
TROUBLESHOOTING AND ELECTRICAL SYSTEM
Test Procedures
Page 11-24
2005 FE350 Gasoline Vehicle Maintenance and Service Supplement
11
Test Procedure 9 – Starter/Generator (Starter Function), Continued:
5. Using a multimeter set to 200 ohms, place the red (+) probe on the A1 terminal and the black (–) probe
on the A2 terminal. The reading should be continuity. If the reading is incorrect, a possible open or poor
contact in a brush assembly and/or open armature windings may be the cause. The starter/generator will
need to be removed from the vehicle and disassembled by a qualified technician.
See Starter/Generator
Removal, Section 12, Page 12-1.
6. With the wires still disconnected, using a multimeter set on 200 ohms, place the red (+) probe on the F1
terminal and the black (–) probe on the F2 terminal. The reading should be between approximately 0.1
and 0.3 ohms. If the reading is incorrect, a possible open field coil or bad connections at terminals may
be the cause. The starter/generator will need to be removed from the vehicle and disassembled by a
qualified technician.
See Starter/Generator Removal, Section 12, Page 12-1.
7. With the wires still disconnected, using a multimeter set to 200 ohms, place the red (+) probe on the DF
terminal and the black (–) probe on the F1 terminal. The reading should be between 4.5 and 5.5 ohms.
If the reading is incorrect, a possible grounded DF terminal and/or grounded field coil may be the cause.
The starter/generator will need to be removed from the vehicle and disassembled by a qualified techni-
cian.
See Starter/Generator Removal, Section 12, Page 12-1.
TEST PROCEDURE 10 – WIRE CONTINUITY
See General Warning, Section 10, Page 10-1.
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warning, Section 10, Page 10-1.
2. To test a wire for continuity, disconnect either end from the electrical component it is attached to.
3. Set the multimeter to 200 ohms and place the red (+) probe on the terminal at one end of the wire. Place
the black (–) probe on the other terminal end of the wire. The reading should be continuity. If the reading
is incorrect, repair or replace the wire.
Figure 11-20 Check Starter Terminal Continuity
Figure 11-21 Jumper Wire Ground – DF to A2
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED
F2
DF
F1
A2
A1
YELLOW
WIRE
STARTER /
GENERATOR
200 OHM
SETTING
YELLOW
WIRE
JUMPER
WIRE
STARTER /
GENERATOR
F2
DF
F1
A1
A2