TM 9-2350-247-20-1
ENGINE CRANKS BUT WILL NOT S TART BELOW 4 0
F (AIR BOX HEATER IS
USED)Continued
0015 00
3DY
1. Remove air box heater switch (WP 0184 00 or WP 0185 00).
2. Remove circuits 406 (1) and 400B (2) plugs from air box heater
switch jacks (3) and (4).
3. Measure resistance between switch jacks (3) and (4) with air box
heater ON.
4. Does multimeter read 0 ohms?
YES
NO
3DYN
1. Replace air box heater switch
(WP 0184 00 or WP 0185 00).
2. Verify no faults found.
4DY
1. Remove circuit 27 plug (1) from instrument panel circuit
breaker (2).
2. Measure resistance between instrument panel wiring harness
circuit 27 (1) and 400B (3) plug pins.
3. Does multimeter read 0 ohms?
YES
NO
4DYN
1. Repair instrument panel wiring
harness circuit 400B/27
(WP 0294 00).
2. Verify no faults found.
0015 00-10