2010 Cadillac Truck SRX AWD V6-3.0L Page 300

2010 Cadillac Truck SRX AWD V6-3.0L Page 300

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

* Headlamp Replacement (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement)

* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay

Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power

Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))

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

and programming

B257B

DTC B1405, B1529, or B257B

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 B1405 02

- Control Module Voltage Reference Output 2 Circuit Short to Ground

DTC B1405 03

- Control Module Voltage Reference Output 2 Circuit Low Voltage

DTC B1405 07

- Control Module Voltage Reference Output 2 Circuit High Voltage

DTC B1529 03

- Control Module Voltage Reference Output 5 Circuit Low Voltage

DTC B1529 07

- Control Module Voltage Reference Output 5 Circuit High Voltage

DTC B257B 03

- Lighting Control Switch Signal Low Voltage

DTC B257B 07

- Lighting Control Switch Signal High Voltage

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) supplies battery positive voltage to the backlight dimmer switch, which is part of the headlamp switch. When the

backlight dimmer switch is placed in a desired brightness position, reference voltage is applied to the BCM. The BCM interprets this voltage signal,

2010 Cadillac Truck SRX AWD V6-3.0L Page 633

2010 Cadillac Truck SRX AWD V6-3.0L Page 633

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

* Ignition Lock Key Transmitter Antenna Replacement - Rear Compartment (See: Accessories and Optional Equipment/Antitheft and Alarm

Systems/Keyless Entry/Antenna - Keyless Entry/Service and Repair/Ignition Lock Key Transmitter Antenna Replacement - Rear

Compartment)

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

and programming

B3125

DTC B3125, B3130, or B3135

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 B3125 01

- Driver Door Only Unlock Circuit Short to Battery

DTC B3125 02

- Driver Door Only Unlock Circuit Short to Ground

DTC B3130 01

- All Doors Unlock Circuit Short to Battery

DTC B3130 02

- All Doors Unlock Circuit Short to Ground

DTC B3135 01

- All Doors Lock Circuit Short to Battery

DTC B3135 02

- All Doors Lock Circuit Short to Ground

Diagnostic Fault Information

2010 Cadillac Truck SRX AWD V6-3.0L Page 1496

2010 Cadillac Truck SRX AWD V6-3.0L Page 1496

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

* Evaporative Emission Canister Purge Solenoid Valve Replacement (LF1) (See: Powertrain Management/Emission Control

Systems/Evaporative Emissions System/Canister Purge Solenoid/Service and Repair)Evaporative Emission Canister Purge Solenoid Valve

Replacement (LAU) (See: Powertrain Management/Emission Control Systems/Evaporative Emissions System/Canister Purge

Solenoid/Service and Repair)

* Evaporative Emission Canister Vent Solenoid Valve Replacement (NT7, NU5) (See: Powertrain Management/Emission Control

Systems/Evaporative Emissions System/Evaporative Emission Control Canister/Canister Vent Valve/Service and Repair)

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

P0446

DTC P0446

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 P0446

- Evaporative Emissions Vent System Performance

Typical Scan Tool Data

Circuit/System Description

This DTC tests the evaporative emission (EVAP) system for a restricted or blocked evaporative emission vent path that would cause excess

amounts of vacuum to be developed in the evaporative emission system. With the purge valve open and the canister vent valve open, if the

evaporative emission system vacuum goes above a calibrated threshold, the test will fail.

Conditions for Running the DTC

* DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0449, P0451,

P0452, P0453, P0454, P0464, P0496, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128,

P2135, P2138 are not set.

* The ignition voltage is between 11-18 V.

* The barometric pressure (BARO) is more than 74 kPa.

* The fuel level is between 15-85 percent.

* The engine coolant temperature (ECT) is less than 35掳C (95掳F).

* The intake air temperature (IAT) is between 4-30掳C (39-86掳F).

* DTC P0446 runs once per cold start when the above conditions are met.

Conditions for Setting the DTC

* The fuel tank vacuum is greater than 12 inches H2O vacuum for 5 seconds.

OR

* The fuel tank pressure is less than -2.5 inches H2O or more than +5 inches for 60 seconds after a cold start.

