Troubleshooting

RENR2696-01 41
Troubleshooting Section
•
The electrical power supply t o the electronic
service tool
•
The engine protection device is disabling the
power supply.
•
The electrical power supply to the ECM
•
The engine harness
•
Battery volta
ge
Recommended A
ctions
Connect the communication adapter of the electronic
service tool t
o the PC and to the diagnostic connector.
Turn the ignition switch to the ON position. If the
communication adapter for the electronic service tool
activates, a
nd the red power indicator lamp is ON,
proceed to step 3. If the red power indicator lamp
remains OFF proceed to step 1.
1. Check the battery voltage to the Data Link
Connector. Refer to Troubleshooting, “Data Link
Circuit - Te
st, Test Step 4”.
2. Change the electronic service tool components.
Refer to Tro
ubleshooting, “Data Link Circuit - Test,
Test Step 6”.
3. Start the pr
ogram for the electronic service tool.
If the electronic service tool reports “Connected
and 1 (or more) module detected” then STOP. If
the electr
onic service tool reports “The interface
hardware is not connected” then proceed to step
4. If the electronic service tool cannot connect to
the ECM the
n proceed to step 5.
4. Inspect the cable from the PC to the
communic
ation adapter. Verify that the correct PC
port has been used. Inspect the cable from the
electronic service tool to the diagnostic connector.
Change th
e electronic service tool components.
Refer to Troubleshooting, “Data Link Circuit - Test,
Test Step 6”.
5. Check the battery voltage at the ECM if the
electronic service tool cannot connect to the ECM.
Refer to
Troubleshooting, “Data Link Circuit - Test,
Test Step 3”.
6. Connect
the electronic service tool directly
to the ECM and follow the test procedure as
Troubleshooting, “Data Link Circuit - Test, Test
Step 5”
.
7. Connect the electronic service tool and the ECM
to anot
her battery. Proceed to Troubleshooting,
“Data Link Circuit - Test, Test Step 7”.
i02270216
Engine Cranks bu t Will Not
Start
Probable Causes
•
Refer to the lo
gged codes.
•
Crank without injection (if equipped)
•
Starting motor or starting circuit
•
Valve lash
•
Fuel injectors
•
Air inlet heater starting aid
•
Air intake and
exhaust system
•
Low compression (cylinder pressure)
•
Fuel supply
Recommended Actions
Diagnostic Co
des
Check for active diagnostic codes on the electronic
service tool.
Troubleshoot any active codes before
continuing with this procedure.
Visual Check
s
1. Visually inspect the engine for the following faults:
•
Missing components
•
Damaged comp
onents
•
Oil leaks
•
Coolant leaks
•
Fuel leaks
•
Hydraulic leaks
•
Check electrical cables for damage. Check that
the electrical cables are properly secured.
•
Check for the proper level of fuel, oil, coolant,
and hydraulic fluids
2. Try to start the engine. If the engine does not start,
verify that the crankshaft is rotating. Use a suitable
hand tool in
order to rotate the crankshaft.