Condition NISSAN TEANA 2008 Service Manual

HAC-1
VENTILATION, HEATER & AIR CONDITIONER
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SECTION HAC
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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-2
DTC Logic ...............................................................53
Diagnosis Procedure ..............................................54
Component Inspection ............................................55
B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) ..................................................
56
Description ..............................................................56
DTC Logic ...............................................................56
Diagnosis Procedure ..............................................57
B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) ..................................................
58
Description ..............................................................58
DTC Logic ...............................................................58
Diagnosis Procedure ..............................................59
B2636, B2637, B2638, B2639, B2654, B2655
MODE DOOR MOTOR ......................................
60
Description ..............................................................60
DTC Logic ...............................................................60
Diagnosis Procedure ..............................................61
B263D B263E, B263F, B2656 INTAKE DOOR
MOTOR ..............................................................
63
Description ..............................................................63
DTC Logic ...............................................................63
Diagnosis Procedure ..............................................64
POWER SUPPLY AND GROUND CIRCUIT .....65
A/C AUTO AMP. .......................................................65
A/C AUTO AMP. : Diagnosis Procedure ................65
A/C CONTROL ..........................................................65
A/C CONTROL : Diagnosis Procedure ...................65
A/C DISPLAY ............................................................66
A/C DISPLAY : Diagnosis Procedure .....................66
A/C AUTO AMP. ................................................67
Description ..............................................................67
Component Function Check ...................................67
Diagnosis Procedure ..............................................67
BLOWER MOTOR .............................................68
Description ..............................................................68
Component Function Check .................................68
Diagnosis Procedure ..............................................68
Component Inspection ............................................71
MAGNET CLUTCH ............................................72
Description ..............................................................72
Component Function Check ...................................72
Diagnosis Procedure ..............................................72
A/C CONTROL SIGNAL CIRCUIT ....................74
Diagnosis Procedure ..............................................74
ECU DIAGNOSIS ........................................75
A/C AUTO AMP. ................................................75
Reference Value .....................................................75
Wiring Diagram - AIR CONDITIONER CONTROL
SYSTEM - ...............................................................
77
Fail-Safe ..................................................................84
DTC Inspection Priority Chart ...............................85
DTC Index ...............................................................85
SYMPTOM DIAGNOSIS ............................87
AIR CONDITIONER CONTROL ........................87
Diagnosis Chart By Symptom .................................87
INSUFFICIENT COOLING .................................88
Description ..............................................................88
Inspection procedure ..............................................88
INSUFFICIENT HEATING .................................91
Description ..............................................................91
Inspection procedure ..............................................91
NOISE ................................................................94
Description ..............................................................94
Inspection procedure ..............................................94
MEMORY FUNCTION DOES NOT OPERATE ...96
Description ..............................................................96
Inspection procedure ..............................................96
PRECAUTION ............................................97
PRECAUTIONS .................................................97
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
97
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................
97
Precaution for Procedure without Cowl Top Cover ...98
Precautions For Xenon Headlamp Service .............98
Working with HFC-134a (R-134a) ...........................98
General Refrigerant Precaution ..............................99
Refrigerant Connection ...........................................99
Service Equipment ................................................101
COMPRESSOR ................................................104
General Precautions .............................................104
FLUORESCENT LEAK DETECTOR ................105
General Precautions .............................................105
WITH 7 INCH DISPLAY
BASIC INSPECTION .................................
106
DIAGNOSIS AND REPAIR WORKFLOW ........106
Work Flow .............................................................106
INSPECTION AND ADJUSTMENT ..................108
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM ..................................................................
108
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Description & Inspection .....................
108
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Temperature Setting Trimmer .............
110

