TM 5-3805-296-23-2
0132
Table 1. Heater Does Not Operate Properly Continued.
0132
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Heater Does Not Operate
4. Using digital multimeter
Resistance 5.0 Ohms or Less
Properly Continued
(WP 0540), measure resistance
Replace temperature select switch
between connector W-C2
(WP 0468).
terminal 21 and terminal 22
Proceed to Test Step 14.
(WP 0012, Figure 224).
Resistance Greater Than 5.0 Ohms
Replace main cab wiring harness
(WP 0505).
Proceed to Test Step 14.
Test Step 12. Test Headliner Wiring
Harness for High Resistance or
Open.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Connect jumper wire between
terminal A and terminal C
of connector H-C6
(WP 0012, Figure 240)
3. Disconnect connector W-C2
(WP 0012, Figure 224)
from connector H-C7
(WP 0012, Figure 225).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 13.
between connector H-C7
Resistance Greater Than 5.0 Ohms
terminal 21 and terminal 23
Replace headliner wiring harness
(WP 0012, Figure 225).
(WP 0497).
Proceed to Test Step 14.
Test Step 13. Test Main Cab Wiring
Harness for High Resistance or
Open.
1. Remove jumper wire from terminal
A and terminal C of connector
H-C6 (WP 0012, Figure 240).
2. Disconnect connector W-C22
(WP 0012, Figure 271)
from connector CA-C1
(WP 0012, Figure 272).
3. Connect jumper wire between
terminal 8 and terminal 9
of connector W-C22
(WP 0012, Figure 271).
0132-10