For 1990-2009 cars only
Diagnostic Instructions
| • | 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. |
DTC Descriptor
DTC C0561 71: System Disabled Information StoredDTC P0856: Traction Control Torque Request Circuit
Circuit/System Description
The electronic brake control module (EBCM) disables the traction control and sets DTC C0561 when the (ECM) engine control module set DTCs for components that effect the operation of the traction control system.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | Ignition voltage is greater than 8 volts. |
Conditions for Setting the DTC
The engine control module (ECM) detects a fault that affects the operation of the traction control and sends a message to the EBCM to disable the traction control.
Action Taken When the DTC Sets
| • | The EBCM disables the traction control system (TCS) for the duration of the ignition cycle. |
| • | The traction control off indicator illuminates. |
| • | The antilock brake system (ABS) remains functional. |
Conditions for Clearing the DTC
| • | The condition for setting 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 is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS/TCS. The ECM should be checked for a possible fault.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Antilock Brake System Connector End Views
Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Verify that no DTCs are set in the ECM.
| ⇒ | If DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle . |
