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2010 Cadillac Truck SRX AWD V6-3.0L Page 1105 Action Taken When the DTC Sets * DTCs P0090, P0091, P0092, P00C8, P00C9, and P00CA are Type A DTCs. * A message center or an indicator displays Reduced Engine Power. Conditions for Clearing the DTC DTCs P0090, P0091, P0092, P00C8, P00C9, and P00CA are Type A DTCs. Reference Information Schematic Reference Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics (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 Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Fuel System Description)Fuel System Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Fuel System Description) Ele...

2010 Cadillac Truck SRX AWD V6-3.0L Page 627 Circuit/System Verification Verify DTC B3122, B3123, or B3124 is not set. If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle). Circuit/System Testing 1. Ignition OFF, disconnect the harness connector at the T10G rear fascia keyless entry antenna. 2. Ignition ON, test for less than 1 V between the signal circuit terminal 1 and ground. 瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K84 keyless entry control module. 3. Ignition OFF, install a DMM between the signal circuit terminal 1 and ground. Set the DMM to capture DC voltage using the MIN MAX function. 4. Lock the vehicle using the keyless entry transmitter. 5. Activate the antenna by pressing the rear closure touch pad. Verify the MAX voltage captured by the DMM is greater than.5 V. 瀚慖f less th...

2010 Cadillac Truck SRX AWD V6-3.0L Page 417 4. Command the Park Assist Switch LED output control OFF with the scan tool. Test for less than 0.3 V between the ignition circuit terminal 3 and the signal circuit terminal 6. 瀚慖f greater than the specified value, test the signal circuit for a short to ground. If all circuits test normal, replace the K41 parking assist control module. 5. If all circuits test normal, replace the S48E multi-function switch module - center console. Repair Instructions Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure. * Accessory Switch Replacement (See: Instrument Panel, Gauges and Warning Indicators/Service and Repair) * Control Module References (See: Testing and Inspection/Programming and Relearning) for parking assist control module replacement, programming and setup B0968 DTC B0967 or B0968 Diagnostic Instructions * Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Init...

2010 Cadillac Truck SRX AWD V6-3.0L Page 856 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 Vertical Wheel Acceleration parameters. The parameters should be 0 m/s(2) when the vehicle is parked on a level surface. Circuit/System Testing 1. Ignition ON, verify that DTC C0870 is not present. 瀚慖f the DTC is present, refer to DTC C0870 (See: C Code Charts/C0870) to diagnose that DTC prior to this diagnostic. 2. Ignition OFF, disconnect the harness connector at the appropriate B161 vertical suspension acceleration sensor. 3. Ignition OFF, open/close doors, and wait 60 seconds. Test for less than 5 ohm between the low reference circuit terminal C and ground. 瀚慖f greater than the specified value, test the low reference circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace the K19 Suspensi...

2010 Cadillac Truck SRX AWD V6-3.0L Page 776 the K17 EBCM. 3. Install a 3 A fused jumper wire at the signal circuit terminal B. Verify the scan tool Wheel Speed Sensor parameter changes while rapidly tapping the fused jumper wire to the low reference circuit terminal A. 瀚慖f no change is observed, disconnect the harness connector at the K17 EBCM and test for the following conditions below. If all circuits test normal, replace the K17 EBCM. * Signal circuit for short to voltage. * Low reference circuit for a short to voltage, short to ground, or an open/high resistance. 4. If all circuits test normal, test or replace the B5 wheel speed sensor. Component Testing 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. ...

2010 Cadillac Truck SRX AWD V6-3.0L Page 923 DTC P00C9 - Fuel Pressure Regulator High Control Circuit Low Voltage DTC P00CA - Fuel Pressure Regulator High Control Circuit High Voltage Diagnostic Fault Information Circuit/System Description High pressure fuel is regulated by the high pressure fuel pump actuator, which is a part of the high pressure fuel pump. The high pressure fuel pump actuator is a solenoid valve. The ECM provides battery voltage on the actuator high control circuit and ground on the actuator low control circuit. Both circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit driver energizes the high pressure fuel pump actuator and the low control circuit driver pulse-width modulates (PWM) the low control circuit to ground. The ECM monitors the voltage on the circuits to detect a failure. Conditions for Running the DTC * The ignition voltage is between 11-18 V. * The DTCs run co...

