FUEL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE

  1. CHECK FUEL PRESSURE

    1. Read Data List

      Note:

      In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

      Tip:

      Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

      1. Warm up the engine.

      2. Turn the ignition switch off.

      3. Connect the GTS to the DLC3.

      4. Turn the ignition switch to ON.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Engine and ECT / Data List.

        Powertrain > Engine and ECT > Data List

        Tester Display

        Target Common Rail Pressure

        Common Rail Pressure

      7. Read the Data List.

        Tester Display

        Measurement Item/Range

        Normal Condition

        Target Common Rail Pressure

        Target common rail pressure/

        Min.: 0 kPa, Max.: 655350 kPa

        25000 to 185000 kPa: Engine running

        Common Rail Pressure

        Common rail pressure/

        Min.: 0 kPa, Max.: 655350 kPa

        • Idling: 25000 to 35000 kPa

        • 4000 rpm: 80000 to 120000 kPa

        Common Rail Pressure = Target Common Rail Pressure +/-10000 kPa at stable condition

  2. INSPECT FOR FUEL LEAK

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Test the Fuel Leak

    5. Perform the Active Test.

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Test the Fuel Leak

      Pressurizes common rail internal fuel pressure, and checks for fuel leaks

      Stop/Start

      Perform inspection of the high pressure fuel system.

      Test is possible when the following conditions are met:

      • Ignition switch ON

      • Engine running

      • Shift lever in neutral