2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1999

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1999

P0220, P0222, P0223, P0335, P0336, P0606, P0641, P0651, P1516, P2101, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, and

P2176 are not set.

* When DTC P0315 is set, the engine speed must be more than 1,000 RPM.

* Engine run time is more than 2 crankshaft revolutions.

* The engine speed is between 375-5,600 RPM.

* The ignition voltage is between 9-18 volts.

* The engine coolant temperature (ECT) is between -7 and +130掳C (+19 and +266掳F).

* When the startup ECT is colder than -7掳C (+19掳F), this diagnostic will be delayed until the ECT is warmer than +21掳C (+69掳F).

* The fuel level is more than 10 percent.

* The ECM is not in fuel shut-off, or decel fuel cut-off mode.

* The electronic brake control module (EBCM) and the traction control system (TCS) are not active or detecting rough road.

* An automatic transmission shift with a throttle position more than 95 percent is not occuring.

* The power management is not active.

* Excessive drive wheel slip is not detected.

* The power take-off (PTO) is disabled, where applicable.

* The cylinder deactivation is not in progress, where applicable.

* DTCs P0300-P0308 run continuously when the above conditions are met.

Conditions for Setting the DTC

DTC P0300

The ECM is detecting a crankshaft speed change indicating a random misfire is occuring that exceeds mandated emission level standards or is at

catalytic converter damaging levels.

DTC P0301, P0302, P0303, P0304, P0305, P0306, P0307, or P0308

The ECM is detecting a crankshaft speed change indicating a single cylinder misfire is occuring that exceeds mandated emission level standards or

is at catalytic converter damaging levels.

Action Taken When the DTC Sets

* DTCs P0300-P0308 are Type B DTCs.

* When the MIL is flashing the fuel injector may be disabled for the misfiring cylinder to protect the catalytic converter.

* Depending on the conditions that set the DTC, the engine may go into Open Loop.

Conditions for Clearing the MIL/DTC

* DTCs P0300-P0308 are Type B DTCs.

* The DTC must run and pass under the same operating conditions that were present when the DTC failed.

Diagnostic Aids

* Ensure that each fuel injector is connected to the proper fuel injector harness connector.

* A misfire may only occur when the engine is operating under a load or when the engine is cold.

* A high resistance condition on any ignition control (IC) circuit can cause an engine misfire P0300-P0308 DTC to set without setting an IC

circuit P0351-P0358 DTC.

* This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test (See:

Starting and Charging/Testing and Inspection/Component Tests and General Diagnostics/Battery Inspection/Test).

* A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect the following for possible sources of

vibration:

- A tire or wheel that is out of round or balance

- Variable thickness brake rotors

- An unbalanced drive shaft

- Certain rough road conditions

- A damaged accessory drive component or belt

- A damaged reluctor wheel

- The Crankshaft Position System Variation Learn procedure may need to be performed.

Reference Information

Schematic Reference

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

Connector End View Reference

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

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1897

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1897

* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and

programming.

* Manual Shift Shaft Position Switch Replacement (See: Powertrain Management/Computers and Control Systems/Sensors and Switches -

Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/2ML70 - Automatic Transmission).

* Transmission Control Wiring Harness Extension Harness Removal (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/5. Transmission Control Wiring Harness Extension

Harness Removal).

P183B

DTC P181C-P181F, P183A-P183E, P184A, or P184B

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 Descriptor

DTC P181C

- Internal Mode Switch 2 R1 Circuit Low Voltage

DTC P181D

- Internal Mode Switch 2 R1 Circuit High Voltage

DTC P181E

- Internal Mode Switch 2 R2 Circuit Low Voltage

DTC P181F

- Internal Mode Switch 2 R2 Circuit High Voltage

DTC P183A

- Internal Mode Switch 2 D1 Circuit Low Voltage

DTC P183B

- Internal Mode Switch 2 D1 Circuit High Voltage

DTC P183C

- Internal Mode Switch 2 D2 Circuit Low Voltage

DTC P183D

- Internal Mode Switch 2 D2 Circuit High Voltage

DTC P183E

- Internal Mode Switch 2 - Invalid Range

DTC P184A

- Internal Mode Switch 2 S Circuit Low Voltage

DTC P184B

- Internal Mode Switch 2 S Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1111

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1111

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

programming

P0140

DTC P0137, P0138, or P0140 (Without LF1)

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 P0137

- HO2S Circuit Low Voltage Sensor 2

DTC P0138

- HO2S Circuit High Voltage Sensor 2

DTC P0140

- HO2S Circuit Insufficient Activity Sensor 2

Diagnostic Fault Information

Typical Scan Tool Data

Circuit Description

The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding

air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the

HO2S signal voltage while calculating the air-to-fuel ratio. The control module supplies the HO2S with a reference, or bias voltage of about 450

mV. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0-1,000 mV. This voltage will fluctuate above

and below the bias voltage. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control

module uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases above bias voltage toward 1,000 mV indicates a

rich fuel mixture. An HO2S voltage that decreases below bias voltage toward 0 mV indicates a lean fuel mixture.

