2010 Cadillac CTS Sedan AWD V6-3.6L Page 526

2010 Cadillac CTS Sedan AWD V6-3.6L Page 526

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.

2. Ignition ON, verify a test lamp illuminates between terminal 4 and ground.

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

3. Verify with the scan tool that the appropriate switch parameter is Inactive.

瀚慖f not the specified value, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.

4. Install a 3A fused jumper wire between the appropriate circuit terminal 1, 2, 3, or 5 and terminal 4. Verify with the scan tool that the

appropriate switch parameter is Active.

瀚慖f not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the

MSM.

5. If all circuit test normal, test or replace the tilt/telescope switch.

Component Testing

Tilt/Telescope Switch

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.

2. Test for infinite resistance between terminals 1, 2, 3, and 5 with the switch in the neutral position:

瀚慖f less than the specified range, replace the tilt/telescope switch.

3. Test for less than 1 ohm between terminal 4 and terminals 1, 2, 3, and 5 with the switch in each appropriate position.

瀚慖f greater than the specified value, replace the tilt/telescope switch.

Repair Instructions

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

* Steering Column Replacement (See: Steering and Suspension/Steering/Steering Column/Service and Repair/Steering Column Replacement)

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

B2855

DTC B2850, B2855, B2870, or B2875

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 Descriptor

DTC B2850 01

- Telescope Forward Switch Circuit Short to Battery

DTC B2855 01

- Telescope Rearward Switch Circuit Short to Battery

DTC B2870 01

- Tilt Up Switch Circuit Short to Battery

DTC B2875 01

- Tilt Down Switch Circuit Short to Battery

Diagnostic Fault Information