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 TM 9-4120-425-14&P
REMOTE CONTROL MODULE UNIT MAINTENANCE - Continued
0034-00
TEST
NOTE
Test of temperature selector switch (S2) and mode selector switch S1 can be
performed prior to disassembly by using connector P3 pin contacts as test points.
Refer to WP 0122-00 schematic diagram and figure 2.
Temperature Selector Switch S2(15) (Refer to Exploded View Figure 3)
1.
Turn mode selector switch S1(10) to OFF position.
2.
Check for continuity using a multimeter on the lowest ohm setting. Place probes on the connector pins 1 and 12 of
connector P3. Continuity should be indicated.
3.
Turn switch to COOLER (fully counterclockwise). No continuity should exist.
NOTE
Switch operates in temperature range of 90F to 60F (32.2C to 15.5C).
4.
Turn switch to WARMER (fully clockwise). Meter should show continuity as setting becomes higher than bulb
temperature.
Mode Selector Switch S1(12) (Refer to Exploded View Figure 3)
1.
Ensure temperature selector switch (S2) (15) is in WARMER position.
2.
Check continuity of mode selector switch S1 as follows:
a) Switch in OFF position no continuity should be indicated between connector pins 3 and 7; 5 and 8; or 6 and 1.
b) Switch in VENT position continuity should be indicated between connector pins 3 and 7.
c) Switch in HEAT position continuity should be indicated between connector pins 5 and 8.
d) Switch in COOL position continuity should be indicated between connector pins 6 and 1.
3.
Replace if switch fails test.
0034-00-3
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