Troubleshooting

36 RENR2696-01
Troubleshooting Section
Recommended Ac
tions
Faulty Battery
1. Verify that the battery is no longer able to hold a
charge. Refer to Testing and Adjusting, “Battery
-Test”.
2. Replace the battery. Refer to Operation and
Maintenance,
“Battery - Replace”.
Auxiliary Device
1. V erify that the auxiliary device drained the battery
by being left in the ON position.
2. Charge the battery.
3. Verify that th
ebatteryisabletomaintainacharge.
i01798113
Can Not R each Top Engine
RPM
Note: If this problem occurs only under load, refer to
Troubleshooting, “Low Power/Poor or No Response
to Throttle”.
Probable Causes
•
Refer to the logged codes.
•
Fuel supply
•
Air intake and exhaust system
•
Individual malfunctioning cylinders
•
Valve lash
•
Low compression (cylinder pressure)
•
Fuel injection nozzles
•
Turbocharger (if equipped)
•
ECM parameters
•
Throttle signal from the throttle position sensor
Recommended Ac
tions
Diagnostic Codes
Check for active diagnostic codes on the electronic
service tool. Troubleshoot any active codes before
continuing wi
th this procedure.
Fuel Supply
1. Check the fuel pressure. Refer to Systems
Operation, Testing and Adjusting, “Fuel System
Pressure - Tes
t”.
2. Ensure that the fuel system has been primed.
Refer to Syst
ems Operation, Testing and
Adjusting, “Fuel System - Prime”.
3. Check the die
sel fuel for contamination. Refer to
Systems Operation, Testing and Adjusting, “Fuel
Quality - Test”.
4. Check for air in the fuel system. Refer to Systems
Operation, Testing and Adjusting, “Air in Fuel -
Te s t ” .
5. Check that the fuel lines are tight and secured
properly.
6. Check for fuel supply lines that are restricted.
7. Check the fuel filters.
8. Visually ch
eck the fuel tank for fuel. The fuel
gauge may be faulty.
9. If the engin
e has a water separator, check for
water in the fuel.
10. Ensure tha
t the fuel supply valve is in the full
OPEN position.
11. If the temp
erature is below 0 °C (32 °F), check
for solidified fuel (wax).
12. If the repa
irs do not eliminate the problem
proceed to “Air Intake and Exhaust System”.
Air Intake
and Exhaust System
1. Check the air filter restriction indicator, if equipped.
2. Ensure that the air filter is clean and serviceable.
3. Check the a
ir intake and the exhaust system for
the following defects:
•
Blockages
•
Restrictions