Table 175
Troubleshooting Test Steps
Values Results
1. Check for Diagnostic Codes
A. Establish communication between the electronic service tool and
the Diesel Exhaust Fluid Controller (DCU) . Refer to Troubleshoot-
ing, “Electronic Service Tools”, if necessary.
B. Turn the keyswitch to the ON position.
C. Look for active or logged codes.
Diagnostic
code
Result: A -12 diagnostic code is active.
Proceed to Test Step 2.
Result: A 1761-2 (3130-2) code is active.
Proceed to Test Step 4.
Result: A 3516-2 (3100-2) code is active.
Proceed to Test Step 5.
2. Check for Battery Voltage at the DEF Tank Header
A. Disconnect the harness at the DEF tank header.
B. Turn the keyswitch to the ON position.
C. Measure the voltage between terminals 3 and 4.
D. Turn the keyswitch to the OFF position.
Battery voltage Result: The measured voltage is less than 9.5V during
cranking.
Repair: Investigate the cause of the incorrect voltage.
Refer to Troubleshooting, “Electrical Power Supply -
Test”.
Result: The measured voltage is greater than 9.5V dur-
ing cranking.
Proceed to Test Step 3.
3. Ensure that the Application is on a Level Gradient
A. If necessary, move the application to a level gradient.
B. Wait at least 2 minutes. Turn the keyswitch to the ON position.
C. Connect to the electronic service tool.
D. Use the electronic service tool to check the DEF level
measurement.
Note: Use the electronic service tool for this step and not a gauge
on the application.
DEF Level Result: The DEF level indicates a value between 0 per-
cent and 100 percent.
Return the engine to service.
Result: The DEF level indicates “Conditions Not Met” 2
minutes after the application has been moved to a level
gradient.
Proceed to Test Step 4.
(continued)
UENR4469-36 313
Circuit Tests
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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