TM 5-3805-293-23-2
0022
Table 1. Cab Heating, Air Conditioning, and 12 Volt Power Inverter Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Refrigerant Compressor
16. Using digital multimeter, test for
Resistance 5.0 Ohms or Less -
Will Not Engage - Con-
continuity between harness con-
Remove jumper wire from harness
tinued
nector AW-C1 (WP 0009, Figure
connector FA-C8 (WP 0009, Figure
263) terminal 5 and harness con-
396) terminal 1 and terminal 4.
nector AW-C2 (WP 0009, Figure
Connect harness connector FA-C8
261) terminal 2.
(WP 0009, Figure 396) to A/C clutch
Resistance should be less than
relay (WP 0009, Figure 395) (WP
5.0 ohms.
0189).
Proceed to Test Step 5.
Resistance More Than 5.0 Ohms -
Replace rear air conditioning wiring
harness (WP 0185).
Remove jumper wire from harness
connector FA-C8 (WP 0009, Figure
396) terminal 1 and terminal 4.
Connect harness connector FA-C8
(WP 0009, Figure 396) to A/C clutch
relay (WP 0009, Figure 395) (WP
0189).
Connect rear air conditioning wiring
harness connector AW-C1 (WP 0009,
Figure 263) to rear chassis wiring har-
ness connector FA-C32 (WP 0009,
Figure 262) (WP 0185).
Connect harness connector AW-C2
(WP 0009, Figure 261) to A/C com-
pressor clutch solenoid (WP 0009,
Figure 260) (WP 0185).
Connect rear air conditioning wiring
harness connector AW-C3 (WP 0009,
Figure 265) to refrigerant compressor
arc suppressor (WP 0009, Figure
264) (WP 0098).
Connect rear air conditioning wiring
harness connector AW-C9 (WP 0009,
Figure 267) to refrigerant compressor
low pressure switch (WP 0009, Figure
266) (WP 0097).
Proceed to step 17.
17. Using refrigerant reclaimer, per-
form A/C Performance Test (WP
0045).
0022-30