2010 Cadillac Truck SRX FWD V6-3.0L Page 1885
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
* The ignition voltage is greater than 6 V and reduced power is not active.
* The engine is running.
* DTCs P1516 runs continuously when the above conditions are met.
P2101
* DTC P1682 not set.
* The engine is running.
* The ECM has learned the minimum throttle position.
* The ignition voltage is greater than 6 V and reduced power is not active.
* DTCs P2101 run continuously when the above conditions are met.
P2119
* DTCs P0121, P0122, P0123, P0222, P0223, P0641, P0651, P0697, P06A3, or P2135 are not set.
* The ignition is ON.
* The ignition voltage is greater than 6 V.
* DTC P2119 runs continuously when the above conditions are met.
P2176
* DTCs P0068, P0122, P0123, P0222, P0223 are not set.
* The ignition is ON.
* The ignition voltage is greater than 6 V and reduced power is not active.
* DTC P2176 runs continuously when the above conditions are met.
Conditions for Setting the DTC
P1516
The ECM detect an inability to maintain a steady state throttle position for 4 s.
P2101
The ECM detects the difference between the actual throttle position, and the desired position is greater than 7 percent.
P2119
* The ECM detects that the throttle blade did not return to the default position, during power down, within a calibrated amount of time.
or
* The ECM detects the throttle control is driving the throttle in the incorrect direction or exceeds the reduced power limit.
P2176
The ECM detects that both throttle position sensors were greater than 0.95 V during the minimum learn procedure.
Action Taken When the DTC Sets
* DTCs P1516, P2101, and P2176 are type A DTCs.
* DTC P2119 is a type C DTC.
Conditions for Clearing the MIL/DTC
* DTCs P1516, P2101, and P2176 are type A DTCs.
* DTC P2119 is a type C DTC.
