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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 942 (Anti-Lock Brake System) >> Diagnostic Information and Procedures >> DTC C0241: EBCM Control Valve Circuit; C0245: Wheel Speed Sensor Frequency Error; C0254: EBCM Control Valve Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The system relays are energized when the ignition is ON and the vehicle speed is greater than 6 km/h (4 mph). The system relay supplies voltage to the solenoid valves and to the pump motor. This voltage is referred to as the system voltage. The EBCM controls the solenoid valves by grounding the control circuit.

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