ignition NISSAN TEANA 2014 Service Manual

PRECAUTIONSHA-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951784
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for WorkINFOID:0000000009463909
• When removing or disassembling each component, be ca reful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.
• When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a shop cloth or vinyl tape to protect it.
• Protect the removed parts with a shop cloth and prevent them from being dropped.
• Replace a deformed or damaged clip.
• If a part is specified as a non-reusabl e part, always replace it with a new one.
• Be sure to tighten bolts and nuts securely to the specified torque.
• After installation is complete, be sure to check that each part works properly.
• Follow the steps below to clean components:
- Water soluble dirt:
• Dip a soft cloth into lukewarm water, wring the water out of the cloth and wipe the dirty area.
• Then rub with a soft, dry cloth.
-Oily dirt:
• Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%) and wipe the dirty area.
• Then dip a cloth into fresh water, wring the water out of the cloth and wipe the detergent off.
• Then rub with a soft, dry cloth.
- Do not use organic solvent such as thinner, benzene, alcohol or gasoline.
- For genuine leather seats, use a genuine leather seat cleaner.
Precaution for Workin g with HFC-134a (R-134a)INFOID:0000000009463910
WARNING:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refr igerant are not compatible. If the refrigerants
are mixed compressor failure is likely to occur. Refer to HA-21, "Leak Test"
. To determine the purity
of HFC-134a (R-134a) in the vehicle and recovery tank, use Refrigerant Recovery/Recycling Recharg-
ing equipment and Refrigerant Identifier.
Revision: November 20132014 Altima NAM

HA-16
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
>> GO TO 2.
2.SYMPTOM CHECK
Verify symptoms.
>> GO TO 3.
3.CHECK FOR DTCS
With CONSULT
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3. Check DTC.
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 5.
4.PERFORM DTC DIAGNOSTIC PROCEDURE
Perform the diagnostic procedure for the detected DTC. Refer to HAC-30, "DTC Inspection Priority Chart"
.
>> GO TO 7.
5.OPERATION CHECK
Perform the operation check. Refer to HAC-48, "Work Procedure"
(automatic A/C) or HAC-140, "Work Proce-
dure" (manual A/C).
>> GO TO 6.
6.SYMPTOM DIAGNOSIS
Check the symptom diagnosis table. Refer to HA-17, "Symptom Table"
.
>> GO TO 8.
7.VERIFY REPAIR.
With CONSULT
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3. Check DTC.
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 8.
8.PERFORM FINAL OPERATION CHECK
Perform the operation check. Refer to HAC-48, "Work Procedure"
(automatic A/C) or HAC-140, "Work Proce-
dure" (manual A/C).
Does it operate normally?
YES >> Inspection End.
NO >> GO TO 2.
Revision: November 20132014 Altima NAM

PRECAUTIONSHAC-5
< PRECAUTION > [AUTOMATIC AIR CONDITIONER]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951773
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for WorkINFOID:0000000009463086
• When removing or disassembling each component, be ca reful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.
• When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a shop cloth or vinyl tape to protect it.
• Protect the removed parts with a shop cloth and prevent them from being dropped.
• Replace a deformed or damaged clip.
• If a part is specified as a non-reusabl e part, always replace it with a new one.
• Be sure to tighten bolts and nuts securely to the specified torque.
• After installation is complete, be sure to check that each part works properly.
• Follow the steps below to clean components:
- Water soluble dirt:
• Dip a soft cloth into lukewarm water, wring the water out of the cloth and wipe the dirty area.
• Then rub with a soft, dry cloth.
-Oily dirt:
• Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%) and wipe the dirty area.
• Then dip a cloth into fresh water, wring the water out of the cloth and wipe the detergent off.
• Then rub with a soft, dry cloth.
- Do not use organic solvent such as thinner, benzene, alcohol or gasoline.
- For genuine leather seats, use a genuine leather seat cleaner.
