ECO mode NISSAN TEANA 2008 Owners Manual

HAC-10
< BASIC INSPECTION >[WITHOUT 7 INCH DISPLAY]
INSPECTION AND ADJUSTMENT
10.CHECK AUTO MODE
1. Press the AUTO switch, and then check that “AUTO” is shown on the display.
2. Operate the temperature control switch (driver side). Check that the fan speed or outlet changes (the dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting).
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to HAC-87, "
Diagnosis Chart By Symptom" and perform the appropriate diagnosis.
Temperature Setting TrimmerINFOID:0000000003846292
DESCRIPTION
If the temperature felt by the customer is different than the air flow temperature controlled by the temperature
setting, the A/C auto amp. control temperature can be adjusted to compensate for the temperature setting.
HOW TO SET
Using CONSULT-III, perform “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC.
NOTE:
 When the temperature setting is set to 25.0°C (77°F) and −3.0°C (−6°F), the temperature controlled by A/C
auto amp. is 25.0°C (77°F) −3.0°C (6°F) = 22.0°C (71°F) and the temperature becomes lower than the tem-
perature setting.
 When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10
V or less, trimmer operation is canceled. Temperature set becomes that of initial condition.
Foot Position Setting TrimmerINFOID:0000000003846293
DESCRIPTION
In the FOOT mode, the air blowing to the DEF can be turned ON/OFF.
HOW TO SET
Using CONSULT-III, perform “BLOW SET” on “WORK SUPPORT” of HVAC.
Work support items Display (°F) Display (°C)
TEMP SET CORRECT63.0
52.5
42.0
31.5
21.0
10.5
0 (initial status) 0 (initial status)
−1−0.5
−2−1.0
−3−1.5
−4−2.0
−5−2.5
−6−3.0
Work support items DisplayDEF door position
Auto control Manual control
BLOW SETMode 1 OPEN CLOSE
Mode 2 (initial status) OPEN OPEN
Mode 3 CLOSE OPEN
Mode 4 CLOSE CLOSE

HAC-18
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
AUTOMATIC AIR CONDITIONER SYSTEM
A/C Control
MODE Switch
The air discharge outlets are controlled with this switch.
Temperature Control Switch (Driver Side)
The set temperature is increased or decreased with this switch.
Temperature Control Switch (Passenger Side)
 The set temperature is increased or decreased with this switch.
 When the temperature control switch is pressed, DUAL switch indicator is turned ON.
AUTO Switch
 The compressor, intake door, air mix doors, mode doors and blower speed are automatically controlled so
that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator.
 When pressing the AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automati-
cally controlled.
Defroster (DEF) Switch
Mode doors are set to the defrost position with this switch. Also, intake door is set to the outside air position,
and compressor turns ON.
A/C Switch
Compressor turns ON or OFF with this switch.
(Pressing the A/C switch when the A/C switch is ON turns OFF the A/C switch and compressor.)
Fan Control Dial
The blower speed is manually controlled with this dial. Seven speeds are available for manual control (as
shown on the display screen).
OFF Switch
Compressor and blower turn OFF, air inlet sets to FRE, and mode the position is set to foot position.
Rear Window Defogger Switch
When indicator is ON, rear window is defogged.
Recirculation (REC) Switch
 When REC switch is ON, REC switch indicator turns ON, and air inlet is fixed to REC.
 When REC switch is pressed for approximately 1.5 seconds or longer, REC and FRE switch indicators blink
twice. Then, automatic control mode is entered. Inlet status is displayed even during automatic control.
 When FRE switch is turned ON, REC switch is automatically turned OFF (fixed to FRE mode). REC mode
can be re-entered by pressing REC switch again.
JPIIA0883ZZ
1.Temperature control switch (passen-
ger side)2. MODE switch 3. Recirculation (REC) switch
4. Fan control dial 5. Defroster (DEF) switch 6. AUTO switch
7.Temperature control switch (driver
side)8. A/C switch 9. Rear window defogger switch
10. OFF switch 11. Fresh (FRE) switch 12. DUAL switch

AUTOMATIC AIR CONDITIONER SYSTEM
HAC-19
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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P Fresh (FRE)Switch
 When FRE switch is ON, FRE switch indicator turns ON, and air inlet is fixed to FRE.
 When FRE switch is pressed for approximately 1.5 seconds or longer, REC and FRE switch indicators blink
twice. Then, automatic control mode is entered. Inlet status is displayed even during automatic control.
 When REC switch is turned ON, FRE switch is automatically turned OFF (fixed to REC mode). FRE mode
can be re-entered by pressing FRE switch again.
DUAL Switch
 When the DUAL switch indicator is ON, the driver side and passenger side, temperature can each be set
independently.
 When the DUAL switch indicator is OFF, the driver side setting temperature is applied to both sides.

