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2010 Cadillac Truck SRX AWD V6-3.0L Page 168 * 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 B0083 01 - Left Front Impact Sensor Short to Battery DTC B0083 02 - Left Front Impact Sensor Short to Ground DTC B0083 04 - Left Front Impact Sensor Open DTC B0083 05 - Left Front Impact Sensor High/Voltage Open DTC B0083 0C - Left Front Impact Sensor Low Current DTC B0083 39 - Left Front Impact Sensor Internal Electronic Failure DTC B0083 3A - Left Front Impact Sens

2010 Cadillac Truck SRX AWD V6-3.0L Page 662 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 appropriate B51 headlamp leveling sensor. 2. Test for less than 5 ohm between the low reference circuit terminal 3 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 K28 headlamp leveling control module. 3. Ignition ON, test for 4.8-5.2 V between the 5V reference circuit terminal 1 and ground. 瀚慖f less than the specified range, test the 5V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module. 瀚慖f greater than the specified range, test the 5V reference circuit for a short to voltage. If the circuit tests normal, replace the K28 headlamp leveling control module. 4. Ver

2010 Cadillac Truck SRX AWD V6-3.0L Page 497 * 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 B1735 02 - Driver Seat Front Up Switch Circuit Short to Ground DTC B1740 02 - Driver Seat Front Down Switch Circuit Short to Ground DTC B1745 02 - Driver Seat Rear Up Switch Circuit Short to Ground DTC B1750 02 - Driver Seat Rear Down Switch Circuit Short to Ground DTC B1755 02 - Driver Seat Assembly Forward Switch Circuit Short to Ground DTC B1760 02 - Driver Seat A

2010 Cadillac Truck SRX AWD V6-3.0L Page 936 - HO2S Circuit High Voltage Bank 1 Sensor 2 DTC P0151 - HO2S Circuit Low Voltage Bank 2 Sensor 1 DTC P0152 - HO2S Circuit High Voltage Bank 2 Sensor 1 DTC P0157 - HO2S Circuit Low Voltage Bank 2 Sensor 2 DTC P0158 - HO2S Circuit High Voltage Bank 2 Sensor 2 DTC P2A00 - HO2S Circuit Closed Loop Performance Bank 1 Sensor 1 DTC P2A03 - HO2S Circuit Closed Loop Performance Bank 2 Sensor 1 Diagnostic Fault Information Typical Scan Tool Data Circuit/System 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. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation

2010 Cadillac Truck SRX AWD V6-3.0L Page 591 * 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 B2657 02 - Ignition Switch Halo Lamp Circuit Short to Ground Diagnostic Fault Information Circuit/System Description The body control module (BCM) supplies a voltage reference through the backlight dimmer switch, which is part of the headlamp switch. When the dimmer switch is placed in a desired brightness position, reference voltage is applied through the backlight d

2010 Cadillac Truck SRX AWD V6-3.0L Page 1294 6T70/6T75 - Automatic Transmission DTC P0218 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 P0218 - Transmission Fluid Overtemperature Circuit/System Description The primary source of heat in the transmission is the torque converter. Hot oil exits the torque converter through the torque converter clutch (TCC) control valve and flows to the transmission cooler supply line. The supply line c

2010 Cadillac Truck SRX AWD V6-3.0L Page 1173 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 Sen

2010 Cadillac Truck SRX AWD V6-3.0L Page 1170 - HO2S Circuit Low Voltage Bank 1 Sensor 2 DTC P0138 - HO2S Circuit High Voltage Bank 1 Sensor 2 DTC P0151 - HO2S Circuit Low Voltage Bank 2 Sensor 1 DTC P0152 - HO2S Circuit High Voltage Bank 2 Sensor 1 DTC P0157 - HO2S Circuit Low Voltage Bank 2 Sensor 2 DTC P0158 - HO2S Circuit High Voltage Bank 2 Sensor 2 DTC P2A00 - HO2S Circuit Closed Loop Performance Bank 1 Sensor 1 DTC P2A03 - HO2S Circuit Closed Loop Performance Bank 2 Sensor 1 Diagnostic Fault Information Typical Scan Tool Data Circuit/System 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. While the engine runs, the HO2S heats up and begins to generate a voltage within a range o

2010 Cadillac Truck SRX AWD V6-3.0L Page 773 Note: The following wheel speed sensor test is polarity sensitive. The wheel speed sensor can be permanently damaged if the polarity is reversed during the test. 1. Ignition OFF, disconnect the harness connector at the appropriate B5 wheel speed sensor. 2. Connect a 3 A fused jumper wire between the signal terminal 1 and 12 V. 3. Connect a DMM set to read DC amperage between the low reference terminal 2 and ground. 4. Spin the wheel very slowly, test for a DC current switching between a low value of 4-8 mA and a high value of 11-16 mA. 瀚慖f not within the specified range, replace the B5 wheel speed sensor. Repair Instructions Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure. * Front Wheel Speed Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Wheel Speed Sensor/Service and Repair/Front Wheel Speed Sensor Replacement) * Rear Wheel Speed

