Saturday, October 30, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 2131

2010 Cadillac Truck SRX FWD V6-3.0L Page 2131



- Torque Converter Clutch (TCC) Pressure Control Solenoid Valve Performance



DTC P2763



- Torque Converter Clutch (TCC) Pressure Control Solenoid Valve Control Circuit High Voltage



DTC P2764



- Torque Converter Clutch (TCC) Pressure Control Solenoid Valve Control Circuit Low Voltage



Diagnostic Fault Information



Typical Scan Tool Data



Circuit/System Description



Based on input speed and output speed signals, signals from the engine control module (engine speed and throttle opening) and vehicle speed,



smooth lock-up control and slip is performed through the lock-up control solenoid (SLU). The SLU is linearly turned ON and OFF. The lock-up



clutch inside the torque converter is operated, and the pump impeller and turbine runner are connected. Through this, the engine and the automatic



transmission are coupled and engine output is connected directly to the automatic transmission, eliminating transmission loss. By sliding the



lock-up clutch when lock-up is in the OFF range, extends the lock-up range to low vehicle speeds. It also suppresses a rise in engine speed and



increases transmission efficiency, improving fuel economy and at the same time, through the sliding of the lockup clutch, engine vibration can be



absorbed by the torque converter.



Conditions for Running the DTC



P2759



* The ignition voltage is 10.2-15.5 V.



* The engine speed is greater than 400 RPM for 2 s.



* The transmission is not in emergency mode.



* Driving in D range.



* Transmission Control Module (TCM) communication is normal.



* DTCs P2763 and P2764 are not set.



P2762



* The ignition voltage is 10.2-15.5 V.



* The engine speed is greater than 400 RPM for 2 s.



* The transmission is not in emergency mode.



* Driving in D range.



* TCM communication is normal.



* The Automatic Transmission Fluid Temperature is more than 20掳C (68掳F).



* SLU current is more than 0.85 A.



* SLU current is not changed.



P2763



* The ignition voltage is 10.2-15.5 V.



* The engine speed is greater than 400 RPM for 2 s.



* The transmission is not in emergency mode.



* Driving in D range.



* TCM communication is normal.



* DTC P2764 is not set.



P2764



* The ignition voltage is 10.2-15.5 V.



* The engine speed is greater than 400 RPM for 2 s.



* The transmission is not in emergency mode.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1467

2010 Cadillac Truck SRX FWD V6-3.0L Page 1467



Circuit/System Description



The ignition system on this engine uses an individual coil/module for each cylinder. The engine control module (ECM) controls the spark event for



each cylinder through the eight individual ignition control circuits. When the ECM commands the ignition control circuit ON, electrical current will



flow through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM will command the



ignition control circuit OFF, interrupting current flow through the primary winding. The magnetic field created by the primary winding will



collapse across the secondary coil windings, producing a high voltage across the spark plug electrodes. The ECM uses information from the



crankshaft position sensor, and the camshaft position sensor for sequencing and timing of the spark events.



Conditions for Running the DTC



* The engine is running.



* The ignition voltage is greater than 6 V.



* DTC P0351-P0356 runs continuously when the above conditions are met.



Conditions for Setting the DTC



The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.



Action Taken When the DTC Sets



DTCs P0351-P0356 are Type B DTCs.



Conditions for Clearing the MIL/DTC



DTCs P0351-P0356 are Type B DTCs.



Diagnostic Aids



A high resistance condition on any ignition control circuit can cause an engine misfire without setting DTC P0351-P0356.



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



Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic



Ignition System Description)



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 Procedures/Wiring



Repairs/Wiring Repairs)

Friday, October 29, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 1677

2010 Cadillac Truck SRX FWD V6-3.0L Page 1677



DTCs P0711, P0712, and P0713 are Type B DTCs.



Diagnostic Aids



The transmission control module (TCM) temperature sensor is located inside of the control solenoid valve assembly and its output should resemble



that of the transmission fluid temperature (TFT) sensor's output.



