Throttle Actuator Control Motor Control Circuit
Table of contents
P2100 CADILLAC Possible Causes
- Faulty Throttle Body Assembly
- Throttle Body Assembly harness is open or shorted
- Throttle Body Assembly circuit poor electrical connection
How do I fix code P2100 CADILLAC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2100 CADILLAC code
The cost of diagnosing the P2100 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2100 CADILLAC Description
The Engine Control Module (ECM) is the control center for the throttle body Throttle Actuator Control (TAC) system. The ECM determines the driver’s intent and then calculates the appropriate throttle response. The ECM achieves throttle positioning by providing a pulse width modulated voltage to the throttle body (TAC) motor. The throttle body (TAC) motor system uses the following circuits: Throttle body (TAC) motor control 1 and Throttle body (TAC) motor control 2.
Two processors are also used to monitor the throttle body (TAC) motor system data. Both processors are located within the ECM. Both processors monitor each other’s data to verify that the indicated throttle position is correct.
The Diagnostic Trouble Code (DTC) will set when the ECM detects the output circuit for the TAC motor is open, shorted to ground, or shorted to a voltage. The condition exists for greater than 1 s.