BLOWER MOTOR CONTROL SYSTEM
HAC-35
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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-38
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
DIAGNOSIS SYSTEM (HVAC)
DIAGNOSIS SYSTEM (HVAC)
CONSULT-III FunctionINFOID:0000000003846320
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-85, "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

A/C AUTO AMP.
HAC-67
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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A/C AUTO AMP.
DescriptionINFOID:0000000003940951
COMPONENT DESCRIPTION
A/C Auto Amp. (Air Conditioner Automatic Amplifier)
The A/C auto amp. (1) has a built-in microcomputer that processes
information sent from various sensors needed for air conditioner
operation. The air mix door motors, the mode door motor, the intake
door motor, the blower motor and the compressor are then con-
trolled.
When the various switches and temperature control dial are oper-
ated, data is input to the A/C auto amp. from the A/C control.
Component Function CheckINFOID:0000000003940952
1.CHECK OPERATION
1. Press the AUTO switch, and then check that “AUTO” is shown on the display.
2. Operate the temperature control dial (driver side). Check that the fan speed or outlet changes. (The dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting.)
Does it operate normally?
YES >> INSPECTION END
NO >> Perform trouble diagnosis for the A/C system. Refer to HAC-67, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003940953
1.INSPECTION BY FAIL-SAFE FUNCTION
1. Turn the ignition switch ON.
2. After approximately 30 seconds, check that the air conditioner is operated by the fail-safe function (the
operation display of air conditioner is not performed). Refer to HAC-84, "
Fail-Safe".
Is the fail-safe function operated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT AND GROUND
Check A/C auto amp. power supply circuit and ground circuit. Refer to HAC-65, "
A/C AUTO AMP. : Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace parts according to the inspection results.
3.CHECK A/C CONTROL SIGNAL CIRCUIT
Check the A/C control signal circuit. Refer to HAC-74, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace parts according to the inspection results.
JPIIA0894ZZ

HAC-70
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
BLOWER MOTOR
YES >> GO TO 6.
NO >> Repair harness or connector.
6.CHECK A/C AUTO AMP. OUTPUT SIGNAL
1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch ON.
3. Set MODE switch to the VENT position.
4. Check the output waveform between blower motor harness connector and ground using an oscilloscope,
while varying the fan speed from 1 to 7.
Is the inspection result normal?
YES >> Replace the blower motor.
NO >> Replace the A/C auto amp.
7.CHECK POWER VOLTAGE OF BLOWER RELAY
1. Turn the ignition switch OFF.
2. Remove the blower relay. Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
3. Turn the ignition switch ON.
4. Check the voltage between blower relay fuse block side terminal and ground. Refer to PG-101, "
Fuse,
Connector and Terminal Arrangement" for relay terminal assignment.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Inspection the power supply circuit. Refer to PG-55, "
Wiring Diagram - IGNITION POWER SUP-
PLY -".
8.CHECK BLOWER RELAY
1. Turn the ignition switch OFF.
2. Install the blower relay. Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
3. Turn the ignition switch ON.
4. Check the operating sound of blower relay.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace the blower relay.
9.CHECK FUSE
Check 15A fuses (Nos. 21 and 22).
JPIIA1025GB
(+) (−)
Vol tag e
Blower relay —
1
Ground Battery voltage
3

HAC-110
< BASIC INSPECTION >[WITH 7 INCH DISPLAY]
INSPECTION AND ADJUSTMENT
10.CHECK AUTO MODE
1. Press the AUTO switch, and then check that “AUTO” is shown on the display.
2. Operate the temperature control dial (driver side). Check that the fan speed or outlet changes (the dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting).
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to HAC-226, "
Diagnosis Chart By Symptom" and perform the appropriate diagnosis.
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Temperature Setting Trim-
mer
INFOID:0000000003884687
DESCRIPTION
If the temperature felt by the customer is different than the air flow temperature controlled by the temperature
setting, the A/C auto amp. control temperature can be adjusted to compensate for the temperature setting.
HOW TO SET
Using CONSULT-III, perform “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC.
NOTE:
 When the temperature setting is set to 25.0°C (77°F) and −3.0°C (−6°F), the temperature controlled by A/C
auto amp. is 25.0°C (77°F) −3.0°C (6°F) = 22.0°C (71°F) and the temperature becomes lower than the tem-
perature setting.
 When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10
V or less, trimmer operation is canceled. Temperature set becomes that of initial condition.
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Foot Position Setting Trim-
mer
INFOID:0000000003884688
DESCRIPTION
In the FOOT mode, the air blowing to the DEF can be turned ON/OFF.
HOW TO SET
Using CONSULT-III, perform “BLOW SET” on “WORK SUPPORT” of HVAC.
Work support items Display (°F) Display (°C)
TEMP SET CORRECT63.0
52.5
42.0
31.5
21.0
10.5
0 (initial status) 0 (initial status)
−1−0.5
−2−1.0
−3−1.5
−4−2.0
−5−2.5
−6−3.0

