2010 Cadillac Truck SRX AWD V6-3.0L Page 330

2010 Cadillac Truck SRX AWD V6-3.0L Page 330

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

1. With a master vehicle key, turn the ignition ON.

2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.

3. Turn the ignition OFF and wait 5 s.

4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.

5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.

6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.

B305A

DTC B305A

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 B305A 00

- No Response From Steering Column Lock Received

Circuit/System Description

The vehicle theft deterrent subsystem provides the capability to lock or unlock the steering electrically. The steering column lock control module is

allowed to unlock when power mode transitions to a non off power mode and an authenticated driver identification device is present. Once the

column is unlocked, a crank request can be allowed.

Conditions for Running the DTC

* The ignition is in OFF, ACCESSORY or RUN position.

* The system voltage is between 9-16 V.

Conditions for Setting the DTC

The body control module (BCM) has not received any response from the steering column lock control module.

Action Taken When the DTC Sets

* DTC B305A is stored in the BCM memory.

* The driver information center displays the service column lock system warning message.

* The steering column lock indicator is ON.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.

* The BCM has received response from the steering column lock control module.

Reference Information

Schematic Reference

Column Lock Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column)

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2010 Cadillac Truck SRX AWD V6-3.0L Page 470

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Testing

1. Ignition OFF, disconnect the KR70 RAP/ACCY relay.

2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 10 Ohms

between the ground control circuit terminal 86 and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Verify that a test lamp illuminates between the B+ circuit terminal 87and ground.

瀚慖f the test does not illuminate, test the B+ circuit for short to ground or an open/high resistance.

4. Connect a test lamp between the control circuit terminal 85 and the ground circuit terminal 86.

5. Command the RAP/ACCY relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the

command states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the BCM.

6. Connect the RAP/ACCY relay. Disconnect the harness connector at the center console accessory power outlet.

7. Connect a test lamp between the ignition circuit terminal A and ground.

8. Command the RAP/ACCY relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the

command states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the KR70

RAP/ACCY relay.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or

replace the KR70 RAP/ACCY relay.

Component Testing

1. Ignition OFF, disconnect the KR70 RAP/ACCY relay.

2. Test for 70-150 Ohms between terminals control circuit terminal 85 and ground terminal 86.

瀚慖f not within the specified range, replace the KR70 RAP/ACCY relay.

3. Test for infinite resistance between the following terminals:

* 30 and 86

* 30 and 87

* 30 and 85

* 85 and 87

瀚慖f not the specified value, replace the KR70 RAP/ACCY relay.

4. Install a 3 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less

than 2 Ohms between terminals 30 and 87.

瀚慖f greater than the specified range, replace the KR70 RAP/ACCY relay.

Repair Instructions

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

* 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))

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2010 Cadillac Truck SRX AWD V6-3.0L Page 1473

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Engine Control Module Scan Tool Information (LF1,LFW) (See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Scan Tool Testing and Procedures)Engine Control Module Scan Tool Information (LAU) (See: Powertrain Management/Computers

and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures) for scan tool information

Circuit/System Verification

1. With the ignition OFF, inspect the engine wiring harnesses carrying the B23 camshaft position sensor circuits for the following conditions:

* Close routing of aftermarket electrical equipment

* Close to solenoids, motors, and relays

瀚慍orrect any wire harness routing or component placement conditions if it is determined to be a possible source of electrical interference.

2. Observe the following scan tool parameters are all incrementing:

* Exhaust Camshaft Position Active Counter Bank 1

* Intake Camshaft Position Active Counter Bank 1

* Exhaust Camshaft Position Active Counter Bank 2

* Intake Camshaft Position Active Counter Bank 2

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, all vehicle systems OFF, this may take 2 minutes, disconnect the affected B23 camshaft position sensor connector.

2. Test for less than 3 ohm between the low reference circuit terminal 1 and ground.

瀚慖f greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20

ECM.

Note: The control module or the sensor may be damaged if the circuit is shorted to B+ voltage.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for an open/high resistance or short to ground. If the circuit tests normal,

replace the K20 ECM.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

4. Test for 4.8-5.2 V between the signal circuit terminal 2 and ground.

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

replace the K20 ECM.

瀚慖f greater than the specified range, test the affected signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

5. Ignition ON, using a 3 A fused jumper wire connected to ground; momentarily touch the camshaft position sensor signal circuit terminal 2

repeatedly. The appropriate camshaft position active counter parameter should increment.

瀚慖f the camshaft position active counter does not increment, replace the K20 ECM.

瀚慖f the circuits test normal, replace the B23 camshaft position sensor.

