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Warning Light Switch

  1. Attach a bleeder hose to bleeder screw at either rear brake. Immerse other end of hose in container with brake fluid. Turn ignition "ON". Open bleeder screw while pressure is being applied to brake pedal. Warning lamp should light. Close bleeder screw before pressure is released from pedal.
  2. Reapply pedal pressure (moderate to heavy). Light should go out. Repeat test on front brake system. System should function in same manner. Turn ignition "OFF". If lamp does not light during test on either system, but electrical system checked good, the warning light switch portion of valve is defective.
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