Infiniti G20 (P11). Manual - part 439
Low-pressure Side Becomes Negative.
NCHA0032S06
Gauge indication
Refrigerant cycle
Probable cause
Corrective action
Low-pressure side becomes nega-
tive.
AC362A
Liquid tank or front/rear side
of expansion valve’s pipe is
frosted or dewed.
High-pressure side is closed
and refrigerant does not flow.
"
Expansion valve or liquid
tank is frosted.
Leave the system at rest
until no frost is present. Start
it again to check whether or
not the problem is caused by
water or foreign particles.
I
If water is the cause, ini-
tially cooling is okay. Then
the water freezes causing
a blockage. Drain water
from refrigerant or replace
refrigerant.
I
If due to foreign particles,
remove expansion valve
and remove the particles
with dry and compressed
air (not shop air).
I
If either of the above
methods cannot correct
the problem, replace
expansion valve.
I
Replace liquid tank.
I
Check lubricant for con-
tamination.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
AUTO
Insufficient Cooling (Cont’d)
HA-87