Suzuki XL7 2007 Service Manual page 1892

7A-78 Heating, Ventilation and Air Conditioning:
Air Conditioning (A/C) Diagnostics - Pressure Zone B
Step
DEFINITION: The low side pressure is higher than normal and the high side pressure is lower than normal.
• Malfunctioning Air Conditioning (A/C) Compressor
• Refrigerant Under Charge
Were you sent here from the air conditioning (A/C) System
Performance Test?
1
After continued operation of the A/C system, do the low and
2
the high side pressures equalize or become static?
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 equal to or greater than the
specified pressure range of the A/C Performance Table.
Refer to "Air Conditioning (A/C) System Performance
3 Test (w/ 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
cool to warm.
– The high side refrigerant line at the compressor feels
warm to hot.
Do the listed conditions exist?
Action Yes
Go to "Air
Conditioning (A/C)
System Performance
Go to Step 2 Test (w/ C69)" "Air
Conditioning (A/C)
System Performance
Test (w/o C69)"
Go to Step 5 Go to Step 3
Go to Step 5 Go to Step 4
No