2010 Cadillac Truck SRX AWD V6-3.0L Page 1324 Circuit/System Testing 1. Verify the integrity of the entire air induction system including all turbocharger components by inspecting for the following conditions: * Any damaged components * Intake air pressure and temperature sensor damage * A buildup of contamination, snow or ice at the BARO port on the ECM * Loose or improper installation * An air flow restriction * Any vacuum leak * Any type of air leak between the turbocharger and the throttle body * An exhaust leak 瀚慖f a condition is found, repair as necessary. 2. Ignition OFF, disconnect the harness connector at the B65 intake air pressure and temperature sensor. 3. 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 5 ohm between the low reference circuit terminal 1 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, repla

2010 Cadillac Truck SRX AWD V6-3.0L Page 666 Reference Information Schematic Reference Instrument Cluster Schematics (See: Diagrams/Electrical Diagrams/Instrument Panel, Gauges and Warning Indicators/System Diagram/Instrument Cluster Schematics) Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Driver Information Center (DIC) Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Description and Operation/Driver Information Center (DIC)) Electrical Information Reference * Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit 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

2010 Cadillac Truck SRX AWD V6-3.0L Page 1057 (LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram) Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Camshaft Actuator System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Camshaft Actuator System) Electrical Information Reference * Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit 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 a

2010 Cadillac Truck SRX AWD V6-3.0L Page 1075 DTC P0161 - HO2S Heater Performance Bank 2 Sensor 2 Diagnostic Fault Information Typical Scan Tool Data Circuit/System Description Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensors to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the engine control module (ECM). The ECM uses pulse width modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S operating temperature range. Conditions for Running the DTC P0030, P0036, P0050, or P005

2010 Cadillac Truck SRX AWD V6-3.0L Page 477 * The DTC will clear if the fault does not return after 50 consecutive ignition cycles. * The DTC will clear when run state of charge is greater than or equal to 80 percent. Reference Information Schematic Reference Starting and Charging Schematics (See: Starting and Charging/Diagrams/Electrical Diagrams) Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Charging System Description and Operation (See: Starting and Charging/Charging System/Description and Operation) Electrical Information Reference * Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit 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 Co

2010 Cadillac Truck SRX AWD V6-3.0L Page 1372 Circuit/System Description The engine control module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel injector by grounding the high voltage control circuit of the fuel injector. The ECM monitors the status of the injector high voltage supply circuits and the fuel injector high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. Conditions for Running the DTC * The engine is running. * The ignition voltage is between 11-18 V. * The DTCs run continuously once the above conditions are met. Conditions for Setting the DTC P0201, P0202, P0203, P0204, P0205, or P0206 The ECM detects the injector high voltage supply circuit or the injector high voltage control circuit is open for greater than 2 s. P0261, P0264, P0267, P0270, P0273, or P0276 The ECM detects the injector high voltage control circuit is

2010 Cadillac Truck SRX AWD V6-3.0L Page 958 2. Allow the engine to reach the normal operating temperature. 3. Idle the engine for 10 minutes or until a DTC sets. Observe the DTC information with a scan tool, DTCs P0008 and P0009 should not set. 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. Circuit/System Testing 1. Inspect the timing chains and tensioners for excessive wear or misalignment. 瀚慖f you find a condition with the timing chains or tensioners, repair as necessary. 2. Inspect the crankshaft reluctor wheel for being mis-positioned on the crankshaft. 瀚慖f you find a condition with the crankshaft, repair as necessary. Repair Instructions Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure. * Timing Chain Alignment Diagram (See: Engine, Cooling and Exhaust/

2010 Cadillac Truck SRX AWD V6-3.0L Page 1020 * DTCs P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 are not set. * The engine is operating for greater than 2 s. * The engine must accelerate such that the camshaft position actuator system is commanded from the park position to the phased position. This is considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 s each in the phased position. * DTC P0016, P0017, P0018, and P0019 run continuously when the above conditions are met for approximately 10 min. Conditions for Setting the DTC The ECM detects the ECM learned camshaft position angle is greater than 10 degrees advanced or 10 degrees retarded in relationship to the crankshaft. OR The ECM detects the actual camshaft angle is advanced 15 degrees or retarded 21 degrees in relationship to the camshaft parked/reference position for greater than 10 s. Action Taken When the DTC Sets D

2010 Cadillac Truck SRX AWD V6-3.0L Page 494 * Front vertical downward switch terminal K * Rear vertical upward switch terminal F * Rear vertical downward switch terminal J * Horizontal forward switch terminal D * Horizontal rearward switch terminal C * Recline forward switch terminal H * Recline rearward switch terminal G 3. If all circuits test normal, test or replace the S64D driver seat adjuster switch. Component Testing 1. Ignition OFF, disconnect the harness connector at the S64D driver seat adjuster switch. 2. Test for infinite resistance between the ground terminal E and each seat direction signal terminal with the switch in the open position. 瀚慖f not the specified value, replace the S64D driver seat adjuster switch. 3. Test for less than 2 Ohms between the ground terminal E and each signal terminal with the appropriate switch in the closed position. 瀚慖f greater than the specified value, replace the S64D driver seat adjuster switch. Repair Instructions Perform the Diagnostic Re

