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Home >> Mazda >> 2017 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Before Service Precaution >> Fuel Line Safety Procedure
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Fuel Line Safety Procedure

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the fuel-filler cap to release the pressure inside the fuel tank.
  3. Remove the fuel pump relay.
    Fig 1: Relay And Fuse Block Component (Fuel Pump Relay)
    G11436319Courtesy of MAZDA MOTORS CORP.
  4. Disconnect the high pressure fuel pump connector. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION .)
  5. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  6. Start the engine.
  7. After engine stall, crank the engine 2 to 3 times repeatedly and verify that the engine idling condition is not maintained. (to relieve pressure in fuel pipe)
  8. Switch the ignition to off.
  9. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  10. Install the fuel pump relay.
  11. Connect the high pressure fuel pump connector. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION .)
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