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Home >> Buick >> 1992 >> Roadmaster Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis & Testing >> Using Tech 1 >> Solenoid Valve Pressure Reduction Test
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Solenoid Valve Pressure Reduction Test

  1. Raise vehicle on frame contact hoist so wheels to be tested are off ground. Have assistant depress brake pedal. Using Tech 1, select PRESSURE REDUCE mode.
  2. Try to spin wheel being tested. Wheel should spin freely. Repeat test if necessary to verify proper operation. Perform SOLENOID VALVE PRESSURE HOLD TEST if test has not yet been performed.
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