TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 2. Electrical System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. Arctic Heater is Inoperative 9. Check arctic heater fuel pump ground 1. If continuity is present, go to Test 10.
circuit.
2. If continuity is not present, there is an
- Continued.
(a) Disconnect wiring harness from
open arctic heater fuel pump ground
arctic heater fuel pump (WP 0141
circuit. Replace wiring harness in
00).
question (WP 0141 00 or WP 0169 00
(b) Battery disconnect switch remains
thru WP 0175 00).
in ON position (TM 5-3805-290-
10).
(c) Check continuity between arctic
heater fuel pump wiring harness
pin B, circuit 200 (BK), and
ground.
10. Check arctic heater fuel pump power
1. If continuity is present, replace arctic
circuit.
heater fuel pump. If problem still
(a) Wiring harness remains
exists, replace arctic heater pump and
disconnected from arctic heater
motor assembly (WP 0141 00).
and arctic heater fuel pump (WP
2. If continuity is not present, there is an
0141 00).
open circuit between arctic heater fuel
(b) Turn battery disconnect switch
pump and arctic heater. Replace wiring
and engine start switch to OFF
harness in question (WP 0141 00 or WP
position (TM 5-3805-290-10).
0169 00 thru WP 0175 00).
(c) Check continuity between arctic
heater fuel pump wiring harness
pin A, circuit 323 (WH) and arctic
heater wiring harness pin C4,
circuit 323 (WH).
N OT E
19. Air Conditioning
Compressor Does Not Run
If AC compressor and condenser fan run at all, problem is most likely
(Blower Operates
NOT electrical.
Correctly).
1. Check AC fuse (TM 5-3805-290-10).
1. If fuse is open, replace it.
2. If fuse is OK, go to Test 2.
2. Verify condenser fan runs.
1. If condenser fan does not operate, refer
to Malfunction 21, Condenser Fan is
Inoperative in this work package.
2. If condenser fan operates correctly, go
to Test 3.
3. Check AC system charge (WP 0191
1. If AC system charge is low, find and
00).
repair system leak.
2. If AC system charge is OK, go to Test
4.
