DTC P2100: Throttle Actuator Control (TAC) Motor Circuit/Open

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

P2100 - THROTTLE ACTUATOR CONTROL (TAC) MOTOR CIRCUIT/OPEN

Description:	A powertrain control module (PCM) fault flag is set indicating the motor circuit is open, and may require cycling the key.
Possible Causes:	TAC motor has an open winding. TAC motor is damaged. TAC motor harness is open. TAC motor harness is shorted to PWR. TAC motor harness circuits are shorted together. TAC motor harness connector is unplugged.
Diagnostic Aids:	A TAC motor circuit PID reading may indicate a fault, if available.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to Pinpoint Test DV .