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Home >> Acura >> 2013 >> TL Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Throttle Control System >> DTC Troubleshooting >> DTC P1683: Throttle Valve Default Position Spring Performance Problem
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DTC P1683: Throttle Valve Default Position Spring Performance Problem

CAUTION: Do not insert your fingers into the installed throttle body when you turn the ignition switch to ON (II)/press the engine start/stop button, or while the ignition switch is in ON (II)/vehicle in ON mode. If you do, you will seriously injure your fingers if the throttle valve is activated.
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  2. Clear the DTC with the HDS.
  3. Start the engine. Hold the engine speed at 3, 000 RPM without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
  4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, and wait 10 seconds.
  5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  6. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P1683 indicated? 

    YES  - Go to step 7.

    NO  - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the ECM/PCM. ■

  7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  8. Disconnect the intake air duct from the throttle body.
  9. Push the throttle valve closed as shown in illustration below.
    Fig 1: Pushing Throttle Valve Closed
    G08069624Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Release the throttle valve.

    Does the throttle valve return? 

    YES  - Clean the throttle body (see THROTTLE BODY CLEANING ), then go to step  12 and recheck. If DTC P1683 is indicated, go to step 11.

    NO  - Go to step 11.

  11. Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).
  12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  13. Reset the ECM/PCM with the HDS.
  14. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
  15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, and wait 10 seconds.
  16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  17. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P1683 indicated? 

    YES  - Check for poor connections or loose terminals at the throttle body and the ECM/PCM, then go to step  1.

    NO  - Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting. ■

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