sensor NISSAN TEANA 2008 Service Manual

EVAPORATOR
HA-53
< ON-VEHICLE REPAIR >
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Removal and InstallationINFOID:0000000003795855
REMOVAL
1. Remove evaporator pipe assembly. Refer to HA-54, "Exploded View".
2. Slide evaporator (1) toward the right side of the vehicle (as
shown in the figure), and then remove intake sensor (2) from
evaporator.
3. Remove evaporator.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
 Replace O-rings with new ones. Then apply compressor oil to them when installing.
 Mark the mounting position of intake sensor bracket prior to removal so that the reinstalled sensor
can be located in the same position.
 Do not rotate the bracket insertion part when removing and installing the intake sensor.
 Check for refrigerant leakage when charging refrigerant.
37. Defroster door link 38. Foot door link 39. Max. cool door lever
40. Foot door lever 41. Defroster door lever 42. Adapter case
43. Distributor lower case 44. Ventilator door 45. Intake sensor
46. Intake sensor bracket 47. Foot door 48. Max. cool door
49. Defroster door 50. Air mix door (Slide door)
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0907ZZ

EVAPORATOR PIPE ASSEMBLY
HA-55
< ON-VEHICLE REPAIR >
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Removal and InstallationINFOID:0000000003795853
REMOVAL
1. Disconnect the battery cable from the negative terminal after setting the temperature (passenger side) to
18°C (60°F).
2. Use refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Remove mounting bolt (A), and then disconnect low-pressure
pipe (1) and high-pressure pipe (2) from expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve
with suitable material such as vinyl tape to avoid the entry
of air.
4. Remove blower unit. Refer to the following.
VTL-29, "
Exploded View" (WITHOUT 7 INCH DISPLAY)
VTL-87, "
Exploded View" (WITH 7 INCH DISPLAY)
5. Remove foot duct (right). Refer to the following.
VTL-59, "
FOOT DUCT : Exploded View" (WITHOUT 7 INCH DISPLAY)
VTL-117, "
FOOT DUCT : Exploded View" (WITH 7 INCH DISPLAY)
6. Disconnect air mix door motor (passenger side) connector.
7. Remove mounting screws (A), and then remove heater & cool-
ing unit case cover (1) with air mix door motor (passenger side)
(2) attached.
8. Remove mounting bolts (A), and then remove evaporator pipe
assembly (1) from evaporator with expansion valve (2) attached.
CAUTION:
Cap or wrap the joint of the A/C piping and evaporator with
suitable material such as vinyl tape to avoid the entry of air.
37. Defroster door link 38. Foot door link 39. Max. cool door lever
40. Foot door lever 41. Defroster door lever 42. Adapter case
43. Distributor lower case 44. Ventilator door 45. Intake sensor
46. Intake sensor bracket 47. Foot door 48. Max. cool door
49. Defroster door 50. Air mix door (Slide door)
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0915ZZ
JPIIA0563ZZ
JPIIA0546ZZ

HA-58
< ON-VEHICLE REPAIR >
EXPANSION VALVE
Removal and Installation
INFOID:0000000003795857
REMOVAL
1. Use refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove mounting bolt (A), and then disconnect low-pressure
pipe (1) and high-pressure pipe (2) from expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve
with suitable material such as vinyl tape to avoid the entry
of air.
3. Remove mounting bolts (A), and then remove the expansion
valve (1).
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve
with suitable material such as vinyl tape to avoid the entry
of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
 Replace O-rings with new ones. Then apply compressor oil to them when installing.
 Check for leakages when recharging refrigerant.
37. Defroster door link 38. Foot door link 39. Max. cool door lever
40. Foot door lever 41. Defroster door lever 42. Adapter case
43. Distributor lower case 44. Ventilator door 45. Intake sensor
46. Intake sensor bracket 47. Foot door 48. Max. cool door
49. Defroster door 50. Air mix door (Slide door)
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0915ZZ
JPIIA0985ZZ

