Nissan Primera P12. Instruction — part 25
TROUBLE DIAGNOSIS
ATC-93
C
D
E
F
G
H
I
K
L
M
A
B
ATC
High-pressure Side is Too Low and Low-pressure Side is Too High.
Both High- and Low-pressure Sides are Too Low.
Gauge indication
Refrigerant cycle
Probable cause
Corrective action
High-pressure side is too low and
low-pressure side is too high.
High and low-pressure sides
become equal soon after com-
pressor operation stops.
Compressor pressure opera-
tion is improper.
↓
Damaged inside compressor
packings
Replace compressor.
No temperature difference
between high and low-pres-
sure sides
Compressor pressure opera-
tion is improper.
↓
Damaged inside compressor
packings.
Replace compressor.
AC356A
Gauge indication
Refrigerant cycle
Probable cause
Corrective action
Both high- and low-pressure sides
are too low.
●
There is a big temperature
difference between receiver
drier outlet and inlet. Outlet
temperature is extremely
low.
●
Liquid tank inlet and expan-
sion valve are frosted.
Liquid tank inside is slightly
clogged.
●
Replace liquid tank.
●
Check lubricant for contami-
nation.
●
Temperature of expansion
valve inlet is extremely low
as compared with areas
near liquid tank.
●
Expansion valve inlet may
be frosted.
●
Temperature difference
occurs somewhere in high-
pressure side
High-pressure pipe located
between receiver drier and
expansion valve is clogged.
●
Check and repair malfunc-
tioning parts.
●
Check lubricant for contami-
nation.
Expansion valve and liquid
tank are warm or only cool
when touched.
Low refrigerant charge
↓
Leaking fittings or components
Refer to
.
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.
Expansion valve closes a little
compared with the specifica-
tion.
↓
1. Improper expansion valve
adjustment
2. Malfunctioning thermal
valve
3. Outlet and inlet may be
clogged.
●
Remove foreign particles by
using compressed air.
●
Check lubricant for contami-
nation.
An area of the low-pressure
pipe is colder than areas near
the evaporator outlet.
Low-pressure pipe is clogged
or crushed.
●
Check and repair malfunc-
tioning parts.
●
Check lubricant for contami-
nation.
Air flow volume is not enough
or is too low.
Evaporator is frozen.
●
Check intake sensor circuit.
Refer to
●
Replace compressor.
AC353A
ATC-94
TROUBLE DIAGNOSIS
Low-pressure Side Sometimes Becomes Negative.
Low-pressure Side Becomes Negative.
Gauge indication
Refrigerant cycle
Probable cause
Corrective action
Low-pressure side sometimes
becomes negative.
●
Air conditioning system
does not function and does
not cyclically cool the com-
partment air.
●
The system constantly func-
tions for a certain period of
time after compressor is
stopped and restarted.
Refrigerant does not dis-
charge cyclically.
↓
Moisture is frozen at expan-
sion valve outlet and inlet.
↓
Water is mixed with refriger-
ant.
●
Drain water from refrigerant
or replace refrigerant.
●
Replace liquid tank.
AC354A
Gauge indication
Refrigerant cycle
Probable cause
Corrective action
Low-pressure side becomes nega-
tive.
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.
●
If water is the cause, initially
cooling is okay. Then the
water freezes causing a
blockage. Drain water from
refrigerant or replace refrig-
erant.
●
If due to foreign particles,
remove expansion valve
and remove the particles
with dry and compressed air
(not shop air).
●
If either of the above meth-
ods cannot correct the prob-
lem, replace expansion
valve.
●
Replace liquid tank.
●
Check lubricant for contami-
nation.
AC362A
TROUBLE DIAGNOSIS
ATC-95
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Insufficient Heating
EJS002Y5
SYMPTOM: Insufficient heating
INSPECTION FLOW
*1
*2
ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No.1.
*3
ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No.5.
*4
ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No.7.
*5
ATC-67, "Air Mix Door Motor Circuit"
*6
ATC-49, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No.14.
*7
*8
ATC-73, "Blower Motor Circuit"
*9
ATC-67, "Air Mix Door Motor Circuit"
*10 YD engine:
F9Q engine: EC-F9Q-17
*11
YD engine:
F9Q engine:
*12 YD engine:
F9Q engine:
*13 YD engine:
F9Q engine:
RJIA0805E
ATC-96
TROUBLE DIAGNOSIS
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