C0287

Circuit Description
The EBCM sends 12 VDC to the Powertrain Control Module (PCM). The PCM toggles this voltage to ground in order to create the delivered torque signal at the EBCM. A signal with a Hz frequency of 128 ± 5% and a duty cycle of 25%-95% is a valid delivered torque signal. The percentage of duty cycle is proportionate to the percentage of delivered torque.

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
The delivered torque signal is detected as being invalid for 300 milliseconds.

Action Taken When the DTC Sets
^ The TRACTION OFF indicator is commanded on.
^ The Traction Control is disabled for the remainder of the ignition cycle.

Conditions for Clearing the DTC
^ The condition(s) responsible for setting the DTC are no longer present.
^ A scan tool is used in order to clear the DTC.

Diagnostic Aids
Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to Testing for Intermittent and Poor Connections, Connector Repairs and Wiring Repairs under Diagrams, Diagnostic Aids.

Test Description
3. This step tests for voltage from the EBCM on the delivered torque signal circuit.