Component Testing

Note: You must perform the Circuit/System Testing before proceeding with Component Testing.

1. Inspect the B23 crankshaft position sensor for looseness and correct installation. Remove the crankshaft position sensor from the engine and

2010 Cadillac Truck SRX AWD V6-3.0L Page 1460

2010 Cadillac Truck SRX AWD V6-3.0L Page 1460

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

1. Engine running, observe the following scan tool control circuit status parameters for the appropriate cylinder T8 ignition coil:

* Ignition Coil 1-6 Control Circuit Low Voltage Test Status

* Ignition Coil 1-6 Control Circuit Open Test Status

* Ignition Coil 1-6 Control Circuit High Voltage Test Status

Each parameter should display Not Run or OK.

2. Engine idling, observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, or P0356 should not set.

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.

2. Ignition OFF, and all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down. Test for less than 5 ohm between

the ground circuit terminal A and ground.

瀚慖f greater than the specified range, repair the ground circuit for an open/high resistance.

3. Ignition OFF, test for less than 5 ohm between the low reference circuit terminal B and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

4. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.

瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests

normal and the ignition voltage circuit fuse is open, test all components connected to the ignition voltage circuit and replace as necessary.

5. Engine running, observe the Ignition Coil 1-6 Control Circuit Low Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for open or short to ground.

6. Engine running, observe the Ignition Coil 1-6 Control Circuit Open Test Status on the scan tool. Test Status should be Ok or Not Run.

瀚慖f test status is Malfunction test for open circuit.

7. Engine running, observe the Ignition Coil 1 6 Control Circuit High Voltage Test Status on the scan tool. Test Status should be Ok or Not

Run.

瀚慖f test status is Malfunction test for short to voltage.

8. If all circuits test normal, test or replace the T8 ignition coil.

Repair Instructions

* T8 Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 1)

* T8 Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 2)

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

Repair Verification

Note: An ignition control circuit fault condition will result in an engine misfire, and under certain driving conditions could possibly overheat the

3-way catalytic converter.

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2010 Cadillac Truck SRX AWD V6-3.0L Page 617

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

Verify none of the following DTCs are set:

* DTC B3109

* DTC B3110

* DTC B3111

* DTC B3112

* DTC B3113

If any of the DTCs are set, replace the battery in the appropriate keyless entry transmitter. Operate the transmitter 3 consecutive times. If the DTC

resets, replace the keyless entry transmitter.

Repair Instructions

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

Replacing Keys (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Service and Repair/Replacing Keys)

B3111

DTC B3109-B3113

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 B3109 00

- Keyless Entry Transmitter 1 Battery

DTC B3110 00

- Keyless Entry Transmitter 2 Battery

DTC B3111 00

- Keyless Entry Transmitter 3 Battery

DTC B3112 00

- Keyless Entry Transmitter 4 Battery

DTC B3113 00

- Keyless Entry Transmitter 5 Battery

Circuit/System Description

With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote control

door lock receiver, along with the commanded keyless entry function. The remote control door lock receiver sends this to the body control module

(BCM) to perform the requested function.

Conditions for Running the DTC

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2010 Cadillac Truck SRX AWD V6-3.0L Page 783

Testing/Circuit Testing)

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

Procedures/Connector Repairs/Connector Repairs)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Testing

1. Ignition ON, perform the following calibration procedures. Refer to:

* Steering Angle Sensor Centering (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and Switches -

Steering/Steering Angle Sensor/Service and Repair/Procedures)

* Vehicle Yaw Sensor Learn (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing

and Inspection/Vehicle Yaw Sensor Learn)

* Brake Pressure Modulator Valve Pressure Sensor Calibration (See: Brakes and Traction Control/Antilock Brakes / Traction Control

Systems/Hydraulic Control Assembly - Antilock Brakes/Testing and Inspection)

2. Verify that DTC C056D is not present.

瀚慖f DTC C056D is present, replace the module that set the DTC.

Repair Instructions

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

* Steering Angle Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and Switches -

Steering/Steering Angle Sensor/Service and Repair/Removal and Replacement)

* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes

/ Traction Control Systems/Yaw Rate Sensor/Service and Repair)

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

Antilock Brake System

DTC C056E

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 C056E 45

- Electronic Control Unit Software Variant Not Programmed

DTC C056E 4A

- Electronic Control Unit Software Programming Checksum Error

DTC C056E 5A

- Electronic Control Unit Software Not Plausible

Circuit/System Description

The electronic brake control module (EBCM) must be configured with the security code, CAN configuration data and vehicle options. If not

properly configured after installation, the EBCM may set a DTC.

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

Conditions for Running the DTC