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2010 Cadillac CTS Sedan AWD V6-3.6L Page 492

Testing/Testing for Intermittent Conditions and Poor Connections)

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

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

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

Scan Tool Reference

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

Circuit/System Verification

Ignition ON, observe the scan tool Liftgate Handle Switch parameter while pressing and releasing the liftgate handle switch. The parameter should

change between Active and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at the liftgate handle switch.

2. Ignition ON, verify the scan tool Liftgate Handle Switch parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the LGM.

3. Connect a 3A fused jumper wire between the signal circuit terminal 1 and ground, verify the scan tool Liftgate Handle Switch is Active.

瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the

LGM.

4. If all circuits test normal, test or replace the liftgate handle switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the liftgate handle switch.

2. Test for infinite resistance between the signal terminal 1 and the low reference terminal 2 with the switch in the open position.

瀚慖f not the specified value, replace the liftgate handle switch.

3. Test for less than 2.0 ohms between the signal terminal 1 and the low reference terminal 2 with the switch in the closed position.

瀚慖f greater than the specified range, replace the liftgate handle switch.

Repair Instructions

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

* Liftgate Outside Handle Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Handle/Service and

Repair)

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

B2495

DTC B2495

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 B2495 01

- Liftgate Latch Control Circuit Short to Battery

DTC B2495 02

- Liftgate Latch Control Circuit Short to Ground

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 347

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/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 appropriate antenna harness connector at the TV antenna module and the harness connector at the TV antenna

amplifier.

2. Test for less than 5 ohms of resistance between the two ends of the coax cable center conductor.

瀚慖f greater than the specified range, replace the antenna coax cable.

3. Test for less than 5 ohms of resistance between the two ends of the coax cable outer shield.

瀚慖f greater than the specified range, replace the antenna coax cable.

4. Test for infinite resistance between the antenna coax center conductor and the outer shield.

瀚慖f less than the specified range, replace the antenna coax cable.

5. Connect the harness connector at the TV antenna module.

6. Ignition ON, TV ON, wait 20 seconds, test for more than 1 volt at the coax cable center conductor terminal 2.

瀚慖f less than the specified value, replace the TV antenna module.

7. Ignition OFF, disconnect the harness connector at the appropriate TV antenna.

8. Test for less than 5 ohms of resistance between the two ends of the TV antenna coax cable center conductor.

瀚慖f greater than the specified range, replace the TV antenna coax cable.

9. Test for less than 5 ohms of resistance between the two ends of the TV antenna coax cable outer shield.

瀚慖f greater than the specified range, replace the TV antenna coax cable.

10. Test for infinite resistance between the TV antenna coax center conductor and the outer shield.

瀚慖f less than the specified range, replace the TV antenna coax cable.

11. Ignition OFF, TV OFF, connect the harness connector at the TV antenna amplifier.

12. Ignition ON, TV ON, wait 20 seconds, test for more than 1 volt at the TV antenna coax cable center conductors.

瀚慖f less than the specified value, replace the TV antenna amplifier.

13. If all circuits test normal, replace the inoperative TV antenna.

Repair Instructions

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

* Television Antenna Amplifier Replacement (See: Accessories and Optional Equipment/Antenna/Antenna Amplifier/Service and Repair)

* Television Antenna Cable Replacement (See: Accessories and Optional Equipment/Antenna/Antenna, TV/Service and Repair)

B1286

DTC B1283-B1286

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.

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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

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify no B52 HO2S heater DTCs are set.

瀚慖f a B52 HO2S heater DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Engine running, observe the appropriate scan tool B52 HO2S voltage parameter. The reading should be within the range of 50-1,050 mV.

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 appropriate B52 HO2S harness connector.

2. Ignition ON, observe the appropriate scan tool HO2S voltage parameter. The parameter should display 1.27 V.

瀚慖f less than the specified range, test the high and low signal circuits for a short to ground. If both signal circuit test normal, replace the

K20 ECM.

3. Ignition ON, test for 2.5-3.0 V between the high signal circuit terminal B and ground.

瀚慖f less than the specified range, test the high signal circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.

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

4. Ignition OFF, connect a 3 A fused jumper wire between the high signal circuit terminal B and the low signal circuit terminal A.

Note: The low signal circuit is tied to a pull-up circuit within the ECM. A voltage of 0.90-1.10 V on the low signal circuit is normal.

