Perkins NJ Series Troubleshooting Manual page 193

SENR9982-01 193
Troubleshooting Section
If an open circuit is detected in the solenoid, a
diagnostic code is generated. The ECM continues to
try to fire the injector. If a short circuit is detected, a
diagnostic code is generated. The ECM will disable
the solenoid circuit. The ECM will periodically try
to fire the injector. If the short circuit remains, this
sequence of events will be repeated until the fault
is corrected.
"Injector Solenoid Test"
Use the "Injector Solenoid Test" on the Perkins
Electronic Service tool (EST) to aid in diagnosing an
open circuit or a short circuit diagnostic code while
the engine is not running. The "Injector Solenoid
Test" will send a signal to each solenoid. The Perkins
EST will indicate the status of the solenoid as "OK",
"Open", or "Short".
Note: On four cylinder engines, the use of a shared
supply will mean that a short circuit in the wire that is
used as a supply for the injector solenoid will cause
two cylinders to have diagnostic codes.
Note: On six cylinder engines, the use of a shared
supply will mean that a short circuit in the wire that is
used as a supply for the injector solenoid will cause
three cylinders to have diagnostic codes.
g01208822
Illustration 78
Typical example of the fuel injector