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
Test Step 8. Test Refrigerant Com-
Will Not Engage - Con-
pressor Thermostat Pull Down
tinued
Resistor And Circuits In Rear A/C
Wiring Harness For Continuity
1. Using digital multimeter, test for
Resistance 5.0 Ohms or Less - Pro-
continuity between harness con-
ceed to step 2.
nector FA-C32 (WP 0009, Figure
Resistance More Than 5.0 Ohms -
262) terminal 2 and machine
Verify rear frame ground (WP 0009,
ground.
Figure 133) is clean and tight. If rear
Resistance should be less than 5.0
frame ground is OK, replace rear
ohms.
chassis wiring harness (WP 0188).
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 harness connector AW-C4
(WP 0009, Figure 269) to refrigerant
pressure switch (WP 0009, Figure
268) (WP 0097).
Connect harness connector AW-C9
(WP 0009, Figure 267) from refriger-
ant low pressure switch (WP 0009,
Figure 266) (WP 0097).
Proceed to step 13.
2. Connect rear air conditioning wir-
ing harness connector AW-C1
(WP 0009, Figure 263) to rear
chassis wiring harness connector
FA-C32 (WP 0009, Figure 262)
(WP 0185).
3. Connect rear air conditioning wir-
ing harness connector AW-C3
(WP 0009, Figure 265) to refriger-
ant compressor arc suppressor
(WP 0009, Figure 264) (WP
0098).
4. Connect harness connector AW-
C2 (WP 0009, Figure 261) to A/C
compressor clutch solenoid (WP
0009, Figure 260) (WP 0185).
0022-35