TM 9-2350-277-20-1
ENGINE CRANKS BUT WON’T START BELOW 40
(AIR BOX HEATER IS
USED)—Continued
0022 00
B4Y
1. Install solenoid to air box heater fuel line, if removed.
2. Install hose on air pump elbow, if removed.
3. Install bracket, screw, and washer on air pump, if removed.
4. Install air box heater harness plug on ignition coil, if removed.
5. Remove harness 12349873 plug (1) from air box heater harness
jack (2).
6. Turn MASTER SWITCH to ON.
7. Measure voltage between harness 12349873 plug (1) pin A (3) to
ground and pin B (4) to ground with air box heater switch
depressed.
8. Does multimeter read less than 17 volts either time?
YES
NO
B4YN
1. Turn MASTER SWITCH to OFF.
2. Replace air box heater wiring
harness (WP 0205 00).
3. Verify no faults found.
B5Y
1. Remove harness 12349873 plug (1) from harness 12349881 jack
(2) at carrier bulkhead.
2. Measure voltage between harness 12349881 jack (2) pin C (3)
and ground with air box heater switch depressed.
3. Does multimeter read less than 17 volts?
YES
NO
B5YN
1. Turn MASTER SWITCH to OFF.
2. Replace harness 12349873
(WP 0359 00).
3. Verify no faults found.
0022 00-7
