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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) (7 Of 8) >> SFI System >> DTC P2118: Throttle Actuator Control Motor Current Range / Performance [10/2015 - ] >> Procedure

DTC P2118: Throttle Actuator Control Motor Current Range / Performance [10/2015 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (+BM VOLTAGE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Data List / +BM Voltage.

      Powertrain > Engine and ECT > Data List 

      Tester Display
      +BM Voltage
    5. Read the value displayed on the Techstream.

      Result

      Result Proceed to
      Less than 4 V A
      11 to 16 V B

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [10/2015 - ] 

    Result: 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (ECM ASSEMBLY - AUXILIARY BATTERY, BODY GROUND) 
    1. Disconnect the ECM assembly connector.
    2. Measure the voltage according to the value (s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      D1-30 (+BM) - Body ground Always 11 to 16 V
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D1-29 (ME01) - Body ground Always Below 1 Ω
      D1-53 (E1) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM ASSEMBLY. Refer to  REMOVAL [10/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR