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Home >> Chevrolet >> 2020 >> Trax LS, FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Diagnostic Information and Procedures >> DTC C027B >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Deplete the vacuum in the brake booster and verify the M9 Brake Booster Pump Motor turns ON
    • If the M9 Brake Booster Pump Motor does not turn ON 

      Refer to Circuit/System Testing.

    • Go to next step: If the M9 Brake Booster Pump Motor turns ON 
  3. Verify that the brake booster vacuum system has no damage, leakage or incorrect installation.
    • Go to next step: If the inspection is OK 
  4. All OK.
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