TM 9-2320-289-20
Table 2-4. Electrical Troubleshooting (Con’t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Check resistance through lead from resistor to evaporator motor. Resistance
should be 0 ohms with switch in high position, 1.4 ohms with switch in medium
position, and 4.5 ohms with switch in low position.
If resistance is correct, check security and condition of ground. If ground is
good, replace evaporator motor. (See paragraph 10-34)
If resistance is not correct in all positions, replace blower resistor (see
paragraph 10-34) and retest.
AMBULANCE BODY SERVICE OUTLETS
3.
15 amp OUTLETS (ONE OR MORE) INOPERATIVE (ACCESSORIES WORK AT OTHER
OUTLETS)
4.
60 amp SERVICE
Replace fuse if burned out.
If fuse is good, trace circuit.
OUTLET INOPERATIVE
Step 1.
Remove access cover from ambulance body fuse panel. (See paragraph 4-13)
Check applicable 15 amp fuse.
(See wiring diagram F-25)
NOTE
Circuit breaker cannot be manually reset. After 2-3 minutes cool down
time, it will reset itself.
Step 1.
Remove access cover from ambulance body fuse panel. (See paragraph 4-13)
Allow circuit breaker to reset, Check for voltage from circuit breaker.
If there is no voltage, check for voltage from circuit breaker back to positive
terminal board.
If there is voltage, replace circuit breaker. (See paragraph 4-13)
2-58
