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Home >> Acura >> 2004 >> TL Standard >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Throttle Control System >> DTC Troubleshooting >> DTC P2118: Throttle Actuator Current Circuit Range/Performance Problem

DTC P2118: Throttle Actuator Current Circuit Range/Performance Problem

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  1. Disconnect the throttle actuator control module 16P connector.
  2. Measure resistance between throttle actuator control module 16P connector terminals No. 1 and No. 8
    Fig 1: Measuring Resistance Between Throttle Actuator Control Module 16P Connector Terminals
    G03659565Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 1.0Ω or less? 

    1. YES  - Go to step  3.
    2. NO  - Substitute a known-good throttle actuator control module (see THROTTLE ACTUATOR CONTROL MODULE REPLACEMENT ), then go to step  7 and recheck. If DTC P2118 is not indicated, (see THROTTLE ACTUATOR CONTROL MODULE REPLACEMENT  ), then go to step  7.
  3. Disconnect the throttle body 6P connector.
  4. At the throttle body side, measure resistance between throttle body 6P connector terminals No. 5 and No. 6 with the throttle fully closed.
    Fig 2: Measuring Resistance Between Throttle Body 6P Connector Terminals No. 5 & No. 6
    G03659566Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 1.0 Ω or less? 

    1. YES  - Go to step  5.
    2. NO  - Repair short in the wires between the throttle body and the throttle actuator control module (motor drive lines), then go to step  6.
  5. Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).
  6. Reconnect the throttle body 6P connector.
  7. Reconnect the throttle actuator control module 16P connector.
  8. Turn the ignition switch ON (II).
  9. Reset the ECM/PCM with the HDS.
  10. Do the ECM/PCM IDLE LEARN PROCEDURE ).
  11. Turn the ignition switch OFF.
  12. Turn the ignition switch ON (II).
  13. Slowly press the accelerator pedal to the floor.
  14. Check for Temporary DTCs or DTCs with the HDS.

    Are any Temporary DTCs or DTCs indicated? 

    1. YES  - If DTC P2118 is indicated, check for poor connections or loose terminals at the throttle body and the throttle actuator control module, then go to step  1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
    2. NO  - Troubleshooting is complete.
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