2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1843

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1843

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit/connections test

normal, replace the K20 ECM.

8. If all circuits/connections test normal, test or replace the B107 accelerator pedal assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Accelerator Pedal with Position Sensor Assembly Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Accelerator

Pedal/Service and Repair/Accelerator Pedal with Position Sensor Assembly Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement,

programming, and setup

P2176

DTC P2176 (Without LF1, LFW)

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 P2176

- Minimum Throttle Position Not Learned

Circuit/System Description

The engine control module (ECM) controls the throttle valve by applying a varying voltage to the throttle actuator control (TAC) motor. The ECM

monitors the actual throttle valve position using throttle position sensor 1 and 2.

Conditions for Running the DTC

* The engine speed is less than 40 RPM.

* The vehicle speed is 0 km/h (0 mph).

* The engine coolant temperature (ECT) is between 5-101掳C (41-214掳F).

* The intake air temperature (IAT) is between 5-144掳C (41-291掳F).

* The accelerator pedal position (APP) sensor angle is less than 15 percent.

* The ignition voltage is greater than 10 volts.

* DTC P2176 runs once per ignition cycle, when the ignition is ON and the above conditions are met for greater than 1 second.

Conditions for Setting the DTC

* The ECM detects that the TP sensor 1 voltage is not between 4.12-4.55 V after the throttle learn procedure, with the throttle at rest.

* The ECM detects that the TP sensor 2 voltage is not between 0.34-0.99 V after the throttle learn procedure, with the throttle at rest.

* The minimum throttle position is not learned after an ECM replacement.

* Either condition exists fro greater than 1 second, or a cumulative 10 seconds.

Action Taken When the DTC Sets

DTC P2176 is a Type A DTC.

Conditions for Clearing the DTC

DTC P2176 is a Type A DTC.

Reference Information

Schematic Reference

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

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

Connector End View Reference