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Home >> Lexus >> 2010 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> System >> Active Control Engine Mount System (Diagnostic Codes & Circuit Tests) >> Active Control Engine Mount System >> DTC P16A1: Linear Solenoid Circuit or G Sensor Circuit >> Procedure
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DTC P16A1: Linear Solenoid Circuit or G Sensor Circuit: Procedure

  1. PERFORM ACTIVE TEST BY TECHSTREAM (CHECK THE E-ACM) 
    1. Connect Techstream to DLC3.
    2. Start the engine and turn the tester ON.
    3. Enter the following menus: Powertrain / E-ACM / Active Test.
    4. Check if the active mount control actuator operates.

      Standard

      The active mount control actuator operates normally.

    OK → See step   4 

    NG: Go to next step 

  2. CHECK FRONT ENGINE MOUNTING INSULATOR (ACTIVE CONTROL ENGINE MOUNT ACTUATOR) 
    1. Disconnect the B10 active control mount actuator connector.
      Fig 1: Measuring Resistance Between ACT+ & ACT- Terminals Of Actuator Connector
      GTY147399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance between the ACT+ and ACT- terminals of the actuator connector.

      Standard resistance

      Tester Connection Specified Value
      ACT+ (B10-2) - ACT- (B10-1) 0.73 to 0.77 Ω
      ACT+ (B10-2) - Body ground 1 MΩ or higher
      ACT- (B10-1) - Body ground 1 MΩ or higher

    NG → REPLACE FRONT ENGINE MOUNTING INSULATOR 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (ECU - ACTUATOR) 
    1. Disconnect the A9 active control engine mount ECU connector and B10 active control engine mount actuator connector.
      Fig 2: Identifying ACM Actuator Connector Terminal (Front View)
      GTY147306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Specified Value
      ACT+ (A9-1) - ACT+ (B10-2) Below 1 Ω
      ACT- (A9-3) - ACT- (B10-1) Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → REPLACE ACTIVE CONTROL ENGINE MOUNT ECU 

  4. CHECK ACCELERATION SENSOR. Refer to  DTC P16A0: G Sensor Circuit