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Home >> Chevrolet >> 2000 >> Corvette 2D Convertible, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System With Traction Control System >> Diagnosis & Testing >> Scan Tool Special Functions >> Solenoid Valve - Pressure Release Test

Solenoid Valve - Pressure Release Test

  1. This test indicates whether specific valves in the BPMV allow hydraulic wheel circuit pressure to be returned to master cylinder circuit, reducing wheel circuit pressure.
  2. This test activates selected hydraulic wheel circuit valves, placing valves in pressure reduce position, allowing wheel caliper pressure to be returned to master cylinder.
  3. This action is taken because EBTCM has determined that wheel is moving too slowly, allowing it to rotate at an appropriate speed. In this test, scan tool commands the valve to close, allowing wheel to spin even though brake pedal pressure is applied. To perform test, go to next step.
  4. Turn ignition off. Install scan tool. Turn ignition to RUN position. Raise and support vehicle until wheels are about 6 inches from floor. Using scan tool's Special Functions, select VALVE SOLENOID TEST and command RELEASE PRESSURE. With assistant holding brake pedal down, attempt to turn wheel being tested by hand.
  5. The wheel should turn even with pressure on brake pedal, it may be difficult to turn it by hand, but still can be turned if system is working properly.
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