2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2867
瀚慖f greater than the specified range, test the APP sensor 1 and 2 signal circuits terminals B and E for a short to voltage. If the circuit tests
normal, replace the ECM.
5. Install a 3 A fused jumper wire between the APP sensor 1 signal circuit terminal E and the 5-volt reference circuit terminal D. Verify the scan
tool APP sensor 1 voltage parameter is greater than 4.8 V.
瀚慖f less than the specified range, test the APP sensor 1 signal circuit for a short to ground or an open/high resistance. If the circuit tests
normal, replace the ECM.
6. Install a 3 A fused jumper wire between the APP sensor 2 signal circuit terminal B and the 5-volt reference circuit terminal D. Verify the scan
tool APP sensor 2 voltage parameter is greater than 4.8 V.
瀚慖f less than the specified range, test the APP sensor 2 signal circuit for an open/high resistance or short to ground. If the circuit tests
normal, replace the ECM.
7. If all circuits and connections test normal, test or replace the Accelerator Pedal Position Sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Accelerator Pedal Position Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Accelerator Pedal Position
Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P2176
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
