Nissan Murano. Instruction — part 851
HAC-178
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
B2581, B2582 INTAKE SENSOR
B2581, B2582 INTAKE SENSOR
Description
INFOID:0000000009722170
Intake Sensor
• The intake sensor (1) is located on the evaporator (2).
• It converts air temperature after it passes through the evaporator
into a resistance value which is then input to the A/C auto amp.
Intake Sensor Circuit
DTC Logic
INFOID:0000000009722171
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT
1.
Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2.
Check if any DTC No. is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
Is DTC No.“B2581” or “B2582” displayed?
YES
>> Perform trouble diagnosis for the intake sensor. Refer to
HAC-178, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009722172
1.
CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
JPIIA1351ZZ
JPIIA0614GB
DTC
Items
(CONSULT screen terms)
Diagnostic item is detected when...
Possible cause
B2581
INTAKE SENSOR
Detected temperature at intake sensor
−
33
°
C (
−
27
°
F) or less
• Intake sensor
• A/C auto amp.
• Harness and connector
(Intake sensor circuit is open, or there is a
short in the circuit)
B2582
Detected temperature at intake sensor
69
°
C (156
°
F) or more
B2581, B2582 INTAKE SENSOR
HAC-179
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
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HAC
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1.
Disconnect intake sensor connector.
2.
Turn ignition switch ON.
3.
Check voltage between intake sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between intake sensor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INTAKE SENSOR
Check intake sensor. Refer to
HAC-179, "Component Inspection"
Is the inspection result normal?
YES
>> Replace A/C auto amp.
NO
>> Replace intake sensor.
4.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between intake sensor harness connector and A/C auto amp. harness connector.
4.
Check continuity between intake sensor harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000009722173
1.
CHECK INTAKE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect intake sensor connector.
3.
Check resistance between intake sensor terminals.
(+)
(
−
)
Voltage
Intake sensor
—
Connector
Terminal
M42
1
Ground
Approx. 5 V
Intake sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M42
2
M50
37
Existed
Intake sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M42
1
M50
16
Existed
Intake sensor
—
Continuity
Connector
Terminal
M42
1
Ground
Not existed
HAC-180
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
B2581, B2582 INTAKE SENSOR
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace intake sensor.
Terminal
Condition
Resistance k
Ω
Temperature
°
C (
°
F)
1
2
−
15 (5)
18.63
−
10 (14)
14.15
−
5 (23)
10.86
0 (32)
8.41
5 (41)
6.58
10 (50)
5.19
15 (59)
4.12
20 (68)
3.30
25 (77)
2.67
30 (86)
2.17
35 (95)
1.78
40 (104)
1.46
45 (113)
1.21
B2630, B2631 SUNLOAD SENSOR
HAC-181
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
D
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F
G
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M
A
B
HAC
N
O
P
B2630, B2631 SUNLOAD SENSOR
Description
INFOID:0000000009722174
COMPONENT DESCRIPTION
Sunload Sensor
• The sunload sensor (1) is located on the driver’s side instrument
panel & pad.
• It detects sunload entering through windshield by means of a
photo diode. The sensor converts the sunload into a current value
which is then input into the A/C auto amp.
Sunload Sensor Circuit
SUNLOAD INPUT PROCESS
The A/C auto amp. also equips a processing circuit which averages the variations in detected sunload over a
period of time. This prevents drastic swings in the air temperature control system operation due to small or
quick variations in detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sunload sensor varies whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the air temperature control system operation. On the
other hand, shortly after entering a long tunnel, the system recognizes the change in sunload, and the system
reacts accordingly.
DTC Logic
INFOID:0000000009722175
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
or
.
• Sunload sensor may register a malfunction when indoors, at dusk, or at other times when light is insufficient.
When performing the diagnosis indoors, light the sunload sensor with a lamp (60W or more).
JPIIA0559ZZ
JPIIA0615GB
DTC
Items
(CONSULT screen terms)
Diagnostic item is detected when...
Possible cause
B2630
SUNLOAD SENSOR
Detected calorie at sunload sensor 64.7 w/m
2
(56 kcal/m
2
·h) or less
• Sunload sensor
• A/C auto amp.
• Harness and connector
(Sunload sensor circuit is open, or
there is a short in the circuit)
B2631
Detected calorie at sunload sensor 2832 w/m
2
(2436 kcal/m
2
·h) or more
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