Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P2101: Control Module Throttle Actuator Position PerformanceCircuit/System Description
The commanded throttle position is compared to the actual throttle position based on the accelerator pedal position and possibly other limiting factors. Both values should be within a calibrated range of each other. The powertrain control module (PCM) continuously monitors the commanded and the actual throttle positions. If the commanded and the actual positions are not within a calibrated range of each other, DTC P2101 sets.
Conditions for Running the DTC
| • | The ignition is in the Crank or Run position. |
| • | The system voltage is more than 5.23 volts. |
| • | The system is not in Battery Saver mode. |
| • | The communication between the TAC module and the PCM must be valid. |
| • | The DTC runs continuously when the above conditions are met. |
Conditions for Setting the DTC
| • | The TAC module detects the commanded and the actual throttle positions are not within a calibrated range of each other. |
| OR |
| • | The TAC module or the PCM can not determine the throttle position. |
Action Taken When the DTC Sets
| • | DTC P2101 is a Type A DTC. |
| • | The control module commands the TAC system to operate in Reduced Engine Power mode. |
Conditions for Clearing the DTC
DTC P2101 is a Type A DTC.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Throttle Actuator Control (TAC) System Description
Electrical Information Reference
| • | Circuit Testing |
| • | Wiring Repairs |
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- If DTC P2108 is also set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
- If DTC U0107 only is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
- Ignition OFF for 30 seconds.
- Ignition ON, observe the TP Sensor 1 and TP Sensor 2 parameters while moving the accelerator pedal to the fully applied position, and back to the at-rest position. The TP Sensor parameters should increase to 100 percent as the accelerator pedal is moved to the fully applied position, and back tot he at-rest position as the accelerator pedal is released.
- Operate the vehicle within the Conditions for Running the DTC, or within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
Test the ETC ignition 1 voltage circuit for proper continuity.
| ⇒ | If the circuit has proper continuity, replace the throttle body assembly. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
