Table 80
Troubleshooting Test Steps
Values Results
1. Diagnostic Codes
A. Establish communication between the electronic service tool and
the Electronic Control Module (ECM) . If necessary, refer to Trouble-
shooting, “Electronic Service Tools”.
B. Check if any codes are active or logged.
Diagnostic
code
Result: A code is active or logged.
Repair: Troubleshoot any codes before continuing with
this procedure.
Result: A code is not active or logged.
Proceed to Test Step 2.
2. Accessory Equipment
A. Check all accessory equipment for faults that may create exces-
sive load on the engine.
Accessories Result: An engine accessory is creating an excessive
load.
Repair: Repair or replace the engine accessory.
Result: An engine accessory is not creating an exces-
sive load.
Proceed to Test Step 3.
3. Power Mode Control (If Equipped)
A. Check whether the power mode control is using the Perkins data
link or the CAN data link and then use the appropriate test. Refer to
Troubleshooting, “Data Link - Test” or Troubleshooting, “CAN Data
Link - Test”.
B. Check the engine wiring harness for defects. Refer to Trouble-
shooting, “Electrical Connectors - Inspect”.
Power mode
control
Result: There is a fault in the data link.
Repair: Repair the data link, as necessary.
Result: There is a wiring fault.
Repair: Repair or replace the wiring, as necessary.
Result: The data link and the wiring are OK.
Proceed to Test Step 4.
(continued)
160 UENR4469-36
Symptom Troubleshooting
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