HAC-3
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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-5
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TEM : Wiring Diagram - AIR CONDITIONER
CONTROL SYSTEM - ...........................................
215
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Fail-Safe .....................................................
223
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : DTC Inspection Priority Chart ..................
224
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : DTC Index ..................................................
224
SYMPTOM DIAGNOSIS ............................226
AIR CONDITIONER CONTROL .......................226
Diagnosis Chart By Symptom ...............................226
PLASMACLUSTER SYSTEM DOES NOT OP-
ERATE ..............................................................
227
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
227
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Description ..................................................
227
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Inspection procedure ..................................
227
INSUFFICIENT COOLING ...............................228
Description ............................................................228
Inspection procedure .............................................228
INSUFFICIENT HEATING ................................231
Description ............................................................231
Inspection procedure .............................................231
NOISE ..............................................................234
Description .............................................................234
Inspection procedure .............................................234
MEMORY FUNCTION DOES NOT OPERATE .236
Description .............................................................236
Inspection procedure .............................................236
PRECAUTION ............................................237
PRECAUTIONS ...............................................237
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
237
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .................................
237
Precaution for Procedure without Cowl Top Cover ..238
Precautions For Xenon Headlamp Service ...........238
Working with HFC-134a (R-134a) .........................238
General Refrigerant Precaution .............................239
Refrigerant Connection ..........................................239
Service Equipment ................................................241
COMPRESSOR ...............................................244
General Precautions ..............................................244
FLUORESCENT LEAK DETECTOR ..............245
General Precautions ..............................................245

HAC-6
< BASIC INSPECTION >[WITHOUT 7 INCH DISPLAY]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000003846290
OVERALL SEQUENCE
*1: Refer to HAC-85, "DTC Index".
*2: Refer to HAC-87, "
Diagnosis Chart By Symptom".
DETAILED FLOW
1.OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.VERIFY SYMPTOM
Verify the symptom with operational check based on the information obtained from the customer. Refer to
HAC-8, "
Description & Inspection".
>> GO TO 3.
JSIIA0943GB

HAC-8
< BASIC INSPECTION >[WITHOUT 7 INCH DISPLAY]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
Description & InspectionINFOID:0000000003846291
DESCRIPTION
The purpose of the operational check is to check that the individual system operates normally.
INSPECTION PROCEDURE
1.CHECK MEMORY FUNCTION
1. Start the engine.
2. Operate the temperature control switch (driver side) and raise the temperature setting to 32°C (90°F).
3. Press the OFF switch.
4. Turn the ignition switch OFF.
5. Turn the ignition switch ON.
6. Press the AUTO switch.
7. Check that the temperature setting before turning the ignition switch OFF is stored.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Memory function malfunction: HAC-96, "
Inspection procedure".
2.CHECK BLOWER MOTOR SPEED
1. Start the engine.
2. Operate the fan control dial. Check that the fan speed changes. Check the operation for all fan speeds.
3. Set the fan speed to speed 7.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Blower motor system malfunction: HAC-68, "
Diagnosis Procedure".
3.CHECK DISCHARGE AIR
1. Press the MODE switch and the DEF switch.
2. Each position indicator should change shape.
3. Confirm that discharge air comes out according to the air distribution table. Refer to HAC-17, "
System
Description".
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and the intake door position is at
the FRE when DEF is selected.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Mode door system malfunction: HAC-61, "
Diagnosis Procedure". Conditions : Engine running at normal operating temperature
JPIIA0877GB

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

INSPECTION AND ADJUSTMENT
HAC-11
< BASIC INSPECTION >[WITHOUT 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, trimmer operation is cancelled. Wind distribution rate set becomes that of initial condition.
Inlet Port Memory Function (FRE)INFOID:0000000003846294
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.
Inlet Port Memory Function (REC)INFOID:0000000003846295
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.
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)

COMPRESSOR CONTROL FUNCTION
HAC-13
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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Fail-SafeINFOID:0000000003901219
FAIL-SAFE FUNCTION
If a communication error exists between the A/C auto amp. and A/C control for 30 seconds or longer, air con-
ditioner is controlled under the following conditions:
Component Part LocationINFOID:0000000003846299
ENGINE COMPARTMENT
Compressor : ON
Air outlet : AUTO
Air inlet : FRE (Fresh)
Blower fan speed : AUTO
Set temperature : Setting before communication error occurs