to 80°C (-31 to 176°F)

    NG → See step   25 

    OK: Go to next step 

  19. INSPECT HV RELAY ASSEMBLY (SMRG) 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Check that the service plug grip is not installed.
    2. Measure the resistance according to the value(s) in the table below.
      Fig 8: Identifying HV Relay Assembly Connector Terminal Identification
      GTY192901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Specified Condition
      h3-1 - t1-1 Below 1 Ω
      (When battery voltage applied between terminals n3-1 and n3-2)
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Specified Condition
      CON3 (n3-1) - GND (n3-2) 18.8 to 32.1 Ω at -35 to 80°C (-31 to 176°F)

    NG → See step   25 

    OK → See step   26 

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

    NG → CONNECT SECURELY 

    OK: Go to next step 

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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   24 

  22. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) See step   5 

    NG → CONNECT SECURELY 

    OK: Go to next step 

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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   24 

  24. REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  REMOVAL 
  25. REPLACE HV RELAY ASSEMBLY. Refer to  REMOVAL 
  26. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL 
scientia non olet · About LEMON Manuals