2008 NISSAN TEANA sensor

HAC-158
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
DIAGNOSIS SYSTEM (HVAC)
ACTIVE TEST
HVAC TEST
NOTE:
 Perform the inspection of each output device after starting the engine because the compressor is operated.
 When choosing to “MODE 7”, error message is displayed but it is not malfunction.
WORK SUPPORT
INT TEMP CAL [°C] Intake sensor value calculated by A/C auto amp.
SUNL SEN CAL
[w/m
2]Sunload sensor value calculated by A/C auto amp.
FAN DUTY [%] Duty ratio of blower motor judged by A/C auto amp.
XMTarget discharge air temperature judged by A/C auto amp. according to the tempera-
ture setting and the value from each sensor
ENG COOL TEMP [°C] Water temperature signal value received from ECM via CAN communication
VEHICLE SPEED[Mph
(km/h)]Vehicle speed signal value received from meter via CAN communication Monitor item [Unit] Description
Test item Description
ALL SEG NOTE:
 Item can be displayed but cannot be tested.
 When choosing to turn “ALL SEG” on, error message is displayed but it is not malfunction.
HVAC TESTThe operation check of A/C system can be performed by selecting the mode. Refer to the fol-
lowing table for the conditions of each mode.
Te s t i t e m
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Mode door position VENT B/L1 B/L2 AUTO FOOT D/F DEF -
Intake door position REC REC 20% FRE FRE FRE FRE -
Air mix door position
(driver & passenger
side)FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT -
Blower motor duty ratio 37% 91% 65% 65% 65% 91% -
Compressor (Magnet
clutch)ON ON OFF OFF ON ON -
Work item Description Reference
TEMP SET CORRECTIf the temperature felt by the customer is different than the air flow
temperature controlled by the temperature setting, the auto ampli-
fier control temperature can be adjusted to compensate for the
temperature setting. HAC-110, "
WITHOUT
INTELLIGENT AIR
CONDITIONER SYS-
TEM : Temperature Set-
ting Trimmer"
BLOW SETIn the FOOT mode, the air blowing to the DEF can change ON/
OFF. HAC-110, "
WITHOUT
INTELLIGENT AIR
CONDITIONER SYS-
TEM : Foot Position Set-
ting Trimmer"

DIAGNOSIS SYSTEM (HVAC)
HAC-159
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
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NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V
or less, the setting of WORK SUPPORT may be cancelled.
WITH INTELLIGENT AIR CONDITIONER SYSTEM
WITH INTELLIGENT AIR CONDITIONER SYSTEM : CONSULT-III Function
INFOID:0000000003884733
CONSULT-III can display each diagnosis item using the diagnosis test modes shown as per the following.
CONSULT-III application items
SELF DIAGNOSTIC RESULT
Refer to HAC-224, "WITH INTELLIGENT AIR CONDITIONER SYSTEM : DTC Index".
Display Item List
FRE MEMORY SET If the ignition switch is turned to the OFF position while the FRE
switch is set to ON (fresh air intake), “Perform the memory” or
“Do not perform the memory” of the FRE switch ON (fresh air in-
take) condition can be selected.
 If “Perform the memory” was set, the FRE switch will be ON
(fresh air intake) when turning the ignition switch to the ON posi-
tion again.
 If “Do not perform the memory” was set, the air inlets will be con-
trolled automatically when turning the ignition switch to the ON
position again. HAC-111, "
WITHOUT IN-
TELLIGENT AIR CON-
DITIONER SYSTEM :
Inlet Port Memory Func-
tion (FRE)"
REC MEMORY SET If the ignition switch is turned to the OFF position while the REC
switch is set to ON (recirculation), “Perform the memory” or “Do
not perform the memory” of the REC switch ON (recirculation)
condition can be selected.
 If “Perform the memory” was set, the REC switch will be ON (re-
circulation) when turning the ignition switch to the ON position
again.
 If “Do not perform the memory” was set, the air inlets will be con-
trolled automatically when turning the ignition switch to the ON
position again. HAC-111, "
WITHOUT IN-
TELLIGENT AIR CON-
DITIONER SYSTEM :
Inlet Port Memory Func-
tion (REC)"
Work item Description Reference
Diagnosis mode Description
ECU Identification Displays the A/C auto amp. number.
Self Diagnostic Result Displays the diagnosis results judged by A/C auto amp.
Data Monitor Displays A/C auto amp. input/output data in real time.
Active Test The signals used to activate each device are forcibly supplied from A/C auto amp.
Work SupportChanges the setting for each system function.
 Temperature setting trimmer
 Inlet port memory function (FRE)
 Inlet port memory function (REC)
 Foot position setting trimmer
 Gas sensor sensitivity adjustment function
 Clean switch interlocking movement change function
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
U1000 CAN COMM CIRCUITWhen A/C auto amp. is not transmitting
or receiving CAN communication signal
for 2 or more seconds.CAN communication system
U1010 CONTROL UNIT (CAN)When detecting error during the initial
diagnosis of CAN controller of A/C auto
amp.A/C auto amp.