2010 Cadillac Truck SRX AWD V6-3.0L Page 514 Conditions for Clearing the DTC * The current DTC will clear and set the code to history 3 seconds after the reference voltage returns to normal operating range and the ignition is cycled OFF then back to ACC or RUN. * The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred. Reference Information Schematic Reference Heated/Cooled Seat Schematics (See: Body and Frame/Seats/Seat Temperature Element/Diagrams/Electrical Diagrams) Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Heated/Vented Seat Description and Operation (See: Body and Frame/Seats/Seat Temperature Element/Description and Operation/Heated/Vented Seat) Electrical Information Reference * Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit Testing/Circuit Testing) * Connecto...

2010 Cadillac Truck SRX AWD V6-3.0L Page 798 瀚慖f any listed DTC is present, perform the Multi-Axis Acceleration Sensor Module Programming and Setup (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Multi-Axis Acceleration Sensor Module Programming and Setup) and the Vehicle Yaw Sensor Learn (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Vehicle Yaw Sensor Learn). 3. Inspect the B119 Multi-axis Acceleration Sensor for correct installation. 瀚慖f loose or incorrect installation is diagnosed, correct the installation of the component and perform the Vehicle Yaw Sensor Learn (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Vehicle Yaw Sensor Learn). 4. Ignition OFF, disconnect the harness connector at the B119 Multi-axis Acceleration Sensor. 5. Ignition OFF and all vehicle systems OFF. It may ...

2010 Cadillac Truck SRX AWD V6-3.0L Page 655 B3205 00, B3210 00 The BCM has detected that the compatibility code stored in the affected window motor does not match the compatibility code stored in the BCM. B3205 39, B3210 39, B3215 39, B3220 39 An internal malfunction has been detected by the BCM in the power window motor while commanding the window UP or DOWN. B3205 42, B3210 42 The BCM will automatically attempt to download the calibration program into the appropriate window motor (As will occur when the window motor has been replaced), if the first calibration program fails to load, the BCM will attempt to download the calibration program a second time. If this download fails, the BCM will set appropriate DTC. B3205 4B, B3210 4B The BCM detects that a window motor is "not normalized" which will occur under the following conditions: * When the battery has been disconnected * When the battery has been replaced * When the door wiring harness has been disconnected * When the w...

2010 Cadillac Truck SRX AWD V6-3.0L Page 756 The EBCM disables the hill start assist for the duration of the ignition cycle. Conditions for Clearing the DTC * A current DTC clears when the diagnostic runs and passes. * The EBCM will turn OFF the indicator in the next ignition cycle. Diagnostic Aids DTC C0186 and C0287 may set after replacing the Multi-Axis Acceleration Sensor if the sensor is not configured and setup. Perform the Multi-Axis Acceleration Sensor Module Programming and Setup (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Multi-Axis Acceleration Sensor Module Programming and Setup) and the Vehicle Yaw Sensor Learn (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Vehicle Yaw Sensor Learn) procedures to complete the configuration and setup. Reference Information Schematic Reference Antilock Brake System Schematics (See: Brakes and Traction C...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1056 2. Start the engine. 3. Verify the DTC does not reset. P052B DTC P052B, P052D, P054B, or P054D 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 P052B - Cold Start Intake Camshaft Position System Performance Bank 1 - Retarded DTC P052D - Cold Start Intake Camshaft Position System Performance Bank 2 - Retarded DTC P054B - Cold Start Exhaust Camshaft Position System Performance Bank 1 - Retard...

2010 Cadillac Truck SRX AWD V6-3.0L Page 300 Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure. * Headlamp Replacement (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement) * Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center)) * Control Module References (See: Testing and Inspection/Programming and Relearning) for headlamp control module replacement, setup and programming B257B DTC B1405, B1529, or B257B Diagnostic Instructions * Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System Check - Vehicle) prior to usi...

