(Table 42, contd)
Troubleshooting Test Steps Values Results
4. Fuel Rail Pressure Sensor
A. Make sure that the engine has been shut down for at least 10
minutes. Use the electronic service tool to check the status of the
“Fuel Rail Pressure”
Pressure sensor Result: The “Fuel Rail Pressure (absolute)” is more
than 5,000 kPa (725 psi).
Replace the fuel rail pressure sensor. Refer to Disas-
sembly and Assembly, “Fuel Manifold (Rail) - Remove
and Install”.
Confirm that the fault has been eliminated.
Result: The “Fuel Rail Pressure (absolute)” is less than
5,000 kPa (725 psi).
Proceed to Test Step 5.
5. Fuel System Inspection
A. Check that the fuel shut-off valve is in the OPEN position.
B. If the temperature is below 0 °C (32 °F), check for solidified fuel
(wax).
C. Check for fuel supply lines that are restricted.
D. Check that the low-pressure fuel lines are correctly installed.
E. Check the pressures in the fuel system. Refer to Systems Oper-
ation, Testing, and Adjusting, “Fuel System Pressure - Test”
F. Check the diesel fuel for contamination. Refer to Systems Oper-
ation, Testing, and Adjusting, “Fuel Quality - Test”.
G. Check for air in the fuel system. Refer to Systems Operation,
Testing, and Adjusting, “Air in Fuel - Test”.
H. Ensure that the fuel system has been primed. Refer to Systems
Operation, Testing, and Adjusting, “Fuel System - Prime”.
Fuel System Result: A defect was found in the fuel system.
Make any necessary repairs.
Result: No defects found.
Proceed to Test Step 6.
Contact with high pressure fuel may cause fluid
penetration and burn hazards. High pressure fuel
spray may cause a fire hazard. Failure to follow
these inspection, maintenance and service in-
structions may cause personal injury or death.
96 UENR0612
Symptom Troubleshooting
This document has been printed from SPI2. NOT FOR RESALE
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