Continuity Checks - Kohler 6VSG Service Manual

See the wiring diagram in Section 7 for the starter
relay connections.

5.10 Continuity Checks

!
Hazardous voltage. Moving parts.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
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.
Component
P1 wiring harness
Controller wiring
Low oil pressure (LOP) switch * Lead 13 and ground
Temperature sensor (CTS) *
* Section 5.7, Fault Shutdown Tests
Figure 5-31 Continuity Checks
TP-6844 1/13
WARNING
Ohmmeter
Connections
P1-2 and ground
P2-6, P2-7, and P2-8
(stator leads 1, 2, and 3)
P2-3 and P2-4 (stator
leads 1 and 2)
P1-1 and battery
positive (+)
(engine block)
P1-9 and P1-10
To further check
disconnect the battery and remove wiring harness
plugs from the controller circuit board.
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.
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
Ohmmeter Generator Set
Scale State
R x 1 OFF
R x 1 OFF
R x 1 OFF
R x 100 OFF
R x 100 OFF
R x 100 OFF
Section 5 Component Testing and Adjustment
generator set components,
Use an
Ohmmeter Readings for
Operative Components
Less than 1 ohm (continuity).
Any other reading indicates a
poor ground connection
Less than 1 ohm (continuity).
If no continuity, check wiring.
Less than 1 ohm (continuity).
If no continuity, check wiring.
Less than 1 ohm (continuity).
If no continuity is found, check
wiring.
Less than 1 ohm (continuity).
No continuity indicates a faulty
switch and/or wiring.
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.
A
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