HAC-1
VENTILATION, HEATER & AIR CONDITIONER
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SECTION HAC
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CONTENTS
HEATER & AIR CONDITIONING CONTROL SYSTEM
WITHOUT 7 INCH DISPLAY
BASIC INSPECTION ....... .............................
6
DIAGNOSIS AND REPAIR WORKFLOW ..... .....6
Work Flow ........................................................... ......6
INSPECTION AND ADJUSTMENT .....................8
Description & Inspection ..................................... ......8
Temperature Setting Trimmer .................................10
Foot Position Setting Trimmer .................................10
Inlet Port Memory Function (FRE) ..........................11
Inlet Port Memory Function (REC) ..........................11
FUNCTION DIAGNOSIS ..............................12
COMPRESSOR CONTROL FUNCTION ........ ....12
Description .......................................................... ....12
Fail-Safe ..................................................................13
Component Part Location .......................................13
Component’s Role ...................................................15
AUTOMATIC AIR CONDITIONER SYSTEM .....17
System Diagram .................................................. ....17
System Description .................................................17
Component Part Location .......................................24
Component Description ...........................................26
MODE DOOR CONTROL SYSTEM ...................28
System Diagram .................................................. ....28
System Description .................................................28
AIR MIX DOOR CONTROL SYSTEM ................30
System Diagram .................................................. ....30
System Description .................................................30
INTAKE DOOR CONTROL SYSTEM ................32
System Diagram .................................................. ....32
System Description .................................................32
BLOWER MOTOR CONTROL SYSTEM ...........34
System Diagram .................................................. ....34
System Description .................................................34
MAGNET CLUTCH CONTROL SYSTEM .........36
System Diagram .................................................. ....36
System Description ..................................................36
CAN COMMUNICATION SYSTEM ...................37
System Description ..................................................37
DIAGNOSIS SYSTEM (HVAC) .........................38
CONSULT-III Function ............................................38
COMPONENT DIAGNOSIS .........................42
U1000 CAN COMM CIRCUIT ...........................42
Description ........................................................... ....42
DTC Logic ................................................................42
Diagnosis Procedure ..............................................42
U1010 CONTROL UNIT (CAN) .........................43
Description ...............................................................43
DTC Logic ................................................................43
Diagnosis Procedure ...............................................43
B257B, B257C AMBIENT SENSOR .................44
Description ...............................................................44
DTC Logic ................................................................44
Diagnosis Procedure ...............................................45
Component Inspection .............................................46
B2578, B2579 IN-VEHICLE SENSOR ..............47
Description ...............................................................47
DTC Logic ................................................................47
Diagnosis Procedure ...............................................48
Component Inspection .............................................49
B2581, B2582 INTAKE SENSOR .....................50
Description ...............................................................50
DTC Logic ................................................................50
Diagnosis Procedure ...............................................50
Component Inspection .............................................51
B2630, B2631 SUNLOAD SENSOR .................53
Description ...............................................................53

HAC-3
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HAC
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P WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Foot Position Setting Trimmer .............
110
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Inlet Port Memory Function (FRE) .......
111
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Inlet Port Memory Function (REC) ......
111
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
111
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Description & Inspection .............................
112
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Temperature Setting Trimmer ....................
114
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Foot Position Setting Trimmer ....................
114
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Inlet Port Memory Function (FRE) ..............
115
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Inlet Port Memory Function (REC) .............
115
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Gas Sensor Sensitivity Adjustment Func-
tion (With Intelligent Air Conditioner System) ........
116
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Clean Switch Interlocking Movement
Change Function (With Intelligent Air Conditioner
System) .................................................................
116
FUNCTION DIAGNOSIS ............................117
COMPRESSOR CONTROL FUNCTION ..........117
Description ............................................................117
Fail-Safe ................................................................118
Component Part Location .....................................118
Component’s Role .................................................120
AUTOMATIC AIR CONDITIONER SYSTEM ...122
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM ..................................................................
122
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : System Diagram ..................................
122
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : System Description .............................
122
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Component Part Location ....................
129
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Component Description .......................
132
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
132
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : System Diagram .........................................
132
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : System Description .....................................
133
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Component Part Location ...........................
138
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Component Description ..............................
141
PLASMACLUSTER SYSTEM ..........................142
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
142
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : System Diagram .........................................
142
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : System Description .....................................
142
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Component Part Location ...........................
143
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Component Description ..............................
144
MODE DOOR CONTROL SYSTEM ................145
System Diagram ....................................................145
System Description ................................................145
AIR MIX DOOR CONTROL SYSTEM .............147
System Diagram ....................................................147
System Description ................................................147
INTAKE DOOR CONTROL SYSTEM .............149
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM ...................................................................
149
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : System Diagram ..................................
149
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : System Description ..............................
149
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
150
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : System Diagram .........................................
150
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : System Description .....................................
150
BLOWER MOTOR CONTROL SYSTEM ........152
System Diagram ....................................................152
System Description ................................................152
MAGNET CLUTCH CONTROL SYSTEM .......154
System Diagram ....................................................154
System Description ................................................154
CAN COMMUNICATION SYSTEM .................155
System Description ................................................155
DIAGNOSIS SYSTEM (HVAC) .......................156
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM ...................................................................
156
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : CONSULT-III Function .........................
156
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
159
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : CONSULT-III Function ................................
159
COMPONENT DIAGNOSIS .......................164
U1000 CAN COMM CIRCUIT .........................164
Description .............................................................164

