TP-6196 10/09
99
Section 6 Component Testing and Adjustment
To further check generator set components, disconnect
the battery and remove wiring harness plugs from the
controller circuit board. Use an ohmmeter to check the
continuity of the components listed in Figure 6-45. Also
see Section 8, Wiring Diagrams.
Figure 6-45 gives resistance readings for functional
components. A zero reading on the ohmmeter indicates
continuity. No ohmmeter reading indicates very high
resistance or an open circuit.
A measurement that
varies significantly from the value shown in the table
indicates
a
faulty
component;
replace
faulty
components.
Note:
Disconnect the generator set battery before
performing continuity checks to prevent damage
to the ohmmeter.
3
2
1
3
2
1
Master Switch in
RUN Position
Master Switch in
AUTO Position
Zero ohms (continuity) across
RUN and COM terminals
Zero ohms (continuity) across
COM and AUTO terminals
A
U
T
O
R
U
N
V
B
A
T
A
U
T
O
R
U
N
V
B
A
T
Figure 6-44
Generator Set Master Switch Continuity
Checks
Component
Ohmmeter
Connections
Ohmmeter
Scale
Generator Set
Master Switch
Position
Ohmmeter Readings for
Operative Components*
Generator set
master switch
RUN and VBAT (see
Figure 6-44)
R x 100
RUN
Zero ohms (continuity). Any other reading
indicates a bad switch.
OFF/RESET
No reading (open circuit). Any other reading
indicates a bad switch.
AUTO and VBAT
(see Figure 6-44)
R x 100
AUTO
Zero ohms (continuity). Any other reading
indicates a bad switch.
OFF/RESET
No reading (open circuit). Any other reading
indicates a bad switch.
P1 wiring
harness
P1-27 and ground
R x 1
OFF/RESET
Zero ohms (continuity). Any other reading
indicates a poor ground connection.
P15-1 and P15-3
(stator leads 11 and 44)
R x 1
OFF/RESET
Zero ohms (continuity). If no continuity,
check wiring.
P16-3 and P16-6 (stator
leads 55 and 66)
R x 1
OFF/RESET
Zero ohms (continuity). If no continuity,
check fuse F1 and wiring.
Controller fuse
and wiring
P1-24 and battery
positive (+)
R x 100
OFF/RESET
Zero ohms (continuity). If no continuity is
found, check fuse F3 and wiring.
Auxiliary winding
fuse 20 amp fuse
P16-3 and stator lead 55
R x 100
OFF/RESET
Zero ohms (continuity). If no continuity is
found, check for an open circuit and/or a
blown fuse.
Low oil pressure
(LOP) switch *
Lead 13 and ground
(engine block)
R x 100
OFF/RESET
Zero ohms (continuity). No continuity
indicates a bad switch and/or wiring.
Temperature
sensor (CTS) *
P1-8 and P1-9
R x 1000
OFF/RESET
180--2500 ohms, depending on engine
temperature. Zero ohms or an open circuit
indicates bad wiring or a bad switch.
* See Section 6.11.2, Fault Shutdown Switches
Figure 6-45
Continuity Checks
Summary of Contents for 12RES
Page 2: ......
Page 6: ...TP 6196 10 09 6 Notes ...
Page 34: ...TP 6196 10 09 34 Section 3 Troubleshooting Notes ...
Page 52: ...TP 6196 10 09 52 Section 4 ADC 2100 and DC 2200 Controllers Notes ...
Page 72: ...TP 6196 10 09 72 Section 5 ADC RES and DC RET Controller Notes ...
Page 100: ...TP 6196 10 09 100 Section 6 Component Testing and Adjustment Notes ...
Page 131: ......