Reference Information



Connector End View Reference



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



* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)



Description and Operation



Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -



Automatic Transmission/Electronic Component Description) for control solenoid valve assembly



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



Circuit/System Verification



1. Engine idling at 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 control solenoid valve assembly.



2. Operate the vehicle at 64 km/h (40 mph) for 10 minutes. Monitor the TCM Temperature, TCM Power up Temperature, and the Trans. Fluid



Temp. parameters with a scan tool. The TCM Temperature and the Trans. Fluid Temp. parameters should be within 25掳C (45掳F) of each



other, and the Trans. Fluid Temp. and TCM Power up Temperature parameters should be within 25掳C (45掳F) of each other.



瀚慖f both are greater than the specified range, replace the 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



Important:



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



Inspection/Programming and Relearning) following all transmission related repairs.



* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See:



Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General



Diagnostics/6T70/6T75 - Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).



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



Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement, setup,



and programming



AF40-6 - Automatic Transmission

2010 Cadillac Truck SRX FWD V6-3.0L Page 1378

2010 Cadillac Truck SRX FWD V6-3.0L Page 1378



* 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



P0277



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: 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 P0201



- Cylinder 1 Injector Control Circuit



DTC P0202



- Cylinder 2 Injector Control Circuit



DTC P0203



- Cylinder 3 Injector Control Circuit



DTC P0204



- Cylinder 4 Injector Control Circuit



DTC P0205



- Cylinder 5 Injector Control Circuit



DTC P0206



- Cylinder 6 Injector Control Circuit



DTC P0261



- Cylinder 1 Injector Control Circuit Low Voltage



DTC P0262



- Cylinder 1 Injector Control Circuit High Voltage



DTC P0264



- Cylinder 2 Injector Control Circuit Low Voltage



DTC P0265



- Cylinder 2 Injector Control Circuit High Voltage



DTC P0267



- Cylinder 3 Injector Control Circuit Low Voltage



DTC P0268



- Cylinder 3 Injector Control Circuit High Voltage



DTC P0270



- Cylinder 4 Injector Control Circuit Low Voltage



DTC P0271



- Cylinder 4 Injector Control Circuit High Voltage



DTC P0273



- Cylinder 5 Injector Control Circuit Low Voltage



DTC P0274



- Cylinder 5 Injector Control Circuit High Voltage

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 10-08-45-001D Date: 130214

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 10-08-45-001D Date: 130214



Electrical - Ground Repair Information



INFORMATION



Bulletin No.: 10-08-45-001D



Date February 14, 2013



Subject: Information for Electrical Ground Repair Use New Replacement Fasteners with Conductive Finish



Models:



2014 and Prior GM Passenger Cars and Trucks



Supercede:



This bulletin is being revised to add the 2013 and 2014 model years and remove the Saab Warranty Information section. Please discard Corporate



Bulletin Number 10-08-45-001C (Section 08 - Body and Accessories).



Electrical Ground Repair Overview



Proper electrical system function relies on secure, stable and corrosion-free electrical ground connections. Loose, stripped, or corroded connections



increase the possibility of improper system function and loss of module communication. These conditions may also lead to unnecessary repairs and



component replacement.



In general, electrical ground connections are accomplished using one, or a combination of the following attachment methods:



- Welded M6 stud and nut



- Welded M6 nut and bolt



- Welded M8 nut and bolt



Determine which attachment method is used and perform the appropriate or alternative repair as described in this bulletin.



M6 Weld Stud Replacement



Caution



Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.



1. Select a location adjacent the damaged or missing M6 ground stud having 20 mm (0.79 in) clearance behind the panel surface and 20 mm



(0.79 in) clearance surrounding the M6 conductive rivet stud flange.



2. Using GM approved residue-free solvent or equivalent, remove any grease from the repair site and allow to dry.



Note



Ensure 20 mm (0.79 in) clearance is maintained behind the panel to be drilled.



2010 Cadillac Truck SRX FWD V6-3.0L Page 296



3. Drill a 10 mm (0.40 in) diameter hole through the panel.



4. Remove paint and primer from the area surrounding the 10 mm (0.40 in) hole until bare metal is visible.



Important



The M6 conductive rivet stud as shown, can accommodate a panel thickness range of 0.7-4.2 mm (0.03-0.17 in). If there are layers of



sheet metal, they should be touching without any air gaps to ensure a good ground.



5. Select a M6 conductive rivet stud. Refer to the Parts Information section of this bulletin.



Note



Use the GE-50317 rivet stud tool kit.



