C0244
DTC C0244 or P1689
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0244 00
- Pulse Width Modulated (PWM) Delivered Torque
DTC P1689
- Traction Control Delivered Torque Output Circuit
Diagnostic Fault Information
Circuit Description
Traction control is simultaneously controlled by the electronic brake control module (EBCM) and the powertrain control module (PCM)/engine control module (ECM). The PCM/ECM sends DELIVERED TORQUE message via a Pulse Width Modulated (PWM) signal to the PCM/ECM confirming the delivered torque level for proper Traction Control system operation. The EBCM supplies the pull up voltage.
Conditions for Running the DTC
* The ignition is ON.
* The DTC can be set after system initialization.
Conditions for Setting the DTC
A malfunction is detected if one of the following conditions exist:
DTC C0244 can be set anytime when ignition voltage is present. A malfunction exists if the PWM signal is out of range or no signal is received for a period of 2 seconds.
Action Taken When the DTC Sets
If equipped, the following actions occur:
* The EBCM disables the TCS/VSES for the duration of the ignition cycle.
* A malfunction DTC will set.
* The Traction Control Off is turned on. The ABS remains functional.
* The Stability Off indicator is turned on.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present. The DTC is cleared with a scan tool.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
* Inspect the grounds of both the PCM/ECM and the EBCM, ensuring each ground is clean and torqued to the proper specification.
* It is important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
* If an intermittent malfunction exists refer to Checking Aftermarket Accessories (Component Tests and General Diagnostics).
* possible causes for DTC C0244 to set:
- Open in the Torque delivered Control circuit.
- Torque Delivered Control circuit shorted to ground or voltage.
- Communication frequency problem.
- Communication duty cycle problem.
- Torque Delivered Control circuit has a wiring problem, terminal corrosion, or poor connections.
- EBCM not receiving information from the PCM/ECM.
Reference Information
Schematic Reference
Antilock Brake System Schematics ([1][2]Antilock Brakes / Traction Control Systems)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
ABS Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
Engine ON, observe the scan tool delivered torque signal duty cycle from the PCM/ECM to the EBCM in the PCM or ECM scan tool data list. The displayed value should be 90 percent.
Circuit/System Testing
Ignition ON, with a DMM test for battery voltage of the delivered torque signal circuit between the EBCM and the PCM/ECM and ground.
If less than the specified range, test the delivered torque signal circuit for an open/high resistance, and short to ground. If the circuit tests normal, replace the EBCM.
If greater than the specified range, test the delivered torque signal circuit for a short to voltage. If the circuit tests normal, replace the PCM/ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Programming and Relearning) for EBCM, PCM or ECM replacement, setup, and programming