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
3. Blower Motor Does Not
Test Step 3. Test Climate Control
Turn On In One or More
Panel and Low Speed Fan Circuit.
Speeds - Continued
1. Turn ignition switch and battery
disconnect to the OFF position
(TM 5-3805-293-10).
2. Disconnect cab upper wiring har-
ness connector R-C22 (WP 0009,
Figure 386) from climate control
panel (WP 0009, Figure 385) (WP
0293).
3. Disconnect cab lower wiring har-
ness connector P-C3 (WP 0009,
Figure 34) from cab upper wiring
harness connector R-C1 (WP
0009, Figure 33) (WP 0266).
4. Using digital multimeter, test for
Resistance 5.0 Ohms or Less - Pro-
continuity between harness con-
ceed to step 5.
nector R-C22 (WP 0009, Figure
Resistance More Than 5.0 Ohms -
386) terminal 5 and harness con-
Replace cab upper wiring harness
nector R-C1 (WP 0009, Figure
(WP 0265).
33) terminal 21.
Proceed to step 15.
Resistance should be less than
5.0 ohms.
5. Connect cab upper wiring har-
ness connector R-C22 (WP 0009,
Figure 386) to climate control
panel (WP 0009, Figure 385) (WP
0293).
6. Disconnect harness connector P-
C16 (WP 0009, Figure 273) from
harness connector CM-C1 (WP
0009, Figure 272) (WP 0266).
7. Using digital multimeter, test for
Resistance 5.0 Ohms or Less - Pro-
continuity between harness con-
ceed to step 8.
nector P-C3 (WP 0009, Figure 34)
Resistance More Than 5.0 Ohms -
terminal 21 and harness connec-
Replace cab lower wiring harness
tor P-C16 (WP 0009, Figure 273)
(WP 0266).
terminal 4.
Proceed to step 15.
Resistance should be less than 5.0
ohms.
8. Connect cab upper wiring har-
ness connector R-C1 (WP 0009,
Figure 33) to cab lower wiring har-
ness connector P-C3 (WP 0009,
Figure 34) (WP 0266).
0022-18
