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Home >> Toyota >> 2014 >> Prius Two >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes (P0069-273 - P0A72-326) (Except Plug-In) >> Hybrid Control System >> DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [10/2013 - ] >> Procedure
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DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [10/2013 - ]: Procedure

  1. CHECK DTC OUTPUT (HV) 
    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 if DTCs are output.

      Result

      Result Proceed to
      P0A1B-168, 795 or 796 only is output or DTCs except the ones in the table below are also output. A
      Any of the following DTCs are also output. B
      DTC No. Relevant Diagnosis
      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
    5. Turn the power switch off.

    B → See step   13 

    A: Go to next step 

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

    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   9 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER) See step   5 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. CHECK MOTOR RESOLVER See step   6 

    NG → See step   11 

    OK: Go to next step 

  7. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) See step   7 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  8. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) See step   8 

    NG → CONNECT SECURELY 

    OK → See step   14 

  9. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) See step   9 

    NG → CONNECT SECURELY 

    OK: Go to next step 

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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   15 

  11. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) See step   11 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  12. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER) See step   12 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   15 

  13. GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2013 - ] 
  14. REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS. Refer to  DTC CHECK / CLEAR [10/2013 - ] 
  15. REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY. Refer to  COMPONENTS [10/2013 - ] 
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