6. Place the M6 conductive rivet stud (1) in the 10 mm (0.40 in) hole. Assemble the rivet stud tool (2) with the groove and flare side facing the



rivet stud, then the washer and the M6 nut (3).



7. Using a wrench on the rivet stud tool, and a socket on the M6 nut, secure the M6 conductive rivet stud.



8. Ensure the rivet stud is securely fastened, WITHOUT ANY detectable movement.



9. Completely wrap the threads of the rivet stud with painters tape or equivalent.



2010 Cadillac Truck SRX FWD V6-3.0L Page 297



Note



The rivet stud and surrounding panel area MUST BE properly refinished PRIOR to the installation of the ground wire terminal and



conductive nut to maintain a secure, stable and corrosion-free electrical ground.



10. Refinish the repair area using an anti-corrosion primer. Refer to Anti-Corrosion Treatment and Repair in SI.



11. Allow the refinished repair area to cure sufficiently before removing the protective material applied to the rivet stud threads.



12. Remove the painters tape or equivalent from the rivet stud threads.



13. Using GM approved residue-free solvent or equivalent, thoroughly clean the rivet stud threads to remove any adhesive and allow to dry.



14. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive rivet stud.



Note



Fretting corrosion is a build-up of insulating, oxidized wear debris that can form when there is a small motion between electrical



contacts. The oxidized wear debris can accumulate at the electrical contact points causing the electrical resistance across the



connection to increase.



15. Carefully remove ANY corrosion or contamination that may be present on the electrical ground wire terminal.



16. Install the electrical ground wire terminal to the rivet stud.



17. Select a M6 conductive nut. Refer to the Parts Information section of this bulletin.



18. Install the M6 conductive nut to the rivet stud and:



Tighten



Tighten to 8 Nm (71 lb in).



19. Verify proper system operation.



M6 Weld Nut



Caution



Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.



1. If the M6 weld nut at the electrical ground location is damaged or stripped, a M7 conductive self-threading bolt may be used to secure the



ground wire terminal.



2. Using GM approved residue-free solvent or equivalent, remove any grease from the surface surrounding the weld nut and allow to dry.



3. Remove any loose metal particles from the damaged or stripped weld nut with a stiff brush.



4. Select a M7 conductive self-threading bolt. Refer to the Parts Information section of this bulletin



5. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M7 conductive



self-threading bolt.



Note



Fretting corrosion is a build-up of insulating, oxidized wear debris that can form when there is a small motion between electrical



contacts. The oxidized wear debris can accumulate at the electrical contact points causing the electrical resistance across the



connection to increase.



6. Carefully remove ANY corrosion or contamination that may be present on the electrical ground wire terminal.



7. Install the electrical ground wire terminal to the M7 conductive self-threading bolt.



8. Install the M7 conductive self-threading bolt and:



Tighten



Tighten to 9 Nm (80 lb in).



9. Verify proper system operation.



M6 Weld Nut Alternative Repair



Caution



Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.



2010 Cadillac Truck SRX FWD V6-3.0L Page 298



1. If the electrical ground location is accessible from both sides of the panel, a M6 conductive bolt and a M6 conductive nut may be used to



secure the electrical ground wire terminal. Refer to the Parts Information section of this bulletin.



2. Select a location adjacent the damaged M6 weld nut having 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in)



clearance surrounding the new electrical ground site.



3. Using GM approved residue-free solvent or equivalent, remove any grease from the surface surrounding the ground location and allow to



dry.



Note



Ensure 20 mm (0.79 in) clearance is maintained behind the panel to be drilled.



4. Drill a 8.5 mm (0.33 in) diameter hole through the panel.



5. Remove paint and primer from the area surrounding the 8.5 mm (0.33 in) hole until bare metal is visible.



6. Select a M6 conductive bolt. Refer to the Parts Information section of this bulletin.



7. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive bolt.



Note



Fretting corrosion is a build-up of insulating, oxidized wear debris that can form when there is a small motion between electrical



contacts. The oxidized wear debris can accumulate at the electrical contact points causing the electrical resistance across the



connection to increase.



