DTC Troubleshooting

DTC Troubleshooting: P2101

DTC P2101: Throttle Actuator System Malfunction

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 in 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. Reading and Clearing Diagnostic Trouble Codes

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Do the ETCS TEST in the INSPECTION MENU with the HDS.

4. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2101 indicated?
YES - Go to step 7.

NO - Go to step 5.


5. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED

- VSS

- APP SENSOR

6. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2101 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 throttle actuator control module, then clean the throttle body. Procedures


7. Turn the ignition switch to LOCK (0).

8. Disconnect the intake air duct from the throttle body.

9. Turn the ignition switch to ON (II).

10. Clear the DTC with the HDS.

11. Do the ETCS TEST in the INSPECTION MENU with the HDS.

12. Visually check the throttle valve operation.

Does the throttle valve operate smoothly?
YES - Clean the throttle body, Procedures then go to step 22 and recheck. If DTC P2101 is indicated, go to step 20.

NO - Go to step 13.


13. Turn the ignition switch to LOCK (0).

14. Disconnect the throttle body 6P connector.

15. Disconnect the C251 connector (13P) between the PCM subharness and the throttle actuator control module subharness.

16. Connect throttle body 6P connector terminals No. 5 and No. 6 with a jumper wire.






17. Check for continuity between C251 connector (13P) terminals No. 6 and No. 13.

Is there continuity?
YES - Go to step 18.

NO - Repair open in the wire between the throttle body and the C251 connector (motor drive lines), then go to step 22.






18. Disconnect the throttle actuator control module 16P connector. Service and Repair

19. Check for continuity between throttle actuator control module 16P connector terminal No. 1 and C251 connector (13P) terminal No. 13, and then between throttle actuator control module 16P connector terminals No. 8 and C251 connector (13P) terminal No. 6.

Is there continuity?
YES - Go to step 28.

NO - Repair open in the wires between the throttle actuator control module and the C251 connector (motor drive lines), then go to step 22.






20. Turn the ignition switch to LOCK (0).

21. Replace the throttle body. Removal and Replacement

22. Reconnect all connectors.

23. Turn the ignition switch to ON (II).

24. Reset the PCM with the HDS.

25. Do the PCM idle learn procedure. PCM Idle Learn Procedure

26. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED

- VSS

- APP SENSOR

27. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2101 indicated?
YES - Check for poor connections or loose terminals at the throttle body and the throttle actuator control module, then clean the throttle body, Procedures and go to step 1.

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


28. Reconnect all connectors.

29. Update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM. Reading and Clearing Diagnostic Trouble Codes

30. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2101 indicated?
YES - Check for poor connections or loose terminals at the throttle body and the throttle actuator control module. If the PCM was updated, substitute a known-good PCM, Reading and Clearing Diagnostic Trouble Codes then recheck. If the PCM was substituted, go to step 1.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. Service and Repair If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.