Working with HFC-134a (R-134a)INFOID:0000000009463087
WARNING:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refr igerant are not compatible. If the refrigerants
are mixed compressor failure is likely to occur. Refer to HA-25, "Inspection"
. To determine the purity
of HFC-134a (R-134a) in the vehicle and recovery tank, use Refrigerant Recovery/Recycling Recharg-
ing equipment and Refrigerant Identifier.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

COMPONENT PARTSHAC-11
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
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Air mix door motor RH The air mix door controls the mix of hot or cold air that enters the ventilation system. It is controlled
by the A/C auto amp. based on the position of the temperature dial. The air mix door motor RH re-
ceives position commands from the A/C auto amp. and reports actual door position back via an LCU
(Local Control Unit) installed inside the motor. Commands and responses are sent across the LIN (Lo-
cal Interconnect Network) to each motor simultaneously, with each motor having its own unique ad-
dress, thereby only responding to requests sent to its specific address. The LCU reads the door
position from a Position Balanced Resistor (PBR), also part of the motor, and returns that information
to the A/C auto amp. The LCU switches the polarity of the circuits connected to the DC motor to drive
the motor forward or backward as requested by the A/C auto amp. If the air mix door moves to a po-
sition less than 5% or more than 95% of its expected or allowed positions, the A/C auto amp. will set
a DTC.
Ambient sensor The ambient sensor measures the temperature of the air surrounding the vehicle. The sensor uses a
thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.
BCM The BCM receives the fan ON and A/C ON signals from the A/C auto amp. and sends a compressor
ON request to the ECM.
Blower motor The blower motor varies the speed at which the air flows through the ventilation system.
ECM The ECM sends a compressor ON request to the IPDM E/R based on the status of engine operation
and load as well as refrigerant pressure information. If all the conditions are met for A/C operation,
the ECM transmits the compressor ON request to the IPDM E/R. The ECM shares the refrigerant
pressure sensor signal, engine RPM, and engine coolant temperature with the A/C auto amp. via
CAN communication line.
Front blower motor relay The front blower motor relay controls the flow of current to fuse 17 and 27 in the Fuse Block (J/B).
The relay is connected directly to ground, and is energized when the ignition switch is in the ON or
START position.
Fuse Block (J/B) Located in the passenger compartment, behind the left lower IP, the Fuse Block (J/B) contains the
front blower motor relay and several fuses required for the air conditioner control system.
Intake door motor The intake door motor controls the position of the intake door. Fresh air is allowed to enter the cabin
in one position, and recirculated inside air is allowed to enter in the other position. At times the A/C
auto amp. may command partial fresh or recirculation based on evaporator or coolant temperatures.
The intake door motor receives position commands from the A/C auto amp. and reports actual door
position back via an LCU (Local Control Unit) installed inside the motor. Commands and responses
are sent across the LIN (Local Interconnect Network) to each motor simultaneously, with each motor
having its own unique address, thereby only responding to requests sent to its specific address. The
LCU reads the door position from a Position Balanced Resistor (PBR), also part of the motor, and re-
turns that information to the A/C auto amp. The LCU switches the polarity of the circuits connected to
the DC motor to drive the motor forward or backward as requested by the A/C auto amp. If the recir-
culation door moves to a position less than 5% or more than 95% of its expected or allowed positions,
the A/C auto amp. will set a DTC.
Intake sensor The intake sensor measures the temperature of the front evaporator fins. The sensor uses a ther-
mistor which is sensitive to the change in temperature. The electrical resistance of the thermistor de-
creases as temperature increases.
In-vehicle sensor In-vehicle sensor measures temperature of intake air that flows through aspirator to passenger room.
The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resis-
tance of the thermistor decreases as temperature increases.
IPDM E/R Refer to PCS-6, "RELAY CONTROL SYSTEM : System Description"
.
Mode door motor The mode door controls the direction the conditioned air passes through the ventilation system.
Through a series of levers and gears, the mode door controls the defrost door, the foot door, and the
vent door. There are 5 preset positions: VENT, B/L, FOOT, D/F, and DEF. The FOOT position can be
set to allow some airflow through to the defroster vent, or to completely block the defroster vent using
the CONSULT. The mode door motor receives position commands from the A/C auto amp. and re-
ports actual door position back via an LCU (Local Control Unit) installed inside the motor. Commands
and responses are sent across the LIN (Local Interconnect Network) to each motor simultaneously,
with each motor having its own unique address, thereby only responding to requests sent to its spe-
cific address. The LCU reads the door position from a Position Balanced Resistor (PBR), also part of
the motor, and returns that information to the A/C auto amp. The LCU switches the polarity of the cir-
cuits connected to the DC motor to drive the motor forward or backward as requested by the A/C auto
amp. The mode door has 5 expected positions and, therefore, can set up to 5 DTCs if the expected
position is not reported back to the A/C auto amp.
Component Description
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-20
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM
Temperature Control
INFOID:0000000009463100
• When ignition switch is in the ON position, A/C auto amp. always automatically controls temperatur e regardless of front air condi-
tioning operational state.
• A/C auto amp. calculates the target air mix door opening angle depending on set temperature, in-vehicle temperature, ambient
temperature, and sunload.
