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Home >> Toyota >> 2012 >> Highlander Hybrid >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control System (Diagnostic Codes (P0A69-677 - P0A79-716)) (Hybrid) >> Hybrid Control System >> DTC P0A79-695: Drive Motor "B" Inverter Performance; DTC P0A79-814: Drive Motor "B" Inverter Performance >> Procedure

DTC P0A79-695: Drive Motor "B" Inverter Performance; DTC P0A79-814: Drive Motor "B" Inverter Performance: Procedure

  1. CHECK DTC OUTPUT (HV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      P0A79-716 is not output. A
      P0A79-716 is also output. B
      NOTE:
      • If P0A79-716 is output, troubleshoot it first. After completing the troubleshooting for P0A79-716, return to perform troubleshooting for this DTC.
      • Parts repaired or replaced during troubleshooting for P0A79-716 do not need to be re-inspected in this diagnosis procedure.
    5. Turn the ignition switch off.

    B → See step   9 

    A: Go to next step 

  2. CHECK DTC OUTPUT (HV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      HINT: 

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

      Result

      Result Proceed to
      P0A79-695 or 814 only is output. A
      Any of the following DTCs are also output. B
      TABLE 1

      DTC No. Relevant Diagnosis
      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

      DTC No. Relevant Diagnosis
      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 814 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.
    5. Turn the ignition switch off.

    B → See step   10 

    A: Go to next step 

  3. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR). Refer to  PROCEDURE - Step 2 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - REAR MOTOR RESOLVER). Refer to  PROCEDURE - Step 7 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK REAR MOTOR RESOLVER. Refer to  PROCEDURE - Step 8 

    NG → See step   7 

    OK: Go to next step 

  6. CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR). Refer to  PROCEDURE - Step 11 

    NG → CONNECT SECURELY 

    OK → See step   11 

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

    NG → CONNECT SECURELY 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - REAR MOTOR RESOLVER). Refer to  PROCEDURE - Step 17 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   12 

  9. GO TO DTC CHART. Refer to  DTC P0A79-716: Drive Motor "B" Inverter Performance  
  10. GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  11. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL 
  12. REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY. Refer to  REMOVAL