C0244

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Part 2 Of 2:

CIRCUIT DESCRIPTION
Traction Control is simultaneously controlled by the Electronic Brake Traction Control Module (EBTCM) and the Powertrain Control Module (PCM). The PCM sends a DELIVERED TORQUE message via a Pulse Width Modulated (PWM) signal to the EBTCM confirming the delivered torque level for proper Traction Control System (TCS) operation. The EBTCM supplies the pull up voltage.

CONDITIONS FOR SETTING THE DTC
Diagnostic Trouble Code (DTC) C0244 can be set anytime when ignition voltage is present. A malfunction exists if the Pulse Width Modulated (PWM) signal is out of range or no signal is received for a period of 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction Diagnostic Trouble Code (DTC) is stored.
^ The Traction Control System (TCS) is disabled.
^ The TRAC OFF indicator is turned on. The Antilock Brake System (ABS) remains functional.

CONDITIONS FOR CLEARING THE DTC
^ Condition for Diagnostic Trouble Code (DTC) is no longer present and Scan tool clear DTC function is used.
^ 100 ignition cycles have passed with no DTC(s) detected.

DIAGNOSTIC AIDS
^ It is very 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 General Electrical Diagnosis Procedures in Diagnostic Aids.
^ Possible causes for DTC C0244 to set:
- Open in CKT 464.
- CKT 464 shorted to ground or voltage.
- Communication frequency problem.
- Communication duty cycle problem.
- CKT 464 has a wiring problem, terminal corrosion, or poor connections.
- Electronic Brake Traction Control Module (EBTCM) not receiving information from the Powertrain Control Module (PCM).

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
4. Checks for proper torque value in Nm.
6. Checks for the presence of a pull-up voltage from the Electronic Brake Traction Control Module (EBTCM).