Table 22
Troubleshooting Test Steps
Values
Results
1. Diagnostic Codes
A. Establish communication between the electronic service tool and
the Electronic Control Module (ECM).
B. Check for active diagnostic codes.
Codes
Result:
A diagnostic trouble code is active or logged.
Troubleshoot any diagnostic codes before continuing with
this procedure.
Result:
A diagnostic trouble code is not active or logged.
Proceed to Test Step 2.
2. Insulation on the Exhaust Duct (If Equipped)
A. Check the insulation on the exhaust duct between the engine
and the Clean Emissions Module (CEM). Make sure that insulation
is not missing or damaged.
Insulation
Result:
The insulation is missing or damaged.
Repair or replace the insulation on the exhaust duct.
Result:
The insulation is OK.
Proceed to Test Step 3.
3. Exhaust Leaks
A. Thoroughly inspect the exhaust duct between the engine and the
CEM for leaks. Ensure that all connections are secure and no leaks
are present.
Exhaust leaks
Result:
There are exhaust leaks.
Make the necessary repairs, Verify that the repair has elimi-
nated the fault.
Result:
The exhaust duct is OK.
Proceed to Test Step 4.
4. Wastegate
A. Check for correct operation of the wastegate. Refer to Systems
Operation, Testing, and Adjusting, “Turbocharger - Inspect”.
Wastegate
Result:
The wastegate or the wastegate actuator is faulty.
Install a replacement turbocharger. Refer to Disassembly
and Assembly, “Turbocharger - Remove” and Disassembly
and Assembly, “Turbocharger - Install”.
Result:
The wastegate and the wastegate actuator are OK.
Contact the Dealer Solution Network (DSN).
i05873080
Engine Cranks but Does Not
Start
Probable Causes
Note:
Wait at least 30 seconds between attempts to
start the engine. The engine will not start unless the
keyswitch has been turned to the OFF position for at
least 30 seconds.
• Ground level shutdown switch
• Diagnostic codes
• Visible faults
• Air intake and exhaust system
• Fuel system
• Fuel filters
• Fuel rail Pressure Relief Valve (PRV)
• Fuel pump timing
• Low compression (cylinder pressure)
Recommended Actions
Note:
The procedures have been listed in order of
probability. Complete the procedures in order.
UENR0612
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