Tuesday, July 23, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 213


B320A 39



If the DTC is current, the appropriate window motor must be replaced before the DTC can be cleared.



B320A 42



The affected power window motor must be programmed before the DTC can be cleared.



B320A 4B



The affected power window motor must be calibrated before the DTC can be cleared.



Reference Information



Schematic Reference



Moveable Window Schematics (See: Windows and Glass/Windows/Diagrams/Electrical Diagrams)



Connector End View Reference



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



Description and Operation



Power Windows Description and Operation (See: Windows and Glass/Windows/Description and Operation/Power Windows 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 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



B320A 39



Ignition ON, command the appropriate power window DOWN and UP with a scan tool. The power window should go DOWN and UP as



commanded.



If the DTC is current and the power window is inoperative, replace the power window motor.



If the DTC is history and the power window performs the UP and DOWN functions, clear the DTC.



B320A 42



Ignition ON, reprogram the appropriate power window and operate the power window within the conditions for running the DTC, verify the DTC



does not reset.



If the DTC resets, replace the power window motor.



B320A 4B



Command the front window motor fully DOWN by pressing and holding the front window switch for 5 seconds, then command the front window



motor fully UP by lifting and holding the front window switch for 5 seconds.



If the DTC resets, replace the power window motor.



Repair Instructions



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



Front Side Door Window Regulator Motor Replacement (See: Windows and Glass/Windows/Service and Repair/Front Side Door Window



Regulator Motor Replacement)

Monday, July 22, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 518


The module detects that the set point temperature has not been reached within 8.5 minutes.



B2425 0B, B2425 0E, B2430 0B, or B2430 0E



By measuring output current, the module calculates that the heating element resistance is below the minimum resistance.



B2425 0C, B2425 0D, B2430 0C, or B2430 0D



By measuring output current, the module calculates that the heating element resistance is above the maximum resistance.



B2425 1F or B2430 1F



The temperature sensor voltage is erratic or changes suddenly.



Action Taken When the DTC Sets



The heated seat cushion function for the affected seat will be disabled.



Conditions for Clearing the DTC



* The current DTC clears when the malfunction is no longer present, and the power mode changes to OFF then back to ACC or RUN.



* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.



Reference Information



Schematic Reference



Heated/Cooled Seat Schematics ()



Connector End View Reference



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



Description and Operation



Heated Seats Description and Operation (KA1) ()Heated Seats Description and Operation (KA6) ()



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



Verify the type of vehicle and the heated seat system for which the DTC set.



If the DTC set in a vehicle equipped with memory, refer to Circuit/System Testing below.



If the DTC set in a hybrid vehicle without memory, refer to DTC B2425 or B2430 (HP2 w/o memory).



If the DTC set in a non-hybrid vehicle without memory, refer to DTC B2425 or B2430 (Dealer installed).



If the DTC set in the rear heated seat module, refer to DTC B2425 or B2430 (Rear seat).



Circuit/System Testing



B2425 0A, B2425 0B, B2425 0C, B2425 0D, B2425 0E, B2425 04, or B2425 1F



1. Ignition OFF, disconnect the X3 harness connector at the MSM.



2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.



锟斤拷 If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.



3. Ignition OFF, connect the X3 harness connector at the MSM and disconnect the X1 harness connector at the MSM.



Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat



unoccupied, then with the seat occupied.

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 369


Circuit/System Description



The memory seat module (MSM) monitors the current supplied to the seat adjuster motors. The MSM can detect both absolute and differential



current levels from the motors. Absolute current is the maximum allowable current the module will supply to the motors. A differential current



mismatch occurs when the current supplied to the seat, lumbar and adjustable pedal motors do not match the current returning from the motors.



Conditions for Running the DTC



The MSM establishes that it is not closing to a shorted motor control circuit before the motors are active.



Conditions for Setting the DTC



B1335 00



Current out of the module does not match the current returning to the module within 5 amps.



B1335 0B



The absolute current or an over-current has exceeded the maximum value allowed.



B1335 42



This DTC will set if the module calibration is not programmed.



B1335 4B



This DTC will set if the module calibration is out of range.



Action Taken When the DTC Sets



The adjustable pedal motor and all driver seat adjuster motors are disabled.



Conditions for Clearing the DTC

Sunday, July 21, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 691


B3823 00



The BCM detects a fault in the right rear window down circuit.



Action Taken When the DTC Sets



The left or right rear power window will be inoperative from the driver master control.



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.



Reference Information



Schematic Reference



Moveable Window Schematics (See: Windows and Glass/Windows/Diagrams/Electrical Diagrams)



Connector End View Reference



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



Description and Operation



Power Windows Description and Operation (See: Windows and Glass/Windows/Description and Operation/Power Windows 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 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, command the appropriate rear door window UP and DOWN by using the window switch on the driver master control. The rear door



window should perform UP and DOWN function.



