Friday, October 23, 2020

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1764

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1764



Conditions for Setting the DTC



P1516



The indicated throttle position does not match the predicted throttle position for greater than 0.5 s.



P2101



The indicated throttle position does not match the predicted throttle position for greater than 0.3 s.



P2119



The ECM determines that the throttle blade did not return to the rest position within 0.720 s.



P2176



The difference between the predicted and the actual throttle position is greater than a calibrated amount for greater than 2 s.



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.



Diagnostic Aids



* If the Throttle Sweep Test is not available on the scan tool, observe the scan tool TAC Motor parameter while performing the following tests:



- Slowly depress the accelerator pedal to WOT and then slowly return the pedal to closed throttle. Repeat the procedure several times.



- Rapidly depress the accelerator pedal from the rest position to the wide open throttle position (WOT) and release pedal. Repeat the



procedure several times.



The TAC Motor parameter should display Enabled. If Disabled is displayed, continue diagnosis in Circuit/System Testing.



* Inspect for a condition in which the throttle valve may have been held open. For example, ice may have formed in the throttle bore causing



the throttle valve not to close.



* A high resistance condition on the throttle position and throttle actuator control circuits could cause a DTC to set.



* A low battery condition may cause a DTC to set.



Reference Information



Schematic Reference



Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics



(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



Throttle Actuator Control (TAC) System Description (See: Powertrain Management/Computers and Control Systems/Description and



Operation/Throttle Actuator Control (TAC) System Description)



Electrical Information Reference



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit



Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

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