7-12 Component Testing and Adjustment TP-5648 8/93
Controller P2-6 and P2-4 Ohmmeter on R x 1 If good--zero ohms
switch scale. Place (continuity). Any
rocker switch in resistance other than
START position. zero or very low ohms--
replace switch.
P2-6 and P2-5 Ohmmeter on R x 1 If good--zero ohms
scale. Place (continuity). Any
rocker switch in resistance other than
STOP position. zero or very low ohms--
replace switch.
K20 relay coil P1-4 and P1-9 Ohmmeter on R x 1 If good--85 ohms. Low
scale resistance--shorted K20 relay
coil and/or wiring. High
resistance--open K20 relay
and/or wiring.
K25 relay coil P1-8 and P1-9 Ohmmeter on R x 1 If good--85 ohms. Low
scale resistance--shorted K25 relay
coil and/or wiring. High
resistance--open K25 relay
and/or wiring.
Starter relay P4-4 and battery (--) Ohmmeter on R x 1 If good--approx. 0.20--0.35
(‘S’ relay) cable. NOTE: J4 and scale. ohms at 80_ F (27_ C).
P4 must be
disconnected to
perform this test.
Controller 10 Battery positive (+) Ohmmeter on R x 1 If good--zero or very low
Amp. fuse cable and P1-14 scale. ohms. No reading
and wiring NOTE: J4 and P4 must (infinity)--open circuit or
be connected to fuse blown.
perform this test.
Glow plug P4-8 and P4-1 Ohmmeter on R x 1 If good--approx. 16--20 ohms
relay (C1) scale. at 80_F (27_C).
Ohmmeter
Component Connections Remarks Results
Figure 7-9. Engine/Generator Set Component Testing with Ohmmeter (Sheet 1 of 2)
To Next Page
Loading...
Need help?
General
