Section 3 Engine Diagnostic Tests
38 Diagnostic Repair Manual
10. Remove C1 plug between system control board
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, 12VDC should be
measured.
11. If voltage was not measured, replace system
control board.
12. If voltage was measured, set DMM to read Ohms.
Place leads on female side of plug of coil. The coil
should read 29.5 Ohms. If coil reads open, replace.
Generator will not switch off low idle when load is
applied.
13. Check idle control transformer. Remove plugs from
idle control transformer.
14. Set DMM to read Ohms. The leads of the idle
control transformer (CT) should read 53.9 Ohms. If
idle control transformer reads open, replace. If
transformer reads resistances, replace control
board.
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