2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 517
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.
瀚慖f 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.
瀚慖f 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.
瀚慖f 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.
瀚慖f 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
