Perkins NJ Series Troubleshooting Manual page 197

SENR9982-01
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
Test Step 2. Check for Logged Diagnostic
Codes that are Related to the Injector
Solenoids
A. Connect the Perkins EST to the diagnostic
connector.
B. Turn the keyswitch to the ON position.
C. Check for logged diagnostic codes that are related
to the injector solenoids on the Perkins EST.
Expected Result:
One or more diagnostic codes that are related to the
injector solenoids have been logged:
•
1-5 Cylinder #1 Injector current below normal
• 1-6 Cylinder #1 Injector current above normal
• 2-5 Cylinder #2 Injector current below normal
• 2-6 Cylinder #2 Injector current above normal
•
3-5 Cylinder #3 Injector current below normal
• 3-6 Cylinder #3 Injector current above normal
• 4-5 Cylinder #4 Injector current below normal
•
4-6 Cylinder #4 Injector current above normal
• 5-5 Cylinder #5 Injector current below normal (C6.6
engine only)
• 5-6 Cylinder #5 Injector current above normal
(C6.6 engine only)
•
6-5 Cylinder #6 Injector current below normal (C6.6
engine only)
• 6-6 Cylinder #6 Injector current above normal
(C6.6 engine only)
Results:
• OK – One or more diagnostic codes have been
logged. Proceed to Test Step 3.
•
Not OK – No diagnostic codes have been logged.
Proceed to Test Step 4.
Test Step 3. Use the "Injector Solenoid
Test"
A. Start the engine.
B. Allow the engine to warm up to the normal
operating temperature.
C. Stop the engine.
D. Turn the keyswitch to the ON position.
E. Access the "Injector Solenoid Test" by accessing
the following display screens in order:
•
"Diagnostics"
• "Diagnostic Tests"
• "Injector Solenoid Test"
F. Activate the test.
Note: Do not confuse the "Injector Solenoid Test"
with the "Cylinder Cutout Test". The "Cylinder Cutout
Test" is used to shut off fuel to a specific cylinder
while the engine is running. The "Injector Solenoid
Test" is used to actuate the injector solenoids while
the engine is not running. This allows the click of the
injector solenoids to be heard while the engine is off
in order to determine that the circuit is functioning
correctly.
G. As each solenoid is energized by the ECM, an
audible click can be heard at the valve cover.
Expected Result:
All cylinders indicate "OK".
Results:
•
OK – There is not an electronic fault with the
injectors at this time.
Repair: If the "Injector Solenoid Test" returned a
"Not OK" for any injector, refer to Troubleshooting,
"Engine Misfires, Runs Rough or Is Unstable".
STOP.
• Open – Note the cylinders that indicate "Open".
Proceed to Test Step 5.
• Short – Note the cylinders that indicate "Short".
Proceed to Test Step 4.
Test Step 4. Check the Variation of the
Injectors between Cylinders
A. Start the engine.
B. Allow the engine to warm up to normal operating
temperature.
C. After the engine is warmed to operating
temperature, access the "Cylinder Cutout Test" by
accessing the following display screens in order:
197
Troubleshooting Section