Circuit/System Testing

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, verify that DTC U2142, C0186, C0196 or C0292 is not set.
- If DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Inspect the yaw/lateral accelerometer sensor for correct installation.
- If loose or incorrect installation is diagnosed, correct the installation of the component refer to Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement .
Ignition OFF, disconnect the harness connector at the yaw/lateral accelerometer sensor.
Test for less than 5 Ω between the ground circuit terminal 6 and ground.
- If greater than the specified value, test the ground circuit for an open/high resistance.
Ignition ON, test for greater than 10 V between the ignition voltage circuit terminal 1 and ground.
- If less than the specified value, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
If all circuits test normal, replace the yaw/lateral accelerometer sensor and verify the DTC does not reset.
- If the DTC resets, replace the EBCM.