Nissan Quest E52. Instruction — part 729
HAC-46
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
OPERATION
NOTE:
The following switches are not necessary for ACCS (Advanced Climate Control System) operation.
Switch name
Function
AUTO intake switch
• Automatic intake control (exhaust gas/outside odor detecting mechanism) (switch indicator) changes
between ON
⇔
OFF each time when AUTO intake switch is pressed while front blower motor is acti-
vated.
• Front air conditioning becomes the following status when AUTO intake switch is turned ON.
- Air inlet: Recirculation [After approximately 5 minutes, air inlet is switched to automatic intake control
(exhaust gas/outside odor detecting mechanism).]
- A/C switch: ON
• Front air conditioning becomes the following status when AUTO intake switch is turned OFF.
- Air inlet: Fresh air intake
- A/C switch: Stays ON
NOTE:
• Interlocking condition of A/C switch can be changed. Refer to
HAC-85, "AUTO Intake Switch Interlock-
.
• AUTO intake switch operation is not accepted when the following status.
- Air outlet: D/F or DEF
- Ambient temperature: 0
°
C (32
°
F) or less
Intake switch
Refer to
CONDITIONING SYSTEM : Switch Name and
Function"
Temperature control
switch (driver side)
MODE switch
ON·OFF switch
AUTO switch
Fan switch
A/C switch
DUAL switch
Temperature control
switch (passenger
side)
DEF switch
REAR switch
Refer to
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
HAC-47
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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DIAGNOSIS SYSTEM (A/C AUTO AMP.)
Description
INFOID:0000000009652529
Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings
using diagnosis function of each control unit.
On Board Diagnosis Function
INFOID:0000000009652530
ON BOARD DIAGNOSIS ITEM
On board diagnosis function of A/C auto amp. consists of steps 1 to 8. Diagnosis for sensors, motors, and etc.
can be performed by each step. System settings can be also changed by each step.
ECU
Diagnostic item
(CONSULT)
A/C auto amp.
On board diagnosis function
BCM
BCM-AIR CONDITIONER
Self Diagnostic Result
Data Monitor
ECM
ENGINE
Self Diagnostic Result
Data Monitor
IPDM E/R
IPDM E/R
Self Diagnostic Result
Data Monitor
Auto active test
Diagnosis item
Diagnosis content
Diagnosis part
STEP 1:
Indicator check
Switch indicator and display indication are
checked.
• Front A/C control (A/C auto amp.)
• Rear A/C control
STEP 2:
Sensor / door motor diagnosis
The circuit diagnoses of each sensor and
air mix door motor are performed. A/C
auto amp. indicates the result on the dis-
play.
• Ambient sensor
• Front in-vehicle sensor
• Rear in-vehicle sensor
• Intake sensor
• Sunload sensor
• Front air mix door motor (driver side)
• Front air mix door motor (passenger side)
• Rear air mix door motor
• Exhaust gas/outside odor detecting sen-
sor
• Exhaust gas/outside odor detecting sen-
sor harness
STEP 3:
Door motor diagnosis
The circuit diagnoses of front mode door
motor, rear mode door motor and intake
door motor are performed. A/C auto amp.
indicates the result on the display.
• Front mode door motor
• Rear mode door motor
• Intake door motor
STEP 4:
Operation check
Operational check of each part is per-
formed.
• Front mode door motor
• Intake door motor
• Front air mix door motor (driver side)
• Front air mix door motor (passenger side)
• Front blower motor
• Compressor
• Rear mode door motor
• Rear air mix door motor
• Rear blower motor
• Ionizer
• Plasmacluster
™
ion operation status)
STEP 5-1:
Each sensor recognition temperature
check
Each sensor recognition temperature is in-
dicated on the display.
• Ambient sensor
• Front In-vehicle sensor
• Intake sensor
• Rear in-vehicle sensor
HAC-48
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
*: With ACCS (Advanced Climate Control System)
METHOD OF STARTING
Self-diagnosis Mode Entry
The self-diagnosis is started by pressing the ON·OFF switch for 5 seconds or more within 10 seconds after
starting engine.
NOTE:
If battery voltage drops below 12 V during diagnosis STEP-3, door motor speed becomes slower and as a
result, the system may generate an error even when operation is normal. Start engine before performing this
diagnosis to avoid this.
Changes of Step up and Step down
• The changes of STEP 1 – 5 can be performed by pressing the temperature control switch (driver side) of
front A/C control.
• The change of STEP 5 – 8 can be performed by pressing the fan switch of front A/C control during the con-
dition of STEP 5.
