TP-6196 5/04
60
Section 5 Component Testing and Adjustment
Component
Ohmmeter
Connections
Ohmmeter
Scale
Generator Set
Master Switch
Position
Ohmmeter Readings for Operative
Components*
Generator set master
switch
RUN and COM
(See Figure 5-28)
R x 100
RUN
Zero ohms (continuity). Any other reading
indicates a bad switch.
switch
(See Figure 5 28)
OFF/RESET
No reading (open circuit). Any other
reading indicates a bad switch.
AUTO and COM
(See Figure 5-28)
R x 100
AUTO
Zero ohms (continuity). Any other reading
indicates a bad switch.
(S
g
5 8)
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.
Starter relay
(See illustration below)
Starter relay terminal and
relay base (ground)
R x 1
OFF/RESET
5--7 ohms. Lower resistance indicates a
shorted relay coil and/or wiring. High
resistance indicates an open relay coil
and/or wiring.
* See Section 5.9.2, Fault Shutdown Switches
Figure 5-29
Continuity Checks
Summary of Contents for 12RES
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