2010 Cadillac CTS Sedan AWD V6-3.6L Page 446
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 Tilt Adjuster Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Tilt Adjuster
Actuator Replacement)
* Front Seat Adjuster Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Adjuster Actuator
Replacement)
* Driver Seat Outer Adjuster Rear Vertical Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Driver
Seat Outer Adjuster Rear Vertical Actuator Replacement)
* Front Seat Recliner Actuator Motor Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Recliner
Actuator Motor Replacement)
* Seat Lumbar Sub System Replacement (without AHS) (See: Body and Frame/Seats/Service and Repair/Seat Lumbar Sub System
Replacement (Without AHS))Seat Lumbar Sub System Replacement (with AHS) (See: Body and Frame/Seats/Service and Repair/Seat
Lumbar Sub System Replacement (With AHS))
* 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 Front Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06
- Left Front Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A
- Left Front Seat Lumbar Horizontal 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
DTC B2355 5A
- Left Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01
- Left Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06
- Left Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A
- Left Seat Rear Vertical Position Sensor Circuit Plausibility Failure
