Perkins 1106D Troubleshooting Manual page 166

166
Troubleshooting Section
Ensure that all of the seals are correctly in place
and ensure that all connectors are correctly
coupled.
Use the Perkins EST in order to perform the fuel
rail pump solenoid test.
Verify that the repair eliminated the fault.
STOP.
•
Not OK – The fuel rail pump solenoid is faulty.
Repair: Temporarily connect a new fuel rail pump
to the harness, but do not install the fuel rail pump
to the engine.
Reconnect the P2 to the ECM. Check the screw
for the ECM connector for the correct torque of
5.0 N·m (44 lb in).
Use the Perkins EST in order to perform the fuel
rail pump solenoid test.
Verify that the repair eliminated the fault.
If the diagnostic code has been cleared, then install
the new fuel rail pump to the engine. Refer to
Disassembly and Assembly Manual, "Fuel Injection
Pump- Install".
Verify that the repair eliminates the fault.
STOP.
Test Step 5. Check the ECM and the
Harness
A. Turn the keyswitch to the OFF position.
B. Disconnect the P532 connector from the fuel rail
pump solenoid.
C. Insert a jumper wire across P532.
D. Turn the keyswitch to the ON position.
E. Use the Perkins EST in order to perform the fuel
rail pump solenoid test.
F. Use the Perkins EST in order to monitor the status
screen.
Expected Result:
A 1779-06 diagnostic code is displayed.
Results:
•
OK – The ECM and the ECM connections function.
The solenoid is not an open circuit. Recheck the
diagnostic codes. Proceed to Test Step 6.
•
Not OK – The ECM is suspect. Proceed to Test
Step 8.
Test Step 6. Check the Fuel Rail Pump
Solenoid for a Short Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the fuel rail pump solenoid connector.
C. Turn the keyswitch to the ON position.
D. Use the Perkins EST in order to perform the fuel
rail pump solenoid test.
Expected Result:
A low current diagnostic code is displayed. The high
current diagnostic code is not displayed.
Results:
• OK – A low current diagnostic code is displayed.
The harness has no shorts to supply or ground.
The fuel rail pump solenoid is faulty.
Repair: Temporarily connect a new fuel rail pump
to the harness, but do not install the fuel rail pump
to the engine.
Reconnect P2 to the ECM. Check the screw for the
ECM connector for the correct torque of 5.0 N·m
(44 lb in).
Use the Perkins EST in order to perform the fuel
rail pump solenoid test.
Verify that the repair eliminates the fault.
If the diagnostic code has been cleared, then install
the new fuel rail pressure pump to the engine.
Refer to Disassembly and Assembly, "Electrical
Connectors - Inspect".
Verify that the repair eliminates the fault.
STOP.
•
Not OK – The harness is a short circuit or the ECM
is a short circuit. Proceed to Test Step 7.
Test Step 7. Check the Fuel Rail Pump
Solenoid Harness for a Short Circuit
A. Turn the keyswitch to the OFF position.
SENR9982