Continuity Checks - Kohler 17RES Manual

5.15 Continuity Checks

DANGER
Hazardous voltage. Moving parts.
Will cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Short circuits. Hazardous voltage/current will cause
severe injury or death. Short circuits can cause bodily injury
and/or equipment damage.
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
Component
Generator set master
switch
P1 wiring harness
Controller fuse and
wiring
Auxiliary winding fuse
20-amp fuse
Low oil pressure (LOP)
switch *
Temperature sensor
(CTS) *
Magnetic pickup
* See Section 5.10.2, Fault Shutdown Switches
Figure 5-40 Continuity Checks
72 Section 5 Component Testing and Adjustment
Do not contact electrical
Ohmmeter
Connections
RUN and VBAT
(See Figure 5-31)
AUTO and VBAT
(See Figure 5-31)
P1-23 and ground
P9-1 and P9-2 (stator
leads 11 and 44)
P9-6 and P9-7 (YEL and
ORG, stator leads 55
and 66)
P1-24 and battery
positive (+)
P9-7 (ORG) and stator
lead 55
Lead 13 and ground
(engine block)
P1-17 and P1-18
QCON1 and QCON2
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 5-40. Also
see Section 7, Wiring Diagrams.
Figure 5-40 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
components.
Note: Disconnect the generator set battery before
performing continuity checks to prevent damage
to the ohmmeter.
Generator Set
Ohmmeter Master Switch
Scale
Position
R x 100 RUN
OFF/RESET
R x 100 AUTO
OFF/RESET
R x 1 OFF/RESET
R x 1 OFF/RESET
R x 1 OFF/RESET
R x 100 OFF/RESET
R x 100 OFF/RESET
R x 100 OFF/RESET
R x 1000 OFF/RESET
R x 1000 OFF
faulty component; replace
Ohmmeter Readings for Operative
Components
Zero ohms (continuity). Any other
reading indicates a faulty switch.
No reading (open circuit). Any other
reading indicates a faulty switch.
Zero ohms (continuity). Any other
reading indicates a faulty switch.
No reading (open circuit). Any other
reading indicates a faulty switch.
Zero ohms (continuity)
Any other reading indicates a poor
ground connection.
Zero ohms (continuity). If no
continuity, check wiring.
Zero ohms (continuity). If no
continuity, check fuse F1 and wiring.
Zero ohms (continuity). If no
continuity is found, check fuse F3 and
wiring.
Zero ohms (continuity). If no
continuity is found, check for an open
circuit and/or a blown fuse.
Zero ohms (continuity). No continuity
indicates a faulty switch and/or wiring.
180--2500 ohms, depending on
engine temperature. See
Section 5.10.2. Zero ohms or an
open circuit indicates faulty wiring or
a faulty switch.
1.3 -- 1.9 kOhms. Resistance values
outside of this range indicate a faulty
pickup; replace the magnetic pickup.
faulty
TP-6519 8/17