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Page Title:
Table 6. Electrical System Troubleshooting Procedures - Continued. |
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 TM 5-2410-237-23
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 6. Electrical System Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. If voltage is not indicated in
19. Heater Will Not Operate or Will Not
h. Place heater switch in all
either step g or h, replace
Operate in High Speed or Low Speed
HIGH speed positions and
heater switch (WP 0193 00).
Position - Continued.
touch meter positive lead
to orange wires connected
to switch at fan. Observe
meter reading.
2. If voltage is not indicated in
both steps g and h, go to Table
6, Malfunction 19 Test 2.
3. If voltage is indicated in both
steps g and h, replace
defective fan motor(s) (WP
2.
Test heater
switch
for
continuity.
a. Place battery disconnect
switch in OFF position.
b. Completely disconnect
heater switch harness.
c. Set
to
appropriate ohm (Ω)
range (WP 0242 00).
d. Connect meter positive
lead where black wire
connects (switch side).
e. Connect meter negative
lead to either of the other
two terminals (switch
side).
f. Toggle switch between all
three
positions
and
observe meter.
g. Repeat steps d through f
1. If continuity is indicated in
for
the
remaining
HIGH for orange wire and
terminal.
LOW for red wire, but not in
OFF position, repair heater
2. If continuity is not indicated
as stated above, replace heater
switch (WP 0193 00).
0006 00-78
Change 1
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