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Home >> Lexus >> 2010 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0351-U0101) & Circuit Tests) >> SFI System >> DTC P2118: Throttle Actuator Control Motor Current Range / Performance >> Procedure
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DTC P2118: Throttle Actuator Control Motor Current Range / Performance: Procedure

  1. READ VALUE USING TECHSTREAM (+BM VOLTAGE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / +BM Voltage.
    5. Read the value displayed on the Techstream.

      Standard Voltage

      11 to 14 V

    NG → See step   2 

    OK → See step   3 

  2. CHECK HARNESS AND CONNECTOR (ECM - BATTERY, BODY GROUND) 
    Fig 1: Identifying E2 And E3 Terminal Connectors
    GTY272879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the ECM connectors.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      E2-5 (+BM) - Body ground Always 11 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E2-4 (ME01) - Body ground Always Below 1 Ω
      E3-7 (E1) - Body ground

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  3. CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS 
  4. REPLACE ECM. Refer to  REMOVAL