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the appropriate rear window switch.



2. Ignition ON, test for greater than 9 volts between the signal circuit terminal A and ground while commanding the rear window UP by using the



window switch on the driver master control.



锟斤拷 If less than the specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the



BCM.



3. Test for greater than 9 volts between the signal circuit terminal C and ground while commanding the rear window DOWN by using the



window switch on the driver master control.



锟斤拷 If less than the specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the



BCM.



4. If all circuits test normal, replace the rear window switch.



Repair Instructions



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



* Rear Side Door Window Switch Replacement (See: Windows and Glass/Windows/Service and Repair/Rear Side Door Window Switch



Replacement)



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

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 303


HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Manual)



Connector End View Reference



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



Description and Operation



* Air Temperature Description and Operation (See: Heating and Air Conditioning/Description and Operation/HVAC - Manual/Air



Temperature Description and Operation)Air Temperature Description and Operation



* Air Delivery Description and Operation (See: Heating and Air Conditioning/Description and Operation/HVAC - Manual/Air Delivery



Description and Operation)Air Delivery 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 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. Ignition ON, disconnect the harness connector at the auxiliary HVAC control module, test for 4.8-5.2 volts between the 5-volt reference



circuit terminal 3 and ground.



锟斤拷 If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,



replace the HVAC Control Module.



锟斤拷 If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the HVAC



Control Module.



2. Reprogram the HVAC control module that set DTC B1023. The module should successfully reprogram.



锟斤拷 If the module will not reprogram, replace the HVAC control module that set the DTC.



3. With a scan tool, clear the DTC.



4. Ignition OFF.



5. Wait 60 seconds, then recheck for DTCs. DTC B1023 should not set.



锟斤拷 If DTC B1023 sets, replace the module.



Repair Instructions



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



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



replacement, setup, and programming



B1024



DTC B1024



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.

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 290


DTC B1000 12



- Electronic Control Unit (ECU) Performance Below Minimum Threshold



DTC B1000 31



- Electronic Control Unit (ECU) General Checksum Problem



DTC B1000 32



- Electronic Control Unit (ECU) General Memory Failure



DTC B1000 33



- Electronic Control Unit (ECU) Performance Special Memory Failure



DTC B1000 34



- Electronic Control Unit (ECU) Performance RAM Integrity



DTC B1000 35



- Electronic Control Unit (ECU) Performance ROM Integrity



DTC B1000 36



- Electronic Control Unit (ECU) Performance EEPROM Integrity



DTC B1000 37



- Electronic Control Unit (ECU) Performance Watchdog / Safety Failure



DTC B1000 38



- Electronic Control Unit (ECU) Performance Supervision Software Failure



DTC B1000 39



- Electronic Control Unit (ECU) Performance Internal Electronic Failure



DTC B1000 43



- Electronic Control Unit (ECU) Performance EEPROM Error



DTC B1000 46



- Side Object Detection Performance - Invalid Configuration



DTC B1000 56



- Electronic Control Unit (ECU) Performance Allowable Number of Transitions / Events Exceeded



DTC B1000 57



- Electronic Control Unit (ECU) Performance



DTC B1000 73



- Electronic Control Unit (ECU) Performance Parity Error



DTC B1000 0F



- Electronic Control Unit (ECU) Performance Erratic



DTC B1000 2B



- Electronic Control Unit (ECU) Performance Missing Reference



DTC B1000 2C



- Electronic Control Unit Performance Reserved



DTC B1000 3B



- Electronic Control Unit (ECU) Performance Internal Self Test Failed



DTC B1000 3C



- Electronic Control Unit (ECU) Performance Internal Communications Failure



DTC B1000 4A



- Side Object Detection Performance - PROM Checksum Error



DTC B1000 F0



- Side Object Detection RF Transmit Chain Failed



DTC B1000 F1



- Side Object Detection RF Receive Chain Failed

Saturday, July 20, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 431


* Front vertical upward switch terminal A



* 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 seat adjuster switch.



Component Testing



1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.



2. Test for infinite resistance between each seat direction signal terminal listed below and the B+ terminal E with the switch in the open position.



* Front vertical upward switch terminal A



* 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



锟斤拷 If not the specified value, replace the seat adjuster switch.



3. Test for less than 1 ohm between each seat direction signal terminal listed below and the B+ terminal E with the switch in the closed position.



* Front vertical upward switch terminal A



* 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



锟斤拷 If greater than the specified range, replace the adjuster switch switch.



Repair Instructions



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



* Power Seat Switch Replacement (with HP2) ()Power Seat Switch Replacement (without HP2) ()



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



B1750



DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820



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 B1735 01



- Seat Front Up Switch Circuit Short to Battery



DTC B1740 01



- Seat Front Down Switch Circuit Short to Battery