5. Ignition ON, verify the scan tool HO2S parameter displays 0.0 V.

瀚慖f greater than the specified range, test the low signal circuit for an open/high resistance or for a short to voltage. If the circuit tests

normal, replace the K20 ECM.

6. If all circuits test normal, test or replace the appropriate B52 HO2S.

Repair Instructions

Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).

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 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* 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 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* 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 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

* 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 (LLT) (See: Powertrain Management/Computers and

Control Systems/Oxygen Sensor/Service and Repair)

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

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 253

Testing/Testing for Intermittent Conditions and Poor Connections)

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

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

Scan Tool Reference

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

Circuit/System Verification

1. Verify that DTC B1405 is not set.

瀚慖f DTC is set, refer to DTC B1405 (See: B Code Charts/B1405).

2. Verify that DTC B0958 3A, B0959 3A, B0960 3A, or B0961 3A is not set.

瀚慖f DTC is set, replace the appropriate object alarm sensor.

3. Transmission in REVERSE, verify the parking assist system is enabled and one audible beep sounds.

Circuit/System Testing

Single Object Alarm Sensor DTC Set

1. Ignition OFF, disconnect the harness connector at the appropriate object alarm sensor.

2. Ignition OFF for 30 seconds, test for less than 20 Ohms between the low reference circuit terminal 2 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 rear

object sensor control module.

3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 V between the voltage reference circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the rear object

sensor control module.

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

normal, replace the rear object sensor control module.

4. Ignition OFF, remove the malfunctioning object alarm sensor and swap locations with another properly functioning object alarm sensor.

5. Connect the harness connector at both sensors.

6. Ignition ON, verify DTC is set for the new location in which the malfunctioning object alarm sensor is installed.

瀚慖f the DTC does not set for the new location, test the signal circuit terminal 3 for a short to voltage, short to ground, or an open/high

resistance. If the circuit tests normal, replace the rear object sensor control module.

7. If the DTC sets for the new location in which the malfunctioning object alarm sensor is installed, replace the appropriate object alarm sensor.

Multiple Object Alarm Sensor DTCs Set

1. Ignition OFF, disconnect the harness connector at each of the object alarm sensors.

2. Ignition OFF for 30 seconds, test for less than 20 Ohms between the low reference circuit terminal 2 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 rear

object sensor control module.

3. Ignition ON, transmission in REVERSE, test for 8.0-9.0 V between the voltage reference circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the rear object

sensor control module.

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

normal, replace the rear object sensor control module.

Repair Instructions

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

* Rear Object Sensor Replacement (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Parking

Assist Distance Sensor/Service and Repair/Rear Object Sensor Replacement)

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

programming

Parking Assist Display Only

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Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/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 harness connector at the front upper beam pedestrian impact detection sensor.

2. Ignition OFF, test for less than 5 ohms between the sensor ground circuit terminal 3 and ground.

瀚慖f greater than the specified value, test the circuit for a short to voltage and an open/high resistance. If the circuit tests normal, replace the

pedestrian impact detection module.

3. Ignition ON, verify a test lamp illuminates between the sensor supply voltage circuit terminal 4 and ground.

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

pedestrian impact detection module.

4. Ignition OFF, disconnect the harness connector at the pedestrian impact detection module.

5. Test for infinite resistance between the sensor signal circuit terminal 2 and ground.

瀚慖f less than infinite resistance, test the circuit for a short to ground.

6. Ignition ON, test for less than 1 volt between the sensor signal circuit terminal 2 and ground.

瀚慖f greater than the specified value, test the circuit for a short to voltage.

7. Ignition ON, test for less than 1 volt between the sensor low reference circuit terminal 1 and ground.

瀚慖f greater than the specified value, test the circuit for a short to voltage.

8. Test for less than 1 ohm between the sensor low reference circuit terminal 1 and the pedestrian impact detection module terminal 40.

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

9. Test for less than 1 ohm between the sensor signal circuit terminal 2 and the pedestrian impact detection module terminal 39.

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

10. If all circuits test normal, replace the front upper beam pedestrian impact detection sensor.

11. With a scan tool, clear DTCs.

12. Verify DTC B009C is not set.

瀚慖f DTC is set, replace the pedestrian impact detection module.

Repair Instructions

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

* Pedestrian Impact Detection Sensor Replacement - Front Upper Beam (See: Accessories and Optional Equipment/Collision Avoidance and

Parking Assist Systems/Collision Avoidance Sensor/Service and Repair/Pedestrian Impact Detection Sensor Replacement - Front Upper

Beam)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for pedestrian impact detection module

replacement, setup, and programming

B009D

DTC B009D

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.

