Suzuki XL7 2007 Service Manual page 1882

7A-68 Heating, Ventilation and Air Conditioning:
Fluorescent Dye Injection
NOTE
• J 41447 can be poured directly into a
removed A/C component.
• J 46297-12 is injected into the low side port
using J 46297.
• Not all of the fluorescent dyes are compatible with
PAG oil. Some types of dye decrease the oil viscosity
or may chemically react with the oil.
• R-134A leak detection dye requires time to work.
Depending upon the leak rate, a leak may not become
visible for between 15 minutes and 7 days.
NOTE
Do NOT overcharge the A/C system with dye.
Use only one 7.39 ml (0.25 oz) charge.
• To prevent false diagnosis, thoroughly clean any
residual dye from the service port with a rag and the
approved fluorescent dye cleaner J 43872.
Air Conditioning (A/C) System Performance Test (w/ C69)
This test measures the operating efficiency of the A/C system under the following conditions:
• The current ambient air temperature
• The current relative humidity
• The high side pressure of the A/C system
• The low side pressure of the A/C system
• The temperature of the air being discharged into the passenger compartment
Test Description
The numbers below refer to the step numbers on the diagnostic table.
1.
This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system
without damage.
2.
This step measures the performance of the A/C system.
3.
This step is to allow for vehicle variations as well as high ambient temperatures.
Step
NOTE
• The ambient air temperature must be at least 16°C (60°F).
• Do not induce additional air flow across the front of the vehicle during the test.
• If you were sent here from a DTC diagnostic table, clear the DTC upon completion of this test.
Action
Halogen Leak Detector
WARNING
!
Do not operate the detector in a combustible
atmosphere since its sensor operates at high
temperatures or personal injury and/or
damage to the equipment may result.
Ensure that the vehicle has at least 0.45 kg (1 lb) of
refrigerant in the A/C refrigeration system in order to
perform a leak test. Refer to "Refrigerant Recovery and
Recharging" for recharging the A/C system.
NOTE
Halogen leak detectors are sensitive to the
following items:
• Windshield washing solutions
• Many solvents and cleaners
• Some adhesives used in the vehicle
Clean and dry all surfaces in order to prevent a false
warning. Liquids will damage the detector.
NOTE
Follow a continuous path in order to ensure
that you will not miss any possible leaks.
Test all areas of the system for leaks.
Follow the instructions supplied with the J 39400-A.
Values Yes No