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DTC C0055Diagnostic Instructions
DTC DescriptorDTC C0055 00: Invalid Data Received From Electronic Brake Control ModuleCircuit/System DescriptionThe wheel speeds are detected by active wheel speed sensors. Each wheel speed sensor receives a 12 V reference voltage from the electronic brake control module (EBCM) and provides an alternating current square wave signal to the EBCM. As the wheel spins, the EBCM uses the frequency of the square wave signal to calculate the wheel speed. The EBCM sends the wheel speed information as a high speed controller area network (CAN) serial data message. Conditions for Running the DTCIgnition ON Conditions for Setting the DTCA supervised periodic message that includes the wheel speed serial data has not been received. Action Taken When the DTC SetsSpecific subsystems will not function or operate in degraded mode. Conditions for Clearing the DTCA current DTC clears when the diagnostic runs and passes. Reference InformationSchematic ReferenceAntilock Brake System Schematics Connector End View ReferenceDescription and OperationElectrical Information ReferenceScan Tool ReferenceControl Module References for scan tool information Circuit/System VerificationIgnition ON, observe the scan tool EBCM Wheel Speed Sensor parameters. The reading should be the same speed on all sensors when driving in a straight line at a speed greater than 20 km/h (13 MPH). Circuit/System Testing
If any listed DTC is present, refer to DTC C0035, C0040, C0045, or C0050 to diagnose that DTC prior to this diagnostic. If the DTC resets, replace the module that set the DTC. Repair InstructionsPerform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for module replacement, setup and programming |
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