(Table 98, contd)
Troubleshooting Test Steps
Values Results
Result: “Fuel Rail Pressure Relief Valve Test” passes
Repair: The Fuel Rail Pressure Relief Valve is operating
correctly and should not be replaced.
Result: The low-pressure fuel system is OK.
Before performing the following fuel system tests, the
engine must be run for a minimum of 30 minutes.
Proceed to Test Step 12.
Illustration 66 g03700009
Transfer Pump Inlet Regulator (TPIR) components
(1) Transfer Pump Inlet Regulator (TPIR)
(2) TPIR return port
Illustration 67 g02485896
Minimum TPIR flow rate in a 12 V system
Illustration 68 g02485897
Minimum TPIR flow rate in a 24 V system
UENR4469-36 199
Symptom Troubleshooting
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