The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed

Loop earlier and the control module to calculate the air-to-fuel ratio sooner.

Conditions for Running the DTCs

P0137

* DTC P0117 or P0118 is not set.

* The HO2S 2 is at operating temperature for greater than 90 seconds.

* The engine is operating for greater than 5 seconds.

* The ignition voltage is greater than 10 volts.

* The engine coolant temperature is less than 40掳C (104掳F) at start-up and the engine coolant temperature was greater than 60掳C (140掳F) when

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1806

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1806

* Control Module References (See: Testing and Inspection/Programming and Relearning) for Engine Control Module replacement, setup, and

programming

P2094

DTC P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 (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 P0010

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 1

DTC P0013

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Bank 1

DTC P0020

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2

DTC P0023

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2

DTC P2088

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

DTC P2089

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 1

DTC P2090

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

DTC P2091

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 1

DTC P2092

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 2

DTC P2093

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 2

DTC P2094

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 2

DTC P2095

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 2

Circuit/System Description

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is

operating. The Camshaft Position Actuator Solenoid Valve signal from the ECM is pulse width modulated (PWM). The ECM controls the

Camshaft Position Actuator Solenoid Valve duty cycle by controlling the amount of solenoid valve ON time. The Camshaft Position Actuator

Solenoid Valve controls the advance or the retard of each camshaft. The Camshaft Position Actuator Solenoid Valve controls the oil flow that

applies the pressure to advance or retard the camshafts.

Ignition voltage is supplied directly to the Camshaft Position Actuator Solenoid Valve. The ECM controls the solenoid valve by grounding the

control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can

determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.

Conditions for Running the DTC

* The engine speed is greater than 80 RPM.

* The ignition voltage is between 10-18 V.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1439

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1439

Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup, and

programming

6T70/6T75 - Automatic Transmission

DTC P0601-P0604 or P062F

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 P0601

- Transmission Control Module (TCM) Read Only Memory (ROM)

DTC P0602

- Transmission Control Module (TCM) Not Programmed

DTC P0603

- Transmission Control Module (TCM) Long Term Memory Reset

DTC P0604

- Transmission Control Module (TCM) Random Access Memory (RAM)

DTC P062F

- Transmission Control Module (TCM) Long Term Memory Performance

Circuit/System Description

This is an internal fault detection of the control solenoid (w/body and TCM) valve assembly. This fault is handled inside the control solenoid

(w/body and TCM) valve assembly and no external circuits are involved.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The control solenoid (w/body and TCM) valve assembly has detected an internal malfunction.

Action Taken When the DTC Sets

* DTCs P0601, P0602, P0603, P0604, and P062F are Type A DTCs.

* The TCM shifts to a default gear, shuts down, and turns OFF.

Conditions for Clearing the DTC

DTCs P0601, P0602, P0603, P0604, and P062F are Type A DTCs.

Reference Information

Description and Operation

Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Electronic Component Description) for control solenoid (w/body and TCM) valve assembly

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

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1998

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1998

* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and

programming.

* Manual Shift Shaft Position Switch Replacement (See: Powertrain Management/Computers and Control Systems/Sensors and Switches -

Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/2ML70 - Automatic Transmission).

* Transmission Control Wiring Harness Extension Harness Removal (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/5. Transmission Control Wiring Harness Extension

Harness Removal).

P183B

DTC P181C-P181F, P183A-P183E, P184A, or P184B

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 Descriptor

DTC P181C

- Internal Mode Switch 2 R1 Circuit Low Voltage

DTC P181D

- Internal Mode Switch 2 R1 Circuit High Voltage

DTC P181E

- Internal Mode Switch 2 R2 Circuit Low Voltage

DTC P181F

- Internal Mode Switch 2 R2 Circuit High Voltage

DTC P183A

- Internal Mode Switch 2 D1 Circuit Low Voltage

DTC P183B

- Internal Mode Switch 2 D1 Circuit High Voltage

DTC P183C

- Internal Mode Switch 2 D2 Circuit Low Voltage

DTC P183D

- Internal Mode Switch 2 D2 Circuit High Voltage

DTC P183E

- Internal Mode Switch 2 - Invalid Range

DTC P184A

- Internal Mode Switch 2 S Circuit Low Voltage

DTC P184B

- Internal Mode Switch 2 S Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data