2010 Cadillac Truck SRX AWD V6-3.0L Page 651 Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Power Windows Description and Operation (See: Windows and Glass/Windows/Description and Operation/Power Windows) 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 and Poor Connections) * Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Proced...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1550 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 Q46 Air Conditioning Compressor Valve. 2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground. 瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the FRT HVAC Fuse circuit open, test or replace the Q46 Air Conditioning Compressor Valve. 3. Verify that a test lamp does not illuminate between the B+ circuit terminal 2 and the control circuit terminal 1. 瀚慖f the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the K33 HVAC Control Module. 4. Remove the test lamp. 5. Command the A/C compressor ON with a scan tool. Verify the scan tool A/C Compressor Re...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1296 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 connects to the cooler, which is in the radiator. From the cooler, the oil returns through the oil cooler return line and enters the lubrication circuits. After lubricating the internal components, the oil returns to the oil pan. The transmission fluid temperature sensor is located in the control solenoid valve assembly. Conditions for Running the DTC * The ignition voltage is between 10.2-15.5 V. * The engine speed is greater than 400 RPM for 2 s. * The transmission is not in emergency mode. * Transmission control module (TCM) communication is normal. Conditions for Setting the DTC * Vehicle speed less than 180 km/h (112 MPH) and transmission fluid temperature more than 150掳C (302掳F) for ...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1044 5. Test for 2.6-4.6 V between the control circuit terminal 2 and ground. 瀚慖f the voltage is not within the specified range, replace the K20 ECM. 6. If all circuits test normal, test or replace the Q40 turbocharger bypass solenoid valve. Component Testing 1. Ignition OFF, disconnect the harness connector at the Q40 turbocharger bypass solenoid valve. 2. Test for 12-60 ohm between the control terminal 2 and the ignition terminal 1 of the Q40 turbocharger bypass solenoid valve. 瀚慖f not within the specified range, replace the Q40 turbocharger bypass solenoid valve. 3. Test for infinite resistance between each terminal and the Q40 turbocharger bypass solenoid valve housing. 瀚慖f not the specified value, replace the Q40 turbocharger bypass solenoid valve. Repair Instructions Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure. * Turbocharger Disassemble () * Control Module References (See:...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1253 Scan Tool Reference Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information Circuit/System Verification 1. Observe the scan tool DTC information, verify DTC P0627, P0628, P0629, P069E or U0109 is not set. 瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle). 2. Engine idling, observe the scan tool Fuel Rail Pressure Sensor parameter. The pressure should be approximately 1.9-2.1 Mpa (279-305 psi). 3. Engine idling, the scan tool Fuel Rail Pressure Sensor should be close to the scan tool Desired Fuel Rail Pressure. As the engine speed increases, the Desired Fuel Rail Pressure and the Fuel Rail Pressure Sensor should closely match each other. 4. Move related harnesses/connectors of the B47 fuel rail fuel pressure sensor and verify the engine does not stumble, stall, or chang...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1304 P2135 * DTCs P0121, P0122, P0123, P0222, P0223, or P06A3 are not set. * The ignition is ON, or the engine is running. * The engine is not operating in reduced power mode. * The ignition voltage is greater than 6 V. * The DTCs runs continuously when the above conditions are met. Conditions for Setting the DTC P0121 The ECM detects that the TP sensor 1 voltage is stuck in range for less than 1 s. P0122 The ECM detects that the TP sensor 1 voltage is less than 0.3 V for less than 1 s. P0123 The ECM detects that the TP sensor 1 voltage is greater than 4.8 V for less than 1 s. P0222 The ECM detects that the TP sensor 2 voltage is less than 0.3 V for less than 1 s. P0223 The ECM detects that the TP sensor 2 voltage is greater than 4.6 V for less than 1 s. P2135 The ECM detects that TP sensor 1 and TP sensor 2 disagree greater than 7-10 percent for less than 1 s. Action Taken When the DTC Sets P0121 * DTC P0121 is a type B DTC * The ECM commands t...

2010 Cadillac Truck SRX AWD V6-3.0L Page 62 An incorrectly installed CPA or incorrectly seated connector can cause a shorting bar to short both control circuits together. Check the connectors and CPAs if a DTC with symptom byte 02 or 0E is set, to ensure that the shorting bars are not causing the circuits to be shorted together. Shorting bars locations are listed below: * Inline connectors - on the seat belt anchor pretensioner side of the harness connector * Harness side of the SDM connector Terminal fretting, an incorrectly installed CPA, or incorrectly seated connector can cause an open/high resistance condition. Check the circuit terminals for fretting, incorrectly installed CPAs, or incorrectly seated connectors if a DTC with symptom byte 04 or 0D is set. If the seat belt anchor pretensioner has deployed under unexpected conditions and/or DTC with symptom byte 01 is set, check both control circuits for a short to voltage. Reference Information Schematic Reference SIR Schematics (S...

2010 Cadillac Truck SRX AWD V6-3.0L Page 378 At least one control output (of four possible outputs) of the appropriate stepper motor is shorted to ground or open when motor starts moving. Faults are not detected when motor is already running or target position is already reached. Action Taken When the DTC Sets B023A 02 * The affected output will be switched off for hardware protection. * All stepper motors are deactivated. B0223, B022A, B0233, B0408, B0418, B0428 or B3531 * The affected output will be switched off for hardware protection. * The affected stepper motor is deactivated. Conditions for Clearing the DTC The condition for setting the DTC is no longer present. Reference Information Schematic Reference HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams) Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Automatic HVAC Description and Operation (See: Heating...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1385 DTC P0302 - Cylinder 2 Misfire Detected DTC P0303 - Cylinder 3 Misfire Detected DTC P0304 - Cylinder 4 Misfire Detected DTC P0305 - Cylinder 5 Misfire Detected DTC P0306 - Cylinder 6 Misfire Detected Circuit/System Description The engine control module (ECM) uses information from the crankshaft position sensor and the camshaft position sensors in order to determine when an engine misfire is occurring. By monitoring variations in the crankshaft rotation speed for each cylinder, the ECM is able to detect individual misfire events. A misfire rate that is high enough can cause 3-way catalytic converter damage. The malfunction indicator lamp (MIL) will flash ON and OFF when the conditions for catalytic converter damage are present. DTCs P0301 through P0306 correspond to cylinders 1 through 6. If the ECM is able to determine that a specific cylinder is misfiring, the DTC for that cylinder will set, and the corresponding fuel injector is disabled....

