Perkins M216C - Page 187

KENR9126 187
Troubleshooting Section
Use the electronic service tool in order to perform the
“Fuel System Ve
rification Test”. The “Fuel System
Verification Test” is used to check that the system
operates correctly after a repair has been made.
g01336666
Illustration 75
Typical example of the electronic unit injector
Test Step 1. Check fo r Diagnostic Codes
That Are Related to this Procedure
A. Connect the electronic service tool to the
diagnostic connector.
B. Turn the keyswitch to the ON position.
C. Check for logged diagnostic codes that are related
to this procedure.
D. Make a note of the logged diagnostic codes.
Expected Result:
Expected Result 1
One or more of the following diagnostic codes are
logged:
•
1-2 Cylinder #1 Injector erratic, intermittent, or
incorrect
•
2-2 Cylinder #2 Injector erratic, intermittent, or
incorrect
•
3-2 Cylinder #3 Injector erratic, intermittent, or
incorrect
•
4-2 Cylinder #4 Injector erratic, intermittent, or
incorrect
•
5-2 Cylinder #5 Injector erratic, intermittent, or
incorrect
•
6-2 Cylinder #6 Injector erratic, intermittent, or
incorrect
Expected Result 2
On six cylinder engines, three injectors that share a
common supply indicate a diagnostic code.
Note: Injectors 1, 2 and 3 share a common injector
driver circuit in the ECM. Injectors 4, 5 and 6 share a
common driv
er circuit in the ECM. If three injectors
that share a common supply indicate a diagnostic
code then this is probably caused by a faulty ECM.
Results:
•
OK – Result
1 One or more diagnostic codes are
logged. Proceed to Test Step 2.
•
OK – Result
2 On six cylinder engines, three
injectors that share a common supply indicate a
diagnostic code. Proceed to Test Step 3.
•
Not OK – No related diagnostic codes are logged.
STOP.
Test Step 2. Check the Faulty Cylinder
Numbers
A. Use the e
lectronic service tool in order to make a
note of the logged diagnostic codes.
B. Use the
noted diagnostic codes in order to check
the cylinders for faulty injectors.
Expec
ted Result:
The diagnostic codes indicate the cylinder numbers
that h
ave faulty injectors.
Results:
•
OK – No related diagnostic codes are logged.
STOP.
•
Not OK – The diagnostic codes indicate the
cylinder numbers that have faulty injectors.
Repair: Replace the faulty injectors.
Use
the electronic service tool in order to program
the replacement injector trim files . Refer to
Troubleshooting, “Injector Trim File” for further
in
formation.
Use the electronic service tool in order to clear the
lo
gged codes.
Turn the keyswitch to the ON position.
Start the engine.