Nissan Teana J32. Manual — part 698
DIAGNOSIS SYSTEM (HVAC)
HAC-161
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
*: 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 FAIL
When 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 FAIL
When the malfunctioning door position
is detected at B/L2 position
B2656
BTC FRE DOOR FAIL
When 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%
DTC
Items
(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.
XM
Target 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 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 TEST
The 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
Test item
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 CORRECT
If 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 SET
In 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
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
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 FUNCTION
Gas sensor sensitivity can be changed when smell of exhaust gas
introduced in the automatic re-circulation control differs from cus-
tomer’s sensible smell.
CLEAN SWITCH INTERLOCKING
MOVEMENT CHANGE FUNCTION
Operation 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.
Work item
Description
Reference
HAC-164
< COMPONENT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000003884734
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with two
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-13, "How to Use CAN Communication Signal Chart"
.
DTC Logic
INFOID:0000000003884735
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003884736
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1.
Turn ignition switch ON and wait for 2 or more seconds.
2.
Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Perform trouble diagnosis for the CAN communication system. Refer to
.
NO
>> Perform the intermittent malfunction diagnosis. Refer to
GI-35, "Intermittent Incident"
DTC
Items
(CONSULT-III screen terms)
Diagnostic item is detected when...
Possible cause
U1000
CAN COMM CIRCUIT
When A/C auto amp. is not transmitting
or receiving CAN communication signal
for 2 or more seconds.
CAN communication system
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