Inclination Sensor Inoperative

Inclination Sensor Inoperative

Diagnostic Fault Information

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information





Circuit/System Description

The inclination sensor detects changes in the parked angle of the vehicle. If a change greater than 3 degrees for a 7 second period is detected, the vehicles content theft alarm is sounded. The sensor recalibrates itself each time the vehicle is parked, which allows it to account for parking on steep grades without unintentional activation.

Diagnostic Aids

The inclination sensor is a dealer installed accessory. Not all vehicles are equipped with an inclination sensor. To determine if a particular vehicle is equipped with an inclination sensor, visually inspect the installation location for the sensor based on the information contain in the installation instructions.

Reference Information
Schematic Reference

Theft Deterrent System Schematics (Theft Deterrent System Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Content Theft Deterrent (CTD) Description and Operation (Content Theft Deterrent (CTD) Description and Operation)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

Without Accessory Shock Sensor
1. Ignition OFF, disconnect the harness connector at the inclination sensor.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 1 and ground.

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

3. Test for B+ between the signal circuit terminal 3 and ground.

• If 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 BCM.

4. Ignition OFF, connect the harness connector at the inclination sensor. Disconnect the X7 harness connector at the BCM.
5. Ignition ON, test for B+ between the signal circuit terminal 15 and ground.

• If not the specified value, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the inclination sensor.

6. If all circuits test normal, test or replace the inclination sensor.

With Accessory Shock Sensor
1. Ignition OFF, disconnect the harness connector at the inclination sensor and the harness connector at the shock sensor.
2. Ignition ON, verify a test lamp illuminates between the inclination sensor B+ circuit terminal 1 and ground.

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

3. Test for B+ between the signal circuit terminal 3 and ground.

• If 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 BCM.

4. Ignition OFF, connect the harness connector at the inclination sensor. Disconnect the X7 harness connector at the BCM.
5. Ignition ON, test for B+ between the BCM signal circuit terminal 15 and ground.

• If not the specified value, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, test or replace the inclination sensor.

6. Ignition OFF, connect the harness connector at the shock sensor.
7. Ignition ON, test for B+ between the BCM signal circuit terminal 15 and ground.

• If not the specified value, test or replace the shock sensor.

8. If all circuits test normal, test or replace the inclination sensor.

Repair Instructions

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

Control Module References (Programming and Relearning) for BCM replacement, setup, and programming