Troubleshooting

(Table 28, contd)
Troubleshooting Test Steps
Values Results
7. Electronic Unit Injectors
A. Use the electronic service tool to check for active diagnostic co-
des that relate to the electronic unit injectors.
Diagnostic
codes
Result: There are active diagnostic codes relating to the
fuel injectors.
Repair: Troubleshoot any active diagnostic codes associ-
ated with the fuel injectors. Refer to Troubleshooting, “Di-
agnostic Trouble Codes”
Result: All injectors are OK.
Proceed to Test Step 8.
8. Individual Malfunctioning Cylinders
A. With the engine speed at a fast idle, use the electronic service
tool to perform the manual “Cylinder Cut Out Test” . As each cylin-
der is cut out, listen for a change in the sound from the engine.
When a cylinder is cut out, there should be a noticeable change in
the sound of the engine.
Cylinders Result: There is not a noticeable change in the sound of
the engine for at least one cylinder.
Repair: Investigate the cause of the fault on any cylinder
that is not operating. Investigate the cause of the fault on
any cylinder that is operating below normal performance.
Result: There is a noticeable change in the sound of the
engine for each cylinder.
Contact the Dealer Solution Network (DSN).
i06224985
Engine Overspeeds
This procedure covers the following diagnostic code:
Table 29
Diagnostic Trouble Codes for the Engine Pressure Sensors
J1939
Code
Description
Notes
190-15 Engine Speed : High -
least severe (1)
The Electronic Control Module (ECM) detects that the engine speed has exceeded 3100 rpm for at least
5 seconds.
If equipped, the warning lamp will flash.
The Electronic Control Module (ECM) limits the flow
of fuel in order to prevent the engine speed from
exceeding the maximum rpm. When the engine
speed has dropped to less than the maximum rpm,
the engine overspeed diagnostic code will be reset.
The following operating conditions can cause the
engine speed to exceed this value:
• On a mobile machine, an incorrect transmission
gear is selected.
• Use of an incorrect fuel
• Combustible gases in the air inlet for the engine
If the engine speed exceeds the maximum rpm, the
ECM illuminates the warning lamp and an engine
overspeed diagnostic code is logged. No
troubleshooting is required.
UENR0612-07 73
Symptom Troubleshooting
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