VACUUM WARNING SWITCH ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR

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2. INSPECT BRAKE BOOSTER ASSEMBLY

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3. INSPECT VACUUM WARNING SWITCH ASSEMBLY

   
   

   1. Start the engine and stop it after 1 or 2 minutes.

   2. Disconnect the connector from the vacuum warning switch assembly.

   3. Measure the resistance of the vacuum warning switch assembly.

      Standard resistance
      10 kΩ or higher

   4. With the engine stopped, depress the brake pedal several times to release vacuum from the brake booster assembly, and measure the resistance of the vacuum warning switch assembly.

      Standard resistance
      Below 1 Ω

   5. Connect the connector to the vacuum warning switch assembly.