Action Taken When the DTC Sets

DTC P0446 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0446 is a Type B DTC.

2010 Cadillac Truck SRX AWD V6-3.0L Page 555

2010 Cadillac Truck SRX AWD V6-3.0L Page 555

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

* Inside Rearview Mirror Replacement (See: Body and Frame/Mirrors/Service and Repair/Inside Rearview Mirror Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for telematics communication interface control

module replacement, setup and programming

B2482

DTC B2476 or B2482

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 B2476 04

- Cellular Phone Select Service Switch Open Circuit

DTC B2476 59

- Cellular Phone Select Service Switch Stuck Button

DTC B2482 00

- Cellular Phone Select Service Switch Range/Performance

Diagnostic Fault Information

Circuit/System Description

The OnStar(R) button assembly consists of 3 buttons, Call/Answer, OnStar(R) Call Center, and OnStar(R) Emergency. The telematics

communication interface control module supplies the OnStar(R) button assembly with 10 V via the keypad supply voltage circuit. Each of the

buttons, when pressed, completes the circuit across a resistor allowing a specific voltage to be returned to the telematics communication interface

control module over the keypad signal circuit. Depending upon the voltage range returned, the telematics communication interface control module

is able to identify which button has been activated.

Conditions for Running the DTC

* Ignition ON.

* Battery voltage must be between 9-16 V.

Conditions for Setting the DTC

B2476 04

The telematics communication interface control module detects an open/high resistance on the keypad supply voltage circuit.

B2482 and B2476 59

The telematics communication interface control module detects a valid signal on the keypad signal circuit for longer than 15 seconds. If one of the

OnStar(R) buttons is held or stuck for 15 seconds or greater, the telematics communication interface control module will set this DTC.

2010 Cadillac Truck SRX AWD V6-3.0L Page 970

2010 Cadillac Truck SRX AWD V6-3.0L Page 970

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

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)

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

P013B

DTC P0133, P013A-P013F, P014A, P014B, P0153, P1133, or P1153 (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 P0133

- HO2S Slow Response Bank 1 Sensor 1

DTC P013A

- HO2S Slow Response Rich to Lean Bank 1 Sensor 2

DTC P013B

- HO2S Slow Response Lean to Rich Bank 1 Sensor 2

DTC P013C

- HO2S Slow Response Rich to Lean Bank 2 Sensor 2

DTC P013D

- HO2S Slow Response Lean to Rich Bank 2 Sensor 2

DTC P013E

- HO2S Delayed Response Rich to Lean Bank 1 Sensor 2

DTC P013F

- HO2S Delayed Response Lean to Rich Bank 1 Sensor 2

DTC P014A

- HO2S Delayed Response Rich to Lean Bank 2 Sensor 2

DTC P014B

- HO2S Delayed Response Lean to Rich Bank 2 Sensor 2

DTC P0153

- HO2S Slow Response Bank 2 Sensor 1

DTC P1133

- HO2S Insufficient Switching Bank 1 Sensor 1

DTC P1153

- HO2S Insufficient Switching Bank 2 Sensor 1

Diagnostic Fault Information

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2010 Cadillac Truck SRX AWD V6-3.0L Page 1539

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

Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle Body/Service and

Repair/Removal and Replacement)Throttle Body Assembly Replacement (LAU) (See: Powertrain Management/Fuel Delivery and Air

Induction/Throttle Body/Service and Repair/Removal and Replacement)

P0513

DTC P0513

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 P0513

- Immobilizer Key Incorrect

Circuit/System Description

The body control module (BCM) sends the pre-release information to the engine control module (ECM) via the serial data circuit. The ECM then

sends a challenge to the BCM. Both the ECM and BCM perform a calculation on this challenge. If the calculated response from the BCM equals

the calculation performed by the ECM, the ECM will allow vehicle starting.

Conditions for Running the DTC

Ignition is in the ACCESSORY or RUN position.

Conditions for Setting the DTC

The calculated response from the BCM does not equal the calculation performed by the ECM.

Action Taken When the DTC Sets

* The security indicator in the instrument cluster will illuminate.

* Vehicle starting will be disabled.

Conditions for Clearing the DTC

* A current DTC P0513 will be cleared when a valid calculation is received.

