Table 108
Troubleshooting Test Steps
Values Results
1. Intake Air Filter
A. Check the air filter restriction indicator, if equipped.
B. Ensure that the air filter is clean and serviceable.
Air filter Result: The air filter is blocked.
Repair: Replace the air filter element. Refer to the Operation
and Maintenance Manual, “Engine Air Cleaner Element -
Replace”.
Result: The air filter is OK.
Proceed to Test Step 2.
2. Air Intake System
A. Check the air intake system for the following defects:
· Blockages
· Restrictions
· Damage to the air intake ducts and hoses
· Loose connections and air leaks
Air intake Result: The air intake system is blocked, restricted, damaged,
or loose.
Repair: Make all necessary repairs to the air intake system.
Result: The air intake system is OK.
Proceed to Test Step 3.
3. Wastegate Regulator
A. Use the electronic service tool to check for diagnostic co-
des that relate to the wastegate regulator.
Wastegate
regulator
Result: Diagnostic codes are present that relate to the waste-
gate regulator.
Repair: Rectify the cause of any related codes. Refer to Trou-
bleshooting, “Diagnostic Trouble Codes”.
Result: There are no diagnostic codes that relate to the
wastegate regulator.
For engines that have a single turbocharger, proceed to Test
Step 4.
For engines that have twin turbochargers, proceed to Test
Step 5.
(continued)
210 UENR4469-36
Symptom Troubleshooting
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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