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Testing/Testing for Intermittent Conditions and Poor Connections)

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

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

Scan Tool Reference

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

Special Tools

* J 38715-A SIR Driver/Passenger Load Tool

* SA9409Z-A SIR Driver/Passenger Load Tool

Circuit/System Testing

Important:

* Refer to SIR Service Precautions (See: Restraints and Safety Systems/Air Bag Systems/Service Precautions/Technician Safety

Information).

* When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or

replacement of the affected component/connector:

- Pretensioner

- Air bag module

- SDM

- Air bag wiring harness connector

- SDM wiring harness connector

Important: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA

should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment

circuit to operate properly.

1. Verify that the steering wheel module connector and CPA are engaged.

瀚慖f the CPA or connector is not properly engaged, make the appropriate repair.

2. Ignition OFF, disconnect the harness connector at the steering wheel module.

3. With the appropriate load tool adaptor, connect special tool J 38715-A or SA9409Z-A in place of the inflator restraint module.

4. Ignition ON, verify the DTC is set as current.

瀚慖f the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A or SA9409Z-A , reconnect the

harness connector at the steering wheel module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the

steering wheel module.

5. Ignition OFF, disconnect special tool J 38715-A or SA9409Z-A and the adaptor.

6. Disconnect the harness connector at the steering wheel module coil.

7. With the appropriate adaptor, connect special tool J 38715-A or SA9409Z-A .

8. Ignition ON, verify the DTC is set as current.

瀚慖f the DTC is not set or is set as history, replace the steering wheel module coil.

9. Ignition OFF, disconnect special tool J 38715-A or SA9409Z-A and the adaptor.

10. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal and ground.

* Stage 1 terminal 1

* Stage 2 terminal 3

瀚慖f greater than the specified range, test the control circuit for a short to voltage.

11. Test for less than 1 volt between the appropriate low control circuit terminal and ground.

* Stage 1 terminal 2

* Stage 2 terminal 4

瀚慖f greater than the specified range, test the control circuit for a short to voltage.

12. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.

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Testing/Testing for Intermittent Conditions and Poor Connections)

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

Scan Tool Reference

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

Special Tools

J 43241 Keyless Entry Tester

Circuit/System Verification

Attempt to program the keyless entry transmitter, refer to Remote Control Door Lock Transmitter Programming (without Y41) (See: Accessories

and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry Transmitter/Testing and Inspection/Remote Control Door Lock

Transmitter Programming (without Y41)). The transmitter should program.

Circuit/System Testing

1. Verify that the transmitter is the correct transmitter for the vehicle.

瀚慖f not correct, replace the transmitter.

2. Place the transmitter on the test pad of the J 43241 and press each button of the transmitter one at a time. The tester should sound a tone and

illuminate a green light when each button is pressed.

瀚慖f one or more buttons does not sound the tone and illuminate the green light, replace the transmitter battery and retest with the J 43241 .

If the condition continues after battery replacement, replace the transmitter.

3. Attempt to program the transmitter, refer to Remote Control Door Lock Transmitter Programming (without Y41) (See: Accessories and

Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry Transmitter/Testing and Inspection/Remote Control Door

Lock Transmitter Programming (without Y41)). The transmitter should program.

瀚慖f the transmitter does not program, replace the RCDLR.

Repair Instructions

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

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

B3109

DTC B3109, B3110, B3111, or B3112

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 Low Battery

DTC B3110 00

- Keyless Entry Transmitter 2 Low Battery

DTC B3111 00

- Keyless Entry Transmitter 3 Low Battery

DTC B3112 00

- Keyless Entry Transmitter 4 Low Battery

Circuit/System Description

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Testing/Testing for Intermittent Conditions and Poor Connections)

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

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

Scan Tool Reference

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

Circuit/System Verification

Important: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment.

The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number

of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.

1. Verify DTC B0055 is not set.

瀚慖f DTC B0055 is set, replace SDM.

2. Verify DTC B0052 is not set.

瀚慖f DTC B0052 is set, clear the DTC and operate the vehicle within the conditions for running the DTC. If the DTC resets, replace the

SDM.

3. Verify DTC B0053 is not set.

瀚慖f DTC is set along with additional DTCs, repair the malfunction causing the DTCs before replacing the SDM.

