2010 Cadillac CTS Sedan AWD V6-3.6L Page 446

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