Saturday, June 6, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 877

2010 Cadillac Truck SRX AWD V6-3.0L Page 877



DTC C0890 03



- Control Module Voltage Reference Output 3 Circuit Low Voltage



DTC C0890 07



- Control Module Voltage Reference Output 3 Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an



analog voltage signal that will increase as the brake pedal is applied. The body control module provides a low reference signal and a 5 V reference



voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM



will apply battery voltage to the stop lamp control circuit and center high mounted stop lamp control circuit. When the control circuit is energized



the stop lamps are illuminated.



Conditions for Running the DTC



* Battery voltage must be between 9-16 V



* Brakes applied



Conditions for Setting the DTC



C0277 06 or C0890 03



* The BCM detects a short to ground or an open/high resistance in the brake pedal position sensor signal circuit.



* The BCM detects a short to ground or an open/high resistance in the brake pedal position sensor 5 V reference circuit.



C0277 07 or C0890 07



* The BCM detects a short to battery voltage in the brake pedal position sensor signal circuit.



* The BCM detects an open/high resistance in the brake pedal position sensor low reference circuit.



C0277 09



The BCM detects the brake pedal position sensor signal is changing faster than possible under normal operating conditions.



C0277 4B



The brake pedal position sensor home position is not learned.



Action Taken When the DTC Sets



Brake lights will malfunction, the shift lock is inoperative, the service park brake system lamp illuminated in IPC, park brake will set but not



disengage



Conditions for Clearing the DTC



* The DTC will be current for as long as the fault is present.



* When the fault is no longer present, the DTC will be a history DTC.



* A history DTC will clear after 50 ignition cycles.



Diagnostic Aids



C0277 4B



If the DTC is set, recalibrate the brake pedal position sensor.



C0277 09



If the DTC is set, replace the brake pedal position sensor. If the DTC resets, replace the BCM.

2010 Cadillac Truck SRX AWD V6-3.0L Page 663

2010 Cadillac Truck SRX AWD V6-3.0L Page 663



- Air Flow Control Circuit Short to Battery



DTC B0233 06



- Air Flow Control Circuit Low Voltage/Open



DTC B023A 02



- HVAC Actuators Supply Voltage Short to Ground



DTC B0408 01



- Main Temperature Control Circuit Short to Battery



DTC B0408 06



- Main Temperature Control Circuit Low Voltage/Open



DTC B0418 01



- Right Temperature Control Circuit Short to Battery



DTC B0418 06



- Right Temperature Control Circuit Low Voltage/Open



DTC B0428 01



- Rear Temperature Control Circuit Short to Battery



DTC B0428 06



- Rear Temperature Control Circuit Low Voltage/Open



DTC B3531 01



- Rear Air Flow Control Circuit Short to Battery



DTC B3531 06



- Rear Air Flow Control Circuit Low Voltage/Open



Circuit/System Description



Stepper motors are used for temperature regulation, air distribution control and recirculation door control.



With the appropriate switches at the Radio/HVAC control, the desired air temperature door position, air distribution door position and recirculation



door position can be put in. The selected values are passed to the HVAC control module via the LIN-Bus. The HVAC control module supplies a 12



V reference voltage to the stepper motors and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motors put the



appropriate door into the calculated position, in order to reach the put in temperature/position.



Conditions for Running the DTC



* Ignition ON.



* The HVAC control module is ON.



Conditions for Setting the DTC



B023A 02



The stepper motors supply output is shorted to ground.



B0223 01, B022A 01, B0233 01, B0408 01, B0418 01, B0428 01 or B3531 01



At least one control output (of four possible outputs) of the appropriate stepper motor is shorted to voltage when motor starts moving. Faults are not



detected when motor is already running or target position is already reached.



B0223 06, B022A 06, B0233 06, B0408 06, B0418 06, B0428 06 or B3531 06



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.

