Monday, April 15, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 462


1. Ignition OFF, disconnect the X2, X5 harness connectors at the MSM.



2. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 2 X5 and the low reference circuit terminal 6 X2.



锟斤拷 If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat



cushion heater element/temperature sensor.



锟斤拷 If greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits



test normal, replace the seat cushion heater element/temperature sensor.



3. Connect the X2, X5 harness connectors at the MSM.



4. Disconnect the harness connector at the seat cushion heater element/temperature sensor.



5. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.



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



MSM.



锟斤拷 If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.



6. If all circuits test normal, replace the MSM.



Repair Instructions



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



* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)



()



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



HP2 or Dealer Installed W/O Memory



DTC B1925 or B2170 (HP2 or Dealer Installed w/o Memory)



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 B1925 02



- Left Seat Heater Cushion Sensor Circuit Shorted to Ground



DTC B1925 05



- Left Seat Heater Cushion Sensor Circuit Shorted to Battery or Open



DTC B2170 02



- Right Seat Heater Cushion Sensor Circuit Shorted to Ground



DTC B2170 05



- Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open



Diagnostic Fault Information

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