5 Series E34 525td (M51) TOUR
64 50 ...
Troubleshooting by pressure measurement
(R 134a)
Note:
The troubleshooting by pressure measurement described in the
following is only possible on A/C systems with uncontrolled
compressors.
This includes among others:
•
E53
•
E46M47 up to 09/2001
•
E38 up to 09/1997
•
E36, E36/7
•
E34
•
E32
•
E31
Connect service station to car and open both valves on the
charging hoses. Adjust A/C system at control panel as described
for A/C efficiency measurement.
Note:
The following values apply as normal pressure ranges for ambient
temperatures between + 20
°
C and + 40
°
C:
•
Inlet pressure: 1.0 - 2.2 bar
•
Outlet pressure: 12 - 22 bar
Normal inlet pressure and high outlet pressure indicate an
overfilled system, a contaminated condenser or a faulty auxiliary
fan.
Remedy:
Draw off, evacuate and refill A/C system. Clean condenser from
outside, check auxiliary fan, replace if necessary.
RA Troubleshooting by pressure measurement (R 134a)
BMW AG - TIS
23.01.2013 08:19
Issue status (12/2007) Valid only until next DVD is issued
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