Nissan Murano Z51. Manual — part 848
B257B, B257C AMBIENT SENSOR
HAC-47
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> Replace A/C auto amp.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000005514605
1.
CHECK AMBIENT SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect ambient sensor connector. Refer to
3.
Check resistance between ambient sensor terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace ambient sensor.
Ambient sensor
—
Continuity
Connector
Terminal
E337
1
Ground
Not existed
Terminal
Condition
Resistance k
Ω
Temperature
°
C (
°
F)
1
2
−
15 (5)
12.73
−
10 (14)
9.92
−
5 (23)
7.80
0 (32)
6.19
5 (41)
4.95
10 (50)
3.99
15 (59)
3.24
20 (68)
2.65
25 (77)
2.19
30 (86)
1.81
35 (95)
1.51
40 (104)
1.27
45 (113)
1.07
HAC-48
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
B2578, B2579 IN-VEHICLE SENSOR
B2578, B2579 IN-VEHICLE SENSOR
Description
INFOID:0000000005514606
In-vehicle Sensor
• The in-vehicle sensor (1) is located on instrument driver lower
panel (2).
• It converts variations in compartment air temperature drawn from
the aspirator into a resistance value. It is then input into the A/C
auto amp.
In-vehicle Sensor Circuit
Aspirator
The aspirator (1) is located on driver side of heater & cooling unit
assembly. It produces vacuum pressure due to air discharged from
the heater & cooling unit assembly, continuously taking compartment
air in the aspirator.
DTC Logic
INFOID:0000000005514607
DTC DETECTION LOGIC
JPIIA0557ZZ
JPIIA0613GB
JPIIA0517ZZ
RJIA1804E
B2578, B2579 IN-VEHICLE SENSOR
HAC-49
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
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-III
1.
Using CONSULT-III, 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.“B2578” or “B2579” displayed?
YES
>> Perform trouble diagnosis for the in-vehicle sensor. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005514608
1.
CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND
1.
Disconnect in-vehicle sensor connector.
2.
Turn ignition switch ON.
3.
Check voltage between in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between in-vehicle 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 IN-VEHICLE SENSOR
Check in-vehicle sensor. Refer to
HAC-50, "Component Inspection"
Is the inspection result normal?
YES
>> Replace A/C auto amp.
DTC
Items
(CONSULT-III screen terms)
Diagnostic item is detected when...
Possible cause
B2578
IN CAR SEN SHORT
Detected temperature at in-vehicle
sensor
−
44
°
C (
−
47
°
F) or less
• In-vehicle sensor
• A/C auto amp.
• Harness and connector
(In-vehicle sensor circuit is open,
or there is a short in the circuit)
B2579
IN CAR SEN OPEN
Detected temperature at in-vehicle
sensor 100
°
C (212
°
F) or more
(+)
(
−
)
Voltage
In-vehicle sensor
—
Connector
Terminal
M41
1
Ground
Approx. 5 V
In-vehicle sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M41
2
M50
37
Existed
HAC-50
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
B2578, B2579 IN-VEHICLE SENSOR
NO
>> Replace in-vehicle sensor.
4.
CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector.
4.
Check continuity between in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000005514609
1.
CHECK IN-VEHICLE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect in-vehicle sensor connector. Refer to
.
3.
Check resistance between in-vehicle sensor terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace in-vehicle sensor.
In-vehicle sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M41
1
M50
36
Existed
In-vehicle sensor
—
Continuity
Connector
Terminal
M41
1
Ground
Not existed
Terminal
Condition
Resistance k
Ω
Temperature
°
C (
°
F)
1
2
−
15 (5)
12.73
−
10 (14)
9.92
−
5 (23)
7.80
0 (32)
6.19
5 (41)
4.95
10 (50)
3.99
15 (59)
3.24
20 (68)
2.65
25 (77)
2.19
30 (86)
1.81
35 (95)
1.51
40 (104)
1.27
45 (113)
1.07
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