• Air mix door is controlled depending on the comparison of current
air mix door opening angle and target air mix door opening angle.
• Regardless of in-vehicle temperature, ambient temperature, and
sunload, air mix door is fixed at the fully cold position when set
temperature is 18.0 °C (60 °F), and at the fully hot position when set
temperature is 32.0 °C (90 °F).
Fail-safeINFOID:0000000009463101
FAIL-SAFE FUNCTION
If a communication error exists between the A/C auto amp., and the AV control unit and preset switch for 30
seconds or longer, air conditioning is controlled under the following conditions:
When ambient temperature is less than 3 °C (37 °F) and engine coolant temperature is less than 56 °C (133 °F)
When ambient temperature is 3 °C (37 °F) or more, or engine coolant temperature is 56 °C (133 °F) or more
JMIIA0731GB
Compressor : ON
Air outlet : DEF
Air inlet : FRE (Fresh air intake)
Blower fan speed : AUTO
Set temperature : Setting before communication error occurs
Compressor : ON
Air outlet : AUTO
Air inlet : 20% FRE (20% fresh air intake)
Blower fan speed : AUTO
Set temperature : Setting before communication error occurs
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-24
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
CONSULT Function (HVAC)INFOID:0000000009463103
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a di scharged battery and no-start condition.
CONSULT can display each diagnosis item us ing the diagnosis test modes as shown.
CONSULT application items
SELF-DIAGNOSTIC RESULT
Refer to HAC-31, "DTC Index".
Display Item List
Diagnosis mode Description
Self-Diagnostic Result Displays the diagnosis results judged by A/C auto amp.
Data Monitor Displays A/C auto amp. input/output data in real time.
Work support Changes the setting for each system function.
Active Test The signals used to activate each device are forcibly supplied from A/C auto amp.
ECU Identification Displays the A/C auto amp. number.
Configuration • The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing A/C auto amp.
DTC Items
(CONSULT 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
U1010 CONTROL UNIT (CAN) When detecting error during the initial
diagnosis of CAN controller of A/C auto
amp. A/C auto amp.
B257B AMB TEMP SEN (SHORT) Detected temperature at ambient sen-
sor 55 °C (131 °F) or more • Ambient sensor
• A/C auto amp.
• Harness and connector (Ambient sensor circuit is open,
or there is a short in the circuit)
B257C AMB TEMP SEN (OPEN)
Detected temperature at ambient sen-
sor −30 °C ( −22 °F) or less
B2578 IN-CAR SENSOR (OUT OF RANGE
[LOW]) Detected temperature at in-vehicle sen-
sor 55 °C (131 °F) or more • In-vehicle sensor
• A/C auto amp.
• Harness and connector (In-vehicle sensor circuit is open,
or there is a short in the circuit)
B2579
IN-CAR SENSOR (OUT OF RANGE
[HI]) Detected temperature at in-vehicle sen-
sor −30 °C ( −22 °F) or less
B2581 EVAP TEMP SEN (SHORT) Detected temperature at intake sensor
55 °C (131 °F) or more • Intake sensor
• A/C auto amp.
• Harness and connector
(Intake sensor circuit is open, or
there is a short in the circuit)
B2582 EVAP TEMP SEN (OPEN)
Detected temperature at intake sensor
− 30 °C ( −22 °F) or less
B2630
*SUNLOAD SEN (SHORT) Detected calorie at sunload sensor
1395 w/m2 (1200 kcal/m2·h) • Sunload sensor
• A/C auto amp.
• Harness and connector (Sunload sensor circuit is open,
or there is a short in the circuit)
B2631
*SUNLOAD SEN (OPEN) Detected calorie at sunload sensor 0 w/
m2 (0 kcal/m2·h)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-26
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
WORK SUPPORT
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of
WORK SUPPORT may be cancelled.
ACTIVE TEST
HVAC TEST
FAN REQ SIG [On/Off] Displays blower switch ON/OFF status transmitted to other units via CAN communica-
tion
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
PA TARGET A/TEMP Target discharge front air temperature (passenger side) judged by A/C auto amp. de-
pending on the temperature setting and the value from each sensor.
