Suzuki XL7 2007 Service Manual page 1893

Step
1. Refer to the pressures recorded during the A/C System
Performance Test.
2. Inspect for the following conditions:
WARNING
!
Refer to "Moving Parts and Hot Surfaces Caution:
".
– The low side pressure is greater than the specified
pressure range of the A/C Performance Table. Refer to
"Air Conditioning (A/C) System Performance Test (w/
4 C69)" "Air Conditioning (A/C) System Performance Test
(w/o C69)".
– The high side pressure is less than the specified
pressure range of the A/C Performance Table. Refer to
"Air Conditioning (A/C) System Performance Test (w/
C69)" "Air Conditioning (A/C) System Performance Test
(w/o C69)".
– The low side refrigerant line at the compressor feels
warm.
– The high side refrigerant line at the compressor feels
warm to hot.
Do the listed conditions exist?
The A/C system has a low refrigerant charge.
Evacuate and recharge the A/C system. Refer to "Refrigerant
5
Recovery and Recharging".
Is the action complete?
1. After you perform the repairs, record the following:
– The low and the high side pressures
– The instrument panel outlet air temperature
2. Compare the pressures and the temperature to those
listed in the A/C Performance Chart. Refer to "Air
6
Conditioning (A/C) System Performance Test (w/ C69)"
"Air Conditioning (A/C) System Performance Test (w/o
C69)".
Are the readings within the specified ranges found on the A/C
Performance Chart?
The A/C compressor is malfunctioning.
Remove the thermal expansion valve (TXV) and inspect for
7 contamination. Refer to "Thermal Expansion Valve
Replacement".
Did you find metal flakes on the TXV?
Inspect the TXV for a brown, powdery residue indicating
8 desiccant in the A/C system.
Is a brown, powdery residue present?
1. Remove the compressor hose from the compressor. Refer
to "Compressor Hose Assembly Replacement".
9
2. Inspect for metal flake contamination at the line
connections and the compressor ports.
Is metal flake contamination present?
Action
Heating, Ventilation and Air Conditioning:
Yes
Go to Step 5
Go to Step 6
Go to Step 13
Go to Step 9
Go to Step 11
Go to Step 10
7A-79
No
Go to "Air
Conditioning (A/C)
System Performance
Test (w/ C69)" "Air
Conditioning (A/C)
System Performance
Test (w/o C69)"
—
Go to Step 7
Go to Step 8
Go to Step 12
Go to Step 12