Condition NISSAN TEANA 2008 Service Manual

INTAKE DOOR CONTROL SYSTEM
HAC-151
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
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P Door Motor Circuit
Intake Door Control Specification
 Intake door position is basically set to the FRE when the intake
indicator is OFF or DEF switch is ON.
 Intake door position is basically set to the REC when the intake
indicator is ON.
 The intake door automatic control selects the FRE, the 20% FRE,
or the REC depending on the target air mix door opening angle,
based on in-vehicle temperature, ambient temperature, and sun-
load.
Automatic Re-circulation Control System
In addition to the regular automatic control, intake door condition is
controlled by gas sensor output signal when auto recirculation mode
is selected. This system automatically controls the inlet to prevent a
smell of exhaust gas from getting into vehicle by receiving signals
from the gas sensor that detects ambient atmospheric CO and NO
2.
JSIIA1133GB
JPIIA0634GB
ZJIA1166E

HAC-152
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
BLOWER MOTOR CONTROL SYSTEM
BLOWER MOTOR CONTROL SYSTEM
System DiagramINFOID:0000000003884727
System DescriptionINFOID:0000000003884728
Blower speed is automatically controlled by the temperature setting, ambient temperature, in-vehicle tempera-
ture, intake temperature, amount of sunload and air mix door position.
By pressing the AUTO switch, the blower motor starts to gradually increase air flow volume.
When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flow-
ing.
SYSTEM OPERATION
System Operation
 For air flow, the manual selection (1-7) with the fan control dial has priority.
 If the AUTO switch is pressed or if the DEF switch is pressed while in the OFF condition, it changes to the
automatic control by A/C auto amp.
 When increasing the air flow, it changes the duty ratio of the blower motor drive signal to prevent the air flow
from suddenly increasing.
 There are the following types of air flow control: starting air flow control, starting air flow control at low cool-
ant temperature, starting air flow control at high in-vehicle temperature, and air flow control at actuator oper-
ation in addition to manual control, normal automatic air flow control.
Normal Automatic Air Flow Control
 When the target temperature is set by the temperature control dial of A/C control, the A/C auto amp. per-
forms the calculation and decides the target according to the signal from each sensor.
 The A/C auto amp. changes the duty ratio of blower motor drive signal and controls the air flow continuously
so that the air flow becomes the target air flow.
 The minimum air flow will change according to the sunload when the air discharge outlet is VENT or B/L.
Fan Speed Control Specification
JPIIA0502GB
JPIIA0635GB

BLOWER MOTOR CONTROL SYSTEM
HAC-153
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
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P Starting Air Flow Control
 When starting the automatic control of air flow, the system gradually increases the duty ratio of the blower
motor drive signal to prevent too much air from blowing.
 The time period from when the air flow changes from LO to HI is approximately 8 seconds.
 It becomes the starting air flow control at low coolant temperature according to the calculation result of the A/
C auto amp. and engine coolant temperature [approximately 56°C (133°F) or less] during the automatic air
flow control.
 Do not perform the starting air flow control when the air discharge outlet is set to DEF.
Starting Fan Speed Control
Start up from COLD SOAK Condition (Automatic mode)
In cold start up condition where the engine coolant temperature is below 56°C (133°F), the blower does not
operate for a short period of time (up to 150 seconds). The exact start delay time varies depending on the
ambient temperature and engine coolant temperature.
In the most extreme case (very low ambient temperature) the blower start delay is 150 seconds as described
above. After this delay, the blower will operate at low speed until the engine coolant temperature rises above
56°C (133°F), and then the blower speed increases to the objective speed.
Start up from usual or HOT SOAK Condition (Automatic mode)
The blower will begin operation momentarily after the AUTO switch is pressed. The blower speed rises gradu-
ally to the objective speed over a time period of 3 seconds or less (actual time depends on the objective
blower speed).

HAC-156
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
DIAGNOSIS SYSTEM (HVAC)
DIAGNOSIS SYSTEM (HVAC)
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : CONSULT-III Function
INFOID:0000000003884732
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-212, "WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : DTC Index".
Display Item List
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
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.
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
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

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.

DIAGNOSIS SYSTEM (HVAC)
HAC-161
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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.

HAC-162
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
DIAGNOSIS SYSTEM (HVAC)
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
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 -
Ionizer ON ON ON ON ON OFF -
Ion mode ION ION CLEAN CLEAN ION - -
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-114, "
WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM :
Temperature Setting
Trimmer"
BLOW SETIn the FOOT mode, the air blowing to the DEF can change ON/
OFF. HAC-114, "
WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM : Foot
Position Setting Trim-
mer"
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-115, "
WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM : Inlet
Port Memory Function
(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-115, "
WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM : Inlet
Port Memory Function
(REC)"

DIAGNOSIS SYSTEM (HVAC)
HAC-163
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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-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