Generac Power Systems XT-EFI Series Manual page 44

Section 5 Engine Diagnostic Tests
If CONTINUITY was measured in step 6, continue
6.
testing.
If CONTINUITY was not measured, replace switch
7.
and test.
Set DMM to read AC volts and remove wire 11B
8.
from low idle switch. Place one meter lead on wire
11B and the other lead to the ground in control
panel. 120 VAC should be measured. If voltage
was measured, go to step 10.
If 120 VAC is not measured, place multi meter to
9.
measure Ohms. Remove wire 11B from circuit
breaker and low idle switch. The wire should have
continuity. If wire does not have continuity, repair or
replace wire.
Remove C1 plug between system control board
10.
the coil. Set DMM to read DC volts. From male side
of plug, place the leads on pins. With low idle
switch in ON position, 100VDC (12VDC for XT/
DXGNR7000 series) should be measured.
If voltage was not measured, replace system
11.
control board.
If voltage was measured, set multi meter to read
12.
Ohms. Place leads on female side of plug of coil.
The coil should read 1.723K Ohms (29.5 Ohms for
XT/DXGNR7000 series). If coil reads open,
replace.
Generator will not switch off low idle when load
is applied.
Check idle control transformer. Remove plugs from
13.
idle control transformer.
Set DMM to read Ohms between the leads of the
14.
idle control transformer 53.9 Ohms. If idle control
transformer reads open, replace. If transformer
reads resistances, replace control board.
38 Diagnostic Repair Manual