HAC-4
DTC Logic ..............................................................164
Diagnosis Procedure ............................................164
U1010 CONTROL UNIT (CAN) .......................165
Description .............................................................165
DTC Logic ..............................................................165
Diagnosis Procedure .............................................165
B257B, B257C AMBIENT SENSOR ...............166
Description .............................................................166
DTC Logic ..............................................................166
Diagnosis Procedure .............................................167
Component Inspection ...........................................168
B2578, B2579 IN-VEHICLE SENSOR .............169
Description .............................................................169
DTC Logic ..............................................................169
Diagnosis Procedure .............................................170
Component Inspection ...........................................171
B2581, B2582 INTAKE SENSOR ....................172
Description .............................................................172
DTC Logic ..............................................................172
Diagnosis Procedure .............................................172
Component Inspection ...........................................173
B262A, B262B, B2657, B2658 GAS SENSOR .175
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
175
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Description ..................................................
175
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : DTC Logic ...................................................
175
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Diagnosis Procedure ...................................
176
B2630, B2631 SUNLOAD SENSOR ...............178
Description .............................................................178
DTC Logic ..............................................................178
Diagnosis Procedure .............................................179
Component Inspection ...........................................180
B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) ................................................
181
Description .............................................................181
DTC Logic ..............................................................181
Diagnosis Procedure .............................................182
B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) ................................................
183
Description .............................................................183
DTC Logic ..............................................................183
Diagnosis Procedure .............................................184
B2636, B2637, B2638, B2639, B2654, B2655
MODE DOOR MOTOR ....................................
185
Description .............................................................185
DTC Logic ..............................................................185
Diagnosis Procedure .............................................186
B263D B263E, B263F, B2656 INTAKE DOOR
MOTOR .............................................................
188
Description ............................................................188
DTC Logic .............................................................188
Diagnosis Procedure .............................................189
POWER SUPPLY AND GROUND CIRCUIT ....191
A/C AUTO AMP. ......................................................191
A/C AUTO AMP. : Diagnosis Procedure ...............191
A/C AUTO AMP. ...............................................192
Description ............................................................192
Component Function Check .................................192
Diagnosis Procedure .............................................192
BLOWER MOTOR ............................................193
Description ............................................................193
Component Function Check ................................193
Diagnosis Procedure .............................................193
Component Inspection ..........................................196
MAGNET CLUTCH ...........................................197
Description ............................................................197
Component Function Check .................................197
Diagnosis Procedure .............................................197
IONIZER ............................................................199
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM .........................................................................
199
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Description .................................................
199
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Component Function Check .......................
199
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Diagnosis Procedure ..................................
199
ECU DIAGNOSIS ......................................202
A/C AUTO AMP. ...............................................202
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM ..................................................................
202
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Reference Value .................................
202
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Wiring Diagram - AIR CONDITIONER
CONTROL SYSTEM - ..........................................
203
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Fail-Safe ..............................................
211
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : DTC Inspection Priority Chart ...........
212
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : DTC Index ...........................................
212
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM .........................................................................
213
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Reference Value .........................................
213

HAC-14
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
COMPRESSOR CONTROL FUNCTION
PASSENGER COMPARTMENT
1. Refrigerant pressure sensor 2. Compressor (magnet clutch) 3. Ambient sensor
JPIIA0992ZZ

COMPRESSOR CONTROL FUNCTION
HAC-15
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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Component’s RoleINFOID:0000000003846300
1. Intake door motor 2. Air mix door motor (passenger side) 3. Air mix door motor (driver side)
4. Mode door motor 5. Sunload sensor 6. In-vehicle sensor
7. A/C auto amp. 8. Intake sensor 9. Blower motor
JPIIA0997ZZ

HAC-16
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
COMPRESSOR CONTROL FUNCTION
Component Description
Refrigerant pressure sensorEC-348, "
Description"
CompressorHAC-72, "Description"
Ambient sensorHAC-44, "Description"
Intake door motorHAC-63, "Description"
Air mix door motor (driver side)HAC-56, "Description"
Air mix door motor (passenger side)HAC-58, "Description"
Mode door motorHAC-60, "Description"
Sunload sensorHAC-53, "Description"
In-vehicle sensorHAC-47, "Description"
A/C auto amp. HAC-67, "Description"
Intake sensorHAC-50, "Description"
Blower motorHAC-68, "Description"

AUTOMATIC AIR CONDITIONER SYSTEM
HAC-17
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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AUTOMATIC AIR CONDITIONER SYSTEM
System DiagramINFOID:0000000003846301
CONTROL SYSTEM
The control system consists of input sensors, switches, the A/C auto amp. (microcomputer) and outputs. The
relationship of these components is as shown in the figure below:
System DescriptionINFOID:0000000003846302
CONTROL OPERATION
Display
The operation status of the system is displayed on the screen.
JPIIA0878GB
JPIIA0879ZZ