KENR6933 63
Troubleshooting Section
4. Inspect the battery wires from the ECM to the
battery compar
tment. Refer to the Schematic
Diagram. Inspect the wires and the power relay.
Check the power and ground connections to the
ECM. Refer to t
he schematic diagram for more
information.
5. Select the “W
iggle Test” from the diagnostic tests
on the electronic service tool.
6. Choose the ap
propriate group of parameters to
monitor.
7. Press the “St
art” button. Wiggle the wiring harness
in order to reproduce intermittent faults.
Note: If an in
termittent fault exists, the status will be
highlighted and an audible beep will be heard.
8. Repair any fa
ults and ensure that the symptom
has been cleared. If the symptom is still present,
refer to “Fuel Supply”.
Fuel Supply
NOTICE
Do not crank the engine continuously for more than
30 seconds. Allow the starting motor to cool for two
minutes before cranking the engine again.
1. Visually check the fuel tank for fuel. The fuel
gauge may be faulty.
2. Ensure that the fuel supply valve (if equipped) is
in the full OPEN position.
3. If the temperature is below 0 °C (32 °F), check
for solidified fuel (wax).
4. Check the primary filter/water separator for water
in the fuel.
5. Check for fuel 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. Refer to Testing and
Adjusting, “Fuel System Pressure - Test”.
i02535522
Intermittent Low Power or
Power Cutout
Note: Use this
procedure only if the engine does not
shut down completely.
Probable Causes
•
Diagnostic co
des
•
Electrical connectors
•
ECM connection
•
Fuel supply
•
Intake manifold pressure
Recommended Actions
NOTICE
Do not crank the engine continuously for more than
30 seconds. Al
low the starting motor to cool for two
minutes before cranking the engine again.
Diagnostic Co
des
Check for active diagnostic codes and event codes
on the electro
nic service tool. Troubleshoot any
active codes before continuing with this procedure.
Electrical C
onnectors
1. Refer to Troubleshooting, “Electrical Connectors
- Inspect”.
2. Repair the electrical connectors or replace the
electrical c
onnectors.
3. Ensure that all the connector seals are in place
and that the c
onnectors have been correctly
installed.
4. Ensure that
the repairs have eliminated the fault.
If the fault has not been eliminated proceed to
“ECM Connection”.
ECM Connection
1. Check that t
he P2/J2 connector is correctly
connected.
2. Check that t
he P1/J1 connector is correctly
connected.
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