FUEL PUMP (for High Pressure) ON-VEHICLE INSPECTION

CHECK FUEL PUMP OPERATION

1. Check the fuel pressure.

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Start the engine.

   3. Turn the tester on.

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

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

      Tech Tips

      The Control the Target Fuel Pressure operation lowers the target fuel pressure by 12.5% or increases the target fuel pressure by 25%.

      Standard
      Fuel pressure fluctuates in accordance with tester operation.

      If the result is not as specified, replace the fuel pump or fuel pressure sensor.

INSPECT FUEL PUMP ASSEMBLY

1. Measure the resistance according to the value(s) in the table below.

   Standard resistance
   Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 1.19 to 1.39 Ω

   If the result is not as specified, replace the fuel pump assembly.