Perkins 1106D Troubleshooting Manual page 188

188
Troubleshooting Section
G. Follow the instructions that are provided in the
cylinder cutout test. The cylinder cutout tests are
interactive so the procedure is guided to the finish.
Note: The "Manual Cylinder Cutout Test" is also
available. Access the manual test by selecting the
"Change" button on the screen for the cylinder
cutout test. The "6 Cylinder Cutout Test" is the
recommended starting procedure. The automated
tests run twice collecting data. The two sets of data
are analyzed and an "OK" or "Not OK" result is
displayed.
H. Check for active diagnostic codes and for logged
diagnostic codes that are related to the injector
solenoids.
Expected Result:
All cylinders indicate "OK" on the Perkins EST.
Results:
•
OK – All cylinders indicate "OK".
Repair: If the engine is misfiring or if the
engine has low power, refer to Troubleshooting,
"Engine Misfires, Runs Rough or Is Unstable"
and Troubleshooting, "Low Power/Poor or No
Response to Throttle".
If a diagnostic code results from running the
cylinder cutout test, proceed to Test Step 4.
•
Not OK – One or more cylinders displayed "Not
OK" during the test. Proceed to Test Step 4.
Test Step 4. 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.
H. Perform the "Injector Solenoid Test" at least two
times.
Expected Result:
All cylinders indicate "OK".
Results:
•
OK – There is not an electronic fault with the
injectors at this time.
Repair: If the "Cylinder Cutout 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 8.
Test Step 5. Check the Harness between
the ECM and the Valve Cover Base for an
Open Circuit
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. Disconnect the connectors from the valve cover
base.
C. Turn the keyswitch to the ON position.
D. Fabricate a jumper wire 100 mm (4 inch) long with
terminals on both ends of the wire.
SENR9982