7-18 Component Testing and Adjustment TP-5648 8/93
Fuel Solenoid
The fuel solenoid serves to pull the injector pump lever
to the “fuel on” position when energized. The fuel
solenoid is spring loaded to return the injector pump
lever to the “fuel off” position when de-energized.
The 10CCOZ models use a three-lead fuel solenoid.
This solenoid has a lead marked “P,” which energizes
the“pull”coilonlyduring cranking. During operation,the
lead “6” energizes the “hold” coil and the lead marked
“N” is the common ground.
Current (amps.) and resistance readings are shown in
Figure 7-16. Resistance readings can be taken to
determine if the solenoid windings are open or shorted.
These tests must be made with fuel solenoid
disconnected from engine wiring harness. See
Figure 7-17 for fuel solenoid location.
Fuel Solenoid Reading
“pull” current 31 amps.
“hold” current 0.8 amps.
Plunger “pull” resistance 0.387 ohms
Plunger “hold” resistance 14.94 ohms
Figure 7-16. Fuel Solenoid Readings
1-932
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1. Fuel Solenoid
Figure 7-17. Fuel Solenoid Location
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