Circuit Description
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Brake and Traction Control Module (EBTCM) supplies 12 volts on the delivered torque circuit to the PCM. PCM toggles this 12 volt signal to ground in order to produce a duty cycle signal. The signal is proportional to the amount of engine output torque reduction. In order to reduce engine output torque, PCM reduces the amount of spark advance and in some cases the PCM disables a number of fuel injectors. This diagnostic will test for a delivered torque signal failure. DTC will set when PCM does not receive the delivered torque signal for 3 seconds.