Circuit Description

Speed sensor used on this vehicle is a multiple pole magnetic pickup. This sensor produces an AC signal that EBCM uses frequency from to calculate wheel speed.

NOTE: Camaro and Firebird use a single rear wheel speed sensor with 3.8L engine.

DTC sets when one of the following occurs:

EBCM detects a deviation between left and right rear wheel speeds of greater than 3.75 MPH at a vehicle speed of less than 62 MPH.
EBCM detects a deviation between left and right front wheel speeds of greater than 6.25 MPH at a vehicle speed of less than 62 MPH.
EBCM detects a deviation between left and right rear wheel speeds of greater than 6 percent of vehicle speed at greater than 62 MPH.
EBCM detects a deviation between left and right front wheel speeds of greater than 2.5 MPH plus 6 percent of vehicle speed at greater than 62 MPH.

This DTC will set when EBCM cannot specifically identify which wheel speed sensor is causing malfunction. If EBCM can identify a specific wheel speed sensor causing malfunction, DTC associated with sensor (DTC C0036, DTC C0041, DTC C0046, or DTC C0051) will be set.