FUEL PUMP(for High Pressure) ON-VEHICLE INSPECTION

PROCEDURE

1. CHECK FUEL PUMP WITH SEAL SUB-ASSEMBLY OPERATION

   
   

   1. Check fuel pressure.

      
      

      1. Connect the GTS to the DLC3.

      2. Put the engine in inspection mode (maintenance mode).

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      3. Start the engine.

      4. Turn the GTS on.

      5. Enter the following menus: Powertrain / Engine / Active Test / Control the Target Fuel Pressure / Fuel Press.

         
         Powertrain > Engine > Active Test

         Active Test Display
         Control the Target Fuel Pressure

         Data List Display
         Fuel Press

      6. Check that the fuel pressure fluctuates when the target fuel pressure changes.

         Tech Tips

         The target fuel pressure operation decreases the target fuel pressure by 12.5% or increases the target fuel pressure by 24.8%.

         If the result is not as specified, replace the fuel pump with seal sub-assembly or fuel pressure sensor.

   2. Check operating sound.

      
      

      1. Remove the No. 1 engine cover sub-assembly.

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      2. Put the engine in inspection mode (maintenance mode).

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      3. Start the engine.

      4. Using a sound scope, check the operating sound of the pump.

         If no sound can be heard, check the fuel pump with seal sub-assembly, wire harness and ECM.

      5. Stop the engine.

      6. Reinstall the No. 1 engine cover sub-assembly.

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