Fuel Rail Pump Solenoid - Test - Perkins NJ Series Troubleshooting Manual

SENR9982-01
F. Insert one end of the jumper into the ECM
connector. Insert the other end of the jumper into
the sensor connector of the engine harness.
G. Reconnect the connector for the ECM harness
and the sensor connector.
H. Turn the keyswitch to the ON position.
I. Use the Perkins EST in order to monitor the
"Active Diagnostic Code" screen for either the
Voltage Above Normal diagnostic code for the
sensor or the Voltage Below Normal diagnostic
code for the sensor.
Expected Result:
The diagnostic code disappears when the jumper is
installed.
Results:
• OK – There is a fault in the wiring harness.
Repair: Perform the following repair:
1. Repair the faulty harness or replace the faulty
harness.
2. Clear all diagnostic codes.
3. Use the electronic service tool in order to clear
all logged diagnostic codes and then verify that
the repair eliminates the fault.
STOP.
•
Not OK – The fault is intermittent. Proceed to Test
Step 8.
Test Step 8. Perform the "Wiggle Test" on
the Perkins Electronic Service Tool (EST)
A. Select the "Wiggle Test" from the diagnostic tests
on the Perkins Electronic Service Tool (EST).
B. Choose the appropriate group of parameters to
monitor.
C. Press the "Start" button. Wiggle the wiring harness
in order to reproduce intermittent faults.
If an intermittent fault exists, the status will be
highlighted and an audible beep will be heard.
Expected Result:
No intermittent faults were indicated during the
"Wiggle Test".
Results:
• OK – No intermittent faults were found. The
harness and connectors appear to be OK. If this
test was required as part of another procedure,
return to that procedure and continue testing. If
this test has resolved the fault, return the engine
to service. STOP.
•
Not OK – At least one intermittent fault was
indicated.
Repair: Repair the harness or the connector.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.

Fuel Rail Pump Solenoid - Test

System Operation Description:
Use this procedure to troubleshoot the system when
one of the following diagnostic codes is active or
easily repeated:
• 1779-05 Fuel Rail #1 Pressure Valve Solenoid
current below normal
• 1779-06 Fuel Rail #1 Pressure Valve Solenoid
current above normal
Note: The fuel rail pump is installed on the engine at
the factory. The fuel rail pump is not serviceable part.
The fuel rail pump delivers fuel into the fuel rail at
very high pressure.
Use this procedure to troubleshoot the system when
there is a active diagnostic code or if a diagnostic
code can easily be activated or when another
procedure has directed you here.
The fuel rail pump solenoid is used to control the
output from the fuel rail pump. The solenoid receives
an electrical supply from the Electronic Control
Module (ECM). The fuel rail pump solenoid is then
energized when the fuel is required to be pumped
into the fuel rail. Varying the timing of the voltage to
the solenoid controls the fuel delivery from the fuel
rail pump.
When the fuel rail pump solenoid is deactivated, the
fuel that is not sent to the fuel rail is returned to the
fuel tank.
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Troubleshooting Section
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