Repair Instructions

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

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

B0055

DTC B0052, B0053, or B0055

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 B0052 00

- Deployment Commanded

DTC B0053 00

- Deployment Commanded With Loop DTCs Present

DTC B0055 00

- Side Airbag Deployment Commanded

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) contains a sensing device that converts vehicle velocity changes into an electrical

signal. The SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM

performs additional signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the

stored values, the SDM will cause current to flow through the appropriate deployment loops.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

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Testing/Testing for Intermittent Conditions and Poor Connections)

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

Description and Operation

* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Electronic Component Description)

* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Transmission General Description)

* Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Transmission Component and System Description)

DTC Type Reference

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

(DTC) Type Definitions)

Circuit/System Verification

1. Engine idling at normal operating temperature, verify the scan tool Trans Fluid Temp. parameter is between -74 and +174掳C (-101 and +345掳

F).

瀚慖f not within the specified range, replace the Q8 control solenoid valve assembly.

2. Operate the vehicle at 64 km/h (40 mph) for 10 minutes. Monitor the Transmission Fluid Temperature parameter and the TCM Temperature

parameter with a scan tool. The Transmission Fluid Temperature parameter should increase by more than 2掳C (3.5掳F). Also, the

Transmission Fluid Temperature parameter and the TCM Temperature parameter should be within 10掳C (18掳F) of each other.

瀚慖f the Transmission Fluid Temperature parameter does not increase by more than 2掳C (3.5掳F) or the Transmission Fluid Temperature

parameter is not within 10掳C (18掳F) of the TCM Temperature parameter, then replace the Q8 control solenoid valve assembly.

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.

Repair Instructions

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

* Control solenoid valve assembly replacement. Refer to Control Module References (See: Testing and Inspection/Programming and

Relearning) for replacement, setup, and programming.

* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Programming and Relearning/Service Fast Learn Adapts) following all transmission related repairs.

P0712

DTC P0712 or P0713

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 P0712

- Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage

DTC P0713

- Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage

Diagnostic Fault Information

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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

Circuit/System Testing

1. Ignition OFF, disconnect the KR27 starter relay.

2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5.0 Ohms between the relay

ground circuit terminal 85 and ground.

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

3. Ignition OFF, connect a test lamp between the control circuit terminal 86 and the ground circuit terminal 85.

4. With the transmission range selector in park or neutral, cycle the ignition between the OFF and CRANK position. The test lamp should turn

ON and OFF when changing between the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for short to voltage. If the circuit tests normal, replace the K20 ECM.

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 K20 ECM.

5. If all circuits tests normal, replace the KR27 starter 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))

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

P0617

DTC P0615, P0616, or P0617

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 P0615

- Starter Relay Control Circuit

DTC P0616

- Starter Relay Control Circuit Low Voltage

DTC P0617

- Starter relay Control Circuit High Voltage

Diagnostic Fault Information

2010 Cadillac CTS Sedan AWD V6-3.6L Page 2024

2010 Cadillac CTS Sedan AWD V6-3.6L Page 2024

Testing/Testing for Intermittent Conditions and Poor Connections)

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

Description and Operation

* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Electronic Component Description)

* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Transmission General Description)

* Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Transmission Component and System Description)

* Park - Engine Running (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Park - Engine

Running)

* Reverse (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Reverse)

* Neutral - Engine Running (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Neutral -

Engine Running)

* Drive Range, First Gear Engine Braking (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/Drive Range/First Gear Engine Braking)

* Drive Range, First Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive Range/First

Gear)

* Drive Range, Second Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Second Gear)

* Drive Range, Third Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Third Gear)

* Drive Range, Third Gear Default (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Third Gear Default)

* Drive Range - Fourth Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Fourth Gear)

* Drive Range, Fifth Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Fifth Gear)

* Drive Range, Fifth Gear Default (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Fifth Gear Default)

* Drive Range, Sixth Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive

Range/Sixth Gear)

* Fluid Passages (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Fluid Passages)

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

Special Tools

* DT-47825 - Control Solenoid Test Plate

* DT-47825-10 - Jumper Harness

For equivalent regional tools, refer to Special Tools (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Tools and Equipment).

Circuit/System Verification

Note: If other DTCs are set, diagnose those DTCs first.

1. Engine idling in Park, with parking brake applied and drive wheels chocked.

2. Perform the Transmission Fluid Level and Condition Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing

and Inspection/Initial Inspection and Diagnostic Overview/Transmission Fluid Level and Condition Check) to verify correct fluid level and

condition.

