Recommended Actions
Note: Complete the procedure in the order in which
the steps are listed.
Table 87
Troubleshooting Test Steps
Values Results
1. Diagnostic Codes
A. Use the electronic service tool to check for active or logged
codes.
Engine Derate
or Diagnostic
Codes
Result: A diagnostic code is present.
Repair: Troubleshoot the code.
Result: A diagnostic code is not present.
Proceed to Test Step 2.
2. Parameters in the Electronic Control Module (ECM)
A. Use the electronic service tool to verify that the correct pa-
rameters are being used. Refer to Troubleshooting, “Configu-
ration Parameters” for additional information.
Parameters Result: The parameters are not correct.
Repair: Input the correct parameters. Refer to Troubleshoot-
ing, “Configuration Parameters” for additional information.
Result: The parameters are correct.
Proceed to Test Step 3.
3. Air Intake and Exhaust System
A. Observe the check engine lamp. Check for an air filter re-
striction indicator, if equipped. Replace a plugged air filters.
Refer to the Operation and Maintenance Manual.
B. Check the air inlet and exhaust system for restrictions and/
or leaks.
Restrictions Result: There are restrictions in the air inlet or exhaust
system.
Repair: Make the necessary repairs, Refer to Systems Oper-
ation/Testing and Adjusting, “Air Inlet and Exhaust System -
Inspect” for additional information.
Result: There are no restrictions in the air inlet or exhaust
system.
Proceed to Test Step 4.
4. Valve Lash
A. Check the valve lash.
Valve lash Result: The valve lash is incorrect.
Repair: Check the valve lash. Refer to Systems Operation,
Testing, and Adjusting, “Engine Valve Lash - Inspect” for the
correct procedure.
Result: The valve lash is correct.
For engines with a single turbocharger, proceed to Test Step
5.
For engines with twin turbochargers, proceed to Test Step 6.
(continued)
172 UENR4469-36
Symptom Troubleshooting
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
To Next Page
Loading...
