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Home >> Lexus >> 2011 >> LS 600hL >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control System (Diagnostic Codes (P0A1A-200 - P0A7A-344)) >> 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 >> Procedure

DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module: Procedure

  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

      Result Proceed to
      P0A1B-168, 795 or 796 only is 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

    B → Go to step   13 

    A: Go to next step 

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

    NG → CONNECT SECURELY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - GENERATOR RESOLVER) Go to step   3 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK GENERATOR RESOLVER Go to step   4 

    NG → Go to step   9 

    OK: Go to next step 

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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. CHECK MOTOR RESOLVER Go to step   6 

    NG → Go to step   11 

    OK: Go to next step 

  7. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) Go to step   7 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  8. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) Go to step   8 

    NG → CONNECT SECURELY 

    OK → Go to step   14 

  9. CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) Go to step   9 

    NG → CONNECT SECURELY 

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - GENERATOR RESOLVER) Go to step   9 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → Go to step   11 

  11. CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) Go to step   10 

    NG → CONNECT SECURELY 

    OK: Go to next step 

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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → Go to step   15 

  13. GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  14. REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  COMPONENTS 
  15. REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY. Refer to  COMPONENTS 
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