For 1990-2009 cars

### Circuit Description

Traction control is simultaneously controlled by the electronic brake and traction control module (EBTCM) and the powertrain control module (PCM)/engine control module (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

• | PCM/ECM not receiving information from EBTCM