2010 Cadillac Truck SRX AWD V6-3.0L Page 90

2010 Cadillac Truck SRX AWD V6-3.0L Page 90



* The SDM requests the instrument cluster to illuminate the AIR BAG indicator.



* The SDM will store a DTC, however if an event occurs the system will still attempt deployments.



Conditions for Clearing the DTC



* The condition for setting the DTC no longer exists.



* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.



Diagnostic Aid



Note: The following diagnostic aids apply for both current and history DTCs.



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 the shorting bars are not causing the circuits to be shorted together. Shorting bars



are used in the locations listed below:



* Passenger instrument panel air bag



* Driver and passenger seat side air bags



* Left and right roof rail air bags



* Driver and passenger seat belt retractor pretensioners



* SDM



* Inline connectors - on the side of the harness connector



* Harness side of the SDM connector



Terminal fretting or incorrectly seated connector can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly



seated connector if a DTC with symptom byte 04 or 0D is set. If DTCs of deployment loops which are in the seat DTC B0014 and B0021, can



occur because of stress or damage to the harness due to seat movement. Move the seat to the full extend of travel while using the scan tool to



observe deployment type loop parameters.



If the pretensioner, passenger instrument panel or side air bag has inflated 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 (See: Diagrams/Electrical Diagrams/Air Bag Systems)



Connector End View Reference



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



Description and Operation



SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation/SIR System)



Electrical Information Reference



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



Testing/Circuit Testing)



* 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)



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



Procedures/Connector Repairs/Connector Repairs)



Scan Tool Reference



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



Circuit/System Verification



Note:



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



* Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or



replacement of the affected component/connector.



- Seat belt retractor pretensioner



- Passenger instrument panel air bag

2010 Cadillac Truck SRX AWD V6-3.0L Page 1085

2010 Cadillac Truck SRX AWD V6-3.0L Page 1085



DTC Descriptors



DTC P0601



- Control Module Read Only Memory Performance



DTC P0602



- Control Module Not Programmed



DTC P0603



- Control Module Long Term Memory Reset



DTC P0604



- Control Module Random Access Memory Performance



DTC P0606



- Control Module Processor Performance



DTC P062B



- Control Module Fuel Injector Control Performance



DTC P062F



- Control Module Long Term Memory Performance



DTC P0630



- VIN Not Programmed or Mismatched - Engine Control Module (ECM)



DTC P16F3



- Control Module Redundant Memory Performance



DTC P2610



- Control Module Ignition Off Timer Performance



Circuit/System Description



This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if



the ECM is not programmed, or is programmed incorrectly.



Conditions for Running the DTC



P0601, P062B, P0630, P16F3



These DTCs run continuously when the ignition is ON.



P0602, P0603, P062F



These DTCs run at power up.



P0604



DTC P0604 runs continuously when the ignition is ON. First memory scan may take up to 30 s.



P0606



* System voltage is greater than 6 V.



* Reduced engine power is not active.



* DTC P0606 runs continuously when the above conditions are met.



P2610



* The intake air temperature is between -40 to +80掳C (-40 to +176掳F).



* DTCs P0111, P0112, P0113 are not set.



* DTC P2610 runs on ECM power down.



Conditions for Setting the DTC



The ECM detects an internal failure or incomplete or incorrect programming.



Action Taken When the DTC Sets



* DTCs P0601, P0602, P0603, P0604, P0606, P062B, P062F, P0630 and P16F3 are Type A DTCs.



* DTC P2610 is a Type B DTC.

