Volkswagen Golf 1999 Service Manual page 3926

A/C refrigerant system, troubleshooting
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...
Test 3: A/C system low pressure, checking
- Connect high- and low-pressure hoses of
refrigerant recovery/recycling/recharging unit
4
Kent-Moore ACR
low-pressure service valves.
- Start engine.
- Set temperature control to maximum "cold" (if
manual A/C) or "LO" (if Climatronic).
- Manual A/C: Press "A/C" button and select first
blower speed.
- Climatronic: Select minimum blower speed
(manual override)) by pressing "decrease blower
speed" button (observe blower speed display in
control head).
- Adjust air distribution to instrument panel
outlets.
- Raise engine speed to 1500 RPM.
Specified result
System low pressure is normal if low-pressure
gauge reads 22-36 psi (1.5-2.5 bar) within 30
seconds.
If specified reading is not obtained, compare
results of all three tests
137 .
Página 6 de 10
, or equivalent, to high- and
table, Page 87-
87-136
13/2/2005