Table 200
Troubleshooting Test Steps
Values Results
1. Check that the latest available software is installed and
there are no applicable Technical Information Bulletins or
Special Instruction documentation released
A. Ensure that the latest software is installed on the engine ECM.
B. Ensure that the latest software is installed on the Dosing Con-
trol Unit (DCU)
If necessary, refer to Troubleshooting, “ECM Software - Install” for
the correct procedure.
C. Ensure all Technical Information Bulletins and/or Special In-
struction documented for the issue and/or product are reviewed
and followed.
Software and
Publications
Result: The latest software is not installed.
Repair: Install the latest engine ECM software and then in-
stall the latest DCU software. If necessary, refer to Trou-
bleshooting, “ECM Software - Install” for the correct
procedure.
Start the engine and wait for 2 minutes.
If the fault is cleared, return the engine to service.
If the fault is still present, proceed to Test Step 2.
Result: Applicable Technical Information Bulletin/Special
Instruction publication is available.
Repair: Review and follow instructions provided in the
available publication.
Result: The latest software is installed.
Proceed to Test Step 2.
2. Determine the Diagnostic Code
A. Establish communication between the electronic service tool
and the engine Electronic Control Module (ECM) . Refer to Trou-
bleshooting, “Electronic Service Tools”, if necessary.
B. Determine the diagnostic trouble code that is active.
Diagnostic trou-
ble code
Result: A 4364-2 (E1410 (2)) diagnostic code is active or
recently logged.
Proceed to Test Step 3.
Result: A 3216-7 (E1431 (2)) or 3226-7 (E1432 (2)) diag-
nostic code is active or recently logged.
Proceed to Test Step 4.
3. Check that the NOx Sensors are Installed Correctly
A. Verify that the sensors are located in the correct position.
· The engine out NOx sensor has black protective coating on the
wires.
· The tailpipe out NOx sensor has gray protective coating on the
wires.
B. If the sensors are installed in the wrong positions, install the
sensors in the correct positions. Refer to Disassembly and As-
sembly, “Nitrogen Oxide Sensor - Remove and Install” for the cor-
rect procedure.
Correct
installation
Result: The NOx sensors are already in the correct
locations.
Proceed to Test Step 4.
Result: The NOx sensors have been swapped.
Proceed to Test Step 9.
4. Perform a ““DEF Dosing System Accuracy Test”” using the
Electronic Service Tool
A. Use Tooling A and Tooling B and refer to Systems Operation,
Testing and Adjusting, Aftertreatment SCR System Dosing - Test
for the procedure.
DEF Dosing
System Accu-
racy Test
Result: Droplets form around the DEF injector nozzle dur-
ing the prime pressurization phase of the test. Refer to Il-
lustration 124
Repair: Install a replacement DEF injector. Refer to Disas-
sembly and Assembly, DEF Injector and Mounting - Re-
move and Install.
Proceed to Test Step 5
Result: Droplets do not form around the DEF injector noz-
zle during the prime pressurization phase of the test.
Proceed to Test Step 5
362 UENR4469-36
Circuit Tests
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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