8. Carefully remove ANY corrosion or contamination that may be present on the electrical ground wire terminal.



9. Install the electrical ground wire terminal and the M6 conductive bolt to the ground location.



10. Select a M6 conductive nut. Refer to the Parts Information section of this bulletin.



11. Install the M6 conductive nut to the bolt and:



Tighten



Tighten to 8 Nm (71 lb in).



Note



The repair area MUST BE properly refinished to maintain a secure, stable and corrosion-free electrical ground.



12. Refinish the repair area using an anti-corrosion primer. Refer to Anti-Corrosion Treatment and Repair in SI.



13. Verify proper system operation.



M8 Weld Nut



Caution



Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.



1. If the M8 weld nut electrical ground location is accessible from both sides of the panel, a M8 conductive bolt and a M8 conductive nut may



be used to secure the electrical ground wire terminal. Refer to the Parts Information section of this bulletin.



2. Select a location adjacent the M8 weld nut having 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in) clearance



surrounding the new electrical ground site.



3. Using GM approved residue-free solvent or equivalent, remove any grease from the surface surrounding the ground location and allow to



dry.



Note



Ensure 20 mm (0.79 in) clearance is maintained behind the panel to be drilled.



4. Drill a 10 mm (0.40 in) diameter hole through the panel.



5. Remove paint and primer from the area surrounding the 10 mm (0.40 in) hole until bare metal is visible.



6. Select a M8 conductive bolt. Refer to the Parts Information section of this bulletin.



7. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M8 conductive bolt.



Note



2010 Cadillac Truck SRX FWD V6-3.0L Page 299



Fretting corrosion is a build-up of insulating, oxidized wear debris that can form when there is a small motion between electrical



contacts. The oxidized wear debris can accumulate at the electrical contact points causing the electrical resistance across the



connection to increase.



8. Carefully remove ANY corrosion or contamination that may be present on the electrical ground wire terminal.



9. Install the electrical ground wire terminal and the M8 conductive bolt to the ground location.



10. Select a M8 conductive nut. Refer to the Parts Information section of this bulletin.



11. Install the M8 conductive nut to the bolt and:



Tighten



Tighten to 22 Nm (16 lb ft).



Note



The repair area MUST BE properly refinished to maintain a secure, stable and corrosion-free electrical ground.



12. Refinish the repair area using an anti-corrosion primer. Refer to Anti-Corrosion Treatment and Repair in SI.



13. Verify proper system operation.



M8 Weld Nut Alternative Repair



Caution



Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.



1. If the M8 weld nut electrical ground location is not accessible from both sides of the panel, a M6 conductive rivet stud and a M6 conductive



nut may be used to secure the electrical ground wire terminal.



2. Select a location adjacent the damaged M8 weld nut having 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in)



clearance surrounding the M6 conductive rivet stud flange.



3. Using GM approved residue-free solvent or equivalent, remove any grease from the repair site and allow to dry.



Note



Ensure 20 mm (0.79 in) clearance is maintained behind the panel to be drilled.



4. Drill a 10 mm (0.40 in) diameter hole through the panel.



5. Remove paint and primer from the area surrounding the 10 mm (0.40 in) until bare metal is visible.



Important



The M6 conductive rivet stud as shown, can accommodate a panel thickness range of 0.7-4.2 mm (0.03-0.17 in). If there are layers of



sheet metal, they should be touching without any air gaps to ensure a good ground.



2010 Cadillac Truck SRX FWD V6-3.0L Page 300



6. Select a M6 conductive rivet stud. Refer to the Parts Information section of this bulletin.



Note



Use the GE-50317 rivet stud tool kit.



7. Place the M6 conductive rivet stud (1) in the 10 mm (0.40 in) hole. Assemble the rivet stud tool (2) with the groove and flare side facing the



rivet stud, then the washer and the M6 nut (3).



8. Using a wrench on the rivet stud tool, and a socket on the M6 nut, secure the M6 conductive rivet stud.



9. Ensure the new rivet stud is securely fastened, WITHOUT ANY detectable movement.



10. Completely wrap the threads of the rivet stud with painters tape or equivalent.



Note



The rivet stud and surrounding panel area MUST BE properly refinished PRIOR to the installation of the electrical ground wire



terminal and conductive nut to maintain a secure, stable and corrosion-free electrical ground.



