DTC Troubleshooting

DTC Troubleshooting: P1683

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 Initial Inspection and Diagnostic Overview.

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 (in P or N) 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 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.






10. Release the throttle valve.

Does the throttle valve return?

YES -

Clean the throttle body Procedures, then go to step 12 and recheck. If DTC P1683 is still indicated, go to step 11.

NO -

Go to step 11.

11. Replace the throttle body Removal and Replacement.

12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

13. Reset the PCM with the HDS.

14. Do the PCM idle learn procedure 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 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.