HAC-160
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
DIAGNOSIS SYSTEM (HVAC)
B257B AMB TEMP SEN (SHORT)Detected temperature at ambient sen-
sor −44°C (−47°F) or less Ambient sensor
 A/C auto amp.
 Harness and connector
(Ambient sensor circuit is open,
or there is a short in the circuit) B257C AMB TEMP SEN (OPEN)Detected temperature at ambient sen-
sor 100°C (212°F) or more
B2578IN CAR SENSOR (OUT OF RANGE
[LOW])Detected temperature at in-vehicle sen-
sor −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 sen-
sor 100°C (212°F) or more
B2581 EVAP TEMP SEN (SHORT)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 EVAP TEMP SEN (OPEN)Detected temperature at intake sensor
69°C (156°F) or more
B262A GAS SENSOR (SHORT) Gas sensor duty 10% or less  Gas sensor
 A/C auto amp.
 Harness and connector
(Gas sensor circuit is open, or
there is a short in the circuit) B262B GAS SENSOR (OPEN) Gas sensor duty 90% or more
B2630
*SUNLOAD SEN (SHORT)Detected calorie at sunload sensor 64.7
w/m2 (30 kcal/m2·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
*SUNLOAD SEN (OPEN)Detected calorie at sunload sensor
2832 w/m2 (1304 kcal/m2·h) or more
B2632 DR AIRMIX ACTR (SHORT)Air mix door PBR (driver side) position
5% or less Air mix door motor (driver side)
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Air mix door motor is open or
shorted) B2633 DR AIRMIX ACTR (OPEN)Air mix door PBR (driver side) position
95% or more
B2634 PASS AIRMIX ACTR (SHORT)Air mix door PBR (passenger side) po-
sition 5% or less Air mix door motor (passenger
side)
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Air mix door motor is open or
shorted) B2635 PASS AIRMIX ACTR (OPEN)Air mix door PBR (passenger side) po-
sition 95% or more
B2636 DR VENT DOOR FAILWhen the malfunctioning door position
is detected at VENT position
 Mode door motor
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Mode door motor is open or
shorted) B2637 DR B/L DOOR FAILWhen the malfunctioning door position
is detected at B/L position
B2638 DR D/F1 DOOR FAILWhen the malfunctioning door position
is detected at FOOT position
B2639 DR DEF DOOR FAILWhen the malfunctioning door position
is detected at DEF position
B263D FRE DOOR FAILWhen the malfunctioning intake door
position is detected at FRE position Intake door motor
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Intake door motor is open or
shorted) B263E 20P FRE DOOR FAILWhen the malfunctioning intake door
position is detected at 20%FRE posi-
tion
B263F REC DOOR FAILWhen the malfunctioning intake door
position is detected at REC position DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause

