Nissan Tiida C11. Instruction — part 909
HAC-300
< SYMPTOM DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
>> GO TO 9.
9.
CHECK REFRIGERANT PURITY
1.
Connect recovery/recycling equipment to vehicle.
2.
Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Check contaminated refrigerant. Refer to
HA-21, "HFC-134a (R-134a) Service Procedure"
10.
CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?
YES
>> Perform performance test diagnoses. Refer to
HAC-300, "Performance Test Diagnoses"
.
NO
>> GO TO 11.
11.
CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to
Is the inspection result normal?
YES
>> Perform performance test diagnoses. Refer to
HAC-300, "Performance Test Diagnoses"
.
NO
>> GO TO 12.
12.
CHECK AIR DUCTS
Check ducts for air leaks.
Is the inspection result normal?
YES
>> System OK.
NO
>> Repair air leaks.
Performance Test Diagnoses
INFOID:0000000001547375
PERFORMANCE TEST DIAGNOSIS
INSUFFICIENT COOLING
HAC-301
< SYMPTOM DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
*1
*2
*3
HAC-303, "Trouble Diagnoses for
Unusual Pressure"
*4
HAC-226, "Air Mix Door Motor Diag-
nosis Procedure"
RJIA1601E
HAC-302
< SYMPTOM DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
Performance Chart
INFOID:0000000001547376
PERFORMANCE CHART
Test Condition
*1
HA-32, "Removal and Installation of
Compressor - MR18DE"
or
"Removal and Installation of Com-
pressor - HR16DE"
moval and Installation of Compressor
- K9K"
*2
HAC-233, "Front Blower Motor Com-
ponent Function Check"
*3
(HR16DE) or
(MR18DE) or
(K9K)
RJIA3107E
INSUFFICIENT COOLING
HAC-303
< SYMPTOM DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Testing must be performed as follows:
Test Reading
INFOID:0000000001547377
TEST READING
Recirculating-to-discharge Air Temperature Table
Ambient Air Temperature-to-operating Pressure Table
*1: In the blower motor low-speed control
*2: In the blower motor high-speed control
Trouble Diagnoses for Unusual Pressure
INFOID:0000000001547378
TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
Vehicle condition
Indoors or in the shade (in a well-ventilated place)
Doors
Closed
Door window
Open
Hood
Open
TEMP.
Max. COLD
Mode control dial
(Ventilation) set
Intake switch
(Recirculation) set
Blower speed
Max. speed set
Engine speed
Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°
C (
°
F)
Relative humidity
%
Air temperature
°
C (
°
F)
50 - 60
20 (68)
7.2 - 9.1 (45 - 48)
25 (77)
11.4 - 13.8 (53 - 57)
30 (86)
15.5 - 18.4 (60 - 65)
35 (95)
20.3 - 23.7 (69 - 75)
60 - 70
20 (68)
9.1 - 10.9 (48 - 52)
25 (77)
13.8 - 16.2 (57 - 61)
30 (86)
18.4 - 21.3 (65 - 70)
35 (95)
23.7 - 27.1 (75 - 81)
Ambient air
High-pressure (Discharge side)
kPa (bar, kg/cm
2
, psi)
Low-pressure (Suction side)
kPa (bar, kg/cm
2
, psi)
Relative humidity
%
Air temperature
°
C (
°
F)
50 - 70
20 (68)
843 - 1,036 *1
(11.08 - 13.63, 8.6 - 10.6, 122 - 150)
159.0 - 194.0
(1.59 - 1.94, 1.62 - 1.98, 23.1 - 28.1)
25 (77)
1,094 - 1,338 *1
(10.94 - 13.38, 11.2 - 13.6, 159 - 194)
196.3 - 240.0
(1.96 - 2.40, 2.00 - 2.45, 28.5 - 34.8)
30 (86)
1,298 - 1,590 *1
(12.98 - 15.90, 13.2 - 16.2, 188 - 231)
248.0 - 302.7
(2.48 - 3.03, 2.53 - 3.09, 36.0 - 43.9)
35 (95)
1,383 - 1,688 *2
(13.83 - 16.88, 14.1 - 17.2, 201 - 245)
308.8 - 377.4
(3.09 - 3.77, 3.15 - 3.85, 44.8 - 54.7)
40 (104)
1,628 - 1,988 *2
(16.28 - 19.88, 16.6 - 20.3, 236 - 288)
377.4 - 461.2
(3.77 - 4.61, 3.85 - 4.70, 54.7 - 66.8)
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