2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 512
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal A. Verify the
appropriate scan tool lumbar sensor parameter is greater than 4.75 volts.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the lumbar position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Seat Adjuster Replacement (with HP2) ()Front Seat Adjuster Replacement (without HP2) ()
* Seat Lumbar Sub System Replacement ()
* Front Seat Recliner Actuator Motor Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
B1850
DTC B1825, B1850, B1860, B2355, B2365, or B2375
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 B1825 01
- Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06
- Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A
- Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06
- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A
- Left Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06
- Left Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A
- Left Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01
- Left Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06
- Left Seat Front Vertical Position Sensor Circuit Short to Ground or Open