* A history DTC will be cleared after 40 malfunction-free ignition cycles or when a scan tool is used to clear DTCs.

Diagnostic Aids

The key referenced in the DTC descriptor does not refer to the vehicle key. In this case, key is referring to the challenge response.

Reference Information

Schematic Reference

Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer

Schematics)

Connector End View Reference

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

Description and Operation

Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and

Operation/Immobilizer)

Electrical Information Reference

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

Testing/Circuit Testing)

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2010 Cadillac Truck SRX AWD V6-3.0L Page 782

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

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

Antilock Brake System

DTC C056D

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 C056D 00

- Electronic Control Unit Hardware Malfunction

DTC C056D 39

- Electronic Control Unit Hardware Internal Malfunction

DTC C056D 3B

- Electronic Control Unit Hardware Self-Test Malfunction

Circuit/System Description

The internal fault detection is handled inside the control module. No external circuits are involved.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

In internal hardware failure is detected.

Action Taken When the DTC Sets

* The electronic brake control module (EBCM) disables the ABS, traction control, and stability control for the duration of the ignition cycle.

* The ABS indicator turns ON.

* The traction control/stability control-active indicator turns ON.

Conditions for Clearing the DTC

* A current DTC clears when the diagnostic runs and passes.

* The EBCM will turn OFF the indicators and enable the system functions in the next ignition cycle.

Diagnostic Aids

A newly replaced EBCM can set one or more DTC on its initial ignition ON cycle.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

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

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation)

Electrical Information Reference

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

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2010 Cadillac Truck SRX AWD V6-3.0L Page 584

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

* Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Passenger Side Headlamp) (See: Lighting and Horns/Daytime Running

Lamp/Service and Repair/Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Passenger Side Headlamp))Daytime Running Lamp

Bulb Replacement (T84, T85 Passenger Side Headlamp) (See: Lighting and Horns/Daytime Running Lamp/Service and Repair/Daytime

Running Lamp Bulb Replacement (T84, T85 Passenger Side Headlamp))Daytime Running Lamp Bulb Replacement (T84, T85 Driver Side

Headlamp) (See: Lighting and Horns/Daytime Running Lamp/Service and Repair/Daytime Running Lamp Bulb Replacement (T84, T85

Driver Side Headlamp))Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Driver Side Headlamp) (See: Lighting and

Horns/Daytime Running Lamp/Service and Repair/Daytime Running Lamp Bulb Replacement (TT6,TT7,TT8 Driver Side Headlamp))

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

B2615

DTC B2615

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 B2615 02

- Passenger Compartment Dimming 2 Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

Battery voltage for the courtesy lamps is supplied at all times to the body control module (BCM). When the BCM receives a signal to command the

courtesy lamps ON, it then applies voltage through the courtesy lamps control circuits to the courtesy lamps.

Conditions for Running the DTC

The BCM attempts to illuminate the courtesy lamps.

Conditions for Setting the DTC

The BCM detects a short to ground on the courtesy lamp control circuit.

Action Taken When the DTC Sets

The BCM will not attempt to activate courtesy lamps.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 100 consecutive malfunction ignition cycles have occurred.

Reference Information

Schematic Reference

Interior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Interior Lights Schematics)

Connector End View Reference

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

Description and Operation

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2010 Cadillac Truck SRX AWD V6-3.0L Page 260

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

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

programming

With Memory A45

DTC B242A (With Memory A45)

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 B242A 01

- Seat Heaters Common Circuit Short to Battery

DTC B242A 02

- Seat Heaters Common Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The seat memory control module controls seat heating operation for both the driver and front passenger seats. The heating elements are controlled

through individual high side and low side control circuits. The low side control circuits for both seats are connected to a common reference point

internal to the module. This reference point is biased to approximately 2.5 V. Before the seat memory control module will allow heated seat

operation, it checks to see if this biased voltage is shorted to ground or voltage. Once the module verifies that it is not closing to a shorted heating

element, it allows for heated seat operation. The module will then continue to monitor the heating elements for a shorted circuit.

Conditions for Running the DTC

* DTC B1325 must not be present.

* The seat memory control module must be powered.

Conditions for Setting the DTC