Infiniti I35 (A33). Manual — part 542
Insufficient Cooling
TROUBLE DIAGNOSIS PROCEDURE FOR INSUFFICIENT COOLING
=NHHA0205
SYMPTOM:
I
Insufficient cooling
INSPECTION FLOW
SHA927F
*1: HA-36
*2: HA-62
*3: HA-84
*4: HA-45
*5: FUNCTION CONFIRMATION
PROCEDURE (HA-37), see No.
13.
*6: HA-55
*7: HA-68
*8: HA-76
*9: HA-82
*10: HA-47
*11: HA-37
*12: HA-2
*13: MA-13
*14: EC-517
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Insufficient Cooling
HA-81
PERFORMANCE TEST DIAGNOSES
NHHA0206
SHA344FB
*3: HA-85
*4: HA-61
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-82
SHA329F
*1: HA-112
*2: HA-66
*3: MA-13
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-83
PERFORMANCE TEST
NHHA0207
Test Condition
NHHA0207S01
Testing must be performed as follows:
Vehicle location
Indoors or in the shade (in a well-ventilated place)
Doors
Closed
Door windows
Open
Hood
Open
TEMP.
Max. COLD
Mode switch
(Ventilation) set
REC switch
(Recirculation) set
(blower) speed
Max. speed set
Engine speed
Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Test Reading
NHHA0207S02
Recirculating-to-discharge Air Temperature Table
NHHA0207S0201
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°C (°F)
Relative humidity
%
Air temperature
°C (°F)
50 - 60
15 (59)
3.5 - 5.4 (38 - 42)
20 (68)
6.6 - 8.9 (44 - 48)
25 (77)
9.5 - 12.6 (49 - 55)
30 (86)
13.4 - 16.5 (56 - 62)
35 (95)
17.6 - 21.3 (64 - 70)
60 - 70
15 (59)
5.4 - 7.1 (42 - 45)
20 (68)
8.9 - 11.0 (48 - 52)
25 (77)
12.6 - 15.4 (55 - 60)
30 (86)
16.5 - 20.0 (62 - 68)
35 (95)
21.3 - 24.8 (70 - 77)
Ambient Air Temperature-to-operating Pressure Table
NHHA0207S0202
Ambient air
High-pressure (Discharge side)
kPa (kg/cm
2
, psi)
Low-pressure (Suction side)
kPa (kg/cm
2
, psi)
Relative humidity
%
Air temperature
°C (°F)
50 - 70
15 (59)
539 - 657
(5.5 - 6.7, 78 - 95)
177 - 216
(1.8 - 2.2, 26 - 31)
20 (68)
677 - 824
(6.9 - 8.4, 98 - 119)
167 - 206
(1.7 - 2.1, 24 - 30)
25 (77)
843 - 1,030
(8.6 - 10.5, 122 - 149)
177 - 226
(1.8 - 2.3, 26 - 33)
30 (86)
1,030 - 1,275
(10.5 - 13.0, 149 - 185)
216 - 255
(2.2 - 2.6, 31 - 37)
35 (95)
1,245 - 1,520
(12.7 - 15.5, 181 - 220)
265 - 324
(2.7 - 3.3, 38 - 47)
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-84
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