ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3-444-12
MARINE CORPS TM 09244A/09245A-24/2
TABLE 2-9. Diagnostic Connector Connection Points
NOTE
The Diagnostic Connector can be used as a troubleshooting tool. Refer to FIGURE 2-17
for pin positions.
PIN
DESCRIPTION
EXPECTED OUTPUT*
B
Chassis ground (GND)
Continuity 0 volts
C
DC paralleling voltage for governor synchronization
0-20 VDC (*, 5)
D
Chassis gound (GND)
Continuity 0 volts
E
Paralleling voltage for voltage regulator
0-20 VAC set freq. (*, 5)
F
DC exciter field voltage (positive)
0-60 VDC (*, 6)
G
DC paralleling voltage for governor synchronization
0-20 VDC (*, 5)
H
Paralleling voltage for voltage regulator
0-20 VAC set freq. (*)
J
DC exciter field voltage (negative)
0-60 VDC (*, 7)
M
DC voltage input to governor
24 VDC (*)
N
DC starter motor solenoid coil
24 VDC (2 or 3)
O
DC voltage across fuel pump (aux)
24 VDC (1)
P
DC voltage S1, terminal
724VDC (2)
S
DC voltage across engine fuel solenoid coil4
VDC(*)
T
DC voltage across starter crank relay coil
24 VDC (2 or 3)
U
DC voltage (output of DC circuit breaker)
24 VDC (*)
V
DC voltage across output circuit interrupter coil
24 VDC (*)
X
DC starter motor (motor side of solenoid contacts)
24 VDC (2 or 3)
Z
DC voltage across fuel level contacts
24 VDC (4)
a
DC voltage across low oil pressure switch
0 volts (*)
b
DC voltage across low oil pressure switch
24 VDC (4)
c
DC voltage across ether bottle solenoid coil
24 VDC when selected (2)
d
DC battery charging voltage
24-27.6 VDC (*)
x
Input frequency sensing voltage to governor
2-6 volts, 0-4000 Hz (3, 8)
y
Input frequency sensing voltage to governor
2-6 volts, 0-4000 Hz (3, 8)
*
With generator set operating.
(1)
Auxiliary fuel pump in operation (note fuel level), MASTER
SWITCH in PRIME & RUN AUX FUEL position
(2)
During engine starting
(3)
Use DEAD CRANK switch
(4)
MASTER SWITCH in PRIME & RUN position
(5)
AC Circuit Interrupter dosed
(6)
Read between pins F and J
(7)
Read between pins J and F
(8)
Read between pins x and y
2-94 Change 2
