| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. | 
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. | 
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. | 
The electronic brake control module (EBCM) monitors the deceleration of the vehicle for Antilock Brake System (ABS) operation.
Ignition is in the ON position
| • | The yaw rate sensor calibration is deleted and the vehicle is driven. | 
| • | The yaw rate sensor calibration obtained, sensor voltage is not between 2.38V and 2.62V. | 
| • | The ABS is disabled. | 
| • | The ABS warning indicator turns ON. | 
| • | The traction control and vehicle stability control (VSC) is disabled. | 
| • | The VSC warning indicator turns ON. | 
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Antilock Brake System Schematics
Control Module References for scan tool information
| ⇒ | If DTC U0123, U0124, or U0126 is set, refer to appropriate DTC. | 
| ⇒ | If yaw rate sensor is not correctly installed, correct installation of yaw rate sensor and using a scan tool perform yaw rate sensor calibration. | 
| ⇒ | If yaw rate sensor is correctly installed, replace EBCM. | 
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for EBCM replacement, setup, and programming |