SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P210018, P210019, P210A18, P210A19

DTC Code DTC Name
P210018 Throttle Actuator "A" Control Motor Circuit Current Below Threshold
P210019 Throttle Actuator "A" Control Motor Circuit Current Above Threshold
P210A18 Throttle Actuator "B" Control Motor Circuit Current Below Threshold
P210A19 Throttle Actuator "B" Control Motor Circuit Current Above Threshold

DESCRIPTION

The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears.

The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body with motor assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P210018 Throttle Actuator "A" Control Motor Circuit Current Below Threshold

Both of the following conditions are met for 2 seconds or more (1 trip detection logic):


  • The throttle actuator (bank 1) drive duty cycle is 80% or higher.

  • The throttle actuator (bank 1) current is less than 0.5 A.

  • Open or short in throttle actuator (bank 1) circuit

  • Throttle actuator (bank 1)

  • ECM

 Comes on DTC stored SAE: P2102
P210019 Throttle Actuator "A" Control Motor Circuit Current Above Threshold

Either of the following conditions is met (1 trip detection logic):


  • A motor driver IC (bank 1) high current limiter monitor input malfunction is detected.

  • A motor driver IC (bank 1) high current inhibit signal is received.

  • Open or short in throttle actuator (bank 1) circuit

  • Throttle actuator (bank 1)

  • Throttle valve (bank 1)

  • Throttle body with motor assembly (bank 1)

  • ECM

 Comes on DTC stored SAE: P2103
P210A18 Throttle Actuator "B" Control Motor Circuit Current Below Threshold

Both of the following conditions are met for 2 seconds or more (1 trip detection logic):


  • The throttle actuator (bank 2) drive duty cycle is 80% or higher.

  • The throttle actuator (bank 2) current is less than 0.5 A.

  • Open or short in throttle actuator (bank 2) circuit

  • Throttle actuator (bank 2)

  • ECM

 Comes on DTC stored SAE: P210C
P210A19 Throttle Actuator "B" Control Motor Circuit Current Above Threshold

Either of the following conditions is met (1 trip detection logic):


  • A motor driver IC (bank 2) high current limiter monitor input malfunction is detected.

  • A motor driver IC (bank 2) high current inhibit signal is received.

  • Open or short in throttle actuator (bank 2) circuit

  • Throttle actuator (bank 2)

  • Throttle valve (bank 2)

  • Throttle body with motor assembly (bank 2)

  • ECM

 Comes on DTC stored SAE: P210D

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 operate properly (for example, it is stuck open), the ECM will determine there is a malfunction, illuminate the MIL and store a DTC.

MONITOR STRATEGY

Required Sensors/Components Throttle actuator (throttle body with motor assembly)
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

B0069R0E34

  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the engine switch off and wait for at least 30 seconds.

  6. Turn the engine switch on (IG) [A].

  7. Turn the GTS on.

  8. Start the engine.

  9. With the vehicle stationary, fully depress the accelerator pedal and quickly release it [B].

  10. Check that 16 seconds or more have elapsed since the accelerator pedal was first depressed.

  11. Enter the following menus: Powertrain / Engine / Trouble Codes [C].

  12. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  14. Input the DTC: P210018, P210019, P210A18 or P210A19.

  15. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE, perform steps [B] through [C] again.

FAIL-SAFE

When these DTCs are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 8° throttle valve opening angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the engine switch is turned off.

WIRING DIAGRAM

B006AEOE01

CAUTION / NOTICE / HINT

Tech Tips


  • The throttle actuator current (Throttle Motor Current and Throttle2 Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty Ratio (Open), Throttle Motor Duty Ratio (Close), Throttle2 Throttle Motor Duty Ratio (Open) and Throttle2 Throttle Motor Duty Ratio (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.

  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transmission.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

    DTC Suspected Area
    P210018, P210019 Bank 1
    P210A18, P210A19 Bank 2

PROCEDURE


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


    1. Inspect the throttle body with motor assembly.

      Click here

      Tech Tips


      • When cleaning or replacing one throttle body with motor assembly, clean the other throttle body with motor assembly.

        Click here

      • 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 throttle body with motor assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D9-6 (M+) - D1-3 (M+) Always Below 1 Ω
      D9-5 (M-) - D1-4 (M-) Always Below 1 Ω
      D37-6 (M2+) - D1-22 (M2+) Always Below 1 Ω
      D37-5 (M2-) - D1-23 (M2-) Always Below 1 Ω
      D9-6 (M+) or D1-3 (M+) - Body ground and other terminals Always 10 kΩ or higher
      D9-5 (M-) or D1-4 (M-) - Body ground and other terminals Always 10 kΩ or higher
      D37-6 (M2+) or D1-22 (M2+) - Body ground and other terminals Always 10 kΩ or higher
      D37-5 (M2-) or D1-23 (M2-) - 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


      • When cleaning or replacing one throttle body with motor assembly, clean the other throttle body with motor assembly.

        Click here

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

        Click here

      Result
      Proceed to
      OK
      NG

    NG

    REMOVE FOREIGN MATTER 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


      • When cleaning or replacing one throttle body with motor assembly, clean the other throttle body with motor assembly.

        Click here

      • 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