3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Cleaning (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/Control Solenoid Valve and Transmission Control

Module Assembly Cleaning) to dislodge debris and free up the valves.

4. Monitor the Transmission Fluid Pressure (TFP) switch 4 with a scan tool. Place the gear select lever in Park, Reverse, and Neutral range.

Verify the TFP switch 4 parameter states are correct for Park, Reverse, and Neutral. Refer to Transmission Fluid Pressure Switch Logic (

See: Specifications/Mechanical Specifications/Automatic Transmission/Transaxle/System Specifications/Transmission Fluid Pressure Switch

Logic).

5. Place the gear select lever in Drive range. Command the shift transmission with a scan tool through all forward ranges. Verify the TFP switch

4 parameter states are correct for all forward ranges. Refer to Transmission Fluid Pressure Switch Logic (See: Specifications/Mechanical

Specifications/Automatic Transmission/Transaxle/System Specifications/Transmission Fluid Pressure Switch Logic).

6. Engine idling in Park, verify with a scan tool the Transmission ISS/OSS supply voltage test status parameter displays OK.

7. Engine idling in Park. Observe the Transmission ISS parameter on the scan tool, while varying the engine speed. The Transmission ISS

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 1938

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

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P2178, P2180, P2188, or P2190 should not be set.

瀚慖f any other DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic

Trouble Code (DTC) List - Vehicle) to diagnosis the applicable DTC.

2. Ignition ON, observe the barometric pressure (BARO) sensor pressure parameter and compare the reading on the scan tool to the barometric

pressure table. Refer to Altitude Versus Barometric Pressure (See: Powertrain Management/Computers and Control Systems/Specifications

).

瀚慖f the BARO sensor pressure is not within the range specified for your altitude, refer to DTC P2227, P2228, or P2229 (LLT) ( See: P

Code Charts/P2227).

3. Engine at normal operating temperature, observe the scan tool Long Term Fuel Trim parameters. The LT FT Cruise/Accel parameters should

be greater than -23 %. The LT FT Idle/Decel parameters should be greater than -7 %.

瀚慖f not within the specified range, inspect for the following conditions:

* A mass air flow (MAF) sensor signal that is skewed. If the Short Term FT parameters for both banks changes greater than 20 % when the

MAF sensor is disconnected, refer to DTC P0101 (w/LLT) (See: P Code Charts/P0101)DTC P0101 (LF1) (See: P Code Charts/P0101).

* A collapsed air intake duct

* A restricted air filter element-Refer to Air Cleaner Element Replacement (LLT) (See: Engine, Cooling and Exhaust/Engine/Tune-up and

Engine Performance Checks/Air Cleaner Housing/Air Filter Element/Service and Repair)Air Cleaner Element Replacement (LSA) (See:

Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Air Cleaner Housing/Air Filter Element/Service and

Repair)Air Cleaner Element Replacement (LF1) (See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance

Checks/Air Cleaner Housing/Air Filter Element/Service and Repair).

* The MAF sensor for foreign objects-Refer to Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LLT) (See:

Powertrain Management/Computers and Control Systems/Air Temperature Sensor ( Ambient / Intake )/Service and Repair)Mass Airflow

Sensor with Intake Air Temperature Sensor Replacement (LSA) (See: Powertrain Management/Computers and Control Systems/Air

Temperature Sensor ( Ambient / Intake )/Service and Repair)Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

(LF1) (See: Powertrain Management/Computers and Control Systems/Air Temperature Sensor ( Ambient / Intake )/Service and Repair).

* Excessive fuel in the crankcase-Change the oil as necessary.

* Fuel contamination-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (with Special Tool) (See: Powertrain Management/Computers

and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (with

Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (without Special Tool) (See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Component Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (without Special

Tool)) and Fuel System Cleaning (See: Powertrain Management/Fuel Delivery and Air Induction/Service and Repair).

* The engine control module grounds for being clean, tight, and in the correct locations

* Rich injectors-Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector Solenoid Coil Test)Fuel Injector Solenoid Coil

Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection).

* Restricted exhaust system-Refer to Symptoms - Engine Exhaust (See: Engine, Cooling and Exhaust/Exhaust System/Testing and

Inspection/Symptoms - Engine Exhaust).

* An engine mechanical condition-Refer to Symptoms - Engine Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and

Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Mechanical).

4. 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.

Repair Instructions

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

P2227

DTC P2227, P2228, or P2229 (LLT)

Diagnostic Instructions