2010 Cadillac Truck Escalade RWD V8-6.2L Page 2470

2010 Cadillac Truck Escalade RWD V8-6.2L Page 2470

- Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

DTC P2101

- Throttle Actuator Position Performance

DTC P2119

- Throttle Closed Position Performance

DTC P2176

- Minimum Throttle Position Not Learned

Diagnostic Fault Information

Circuit/System Description

The engine control module (ECM) controls the throttle valve by applying a varying voltage to the control circuits of the throttle actuator control

(TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the throttle position (TP) sensors 1

and 2 to determine the actual throttle valve position.

Conditions for Running the DTC

P1516 and P2101

* DTC P0606 and P1682 is not set.

* The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.

* The engine is running or the following conditions are met:

- The engine is not running.

- The ignition voltage is greater than 11 V.

- The TAC system is not in the Battery Saver mode.

- The ECM is commanding the throttle.

- The ECM has learned the minimum throttle position.

* DTC P1516 and P2101 run continuously when the above conditions are met.

P2119

* The ignition is ON.

* The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.

* The TP sensor 1 voltage is greater than 1.7 V

* The ECM is not commanding the throttle blade.

* DTC P2119 runs continuously when the above conditions are met.

P2176

* DTCs P0120, P0121, P0122, P0123, P0220, P0222, P0223, or P1682 is not set.

* The ignition is ON.

* The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.

* The ECM enable the minimum throttle learn procedure.

* DTC P2176 run continuously when the above conditions are met.

Conditions for Setting the DTC

P1516

The actual throttle position does not match the predicted throttle position for greater than 1 s.

P2101

The actual throttle position does not match the predicted throttle position for greater than 1 s.

P2119

The ECM detects that the throttle blade did not return to the default position when the TAC motor is de-energized for greater than 1 s.

P2176

The ECM detects that both throttle position (TP) sensors were greater than a predetermined voltage during the minimum throttle learn procedure for