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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Engine Control System - Diagnostic Codes (P0627-P107A)) >> SFI System >> DTC P0A14-12: Engine Mount "A" Control Circuit High Circuit Short to Battery [03/2023 - ] >> Procedure

DTC P0A14-12: Engine Mount "A" Control Circuit High Circuit Short to Battery [03/2023 - ]: Procedure

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  1. INSPECT VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) 

    Refer to INSPECTION [11/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM). Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) - ECM) 
    1. Disconnect the vacuum switching valve (for active control engine mount system) connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (for TMMC Made)

      Tester Connection Condition Specified Condition
      B13-2 (ACM) or B94-44 (ACM) - Other terminals Always 10 kΩ or higher

      Standard Resistance (for TMC Made)

      Tester Connection Condition Specified Condition
      B13-2 (ACM) or B50-44 (ACM) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR