Nissan Silvia. Instruction — part 273
Insufficient Cooling
TROUBLE DIAGNOSIS PROCEDURE FOR INSUFFICIENT COOLING
=NMHA0150
Symptom:
I
Insufficient Cooling.
Inspection Flow
ZHA018H
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Insufficient Cooling
HA-43
PERFORMANCE TEST DIAGNOSES
NMHA0082
SHA419F
*3: HA-47
*4: HA-52
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-44
SHA334FB
*7: HA-84
*8: HA-36
*9: EM-16
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-45
PERFORMANCE TEST
=NMHA0083
Test Condition
NMHA0083S01
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
Discharge Air
Face Vent
REC switch
(Recirculation) set
FAN speed
High speed
Engine speed
Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Test Reading
NMHA0083S02
Recirculating-to-discharge Air Temperature Table
NMHA0083S0201
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)
4.4 - 5.8 (40 - 42)
20 (68)
8.0 - 10.0 (46 - 50)
25 (77)
12.0 - 14.5 (54 - 58)
30 (86)
16.0 - 19.0 (61 - 66)
60 - 70
15 (59)
5.8 - 7.8 (42 - 46)
20 (68)
10.0 - 12.0 (50 - 54)
25 (77)
14.5 - 17.0 (58 - 63)
30 (86)
19.0 - 22.4 (66 - 72)
Ambient Air Temperature-to-operating Pressure Table
NMHA0083S0202
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
25 (77)
1,059 - 1,285
(10.8 - 13.1, 154 - 186)
186 - 235
(1.9 - 2.4, 27 - 34)
30 (86)
1,206 - 1,471
(12.3 - 15.0, 175 - 213)
216 - 275
(2.2 - 2.8, 31 - 40)
35 (95)
1,363 - 1,667
(13.9 - 17.0, 198 - 242)
235 - 304
(2.4 - 3.1, 34 - 44)
40 (104)
1,520 - 1,854
(15.5 - 18.9, 220 - 269)
294 - 363
(3.0 - 3.7, 43 - 53)
TROUBLE DIAGNOSES
Insufficient Cooling (Cont’d)
HA-46
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