C0241

C0241 - PWM DELIVERED TORQUE REDUCTION MALFUNCTION





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

DTC PARAMETERS
DTC C0241 will set if the following conditions exist:
^ There is an interruption in the requested torque circuit between the EBTCM and PCM/ECM.
^ A defective requested torque signal is detected by the PCM/ECM, PWM signal outside the normal range (95% - 97%) is sent back to the EBTCM via the delivered torque circuit.
^ The EBTCM receives an out of range signal for 30 milliseconds continuously.
^ Ignition voltage is present and the EBTCM detects engine rpm greater than 480.
^ When this DTC sets, the EBTCM will disable traction control.

DIAGNOSTIC AIDS
Possible causes for DTC C0241 to set:
^ Open in the requested torque circuit
^ Requested torque circuit shorted to ground or voltage
^ Requested torque circuit has a wiring problem, terminal corrosion, or poor connections
^ Powertrain Control Module/Engine Control Module (PCM/ECM) not receiving information from Electronic Brake Traction Control Module (EBTCM).