TM 9-2350-247-20-1
VEHICLE COMPARTMENT HEATER MALFUNCTIONS—Continued
0085 00
10Y
1. Listen to heater until blower shuts off.
2. Does blower shut off in less than five minutes?
YES
NO
10YN
1. Faulty heater flame detector switch.
See
TM 9-2540-205-24&P.
11Y
1. Heater is operating properly.
2. Verify no faults found.
BY
1. Remove heater-on indicator cover lens (1) and bulb (2).
2. Check continuity between bulb center contact and base.
3. Does multimeter indicate continuity?
YES
NO
BYN
1. Replace heater-on bulb
(WP 0472 00).
2. Verify no faults found.
2BY
1. Remove main harness circuit 400 plug (1) from control box
jack (2).
2. Measure voltage between main harness circuit 400 plug (1) pin
and ground.
3. Does multimeter read 17 volts or more?
YES
NO
2BYN
1. Repair main harness circuit 400
between master switch and heater
control box (WP 0294 00).
2. Verify no faults found.
0085 00-3
