Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Cadillac Escalade EXTFACTORY OEM SERVICE PROCEDURE
Circuit/System Testing
- Ignition OFF and all vehicle systems OFF. Disconnect the harness connector at the Yaw and Lateral Accelerometer Sensor. It may take up to 2 minutes for all vehicle systems to power down.
- Test for less than 10 Ξ© between the Yaw and Lateral Accelerometer Sensor ground circuit terminal 6 and ground.
- If greater than the specified value, test the ground circuit for an open/high resistance.
- Ignition ON, verify that a test lamp illuminates between the Yaw and Lateral Accelerometer Sensor voltage (12 V reference) circuit terminal 1 and ground.
- If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
- Ignition OFF, disconnect the harness connector at the EBCM
- Ignition ON, test for less than 1 V between each Yaw and Lateral Accelerometer Sensor serial data circuit terminal listed below and ground.
- Serial data circuit terminal 2
- Serial data circuit terminal 3
- If greater than the specified value, test the appropriate serial data circuit for a short to voltage.
- Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for infinite resistance between each Yaw and Lateral Accelerometer Sensor serial data circuit terminal listed below and ground.
- Serial data circuit terminal 2
- Serial data circuit terminal 3
- If not the specified value, test the appropriate serial data circuit for a short to ground.
- Test for infinite resistance between the Yaw and Lateral Accelerometer Sensor serial data circuit terminal 2 and terminal 3.
- If not the specified value, test the serial data circuits for a short together.
- Test for less than 2 Ξ© in each serial data circuit between the Yaw and Lateral Accelerometer Sensor and the EBCM.
- Yaw and Lateral Accelerometer Sensor serial data circuit terminal 2 and EBCM serial data circuit terminal 33
- Yaw and Lateral Accelerometer Sensor serial data circuit terminal 3 and EBCM serial data circuit terminal 21
- If greater than the specified value, test the appropriate serial data circuit for an open/high resistance.
- If all circuits test normal, replace the Yaw and Lateral Accelerometer Sensor.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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