2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2434
- Water intrusion
- Exhaust leak
- Damaged, restricted, modified or enhanced exhaust system-Refer to Symptoms - Engine Exhaust (See: Engine, Cooling and
Exhaust/Exhaust System/Testing and Inspection/Symptoms - Engine Exhaust).
* Inspect the engine mechanical for items that could alter the air flow into the combustion chamber. Refer to Symptoms - Engine Mechanical (
See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Mechanical).
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
P1516
DTC P1516, P2101, P2119, or P2176
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P1516
- 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.
