Specifications

TEST ACTION APPLICABILITY
8 Refer to the appropriate Service Information and refer to Diagnosis and Testing Fuel
Delivery System table.
NOTE: The following is a list of problems that can cause fuel pressure to
deviate from specification: restricted fuel filter or fuel lines, failed fuel
pressure solenoid, failed fuel lift pump, failed fuel sending unit, contami-
nated fuel, faulty injector.
Were there any problems with the Fuel Delivery System?
All
Yes → Repair as necessary in accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No → Go To 9
9 Refer to each of the following symptoms in the Driveability category.
CHECKING THE FUEL PRESSURE SOLENOID CIRCUITS
CHECKING THE FUEL QUANTITY SOLENOID CIRCUITS
CHECKING THE FUEL PRESSURE SENSOR CIRCUITS
Were any problems found?
All
Yes → Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No → Go To 10
10 NOTE: An injector that sticks open can cause this DTC. A sticking injector
will cause the engine to misfire and emit excessive black smoke from the
exhaust system.
Refer to the Service Information and perform the Fuel Injector Leak Quantity Test.
Were any problems found?
All
Yes → Using the Service Information, remove and inspect the Fuel
Injectors for signs of damage or debris that may cause the injector
to stick. Sticking injectors may cause the combustion chamber to
become black and oil soaked. Replace Injector(s) as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No → Go To 11
11 With the DRBIIIt, select System Test, Smooth Eng Run Check, then Correction
Quantity Check.
Perform this test at Idle, 2000 rpm and 3000 rpm.
NOTE: Readings per cylinder should be below ± 0.00450 mm
3
/stroke for each
cylinder at each engine speed.
Did any of the cylinders exceed ± 0.00450 mm
3
/stroke during this test?
All
Yes → Replace Fuel Injector of the cylinder(s) that had readings above ±
0.00450 mm
3
/stroke.
Perform ROAD TEST VERIFICATION - VER-2.
No → Go To 12
12 With the DRBIIIt, select System Test, Smooth Eng Run Check, then Cylinder Speed
Check.
NOTE: Readings for all cylinders should be close to each other. Look for one
or two cylinders to differ high or low from the other cylinders.
Did any of the cylinders differ significantly from the majority of the other cylinders?
All
Yes → Replace Fuel Injector of the cylinder(s) that had readings signif-
icantly above or below the other fuel injectors.
Perform ROAD TEST VERIFICATION - VER-2.
No → Go To 13
121
DRIVEABILITY - DIESEL
P2015-FUEL RAIL PRESSURE MALFUNCTION MAXIMUM FUEL FLOW
EXCEEDED —
Continued