(Table 175, contd)
Troubleshooting Test Steps
Values Results
4. Flush the DEF Tank and Refill the DEF Tank
A. Turn the keyswitch to the OFF and ensure that the “Wait to Dis-
connect” lamp has switched off.
B. Flush the DEF tank and refill the DEF tank. Refer to Operation
and Maintenance Manual, “Diesel Exhaust Fluid - Flush” for the cor-
rect procedure.
Note: Only use DEF that meets ISO 22241 standards.
C. Turn the keyswitch to the ON position.
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 2 minutes after the DEF tank has
been filled.
Return the engine to service.
Result: The DEF level indicates “Conditions Not Met” 2
minutes after the DEF tank has been filled.
Proceed to Test Step 5.
5. Repair the DEF Tank Header
A. Repair the DEF Tank header sensor with the DEF Manifold Sen-
sor Kit. Refer to Disassembly and Assembly, Manifold (DEF Heater)
Sensor - Disassemble (Temperature, Level, Quality DEF Manifold
Sensor) and Manifold (DEF Heater) Sensor -Assemble (Tempera-
ture, Level, Quality DEF Manifold Sensor).
DEF Tank
Header
Result: The fault is eliminated.
Return the unit to service.
Result: The fault is still present.
Contact the Dealer Solutions Network (DSN).
i06556248
Electrical Power Supply - Test
Use this procedure to troubleshoot the electrical
system if a problem is suspected with the power to
the engines Electronic Control Module (ECM). Use
this procedure if any of the diagnostic codes in Table
176 are active or easily repeated.
Table 176
Diagnostic Trouble Codes for the Electrical Power Supply
J1939 Code
PDL Code Code Description
(code descriptions may vary)
Comments
168-3 168-3 Electrical System Voltage : Voltage Above
Normal
The ECM detects voltage that is above the
acceptable value.
168-4 168-4 Electrical System Voltage : Voltage Below
Normal
The ECM detects voltage that is below the
acceptable value.
3216-5 3002-5 Aftertreatment 1 Intake NOx : Current Below
Normal
The ECM detects current that is below the ac-
ceptable value
3216-6 3002-6 Aftertreatment 1 Intake NOx : Current Above
Normal
The ECM detects current that is above the
acceptable value
3226-5 3609-5 Aftertreatment 1 Outlet NOx : Current Below
Normal
The ECM detects current that is below the ac-
ceptable value
(continued)
314 UENR4469-36
Circuit Tests
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