2010 Cadillac Truck SRX AWD V6-3.0L Page 1166 瀚慖f less than the specified range, test for a short between the high voltage supply circuit and high voltage control circuit. If the circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s). 瀚慖f greater than the specified range, test the high voltage supply circuit and high voltage control circuit for an open/high resistance. If the circuits/connections test normal, test or replace the appropriate Q17 fuel injector. Component Testing * Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection )Fuel Injector Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection) * Fuel Injector Balance Test (LAU) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector Balance Test)Fuel Injector Balance

2010 Cadillac Truck SRX AWD V6-3.0L Page 1014 The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump control module monitors the voltage signal from the fuel pressure sensor. Conditions for Running the DTC * The engine is running. * DTC P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active. * DTC P0641 has not failed this ignition cycle. * Fuel pump control is enabled and the fuel pump control state is normal. * The engine has been running for at least 5 seconds. Conditions for Setting the DTC The fuel pump control module does not detect a change in the fuel pressure of at least 30 kPa (4.4 psi) when the fuel pump is operating. The fuel pressure sensor performance diagnostic provides a means to detect fuel pressure sensor output that is stuck within the normal operating range of the sensor. Action Taken When the DTC Sets DTC P018B, P018C and P018D are Type A DTCs. Conditions for Clearin

2010 Cadillac Truck SRX AWD V6-3.0L Page 1311 * Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit 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 Control Module References

2010 Cadillac Truck SRX AWD V6-3.0L Page 931 * Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit Testing/Circuit Testing) * Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Connector Repairs/Connector Repairs) * Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring Repairs/Heated Oxygen Sensor Wiring 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 Powertr

2010 Cadillac Truck SRX AWD V6-3.0L Page 1547 DTC P0522 - Engine Oil Pressure Sensor Circuit Low Voltage DTC P0523 - Engine Oil Pressure Sensor Circuit High Voltage Diagnostic Fault Information Circuit/System Description The engine oil pressure sensor changes voltage based on the engine oil pressure. The engine oil pressure sensor is a 3-wire sensor comprised of the signal circuit, the low reference circuit and the 5 V reference circuit. The engine control module (ECM) supplies 5 V to the engine oil pressure sensor via the 5 V reference circuit and provides ground via the engine oil pressure sensor low reference circuit. The ECM monitors the signal circuit of the engine oil pressure sensor to determine the engine oil pressure sensor voltage is within the normal operating range of approximately 1-4 V. When the engine oil pressure is high, the engine oil pressure sensor voltage is high and the sensor senses a high signal voltage. When the engine oil pressure is low, the engine oil pressu

2010 Cadillac Truck SRX AWD V6-3.0L Page 19

2010 Cadillac Truck SRX AWD V6-3.0L Page 1356 * Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 1) * Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 2) * Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming P0268 DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, or P0277 (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: Test

2010 Cadillac Truck SRX AWD V6-3.0L Page 523 the module. This reference point is biased to approximately 2.5 V. Before the rear seat heating 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 The rear seat heating control module must be powered. Conditions for Setting the DTC B2345 13 Any temperature sensor input that remains below 1.5 V for more than 1 second. Action Taken When the DTC Sets The heated seat function for both rear seats will be disabled. Conditions for Clearing the DTC * The current DTC will clear and set the code to history 3 seconds after the reference voltage returns to the normal operating range and the ignition is cycled OFF then back to ACC or RUN. * The history DTC w

2010 Cadillac Truck SRX AWD V6-3.0L Page 1309 瀚慖f less than specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 ECM. 瀚慖f greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM. 6. Install a 3 A fused jumper wire between TP sensor 1 signal circuit terminal D and the 5 V reference circuit terminal E. Verify the scan tool TP sensor 1 voltage parameter is greater than 4.8 V. 瀚慖f less than the specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 ECM. 7. If all circuits test normal, test or replace the Q38 throttle body assembly. Repair Instructions Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair. * Throttle Body Assembly Replacement (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Throttle

2010 Cadillac Truck SRX AWD V6-3.0L Page 861 * 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) * Control Module References (See: Testing and Inspection/Programming and Relearning)for module replacement, setup and programming C0720 DTC C0720 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 Descript

2010 Cadillac Truck SRX AWD V6-3.0L Page 486 * 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 Ignition ON, observe the scan tool Seat Memory Control Module seat switch parameters listed below while pressing and releasing the appropriate seat directional switch. The readings should change between Inactive and Forward/Rearward or UP/Down. * Driver Seat Cushion Front Vertical Switch * Driver Seat Cushion Rear Vertical Switch * Driver Seat Horizontal Switch * Driver Seat Back Switch Circuit