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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1778 (Rear Wheel Steering System) >> Diagnostic Information and Procedures >> DTC C0253: EBCM Control Valve Circuit >> Circuit Description

Circuit Description

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The steering position sensor provides 3 digital signal inputs and 1 analog signal inputs to the rear wheel steering control module. The 3 digital signals are:

The analog signal is the steering wheel position signal. This is a class 2 signal from the TBC.

The rear wheel position sensor provides 2 discreet analog signal inputs to the rear wheel steering control module. These inputs are:

The rear wheel steering control module compares the differences between the steering wheel position sensor and the rear wheel position sensor. If the difference exceeds the internal values in the rear wheel steering control module than C0253 will set.