DIAGNOSIS SYSTEM (HVAC)
HAC-161
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
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*: Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diag-
nosis indicates even though the sunload sensor is functioning normally.
DATA MONITOR
Display item list
ACTIVE TEST
B2654 D/F2 DOOR FAILWhen the malfunctioning door position
is detected at D/F position Mode door motor
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Mode door motor is open or
shorted) B2655 B/L2 DOOR FAILWhen the malfunctioning door position
is detected at B/L2 position
B2656 BTC FRE DOOR FAILWhen the malfunctioning intake door
position is detected Intake door motor
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Intake door motor is open or
shorted)
B2657 GAS SENSOR CIRCUIT (SHORT) Gas sensor duty 0%  Gas sensor
 A/C auto amp.
 Harness and connector
(Gas sensor circuit is open, or
there is a short in the circuit) B2658 GAS SENSOR CIRCUIT (OPEN) Gas sensor duty 100% DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
Monitor item [Unit] Description
COMP REQ SIG [On/Off] Displays A/C switch ON/OFF status transmitted to other units via CAN communication
FAN REQ SIG [On/Off]Displays blower switch ON/OFF status transmitted to other units via CAN communica-
tion
AMB TEMP SEN [°C]Ambient sensor value converted from ambient sensor signal received from ambient
sensor
IN-VEH TEMP [°C]In-vehicle sensor value converted from in-vehicle sensor signal received from in-vehi-
cle sensor
INT TEMP SEN [°C] Intake sensor value converted from intake sensor signal received from intake sensor
SUNLOAD SEN
[w/m
2]Sunload sensor value converted from sunload sensor signal received from sunload
sensor
AMB SEN CAL [°C] Ambient sensor value calculated by A/C auto amp.
IN-VEH CAL [°C] In-vehicle sensor value calculated by A/C auto amp.
INT TEMP CAL [°C] Intake sensor value calculated by A/C auto amp.
SUNL SEN CAL
[w/m
2]Sunload sensor value calculated by A/C auto amp.
FAN DUTY [%] Duty ratio of blower motor judged by A/C auto amp.
XMTarget discharge air temperature judged by A/C auto amp. according to the tempera-
ture setting and the value from each sensor
ENG COOL TEMP [°C] Water temperature signal value received from ECM via CAN communication
VEHICLE SPEED[Mph
(km/h)]Vehicle speed signal value received from meter via CAN communication
Test item Description
ALL SEGNOTE:
 Item can be displayed but cannot be tested.
 When choosing to turn “ALL SEG” on, error message is displayed but it is not malfunction.
HVAC TESTThe operation check of A/C system can be performed by selecting the mode. Refer to the fol-
lowing table for the conditions of each mode.

DIAGNOSIS SYSTEM (HVAC)
HAC-163
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
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NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V
or less, the setting of WORK SUPPORT may be cancelled.
GAS SENSOR SENSITIVITY AD-
JUSTMENT FUNCTIONGas sensor sensitivity can be changed when smell of exhaust gas
introduced in the automatic re-circulation control differs from cus-
tomer’s sensible smell.HAC-116, "
WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM : Gas
Sensor Sensitivity Ad-
justment Function (With
Intelligent Air Conditioner
System)"
CLEAN SWITCH INTERLOCKING
MOVEMENT CHANGE FUNCTIONOperation of the clean switch, which activates the automatic re-cir-
culation control system, can be set to become available when the
A/C switch is OFF. In addition, when the clean switch is ON, it can
be set that the A/C switch is not turned ON in synchronization with
the clean switch.HAC-116, "
WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM :
Clean Switch Interlock-
ing Movement Change
Function (With Intelligent
Air Conditioner System)"
Work item Description Reference

HAC-166
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B257B, B257C AMBIENT SENSOR
B257B, B257C AMBIENT SENSOR
DescriptionINFOID:0000000003884740
COMPONENT DESCRIPTION
Ambient Sensor
 The ambient sensor (1) is installed behind left side of front bumper.
 It detects ambient temperature and converts it into a resistance
value which is then input into the A/C auto amp.
Ambient Sensor Circuit
AMBIENT TEMPERATURE INPUT PROCESS
The A/C auto amp. equips a processing circuit for the ambient sensor input. However, when the temperature
detected by the ambient sensor increases quickly, the processing circuit retards the A/C auto amp. function. It
only allows the A/C auto amp. to recognize an ambient temperature increase of 0.33°C (0.6°F) per 100 sec-
onds.
As an example, consider stopping for a few minutes after high speed driving. Although the actual ambient tem-
perature has not changed, the temperature detected by the ambient sensor increases. This is because the
heat from the engine compartment can radiate to the front bumper area, the location of the ambient sensor.
DTC LogicINFOID:0000000003884741
DTC DETECTION LOGIC
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.
DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
JPIIA0898ZZ
JPIIA0612GB
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
B257B AMB TEMP SEN (SHORT)Detected temperature at ambient sensor
−44°C (−47°F) or less Ambient sensor
 A/C auto amp.
 Harness and connector
(Ambient sensor circuit is open,
or there is a short in the circuit) B257C AMB TEMP SEN (OPEN)Detected temperature at ambient sensor
100°C (212°F) or more

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

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 InspectionINFOID:0000000003884743
1.CHECK AMBIENT SENSOR
1. Turn ignition switch OFF.
2. Disconnect ambient sensor connector. Refer to VTL-81, "
Exploded View".
3. Check resistance between ambient sensor terminals.
Is the inspection result normal?
YES >> END.
NO >> Replace ambient sensor.
Ambient sensor
—Continuity
Connector Terminal
E337 1 Ground Not existed
Te r m i n a lCondition
Resistance kΩ
Temperature °C (°F)
12−15 (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