DTC P2101: Throttle Actuator System Malfunction
- Clear the DTC with the HDS.
- Do the ETCS TEST in the INSPECTION MENU with the HDS.
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2101 indicated?
YES - Go to step 6.
NO - Go to step 4.
- Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED
- VSS
- APP SENSOR
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2101 indicated?
YES - Go to step 6.
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 (see THROTTLE BODY CLEANING ).
- Turn the ignition switch OFF.
- Disconnect the intake air duct from the throttle body.
- Turn the ignition switch ON (II).
- Clear the DTC with the HDS.
- Do the ETCS TEST in the INSPECTION MENU with the HDS.
- Visually check the throttle valve operation,NOTE: Be careful not to pinch your fingers during the check.
Does the throttle valve operate smoothly?
YES - Clean the throttle body (see THROTTLE BODY CLEANING ), then go to step 21 and recheck. If DTC P2101 is indicated, go to step 19.
NO - Go to step 12.
- Turn the ignition switch OFF.
- Disconnect the throttle body 6P connector.
- Disconnect the C251 connector (13P) between the PCM subharness and the throttle actuator control module subharness.
- Connect throttle body 6P connector terminals No. 5 and No. 6 with a jumper wire.
- Check for continuity between C251 connector (13P) terminals No. 6 and No. 13.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Go to step 17.
NO - Repair open in the wire between the throttle body and the C251 connector (motor drive lines), then go to step 21.
- Disconnect the throttle actuator control module 16P connector (see THROTTLE ACTUATOR CONTROL MODULE REPLACEMENT ).
- Check for continuity between throttle actuator control module 16P connector terminals No. 1 and No. 8 and C251 connector (13P) terminals No. 6 and No. 13 individually.Fig 3: Checking Continuity Between Throttle Actuator Control Module 16P Connector Terminals 1 And 8 And C251 (13P) Terminals 6 And 13
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Go to step 27.
NO - Repair open in the wires between the throttle actuator control module and the C251 connector (motor drive lines), then go to step 21.
- Turn the ignition switch OFF.
- Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).
- Reconnect all connectors.
- Turn the ignition switch ON (II).
- Reset the PCM with the HDS.
- Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
- Test-drive the vehicle for several minutes in the range of the recorded freeze data.
- Check for Temporary DTCs or 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 (see THROTTLE BODY CLEANING ), and go to step 1.
NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.
- Reconnect all connectors.
- Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
- Check for Temporary DTCs or 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 (see SUBSTITUTING THE PCM ), 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 (see PCM REPLACEMENT ). If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.