INSPECTION AND ADJUSTMENT
HAC-111
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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, trimmer operation is cancelled. Wind distribution rate set becomes that of initial condition.
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Inlet Port Memory Function
(FRE)
INFOID:0000000003884689
DESCRIPTION
 If the ignition switch is turned to the OFF position while the FRE switch is set to ON (fresh air intake), “Per-
form the memory” or “Do not perform the memory” of the FRE switch ON (fresh air intake) 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 position again.
 If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-
tion switch to the ON position again.
HOW TO SET
Using CONSULT-III, perform “FRE MEMORY SET” on “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V
or less, the setting of the FRE switch memory function may be cancelled.
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Inlet Port Memory Function
(REC)
INFOID:0000000003884690
DESCRIPTION
 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 (recirculation) when turning the ignition switch
to the ON position again.
 If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-
tion switch to the ON position again.
HOW TO SET
Using CONSULT-III, perform “REC MEMORY SET” on “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10 V
or less, the setting of the REC switch memory function may be cancelled.
WITH INTELLIGENT AIR CONDITIONER SYSTEM
Work support items DisplayDEF door position
Auto control Manual control
BLOW SETMode 1 OPEN CLOSE
Mode 2 (initial status) OPEN OPEN
Mode 3 CLOSE OPEN
Mode 4 CLOSE CLOSE
Work support items Display Setting
FRE MEMORY SETWITHOUT (initial status) Perform the memory of manual FRE
WITH Do not perform the memory of manual FRE (auto control)
Work support items Display Setting
REC MEMORY SETWITHOUT Perform the memory of manual REC
WITH (initial status) Do not perform the memory of manual REC (auto control)

HAC-114
< BASIC INSPECTION >[WITH 7 INCH DISPLAY]
INSPECTION AND ADJUSTMENT
2. Ion indicator is shown on the display.
3. Press OFF switch.
4. Ion indicator is turned OFF.
Is the inspection result normal?
YES >> GO TO 11.
NO >> Refer to HAC-227, "
WITH INTELLIGENT AIR CONDITIONER SYSTEM : Inspection procedure".
11 .CHECK ION CONTROL MODE
1. Turn ignition switch OFF and restart the engine.
2. Turn fan control dial clockwise.
3. Ion indicator (blue) is turned ON.
4. Ion indicator (blue) changes to ion indicator (green) after approximately 15 minutes.
5. Ion indicator (green) changes to ion indicator (blue) after approximately 15 minutes.
6. Press CLEAN switch.
7. Ion indicator (blue) changes to ion indicator (green) after approximately 30 minutes.
8. Ion indicator (green) changes to ion indicator (blue) after approximately 15 minutes.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace unified meter and A/C amp.
WITH INTELLIGENT AIR CONDITIONER SYSTEM : Temperature Setting Trimmer
INFOID:0000000003888718
DESCRIPTION
If the temperature felt by the customer is different than the air flow temperature controlled by the temperature
setting, the A/C auto amp. control temperature can be adjusted to compensate for the temperature setting.
HOW TO SET
Using CONSULT-III, perform “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC.
NOTE:
 When the temperature setting is set to 25.0°C (77°F) and −3.0°C (−6°F), the temperature controlled by A/C
auto amp. is 25.0°C (77°F) −3.0°C (6°F) = 22.0°C (71°F) and the temperature becomes lower than the tem-
perature setting.
 When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10
V or less, trimmer operation is canceled. Temperature set becomes that of initial condition.
WITH INTELLIGENT AIR CONDITIONER SYSTEM : Foot Position Setting Trimmer
INFOID:0000000003888719
DESCRIPTION
Work support items Display (°F) Display (°C)
TEMP SET CORRECT63.0
52.5
42.0
31.5
21.0
10.5
0 (initial status) 0 (initial status)
−1−0.5
−2−1.0
−3−1.5
−4−2.0
−5−2.5
−6−3.0