Fluorescent Dye Leak Detection
General EquipmentUV Leak Detector
1. Refer to: Air Conditioning (A/C) System Health
and Safety Precautions (100-00 General
Information, Description and Operation).
2. NOTE: Some vehicles may have signs of
refrigerant oil at the spring lock couplers. The
cause of this may be a procedure used in
production before installation of the fittings in
order to assist their assembly. When a spring
lock coupler is suspected of leaking, always
wipe the fitting clean and verify the leak with
R-134a Automatic Calibration Halogen Leak
Detector.
NOTE: The exact location of leaks can be
pinpointed by the bright yellow - green glow of
the tracer dye. Since more than one leak can
exist, always inspect each component.
• Locate the leaks. Check all components, fittings and lines of the A/C system for leaks.
General Equipment: UV Leak Detector
3. After the leak is found and rectified, remove any
traces of dye with a general purpose solvent.
4. Check the repair by operating the system for
some minutes and inspecting with the UV lamp
again.
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Climate Control System - General Information
412-00- 15
GENERAL PROCEDURES
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dynamic pressure in blower housing during fast
motorway driving), the current flow through the
blower motor is limited by the blower control
module, until a safe value is reached. If this value
cannot be achieved (e.g. blower motor blocked or
partially seized or dynamic pressure in the blower
housing permanently too high), the value is limited
to6A±2A.
Under normal conditions, the blower motor control
returns to the normal state.
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Climate Control
412-01- 27
DESCRIPTION AND OPERATION
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