Nissan Teana J32. Manual - part 698

DIAGNOSIS SYSTEM (HVAC)

HAC-161

< FUNCTION DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

*: 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

[

Ambient sensor value converted from ambient sensor signal received from ambient
sensor

IN-VEH TEMP

[

In-vehicle sensor value converted from in-vehicle sensor signal received from in-vehi-
cle sensor

INT TEMP SEN

[

Intake sensor value converted from intake sensor signal received from intake sensor

SUNLOAD SEN

[w/m

]

Sunload sensor value converted from sunload sensor signal received from sunload
sensor

AMB SEN CAL

[

Ambient sensor value calculated by A/C auto amp.

IN-VEH CAL

[

In-vehicle sensor value calculated by A/C auto amp.

INT TEMP CAL

[

Intake sensor value calculated by A/C auto amp.

SUNL SEN CAL

[w/m

]

Sunload sensor value calculated by A/C auto amp.

FAN DUTY

[%]

Duty ratio of blower motor judged by A/C auto amp.

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

[

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

20% FRE

FRE

Air mix door position
(driver & passenger
side)

FULL COLD

FULL HOT

Blower motor duty ratio

37%

91%

65%

91%

Compressor (Magnet
clutch)

OFF

Ionizer

OFF

Ion mode

ION

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]

HAC

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.

HAC-116, "WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM : Gas
Sensor Sensitivity Ad-
justment Function (With
Intelligent Air Conditioner
System)"

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.

HAC-116, "WITH INTEL-
LIGENT AIR CONDI-
TIONER SYSTEM :
Clean Switch Interlock-
ing Movement Change
Function (With Intelligent
Air Conditioner System)"

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

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Turn ignition switch ON and wait for 2 or more seconds.

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