LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (1 Of 6) >> 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 [06/2015 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [06/2015 - ]: Procedure

  1. CHECK DTC OUTPUT (EV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / EV / Trouble Codes.
    4. Check for DTCs.

      Powertrain > EV > Trouble Codes 

      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
      Relevant DTC
      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
      P1D75-450 FC Air Compressor Motor "A" Position Sensor Circuit
    5. Turn the power switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2015 - 11/2018]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2018 - ] 

    Result: 

    A 

    See step  2

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

    See step  2

    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: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - FC AIR COMPRESSOR MOTOR RESOLVER) 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK FC AIR COMPRESSOR MOTOR RESOLVER 

    Refer to PROCEDURE - Step 4

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  5

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

    Refer to PROCEDURE - Step 5

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK DRIVE MOTOR RESOLVER 

    Refer to PROCEDURE - Step 6

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  7

  7. CHECK CONNECTOR CONNECTION CONDITION (FC AIR COMPRESSOR REVOLUTION SENSOR WIRE CONNECTOR) 

    Refer to PROCEDURE - Step 7

    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: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  8

  8. CHECK CONNECTOR CONNECTION CONDITION (DRIVE MOTOR RESOLVER CONNECTOR) 

    Refer to PROCEDURE - Step 8

    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: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  9

  9. CHECK CONNECTOR CONNECTION CONDITION (FC AIR COMPRESSOR MOTOR RESOLVER CONNECTOR) 

    Refer to PROCEDURE - Step 9

    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: 

    A 

    REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  10. CHECK CONNECTOR CONNECTION CONDITION (DRIVE MOTOR RESOLVER CONNECTOR) 

    Refer to PROCEDURE - Step 10

    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: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - DRIVE MOTOR RESOLVER) 

    Refer to PROCEDURE - Step 11

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE FCV TRANSAXLE WITH MOTOR ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  12. CHECK CONNECTOR CONNECTION CONDITION (FC AIR COMPRESSOR REVOLUTION SENSOR WIRE 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: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - FC AIR COMPRESSOR MOTOR RESOLVER) 

    Refer to PROCEDURE - Step 13

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. CHECK CONNECTOR CONNECTION CONDITION (FC AIR COMPRESSOR MOTOR RESOLVER CONNECTOR) 

    Refer to PROCEDURE - Step 14

    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: 

    B 

    CONNECT SECURELY 

    Result: 

    C 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    A 

    See step  15

  15. CHECK FC AIR COMPRESSOR REVOLUTION SENSOR WIRE 

    Refer to PROCEDURE - Step 15

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE FC AIR COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE FC AIR COMPRESSOR REVOLUTION SENSOR WIRE 

scientia non olet · About LEMON Manuals