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
11. Using digital multimeter
A/C Does Not Blow Cold
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
When Maximum Cool
Replace thermostat (WP 0457).
between connector CA-C1
Setting Is Selected
Proceed to Test Step 29.
terminal 4 (WP 0012, Figure 272)
Continued
Resistance Greater Than 5.0 Ohms
and connector CA-T3
Replace air conditioner wiring harness
(WP 0012, Figure 274).
(WP 0527).
Proceed to Test Step 29.
Test Step 26. Inspect Ground Point
of Main Cab Wiring Harness.
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. Inspect ground point of main cab
Ground Point or Ring Terminal Dirty
wiring harness (WP 0012,
or Corroded Clean as necessary.
Figure 316) for dirt, corrosion, and
Proceed to Test Step 29.
damage.
Ring Terminal Defective Replace
main cab wiring harness (WP 0505).
Proceed to Test Step 29.
No Problem Found Install main cab
wiring harness on ground point
(WP 0505). Proceed to Test Step 27.
Test Step 27. Test Power and Ground
Circuit Function at A/C Protection
Module.
1. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
2. Turn fan speed switch to
position IIII and set heat A/C
switch to A/C position
(TM 5-3805-296-10).
3. Using digital multimeter
Voltage 18 to 28 V Proceed to Test
(WP 0540), test for voltage
Step 29.
between connector CL-C7
Voltage Less Than 18 V Proceed to
terminal 4 and terminal 2
Test Step 28.
(WP 0012, Figure 51).
Test Step 28. Test Engine Interface
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).
0133-16