Troubleshooting

(Table 57, contd)
Troubleshooting Test Steps
Values Results
4. Fuel Injector Seals
A. Check for signs of damage to the seals for the fuel
injectors.
Fuel injector
seals
Result: Injector seals are damaged.
Replace any damaged injector seals.
Change the engine oil and perform the “Engine Oil Life Reset”
. Refer to Operation and Maintenance Manual, “Engine Oil
and Filter - Change”.
Result: All injector seals are OK.
Proceed to Test Step 5.
5. Fuel Injector Tip
A. Check for signs of damage to the fuel injectors. Check the
fuel injector tip for cracks or breakage.
Fuel injector tip Result: A fuel injector is damaged.
Replace the fuel injector. Refer to Disassembly and Assembly,
“Electronic Unit Injector - Remove” and Disassembly and As-
sembly, “Electronic Unit Injector - Install”.
Change the engine oil and perform the “Engine Oil Life Reset”
. Refer to Operation and Maintenance Manual, “Engine Oil
and Filter - Change”.
Result: All fuel injectors are OK.
Contact the Dealer Solution Network (DSN).
i06226085
Oil Pressure Is Low
This procedure covers the following diagnostic code:
Table 58
Diagnostic Trouble Codes for Low Engine Oil Pressure
J1939
Code
Description
Notes
100-17 Engine Oil Pressure :
Low - least severe (1)
The Electronic Control Module (ECM) detects that the engine oil pressure is low.
The engine speed is greater than 500 RPM.
If equipped, the warning lamp will come on and the oil pressure lamp will come on.
NOTICE
Do not operate the engine with low oil pressure. En-
gine damage will result. If measured oil pressure is
low, discontinue engine operation until the fault is
corrected.
The Electronic Control Module (ECM) monitors the
engine oil pressure.
Probable Causes
• Visible Leaks
• Engine oil level
• Oil specification
• Engine oil filter
• Engine oil pressure switch
• Engine oil relief valve
• Engine oil cooler
• Fuel in the engine oil
• Piston cooling jets
UENR0612-07 117
Symptom Troubleshooting
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