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Home >> Acura >> 2009 >> TSX Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Throttle Control System (4-CYL) >> 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) or while the ignition switch is ON (II) 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)
  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), and wait 10 seconds
  5. Turn the ignition switch to ON (II)
  6. Check for Temporary DTCs or 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)
  8. Disconnect the intake air duct from the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION )
  9. Push the throttle valve closed as shown
    Fig 1: Pushing Throttle Valve Closed
    G05992399Courtesy 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

    NO  -Go to step 11

  11. Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION )
  12. Turn the ignition switch to ON (II)
  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), and wait 10 seconds
  16. Turn the ignition switch to ON (II)
  17. Check for Temporary DTCs or DTCs with the HDS

    Is DTC P1683 indicated?

    YES  -If the throttle body was cleaned, go to step  11 If the throttle body was replaced, 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 Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting

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