TM 5-3805-296-23-2
0133
Table 1. A/C Does Not Blow Cold When Maximum Cool Setting Is Selected Continued.
0133
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 16. Test Main Cab Wiring
A/C Does Not Blow Cold
Harness for High Resistance or
When Maximum Cool
Open.
Setting Is Selected
1. Disconnect connector H-C7
Continued
(WP 0012, Figure 225) from
connector W-C2
(WP 0012, Figure 224).
2. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Replace headliner wiring harness
between connector W-C16
(WP 0497).
terminal 23 (WP 0012, Figure 87)
Proceed to Test Step 29.
and connector W-C2 terminal 17
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 224).
Replace main cab wiring harness
(WP 0505).
Proceed to Test Step 29.
Test Step 17. Test Headliner Wiring
Harness for High Resistance or
Open.
1. Turn fan speed switch to
position O (TM 5-3805-296-10).
2. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
3. Disconnect connector H-C3
(WP 0012, Figure 250) from fan
speed switch connector
(WP 0012, Figure 249).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Replace fan speed switch (WP 0467).
between connector H-C15
Proceed to Test Step 29.
terminal 2 (WP 0012, Figure 248)
Resistance Greater Than 5.0 Ohms
and connector H-C3 terminal 2
Replace headliner wiring harness
(WP 0012, Figure 250).
(WP 0497).
Proceed to Test Step 29.
Test Step 18. Test Input Circuit
Function to A/C Outlet Pressure
Switch.
1. Turn fan speed switch to
position O (TM 5-3805-296-10).
2. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
3. Disconnect connector CL-C5
(WP 0012, Figure 47) from A/C
outlet pressure switch connector
(WP 0012, Figure 46).
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