Self-diagnosis Cancellation
By pressing AUTO switch of front A/C control or turning ignition switch OFF, the self-diagnosis is canceled.
STEP 1: INDICATOR CHECK
Description
Front A/C control (switch indicator and display) and rear A/C control (display) indication are checked.
Normal: All switch indicator and display indication are turned ON.
Malfunction: Malfunctioning part indicator is not turned ON.
STEP 2: SENSOR / DOOR MOTOR DIAGNOSIS
Description
When STEP 2 is selected, “2” is indicated on the display, and then self-diagnosis result is indicated.
Normal: “20” is displayed.
Malfunction: Corresponding code number displayed. (When short-circuit error, A/C switch indicator turns ON)
NOTE:
Corresponding code Nos. indicates 1 second each if two or more sensors and door motors malfunction.
STEP 5-2:
EEPROM system diagnosis
A/C auto amp. EEPROM memory function
error detected.
A/C auto amp.
STEP 6-1:
Temperature setting trimmer (front/rear)
Setting change of temperature setting
trimmer (front/rear) can be performed.
—
STEP 6-2:
Foot position setting trimmer
Setting change of foot position setting
trimmer can be performed.
—
STEP 6-3:
Inlet port memory function
Setting change of inlet port memory func-
tion can be performed.
—
STEP 7:
Exhaust gas/outside odor detecting sen-
sor sensitivity adjustment function
*
Setting change of exhaust gas/outside
odor detecting sensor sensitivity adjust-
ment function can be performed.
—
STEP 8:
AUTO intake switch interlocking move-
ment change function
*
Setting change of AUTO intake switch in-
terlocking movement change function can
be performed.
—
Diagnosis item
Diagnosis content
Diagnosis part
JMIIA1785GB
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
HAC-49
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
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Self-diagnosis Result
: A/C switch indicator
*1: Perform the self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sun-
load sensor, otherwise code No. “25” indicates despite that sunload sensor is functioning normally.
*2: The following display pattern will appear if front air mix door motor (driver side) harness connector is dis-
connected:
“26”
→
“26”
→
Return to “26”.
*3: With ACCS (Advanced Climate Control System)
NOTE:
• When ambient sensor has the malfunction of open circuit, the sensor judges that ambient temperature is
extremely cold, and controls the in vehicle temperature to warmly.
• Inspect door motor circuit, when all door motor system malfunction are detected. Refer to
STEP 3: DOOR MOTOR DIAGNOSIS
Description
“3” is indicated on the display, and then self-diagnosis result is indicated.
The check of door motor is performed by A/C auto amp. transmitting output signal to each door motor.
Normal: “30” is displayed.
Malfunction: Corresponding code number displayed.
NOTE:
Corresponding code Nos. indicates 1 seconds each if two or more mode or intake door motors malfunction.
Self-diagnosis Result
Code No.
Corresponding sensor or
door motor
Malfunctioning judgment condition
Reference
Open
Short
21 /
21
Ambient sensor
−
44
°
C (
−
47
°
F) or less
100
°
C (212
°
F) or more
HAC-94, "Diagnosis Proce-
dure"
22 /
22
Front in-vehicle sensor
−
44
°
C (
−
47
°
F) or less
100
°
C (212
°
F) or more
HAC-96, "Diagnosis Proce-
dure"
23 /
23
Rear in-vehicle sensor
−
44
°
C (
−
47
°
F) or less
100
°
C (212
°
F) or more
HAC-102, "Diagnosis Proce-
dure"
24 /
24
Intake sensor
−
44
°
C (
−
47
°
F) or less
100
°
C (212
°
F) or more
HAC-98, "Diagnosis Proce-
dure"
25 /
25
Sunload sensor
*1
65 W/m
2
or less
2832 W/m
2
or more
HAC-100, "Diagnosis Proce-
dure"
26 /
26
Front air mix door motor
(driver side)
*2
PBR angle 5% or less
PBR angle 95% or more
HAC-106, "Diagnosis Proce-
dure"
27 /
27
Front air mix door motor
(passenger side)
*2
PBR angle 5% or less
PBR angle 95% or more
HAC-108, "Diagnosis Proce-
dure"
28 /
28
Rear air mix door motor
*2
PBR angle 5% or less
PBR angle 95% or more
HAC-114, "Diagnosis Proce-
dure"
29 /
29
Exhaust gas/outside odor
detecting sensor
*3
Duty ratio 90% or more
Duty ratio 10% or less
HAC-114, "Diagnosis Proce-
dure"
SJIA1782E
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