2010 Cadillac Truck SRX AWD V6-3.0L Page 87

2010 Cadillac Truck SRX AWD V6-3.0L Page 87



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 B0014 01



- Driver Seat Side Air Bag Deployment Loop Short to Battery



DTC B0014 02



- Driver Seat Side Air Bag Deployment Loop Short to Ground



DTC B0014 04



- Driver Seat Side Air Bag Deployment Loop Open



DTC B0014 0D



- Driver Seat Side Air Bag Deployment Loop High Resistance



DTC B0014 0E



- Driver Seat Side Air Bag Deployment Loop Low Resistance



DTC B0015 01



- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery



DTC B0015 02



- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Ground



DTC B0015 04



- Driver Seat Belt Retractor Pretensioner Deployment Loop Open



DTC B0015 0D



- Driver Seat Belt Retractor Pretensioner Deployment Loop High Resistance



DTC B0015 0E



- Driver Seat Belt Retractor Pretensioner Deployment Loop Low Resistance



DTC B0016 01



- Left Roof Rail Air Bag Deployment Loop Short to Battery



DTC B0016 02



- Left Roof Rail Air Bag Deployment Loop Short to Ground



DTC B0016 04



- Left Roof Rail Air Bag Deployment Loop Open



DTC B0016 0D



- Left Roof Rail Air Bag Deployment Loop High Resistance



DTC B0016 0E



- Left Roof Rail Air Bag Deployment Loop Low Resistance



DTC B0019 01



- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Battery



DTC B0019 02



- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Ground



DTC B0019 04



- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Open



DTC B0019 0D



- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 High Resistance



DTC B0019 0E



- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Low Resistance



DTC B0020 01



- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery

2010 Cadillac Truck SRX AWD V6-3.0L Page 255

2010 Cadillac Truck SRX AWD V6-3.0L Page 255



* 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 Testing



1. Ignition OFF, disconnect the X1 harness connector at the K8 Blower Motor Control Module.



2. Test for less than 5 ohm between the ground circuit X1 terminal 5 and ground.



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



3. Ignition ON, verify that a test lamp illuminates between the B+ circuit X1 terminal 6 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.



4. Connect a DMM between the control circuit X1 terminal 3 and B+.



5. Cycle the blower motor from OFF to HIGH. The voltage should increase while changing between the commanded states.



瀚慖f voltage remains greater than 11.5 V while changing between the commanded states, test the control circuit for a short to voltage. If the



circuit test normal, replace the K33 HVAC Control Module.



瀚慖f voltage remains less than 1.0 V while changing between the commanded states, test the control circuit for a short to ground or an



open/high resistance. If the circuit tests normal, replace the K33 HVAC Control Module.



瀚慖f voltage is between 1.0-11.5 V and does not increase when changing between the commanded states, replace the K33 HVAC Control



Module.



6. Ignition OFF, connect the X1 harness connector at the K8 Blower Motor Control Module and disconnect the harness connector at the M8



Blower Motor.



7. 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, replace



the K8 Blower Motor Control Module.



8. Connect a test lamp between the B+ circuit terminal 2 and the control circuit terminal 1.



9. Turn the blower motor on high speed then to low speed. The test lamp intensity should be bright when in high speed and very dim or off



when the blower is on low speed.



瀚慖f the test lamp intensity does not vary, test the control circuit for a short to voltage, short to ground, or an open/high resistance. If the



circuit tests normal, replace the K8 Blower Motor Control Module.



10. If all circuits test normal, replace the M8 Blower Motor.



Repair Instructions



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



* HVAC Component Replacement Reference (See: Heating and Air Conditioning/Service and Repair/Removal and Replacement)



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



programming



B0233



DTC B0223, B022A, B0233, B023A, B0408, B0418, B0428, or B3531



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

Friday, June 5, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1115

2010 Cadillac Truck SRX AWD V6-3.0L Page 1115



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



8. Ignition OFF, connect the red lead of the J 38522 to the signal circuit terminal A at the B75B MAF/IAT sensor harness connector. Connect



the battery voltage supply to the B+, and the black lead to ground.



9. Set the J 38522 signal switch to 5 V, the Frequency switch to 5K, and the Duty Cycle switch to Normal.



10. Ignition ON, observe the scan tool MAF Sensor parameter. The scan tool MAF Sensor parameter should be between 4,950-5,050 Hz.



瀚慖f the MAF Sensor parameter is not within the specified range, replace the K20 ECM.



