Troubleshooting

42 RENR2696-01
Troubleshooting Section
3. If the crankshaft rotates freely proceed to “Starting
Motor Solenoid
or Starting Circuit”.
4. If the crankshaft does not rotate freely, check the
engine for the
following problems:
•
Seized piston
•
Defects in the drive gears
•
Fluidinthecy
linder bores
•
Improper timing of valves
Crank Without Injection (If Equipped)
1. Check if the cr
ank without injection plug is
connected.
2. If the crank wi
thout injection plug has been
connected, connect the normal running plug.
3. Check if the e
ngine will start.
4. If the repairs do not eliminate the problem refer
to Troublesh
ooting, “Crank without Inject Circuit
-Test”.
Starting M ot
or Solenoid or S tarting
Circuit
1. Turn the keys
witchtotheOFFposition.
2. Check the positive battery and negative battery
connections
to the E CM.
3. Perform a pull test on positive battery wires and
negative ba
ttery wires. Refer to Troubleshooting,
“Electrical Connectors - Inspect”.
4. Check the ne
gative battery connection on the
ground stud.
5. Check the co
nnections of starting motor terminals.
6. Check the starting motor solenoid.
7. Remove the starting motor and check the starter
motor for proper operation. Check the pinion of the
starting m
otor and check the flywheel ring gear.
8. Check the operation of the starting switch. Refer
to Trouble
shooting, “Electrical power Supply
Circuit - Test”.
Valve lash
1. Check the valve lash and reset the valve lash if it
is necessary. Refer to Systems Operation, Testing
and Adjusting
, “Engine Valve Lash - Inspect and
Adjust”.
Ensure that th
e repairs have eliminated the active
diagnostic codes before attempting to restart the
engine.
If the engine will not start proceed to “Air Intake and
Exhaust System”.
Fuel Injectors
1. Remove the fu
el injectors from the cylinder
head. Refer to Disassembly and Assembly, “Fuel
Injectors - Remove”.
2. Check the fuel injectors. Refer to Systems
Operation, Testing and Adjusting, “Fuel Injectors
-Test”.
3. If the repairs do not eliminate the problem proceed
to “Air Inle
t Heater Starting A id”.
Air Inlet Heater Starting Aid
1. Check that the air inlet heater is receiving both an
electrical current and a supply of fuel. Check the
operation o
f the air inlet heater starting aid. Refer
to Systems Operation, “Air Inlet Heater - Test”.
2. If the repai
rs 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 exhaust systems for the
following defects:
•
Blockages
•
Restrictions
•
Damage to lines or hoses
4. Repair any
defects before attempting to restart
the engine.
5. If the engi
ne will not start proceed to “Low
Compression”.