TM 9-2350-247-20-1
VEHICLE COMPARTMENT HEATER MALFUNCTIONS—Continued
0085 00
3CY
1. Faulty vehicle compartment heater. Replace vehicle compartment
heater (WP 0427 00, WP 0428 00, WP 0429 00, WP 0430 00,
WP 0431 00, WP 0432 00, WP 0433 00, WP 0434 00,
WP 0435 00, WP 0437 00, WP 0438 00,
WP 0439 00,WP 0446 00 or WP 0447 00).
2. Verify no faults found.
DY
1. Remove heater control box (WP 0431 00).
2. Measure resistance between lead ends from circuit breaker
terminal 17 (1) and RUN-OFF-START switch terminal 15 (2).
3. Does multimeter read 0 ohms?
YES
NO
DYN
1. Repair faulty lead (WP 0294 00).
2. Verify no faults found.
2DY
1. Measure resistance between lead ends from RUN-OFF-START
switch terminals 21 (1) and 14 (2).
2. Does multimeter read 0 ohms?
YES
NO
2DYN
1. Repair heater switch jumper lead
between terminal 21 and 14
(WP 0294 00).
2. Verify no faults found.
0085 00-6
