Perkins 1106D Troubleshooting Manual page 187

SENR9982
Test Step 1. Inspect Electrical Connectors
and Wiring
Electrical shock hazard. The electronic unit injec-
tor system uses 67-73 volts.
A. Turn the keyswitch to the OFF position. A strong
electrical shock hazard is present if the keyswitch
is not turned OFF.
B. Thoroughly inspect connector P2. Thoroughly
inspect the connectors at the valve cover base.
Refer to Troubleshooting, "Electrical Connectors -
Inspect" for details.
C. Perform a 45 N (10 lb) pull test on each of the
wires in the ECM connector that are associated
with injector solenoids.
D. Check the screw for the ECM connector for the
correct torque of 5.0 N·m (44 lb in).
E. Check the harness and wiring for abrasion and for
pinch points from the injectors to the ECM.
Expected Result:
All connectors, pins, and sockets are completely
coupled and/or inserted and the harness is free of
corrosion, of abrasion and of pinch points.
Results:
•
OK – The harness is OK. Proceed to Test Step 2.
•
Not OK – There is a fault in the connectors and/or
the harness.
Repair: Repair the connectors or the harness
and/or replace the connectors or the harness.
Ensure that all of the seals are correctly in place
and ensure that the connectors are completely
coupled.
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:
•
1-05 Cylinder #1 Injector open circuit
•
1-06 Cylinder #1 Injector short
•
2-05 Cylinder #2 Injector open circuit
•
2-06 Cylinder #2 Injector short
•
3-05 Cylinder #3 Injector open circuit
•
3-06 Cylinder #3 Injector short
•
4-05 Cylinder #4 Injector open circuit
•
4-06 Cylinder #4 Injector short
•
5-05 Cylinder #5 Injector open circuit
•
5-06 Cylinder #5 Injector short
•
6-05 Cylinder #6 Injector open circuit
•
6-06 Cylinder #6 Injector short
Results:
•
OK – One or more diagnostic codes have been
logged. Proceed to Test Step 4.
•
Not OK – No diagnostic codes have been logged.
Proceed to Test Step 3.
Test Step 3. 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:
•
"Diagnostics"
•
"Diagnostic Tests"
• "Cylinder Cutout Test"
D. Set the engine speed to 1000 ± 20 rpm.
E. Select the start button at the bottom of the screen
for the cylinder cutout test on the Perkins EST.
F. Select the "6 Cylinder Cutout Test".
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Troubleshooting Section