TM 5-4310-389-14
TEST
a.
Battery.
Ensure specific gravity of all cells is between 1.250 to 1.300.
b.
Start Switch.
1.
Remove start switch by removing retaining nut.
2.
Disconnect wires 1, 6 and 7 (figure 3-48, rear, item 8).
3.
With switch in OFF position, using a multimeter continuity should not exist between terminals.
4.
Place switch in RUN position. Battery and ignition terminal should have continuity.
5.
Place switch in START position. Continuity should exist between battery and start terminal.
c.
Relay Latch.
1.
With starter switch in RUN position, check for 12V on the battery terminal of the relay latch (B) and on both sides
of the fuse terminal. Replace fuse if required.
2.
Remove relay latch. Remove and note wire position.
3.
Using multimeter, test fuse for continuity. With relay latch button out, test terminal B and C. Circuit should be
open. B to S, open.
4.
Push latch button in 15 to 20 ohms. Continuity should be read between the S and C terminal and the S and B
terminal.
d.
Safety Bypass.
1.
Isolate switch.
2.
Check for continuity in ON position. Open circuit in OFF position.
e.
Condensate Drain Switch.
1.
Isolate switch.
2.
Check for continuity in normal position.
3.
Check for open circuit in the momentary position.
3-87
