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
4. Using digital multimeter
A/C Does Not Blow Cold
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
When Maximum Cool
Proceed to Test Step 19.
between connector CL-C5
Setting Is Selected
Resistance Greater Than 5.0 Ohms
terminal 1 (WP 0012, Figure 47)
Continued
Proceed to Test Step 22.
and ground.
Test Step 19. Test Engine Interface
Wiring Harness for High Resistance
or Open.
1. Disconnect connector CL-C8
(WP 0012, Figure 53) from A/C
compressor (WP 0012, Figure 52).
2. Disconnect connector CL-C6
(WP 0012, Figure 49) from A/C
inlet pressure switch connector
(WP 0012, Figure 48).
3. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to step 4.
between connector CL-C5
Resistance Greater Than 5.0 Ohms
terminal 2 (WP 0012, Figure 47)
Replace engine interface wiring
and connector CL-C6 terminal 1
harness (WP 0211).
(WP 0012, Figure 49).
Proceed to Test Step 29.
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to step 5.
between connector CL-C6
Resistance Greater Than 5.0 Ohms
terminal 2 (WP 0012, Figure 49)
Replace engine interface wiring
and connector CL-C7 terminal 1
harness (WP 0211).
(WP 0012, Figure 51).
Proceed to Test Step 29.
5. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 20.
between connector CL-C8
Resistance Greater Than 5.0 Ohms
terminal 1 (WP 0012, Figure 53)
Replace engine interface wiring
and connector CL-C7 terminal 3
harness (WP 0211).
(WP 0012, Figure 51).
Proceed to Test Step 29.
Test Step 20. Test for Open A/C
Pressure Switch.
NOTE
Low side system pressure must be at least 17 psi (118 kPa) for inlet
pressure switch to close. High side system pressure must be between 40
and 254 psi (275 and 1750 kPa) for outlet pressure switch to close.
1. Using digital multimeter
Resistance 1.0 Ohm or Less
(WP 0540), measure resistance
Proceed to step 2.
between A/C outlet pressure
Resistance Greater Than 1.0 Ohm
switch connector terminal 1 and
Replace A/C outlet pressure switch
terminal 2 (WP 0012, Figure 46).
(WP 0215).
Proceed to Test Step 29.
0133-10
