TM 9-6115-730-24
0013
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
Injector Solenoid Test
Use the Injector Solenoid Test and Figure 5 to aid in diagnosing an open circuit or a short circuit while the engine
is not running. The Injector Solenoid Test briefly activates each solenoid. A good solenoid will create an audible
click when the solenoid is activated. The Cat ET will indicate the status of the solenoid as OK, Open, or Short.
NOTE
Two injector solenoids share a common return wire (FO-2, sheet 2). For this reason, an open
circuit or a short circuit in a return wire could cause diagnostic codes for two injector solenoids.
Figure 5. Injector Solenoid Circuit.
