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
9. Using digital multimeter, test for
Resistance 5.0 Ohms or Less -
Will Not Engage - Con-
continuity between harness con-
Replace rear chassis wiring harness
tinued
nector P-C3 (WP 0009, Figure 34)
(WP 0188).
terminal 27 and harness connec-
Connect harness connector AW-C9
tor P-C70 (WP 0009, Figure 16)
(WP 0009, Figure 267) from refriger-
terminal 10.
ant low pressure switch (WP 0009,
Resistance should be less than 5.0
Figure 266) (WP 0097).
ohms.
Connect harness connector FA-C8
(WP 0009, Figure 396) to A/C clutch
relay (WP 0009, Figure 395) (WP
0189).
Connect upper cab wiring harness
connector R-C48 (WP 0009, Figure
384) to A/C On switch (WP 0009, Fig-
ure 383) (WP 0293).
Connect cab upper harness connector
R-C1 (WP 0009, Figure 33) to cab
lower harness connector P-C3 (WP
0009, Figure 34) (WP 0265).
Proceed to step 10.
Resistance More Than 5.0 Ohms -
Replace cab lower wiring harness
(WP 0266).
Connect harness connector AW-C9
(WP 0009, Figure 267) from refriger-
ant low pressure switch (WP 0009,
Figure 266) (WP 0097).
Connect harness connector FA-C8
(WP 0009, Figure 396) to A/C clutch
relay (WP 0009, Figure 395) (WP
0189).
Connect rear chassis wiring harness
connector FA-C20 (WP 0009, Figure
113) to transmission ECM J1 (WP
0009, Figure 112) (WP 0137).
Connect upper cab wiring harness
connector R-C48 (WP 0009, Figure
384) to A/C On switch (WP 0009, Fig-
ure 383) (WP 0293).
Proceed to step 10.
10. Using refrigerant reclaimer, per-
form A/C Performance Test (WP
0045).
0022-44
