C0241

Part 1 Of 2:

Part 2 Of 2:

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

CONDITIONS FOR SETTING THE DTC
^ If a defective requested torque signal is detected by the Powertrain Control Module (PCM), a message is broadcasted back to the Electronic Brake Traction Control Module (EBTCM) via Class 2.
^ Diagnostic Trouble Code (DTC) C0241 can be set anytime when ignition voltage is present and the EBTCM detects the first Class 2 message of a defective requested torque signal from the PCM.

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 Diagnostic Trouble Code (DTC) C0241 to set:
- Open in the circuit 463.
- Circuit 463 shorted to ground or voltage.
- Communication problem.
- Circuit 463 has a wiring problem, terminal corrosion, or poor connections.
- Powertrain Control Module (PCM) not receiving information from the Electronic Brake Traction Control Module (EBTCM).

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
4. Step 4 checks for the proper requested torque value received at the Powertrain Control Module (PCM). This value is in percent of torque.
5. Step 5 checks for the proper requested torque value sent from the Electronic Brake Traction Control Module (EBTCM). This value is in newton meters of torque.
7. Step 7 checks for the presence of a pull-up voltage from the PCM.