Diagnostic Instructions
DTC Descriptors
DTC C0561 71: System Disabled Information Stored Invalid Serial Data Received
Circuit/System Description
The electronic brake control module (EBCM) receives serial data messages from the instrument panel cluster (IPC), engine control module (ECM), and the transmission control module (TCM) which are needed to perform antilock brake system (ABS), vehicle stability
enhancement system (VSES), or traction control system (TCS) functions.
Conditions for Running the DTC
Ignition voltage is greater than 9.6 volts.
Conditions for Setting the DTC
The EBCM detects an invalid serial data message from another module which causes the EBCM to disable ABS, VSES and TCS.
Action Taken When the DTC Sets
One or more of the following actions may occur:
| • | The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle. |
| • | The dynamic rear proportioning (DRP) may be disabled and the Brake Warning indicator may illuminate. |
| • | The Stability Caution indicator illuminates. |
| • | The driver information center (DIC) displays the SERVICE STABILITRAK SYSTEM message. |
| • | The DIC displays the TRACTION FAILED message. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Diagnostic Aids
This DTC indicates that there are no problems in the ABS/TCS. The ECM, TCM, IPC, and body control module (BCM) should be checked for a possible fault.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Verify that no DTCs are set in the ECM, TCM, IPC, and BCM.