11. If all other circuits test normal, test or replace the B75B MAF/IAT sensor.



Repair Instructions



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



* Engine Coolant Temperature Sensor Replacement (LF1) (See: Engine, Cooling and Exhaust/Cooling System/Engine - Coolant Temperature



Sensor/Switch/Coolant Temperature Sensor/Switch (For Computer)/Service and Repair)Engine Coolant Temperature Sensor Replacement



(LAU) (See: Engine, Cooling and Exhaust/Cooling System/Engine - Coolant Temperature Sensor/Switch/Coolant Temperature



Sensor/Switch (For Computer)/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)Mass Airflow Sensor with Intake Air Temperature Sensor



Replacement (LAU) (See: Powertrain Management/Computers and Control Systems/Air Temperature Sensor ( Ambient / Intake )/Service



and Repair)



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



P0102



DTC P0102 or P0103 (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 P0102



- Mass Air Flow (MAF) Sensor Circuit Low Frequency



DTC P0103



- Mass Air Flow (MAF) Sensor Circuit High Frequency



Diagnostic Fault Information



Typical Scan Tool Data



Circuit/System Description



The mass air flow (MAF) sensor is integrated with the intake air temperature (IAT) sensor. The MAF sensor is an air flow meter that measures the

2010 Cadillac Truck SRX AWD V6-3.0L Page 467

2010 Cadillac Truck SRX AWD V6-3.0L Page 467



4. Connect the X2 harness connector at the K8 keyless entry control module. Disconnect the X3 harness connector at the K 9 BCM.



5. Ignition OFF, test for less than 1 V between the ignition circuit terminal 5 and ground.



瀚慖f greater than the specified range, test the ignition circuit for a short to voltage. If the circuit tests normal, replace the K84 keyless entry



control module.



6. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.



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



replace the K84 keyless entry control module.



7. If all circuits test normal, replace the K9 body control module.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests)



Control Module References (See: Testing and Inspection/Programming and Relearning)



B1474



DTC B1474



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 B1474 02



- Passenger Exterior Door Handle Switch Circuit Short to Ground



Diagnostic Fault Information



Circuit/System Description



The keyless entry control module supplies a 12V signal to the passenger exterior door handle switch. When the door handle is activated, the switch



closes and the voltage signal from the keyless entry control module is pulled to ground, this input allows the keyless entry control module to detect



a door open request



Conditions for Running the DTC



Battery voltage is between 9-16 V.



Conditions for Setting the DTC



The keyless entry control module detects the right front exterior door handle switch signal circuit is shorted to ground or closed for greater than 60



s.



Action Taken When the DTC Sets



Passenger door will not open unless the passenger door is unlocked.



Conditions for Clearing the DTC



* The DTC will be current for as long as the fault is present.



* When the fault is no longer present, the DTC will be a history DTC.

2010 Cadillac Truck SRX AWD V6-3.0L Page 1184

2010 Cadillac Truck SRX AWD V6-3.0L Page 1184



Diagnostic Fault Information



Circuit/System Description



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



voltage from the fuse of each bank of coils to the ECM. The ECM uses this information to determine if the misfire is ignition coil voltage related.



Conditions for Running the DTC



* The ignition is ON.



* The ignition module supply voltage is less than 2.5 V.



* The DTCs run continuously when the above condition is met.



Conditions for Setting the DTC



The ECM detects a fault in an ignition coil control circuit for 50 out of 63 samples. Each sample runs on a 6.25 ms loop.



Action Taken When the DTC Sets



DTCs P135A and P135B are Type A DTCs.



Conditions for Clearing the DTC



DTCs P135A and P135B 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



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



Operation/Electronic Ignition System Description)



* Engine Control Module Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Engine



Control Module 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)



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



Repairs/Wiring Repairs)



DTC Type Reference



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



(DTC) Type Definitions)



Scan Tool Reference



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



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



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



Circuit/System Verification