2008 NISSAN TEANA Service Manual

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Page 2793 of 5121

NISSAN TEANA 2008 Service Manual U1010 CONTROL UNIT (CAN)
HAC-165
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000003884737
Initial diagnosis of A/C auto

Page 2794 of 5121

NISSAN TEANA 2008 Service Manual HAC-166
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B257B, B257C AMBIENT SENSOR
B257B, B257C AMBIENT SENSOR
DescriptionINFOID:0000000003884740
COMPONENT DESCRIPTION
Ambient Sensor
The ambient senso

Page 2795 of 5121

NISSAN TEANA 2008 Service Manual B257B, B257C AMBIENT SENSOR
HAC-167
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1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any D

B257B, B257C AMBIENT SENSOR
HAC-167
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC 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 HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
If there is an open circuit in the ambient sensor, A/C auto amp. registers extreme cold [−44°C (−47°F)] and
adjusts the temperature control warmer.
Is DTC
“B257B” or “B257C” displayed?
YES >> Perform trouble diagnosis for the ambient sensor. Refer to HAC-167, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003884742
1.CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
1. Disconnect ambient sensor connector.
2. Turn ignition switch ON.
3. Check voltage between ambient sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND A/C AUTO AMP.
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between ambient 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 AMBIENT SENSOR
Check ambient sensor. Refer to HAC-168, "
Component Inspection".
Is the inspection result normal?
YES >> Replace A/C auto amp.
NO >> Replace ambient sensor.
4.CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND A/C AUTO AMP.
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between ambient sensor harness connector and A/C auto amp. harness connector.
4. Check continuity between ambient sensor harness connector and ground.
(+) (−)
Vo l ta g e Ambient sensor
—
Connector Terminal
E337 1 Ground Approx. 5 V
Ambient sensor A/C auto amp.
Continuity
Connector Terminal Connector Terminal
E337 2 M50 37 Existed
Ambient sensor A/C auto amp.
Continuity
Connector Terminal Connector Terminal
E337 1 M50 35 Existed

Page 2796 of 5121

NISSAN TEANA 2008 Service Manual HAC-168
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B257B, B257C AMBIENT SENSOR
Is the inspection result normal?
YES >> Replace A/C auto amp.
NO >> Repair harness or connector.
Component InspectionIN

Page 2797 of 5121

NISSAN TEANA 2008 Service Manual B2578, B2579 IN-VEHICLE SENSOR
HAC-169
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B2578, B2579 IN-VEHICLE SENSOR
DescriptionINFOID:0000000003884744
In-vehicle Sensor

Page 2798 of 5121

NISSAN TEANA 2008 Service Manual HAC-170
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B2578, B2579 IN-VEHICLE SENSOR
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Lo

HAC-170
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B2578, B2579 IN-VEHICLE SENSOR
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
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 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 HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
Is DTC
“B2578” or “B2579” displayed?
YES >> Perform trouble diagnosis for the in-vehicle sensor. Refer to HAC-170, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003884746
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-171, "
Component Inspection".
Is the inspection result normal?
YES >> Replace A/C auto amp.
NO >> Replace in-vehicle sensor.
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
B2578IN CAR SENSOR (OUT OF RANGE
[LOW])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) B2579IN CAR SENSOR (OUT OF RANGE
[HI])Detected temperature at in-vehicle
sensor 100°C (212°F) or more
(+) (−)
Vol tag e 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

Page 2799 of 5121

NISSAN TEANA 2008 Service Manual B2578, B2579 IN-VEHICLE SENSOR
HAC-171
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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4.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.
1. Turn igni

Page 2800 of 5121

NISSAN TEANA 2008 Service Manual HAC-172
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B2581, B2582 INTAKE SENSOR
B2581, B2582 INTAKE SENSOR
DescriptionINFOID:0000000003884748
Intake Sensor
The intake sensor (2) is located on the ev

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