Nissan Murano. Manual — part 820
HAC-54
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 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-55
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
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B2630, B2631 SUNLOAD SENSOR
Description
INFOID:0000000009722069
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:0000000009722070
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
.
• 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
HAC-56
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
B2630, B2631 SUNLOAD SENSOR
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
.
• 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).
Is DTC No.“B2630” or “B2631” displayed?
YES
>> Perform trouble diagnosis for the sunload sensor. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009722071
1.
CHECK VOLTAGE BETWEEN SUNLOAD SENSOR AND GROUND
1.
Disconnect sunload sensor connector.
2.
Turn ignition switch ON.
3.
Check voltage between sunload sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between sunload 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 SUNLOAD SENSOR
1.
Reconnect sunload sensor connector and A/C auto amp. connector.
2.
Check sunload sensor. Refer to
HAC-57, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace A/C auto amp.
NO
>> Replace sunload sensor.
4.
CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.
(+)
(
−
)
Voltage
Sunload sensor
—
Connector
Terminal
M74
1
Ground
Approx. 5 V
Sunload sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M74
2
M50
37
Existed
B2630, B2631 SUNLOAD SENSOR
HAC-57
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
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4.
Check continuity between sunload sensor harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000009722072
1.
CHECK SUNLOAD SENSOR
1.
Turn ignition switch ON.
2.
Check voltage between A/C auto amp. harness connector and ground.
NOTE:
Select a place where sunshine directly on it when checking sunload sensor.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace sunload sensor.
Sunload sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M74
1
M50
15
Existed
Sunload sensor
—
Continuity
Connector
Terminal
M74
1
Ground
Not existed
(+)
(
−
)
A/C auto amp.
—
Connector
Terminal
M50
15
Ground
SHA930E
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