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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (2GR-FXE) - Diagnostic Codes (6 Of 7) >> Hybrid Control System >> DTC P0A79-695: Drive Motor "B" Inverter Performance; DTC P0A79-814: Drive Motor "B" Inverter Performance [02/2014 - 11/2016] >> Procedure

DTC P0A79-695: Drive Motor "B" Inverter Performance; DTC P0A79-814: Drive Motor "B" Inverter Performance [02/2014 - 11/2016]: 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
      P0A79-716 is not output.
      P0A79-716 is also output.
      NOTE:
      • If P0A79-716 is output, troubleshoot it first. After completing the troubleshooting for P0A79-716, perform troubleshooting for this DTC.
      • Parts repaired or replaced during troubleshooting for P0A79-716 do not need to be re-inspected in this diagnostic procedure.
    5. Turn the power switch off.

    Result:  2

    P0A79-716 is also output. 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [02/2014 - 11/2015]  Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2016] 

    Result:  1

    P0A79-716 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 P0A79-716 was not output in step 1 of this diagnostic procedure, check Table 1 below.
      • If P0A79-716 was output in step 1 of this diagnostic procedure, diagnose that DTC first, then check Table 2 below.

      Result

      Result Proceed to
      P0A79-695 or P0A79-814 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

      Relevant DTC
      P0A1A (all INF codes)*1 Generator Control Module
      P0A1B (all INF codes)*1 Drive Motor "A" Control Module
      P0A1C (all INF codes)*1 Drive Motor "B" 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
      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
      P0A60 (all INF codes)*1 Drive Motor "A" Phase V Current
      P0A63 (all INF codes)*1 Drive Motor "A" Phase W Current
      P0A69 (all INF codes)*1 Drive Motor "B" Phase V Current
      P0A6C (all INF codes)*1 Drive Motor "B" Phase W Current
      P0A72 (all INF codes)*1 Generator Phase V Current
      P0A75 (all INF codes)*1 Generator Phase W Current
      P0A78-266, 267, 586 Drive Motor "A" Inverter Performance
      P0A94-585, 587, 589, 590 DC / DC Converter Performance
      P0C76-523 Hybrid Battery System Discharge Time Too Long
      TABLE 2

      Relevant DTC
      P0A1A (all INF codes)*1 Generator Control Module
      P0A1B (all INF codes)*1 Drive Motor "A" Control Module
      P0A1C (all INF codes)*1 Drive Motor "B" 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
      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
      P0A60 (all INF codes)*1 Drive Motor "A" Phase V Current
      P0A63 (all INF codes)*1 Drive Motor "A" Phase W Current
      P0A69-677 Drive Motor "B" Phase V Current
      P0A6C-678 Drive Motor "B" Phase W Current
      P0A72 (all INF codes)*1 Generator Phase V Current
      P0A75 (all INF codes)*1 Generator Phase W Current
      P0A78-266, 267, 586 Drive Motor "A" Inverter Performance
      P0A94-585, 587, 589, 590 DC / DC Converter Performance
      P0C76-523 Hybrid Battery System Discharge Time Too Long

      HINT: 

      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
      • P0A79-695 or P0A79-814 may be stored due to a malfunction which also causes DTCs in the preceding tables to be stored. In this case, first troubleshoot the output DTCs in the preceding tables. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.
    5. Turn the power switch off.

    Result:  2

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [02/2014 - 11/2015]  Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2016] 

    Result:  1

    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:  2

    B 

    CONNECT SECURELY 

    Result:  3

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    A 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - REAR MOTOR RESOLVER) 

    Refer to PROCEDURE - Step 7

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  5

  5. CHECK REAR MOTOR RESOLVER 

    Refer to PROCEDURE - Step 8

    Result

    Proceed to
    OK
    NG

    Result:  2

    NG 

    See step  7

    Result:  1

    OK 

    See step  6

  6. CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR) 

    Refer to PROCEDURE - Step 11

    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:  1

    A 

    REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  COMPONENTS [02/2014 - 11/2016] 

    Result:  2

    B 

    CONNECT SECURELY 

    Result:  3

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  7. CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR) 

    Refer to PROCEDURE - Step 12

    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:  2

    B 

    CONNECT SECURELY 

    Result:  3

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    A 

    See step  8

  8. INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR RESOLVER) 

    Refer to PROCEDURE - Step 13

    Result

    Proceed to
    OK
    NG

    Result:  1

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  2

    NG 

    REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [02/2014 - 11/2016] 

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