11. Refinish the repair area using an anti-corrosion primer. Refer to Anti-Corrosion Treatment and Repair in SI.



12. Allow the refinished repair area to cure sufficiently before removing the protective material applied to the rivet stud threads.



13. Remove the painters tape or equivalent from the rivet stud threads.



14. Using GM approved residue-free solvent or equivalent, thoroughly clean the rivet stud threads to remove any adhesive and allow to dry.



15. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive rivet stud.



Note



Fretting corrosion is a build-up of insulating, oxidized wear debris that can form when there is a small motion between electrical



contacts. The oxidized wear debris can accumulate at the electrical contact points causing the electrical resistance across the



connection to increase.



16. Carefully remove ANY corrosion or contamination that may be present on the electrical ground wire terminal.



17. Install the electrical ground wire terminal to the M6 conductive rivet stud.



18. Select a M6 conductive nut. Refer to the Parts Information section of this bulletin.



19. Install the M6 conductive nut to the rivet stud and:



Tighten



Tighten to 8 Nm (71 lb in)



20. Verify proper system operation.



2010 Cadillac Truck SRX FWD V6-3.0L Page 301



Parts Information



Warranty Information



For vehicles repaired under warranty, use the table.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1470

2010 Cadillac Truck SRX FWD V6-3.0L Page 1470



The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.



Action Taken When the DTC Sets



DTCs P0351-P0356 are Type B DTCs.



Conditions for Clearing the MIL/DTC



DTCs P0351-P0356 are Type B DTCs.



Diagnostic Aids



A high resistance condition on any ignition control circuit can cause an engine misfire without setting DTC P0351-P0356.



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



Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic



Ignition System Description)



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 Procedures/Wiring



Repairs/Wiring Repairs)



Scan Tool Reference



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



Circuit/System Verification



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



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



* Ignition Coil 1-6 Control Circuit Open Test Status



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



Each parameter should display Not Run or OK.



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



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



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



Circuit/System Testing



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



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



the ground circuit terminal A and ground.



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



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



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



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



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

2010 Cadillac Truck SRX FWD V6-3.0L Page 867

2010 Cadillac Truck SRX FWD V6-3.0L Page 867



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 C0750 03



- Left Front Tire Pressure Sensor Low Voltage



DTC C0750 29



- Left Front Tire Pressure Sensor Too Few Pulses



DTC C0750 39



- Left Front Tire Pressure Sensor Internal Malfunction



DTC C0755 03



- Right Front Tire Pressure Sensor Low Voltage



DTC C0755 29



- Right Front Tire Pressure Sensor Too Few Pulses



DTC C0755 39



- Right Front Tire Pressure Sensor Internal Malfunction



DTC C0760 03



- Left Rear Tire Pressure Sensor Low Voltage



DTC C0760 29



- Left Rear Tire Pressure Sensor Too Few Pulses



DTC C0760 39



- Left Rear Tire Pressure Sensor Internal Malfunction



DTC C0765 03



- Right Rear Tire Pressure Sensor Low Voltage



DTC C0765 29



- Right Rear Tire Pressure Sensor Too Few Pulses



DTC C0765 39



- Right Rear Tire Pressure Sensor Internal Malfunction



Circuit/System Description



The tire pressure monitor (TPM) system has a radio frequency (RF) transmitting pressure sensor in each wheel/tire assembly. As vehicle speed



increases, centrifugal force closes the sensors internal roll switch, which puts the sensor into Rolling mode. The body control module (BCM)



receives and translates the data contained in the tire pressure sensor RF transmissions into sensor presence, sensor mode, and tire pressure. Once



vehicle speed is greater than 40km/h (25 mph), the BCM waits for the first sensor to go into Rolling mode, then checks if all sensors have gone into



Rolling mode. If one or more sensors do not go into these modes, or do not transmit at all, the BCM will set DTC C0750, C0755, C0760, or C0765



respectively.



Conditions for Running the DTC



Vehicle speed is greater than 40 km/h (25 mph).



Conditions for Setting the DTC



* A sensor does not transmit for 18 minutes.



* A sensor low battery condition.



Action Taken When the DTC Sets



* The tire pressure monitor indicator icon on the instrument panel cluster (IPC) flashes for 1 minute and then remains illuminated after the



ignition switch is cycled ON and the IPC bulb check is complete.