C0241

Part 1 Of 2:

Part 2 Of 2:

CIRCUIT DESCRIPTION
Traction Control is simultaneously controlled by the 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 operation. The PCM supplies the pull up voltage.

CONDITIONS FOR SETTING THE DTC
- If a defective requested torque signal is detected by the PCM, a message is broadcasted back to the EBTCM via class 2.
- 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 DTC is stored.
- The TCS is disabled.
- The TRAC OFF indicator is turned on. The ABS remains functional.

CONDITIONS FOR CLEARING THE DTC
- Condition for 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 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.
- PCM not receiving information from the 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 PCM. This value is in percent of torque.
5. Step 5 checks for the proper requested torque value sent from the EBTCM. This value is in newton meters of torque.
7. Step 7 checks for the presence of a pull-up voltage from the PCM.