2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 657

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 657

5. Install a 3A fused jumper wire between the signal circuit terminal C and the 5-volt reference circuit terminal D. Verify the scan tool Tilt

Sensor parameter is greater than 4.8 volts.

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.

6. Install a test lamp between the control circuit terminal A and the control circuit terminal B.

7. Command the column to tilt up and down using the tilt switch. The test lamp should illuminate with each command.

瀚慖f the test lamp does not illuminate, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal,

replace the MSM.

8. If all circuits test normal, test or replace the tilt actuator.

Component Testing

Tilt Actuator

1. Ignition OFF, disconnect the harness connector at the tilt actuator.

2. Test for less than 2.0 ohms between the control terminal A and the control terminal B.

瀚慖f greater than the specified range, replace the tilt actuator.

Repair Instructions

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

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

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

B2870

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 B2870 01

- Tilt Up Switch Circuit Short to Battery

DTC B2875 01

- Tilt Down Switch Circuit Short to Battery

Diagnostic Fault Information

Circuit Description

The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery

voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.

Conditions for Running the DTC