64 KENR6933
Troubleshooting Section
3. If a fault is suspected with the ECM power and
ground connect
ions refer to Troubleshooting,
“Electrical Power Supply Circuit - Test”.
4. Verify that th
e ECM connections for the power and
ground connections at the fuel pump are correctly
connected.
5. Repair any faults and ensure that the faults have
been eliminated.
6. If the repairs do not eliminate the faults, proceed
to “Fuel Supply”.
Fuel Supply
1. Visually che
ck the fuel tank for fuel. The fuel
gauge may be faulty.
2. Ensure that t
he fuel supply valve (if equipped) is
in the full OPEN position.
3. If the temper
ature is below 0 °C (32 °F), check
for solidified fuel (wax).
4. Check the pr
imary filter/water separator for water
in the fuel.
5. Check for fu
el supply lines that are restricted.
6. Check that the low pressure fuel lines are tight
and secured
properly.
7. Check the fuel filters.
8. Check the diesel fuel for contamination. Refer to
Testing and Adjusting, “Fuel Quality - Test”.
9. Check for air in the fuel system. Refer to Testing
and Adjusting, “Air in Fuel - Test”.
10. Ensure that the fuel system has been primed.
Refer to Testing and Adjusting, “Fuel System -
Prime”.
11. Check the fuel pressure. Start the engine and
then use th
e electronic service tool to check
that the pressure in the fuel rail is more than
18000 kPa (2610 psi).
12. If the repair does not eliminate the fault refer to
“Intake Manifold Pressure”.
Intake Manifold Pressure
1. Use the el
ectronic service tool to verify the intake
manifold pressure.
2. Turn the s
tart switch to the ON position.
3. The intake manifold pressure should read
0±0.5kPa(0±0.
07 psi). If the intake manifold
pressure is not within the limits, perform the
following steps.
4. Check the air filter restriction indicator, if equipped.
5. Ensure that th
eairfilter is clean and serviceable.
6. Check the air intake and the exhaust system for
the following
defects:
•
Blockages
•
Restrictions
•
Damage to the a
ir intake and exhaust lines and
hoses
i02528979
Low E n gin e Oil Pressu re
NOTICE
Do not operate the engine with low oil pressure.
Engine damage will result. If measured oil pressure is
low, discont
inue engine operation until the problem is
corrected.
Probable Cau
ses
•
Engine oil level
•
Oil specification
•
Engine oil pr
essure gauge
•
Engine oil filter
•
Engine oil cooler
•
Piston cooli
ng jets
•
Engine oil suction tube
•
Engine oil pump
•
Bearing cle
arance
Recommende
dActions
Engine Oil Level
1. Inspect the engine oil level. If necessary, add oil.
2. If the fault
is still apparent, refer to “Oil
Specification”.