Kohler 6VSG, Service Manual, Page: 83 / 108

TP-6844 1/13 Section 5 Component Testing and Adjustment 83
See the wiring diagram in Section 7 for the starter
relay connections.
5.10 Continuity Checks
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily
injury and/or equipment damage. Do not contact electrical
connections with tools or jewelry while making adjustments
or repairs. Remove all jewelry before servicing the
equipment.
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
Figure 5-31 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.
For rectifier and stator resistance and continuity
checks, see Section 5.3, Rectifier Testing and Section
5.4, Stator.
Figure 5-31
Figure 5-31 Continuity Checks
WARNING
!
Hazardous voltage. Moving parts.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Component
Ohmmeter
Connections Ohmmeter
Scale
Generator Set
State
Ohmmeter Readings for
Operative Components
P1 wiring harness P1-2 and ground R x 1 OFF Less than 1 ohm (continuity).
Any other reading indicates a
poor ground connection
P2-6, P2-7, and P2-8
(stator leads 1, 2, and 3)
R x 1 OFF Less than 1 ohm (continuity).
If no continuity, check wiring.
P2-3 and P2-4 (stator
leads 1 and 2)
R x 1 OFF Less than 1 ohm (continuity).
If no continuity, check wiring.
Controller wiring P1-1 and battery
positive (+)
R x 100 OFF Less than 1 ohm (continuity).
If no continuity is found, check
wiring.
Low oil pressure (LOP) switch * Lead 13 and ground
(engine block)
R x 100 OFF Less than 1 ohm (continuity).
No continuity indicates a faulty
switch and/or wiring.
Temperature sensor (CTS) * P1-9 and P1-10 R x 100 OFF 180–2500 ohms, depending on
engine temperature. See
Section 5.7.2. Less than 1 ohm
or an open circuit indicates faulty
wiring or a faulty sensor.
* Section 5.7, Fault Shutdown Tests