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2010 Cadillac Truck SRX AWD V6-3.0L Page 813 Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operation Brake Assist System Description and Operation (See: Brakes and Traction Control/Hydraulic System/Description and Operation/Brake Assist 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 and Poor Connections) * Wiring Repairs (See: Testing and Inspection/Component Tests ...

2010 Cadillac Truck SRX AWD V6-3.0L Page 836 Conditions for Clearing the DTC C0574 02 and C0574 04 * The condition for setting the DTC is no longer present. * The circuit is not tested unless the ignition is cycled. C0574 13 and C0574 14 * The temperature is within the limit for more than 30 s. * The circuit is tested with a frequency of 50 Hz. Diagnostic Aids C0574 13 and C0574 14 The DTCs C0574 13 and C0574 14 indicate that the rear differential clutch control module temperature is out of range. This is a temporary fault. The rear differential clutch control module is protected against running during critical temperatures. As soon as the temperature reaches normal values the actual DTC is cleared. Reference Information Schematic Reference Rear Axle Schematics (See: Transmission and Drivetrain/Differential Assembly/Diagrams/Electrical Diagrams) Connector End View Reference Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name) Description and Operati...

2010 Cadillac Truck SRX AWD V6-3.0L Page 282 DTC B251E 04 - Right Rear Door Unlatch High Control Circuit Open Diagnostic Fault Information Circuit/System Description The system is designed so that when the operator approaches a locked vehicle with the keyless entry transmitter, the keyless entry control module will detect the keyless entry transmitter and when an exterior door handle is pulled the keyless entry control module will command all doors to unlock and the door to unlatch allowing the door to be pulled open. Conditions for Running the DTC The system voltage is 9-16 V. Conditions for Setting the DTC B251A 01 The keyless entry control module detects a short to voltage on the passenger or left rear or right rear door latch motor unlatch low control circuit. B251A 02 The keyless entry control module detects a short to ground on the passenger or left rear or right rear door latch motor unlatch low control circuit. B251A 02 The BCM detects a short to ground on the passenger door lo...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1485 1. Ignition OFF, disconnect the KR25 secondary air injection pump relay. 2. Test for 70-110 ohm between terminals 85 and 86. 瀚慖f the resistance is not within the specified range, replace the KR25 secondary air injection pump relay. 3. Test for infinite resistance between the following terminals: * 86 and 87 * 86 and 30 * 85 and 87 * 87 and 30 瀚慖f not the specified value, replace the KR25 secondary air injection pump relay. 4. Install a 20 A fused jumper wire between relay terminal 86 and 12 V. Install a jumper wire between relay terminal 85 and ground. Test for less than 2 ohm between terminals 87 and 30. 瀚慖f greater than the specified range, replace the KR25 secondary air injection pump 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 an...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1152 Conditions for Running the DTC P0121 * DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0335, or P0336 is not set. * The engine speed is between 400-7,000 RPM. * The engine coolant temperature (ECT) is between 69-127掳C (156-260掳F). * The intake air temperature (IAT) is between -20 to +125掳C (-4 to +257掳F). * The DTC runs continuously when the above conditions are met. P0122, P0123, P0222, P0223 * DTC P06A3 is not set. * The ignition is ON, or the engine is running. * The engine is not operating in reduced power mode. * The ignition voltage is greater than 6 V. * The DTCs runs continuously when the above condition are met. P2135 * DTCs P0121, P0122, P0123, P0222, P0223, or P06A3 are not set. * The ignition is ON, or the engine is running. * The engine is not operating in reduced power mode. * The ignition voltage is greater than 6 V. * The DTCs runs continuously when the above conditions are met. Conditions for Setting the DTC P...

2010 Cadillac Truck SRX AWD V6-3.0L Page 1215 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 Note: All modules must be powered down or misdiagnosis may result. 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 circuits test normal, replace the K20 EC...