Nissan Maxima. Manual — part 715
HAC-36
< DTC/CIRCUIT DIAGNOSIS >
[WITH COLOR DISPLAY]
B2578, B2579 IN-VEHICLE SENSOR
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.“B2578” or “B2579” displayed?
YES
>> Perform trouble diagnosis for the in-vehicle sensor. Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010050976
Regarding Wiring Diagram information, refer to
HAC-67, "Wiring Diagram - With Color Display"
.
1.
CHECK IN-VEHICLE SENSOR POWER SUPPLY
1. Disconnect in-vehicle sensor connector.
2. Turn ignition switch ON.
3. Check voltage between in-vehicle sensor harness connector
M34 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK 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
M34 (A) terminal 2 and A/C auto amp. harness connector M37
(B) terminal 37.
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-37, "Component Inspection"
DTC
Items
(CONSULT screen terms)
Diagnostic item is detected when...
Possible cause
B2578
IN-CAR SENSOR (OUT OF RANGE
[LOW])
Detected temperature at in-vehicle
sensor 55
°C (131°F) or more
• 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 SENSOR (OUT OF RANGE
[HI])
Detected temperature at in-vehicle
sensor -30
°C (-22°F) or less
1 - Ground
: Approx. 5V
AWIIA1136ZZ
2 - 37
: Continuity should exist.
AWIIA1137ZZ
B2578, B2579 IN-VEHICLE SENSOR
HAC-37
< DTC/CIRCUIT DIAGNOSIS >
[WITH COLOR 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. Refer to
HAC-100, "Removal and Installation"
.
NO
>> Replace in-vehicle sensor. Refer to
HAC-102, "Removal and Installation"
.
4.
CHECK 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
M34 (A) terminal 1 and A/C auto amp. harness connector M37
(B) terminal 36.
4. Check continuity between in-vehicle sensor harness connector
M34 (A) terminal 1 and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-100, "Removal and Installation"
.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000010050977
1.
CHECK IN-VEHICLE SENSOR
1. Turn ignition switch OFF.
2. Disconnect in-vehicle sensor connector.
3. Check resistance between in-vehicle sensor terminals.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace in-vehicle sensor. Refer to
HAC-102, "Removal and Installation"
.
1 - 36
: Continuity should exist.
1 - Ground
: Continuity should not exist.
AWIIA1138ZZ
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-38
< DTC/CIRCUIT DIAGNOSIS >
[WITH COLOR DISPLAY]
B2581, B2582 INTAKE SENSOR
B2581, B2582 INTAKE SENSOR
Description
INFOID:0000000010050978
Intake Sensor
• The intake sensor is located on the evaporator.
• 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:0000000010050979
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
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010050980
WJIA0100E
JPIIA0614GB
DTC
Items
(CONSULT screen terms)
Diagnostic item is detected when...
Possible cause
B2581
EVAP TEMP SEN (SHORT)
Detected temperature at intake sensor
55
°C (131°F) or more
• Intake sensor
• A/C auto amp.
• Harness and connector
(Intake sensor circuit is open, or there is a
short in the circuit)
B2582
EVAP TEMP SEN (OPEN)
Detected temperature at intake sensor
-30
°C (-22°F) or less
B2581, B2582 INTAKE SENSOR
HAC-39
< DTC/CIRCUIT DIAGNOSIS >
[WITH COLOR DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Regarding Wiring Diagram information, refer to
HAC-67, "Wiring Diagram - With Color Display"
1.
CHECK INTAKE SENSOR POWER SUPPLY
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
3. Check voltage between intake sensor harness connector M69
terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK 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 M69
(A) terminal 2 and A/C auto amp. harness connector M37 (B)
terminal 37.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INTAKE SENSOR
Check intake sensor. Refer to
HAC-39, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-100, "Removal and Installation"
.
NO
>> Replace intake sensor. Refer to
HAC-104, "Removal and Installation"
4.
CHECK 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 M69
(A) terminal 1 and A/C auto amp. harness connector M37 (B)
terminal 16.
4. Check continuity between intake sensor harness connector M69
(A) terminal 1 and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-100, "Removal and Installation"
.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000010050981
1.
CHECK INTAKE SENSOR
1. Turn ignition switch OFF.
2. Disconnect intake sensor connector.
3. Check resistance between intake sensor terminals.
1 - Ground
: Approx. 5V
AWIIA1174ZZ
2 - 37
: Continuity should exist.
AWIIA1175ZZ
1 - 16
: Continuity should exist.
1 - Ground
: Continuity should not exist.
AWIIA1176ZZ
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