SFI SYSTEM, Diagnostic DTC:P2103

DTC Code DTC Name
P2103 Throttle Actuator "A" Control Motor Circuit High

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2103 Throttle Actuator "A" Control Motor Circuit High

DTC Detection Condition


    Enable Criteria

  • None


    Malfunction Criteria

  • H-bridge drive chip diagnostic


    Diagnostic Mask

  • -


    Monitor

  • Continuous


    Potential failure modes

  • Throttle actuator control motor short to supply voltage

  • Short in throttle actuator circuit

  • Wire harness or connector

  • Throttle actuator (throttle body with motor assembly)

  • Throttle valve

  • Throttle body with motor assembly

  • ECM

 Comes on DTC stored

MONITOR DESCRIPTION

The ECM monitors the electrical current through the electronic actuator, and detects malfunctions and open circuits in the throttle actuator based on this value. If the current is outside the standard range, the ECM determines that there is a malfunction in the throttle actuator. In addition, if the throttle valve does not function properly (for example, stuck on), the ECM determines that there is a malfunction. The ECM then illuminates the MIL and stores the DTC.

WIRING DIAGRAM

Refer to DTC P2100.

Click here

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips


  • The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the GTS. However, the ECM shuts off the throttle actuator current when the electronic throttle control system malfunctions.

  • Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR)


    1. Inspect the throttle body with motor assembly.

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (THROTTLE BODY WITH MOTOR ASSEMBLY - ECM)


    1. Disconnect the B29 throttle body with motor assembly connector.

    2. Disconnect the B142 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      B29-1 (M+) - B142-48 (M+) Always Below 1 Ω
      B29-2 (M-) - B142-35 (M-) Always Below 1 Ω
      B29-1 (M+) or B142-48 (M+) - Body ground and other terminals Always 10 kΩ or higher
      B29-2 (M-) or B142-35 (M-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)


    1. Check for foreign matter between the throttle valve and the housing.

      OK
      No foreign matter between the throttle valve and housing.

      Tech Tips

      Perform "Inspection After Repair" after cleaning the throttle body with motor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY WITH MOTOR ASSEMBLY

    OK

  4. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (THROTTLE VALVE)


    1. Check if the throttle valve opens and closes smoothly.

      OK
      Throttle valve opens and closes smoothly.

      Tech Tips

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY Click here