ENG COOL TEMP [ °C] Water temperature signal value received from ECM via CAN communication
VEHICLE SPEED [km/h
(mph)] Vehicle speed signal value received from meter via CAN communication
Monitor item [Unit] Description
Work item Description Reference
TEMP SET CORRECT
(Setting of difference between tem-
perature setting and control tempera-
ture) If the temperature felt by the customer is different than the airflow
temperature controlled by the temperature setting, the auto ampli-
fier control temperature can be adjusted to compensate for the
temperature setting. HAC-50, "Temperature
Setting Trimmer"
REC MEMORY SET
(REC memory function setting) • If the ignition switch is turned to the OFF position while the REC
switch is set to ON (recirculation), “With” or “Without” of the REC
switch ON (recirculation) condition can be selected.
• If “” was set, the REC switch will be ON (recirculation) when turn-
ing the ignition switch to the ON position again.
• If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again. HAC-51, "Inlet Port
Memory Function (REC)"
FRE MEMORY SET
(FRE memory function setting) • If the ignition switch is turned to the OFF position while the FRE
switch is set to ON (fresh air intake), “With” or “” of the FRE
switch ON (fresh air intake) condition can be selected.
• If “With” was set, the FRE switch will be ON (fresh air intake) when turning the ignition switch to the ON position again.
• If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again. HAC-50, "Inlet Port
Memory Function (FRE)"
BLOW SET
(Blow setting to DEF in FOOT mode) In the FOOT mode, the air blowing to the DEF can change ON/
OFF. HAC-50, "Foot Position
Setting Trimmer"
TARGET EVAPORATOR TEMP UP-
PER LIMIT SETTING Set the target evaporator upper temperature limit.
HAC-51, "Target Evapo-
rator Temp Upper Limit"
Test item Description
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.
Te s t i t e m
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Mode door position VENT VENT B/L D/F1 D/F2 DEF DEF
Intake door position REC REC 20%FRE FRE FRE FRE FRE
Air mix door position
(driver & passenger
side) FULL COLD FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-28
< ECU DIAGNOSIS INFORMATION >[AUTOMATIC AIR CONDITIONER]
A/C AUTO AMP.
ECU DIAGNOSIS INFORMATION
A/C AUTO AMP.
Reference ValueINFOID:0000000009463104
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item Condition Value/Status
AMB TEMP SEN Ignition switch ON — 22 - 131 °F ( −30 - 55 °C)
IN-VEH TEMP Ignition switch ON — 22 - 131 °F ( −30 - 55 °C)
INT TEMP SEN Ignition switch ON — 22 - 131 °F ( −30 - 55 °C)
SUNLOAD SEN Ignition switch ON — 0 - 1395 w/m
2
(0 - 1200 kcal/m2·h)
AMB SEN CAL Ignition switch ON — 22 -131 °F ( −30 - 55 °C)
IN-VEH CAL Ignition switch ON — 22 -131 °F ( −30 - 55 °C)
INT TEMP CAL Ignition switch ON — 22 -131 °F ( −30 - 55 °C)
SUNL SEN CAL Ignition switch ON — 0 - 1395 w/m
2
(0 - 1200 kcal/m2·h)
COMP REQ SIG Engine: Run at idle after
warming up A/C switch: ON
(A/C compressor operation
status) On
A/C switch: OFF Off
FAN REQ SIG Engine: Run at idle after
warming up Blower fan: ON On
Blower fan: OFF Off
FAN DUTY Engine: Run at idle after
warming up Blower fan: ON 25 - 85%
Blower fan: OFF 0%
XM Ignition switch ON — −100 - 155
PA TARGET A/TEMP Ignition switch ON — Value according to target air
flow temperature (passen-
ger side)
ENG COOL TEMP Ignition switch ON — Values according to coolant
temperature
VEHICLE SPEED Driving — Equivalent to speedometer
reading
ALIIA0579ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

A/C AUTO AMP.HAC-29
< ECU DIAGNOSIS INFORMATION > [AUTOMATIC AIR CONDITIONER]
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Te r m i n a l N o . (Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
Output
1
(L) —CAN-H Input/
Output ——
2
(B) —Ground — — —
3
(SB) Ground Battery power supply Input Ignition switch OFF Battery voltage
4
(BR) Ground TX FR Output Ignition switch ON 0 – 5 V
7
(L) Ground Ambient sensor signal Input Ignition switch ON 0 – 4.8 V
Output voltage varies with ambi- ent temperature
8
*1
(BR) Ground
Heated steering wheel
switch signal InputIgnition
switch ON Heated steer-
ing wheel
switch: While
pressing 0 V
Other than the
above 12 V
9
(G) Ground Sunload sensor signal Input Ignition switch ON 0 – 4.8 V
Output voltage varies with sun- load amount
13
(P) Ground IGN 2 Input Ignition switch ON Battery voltage
15
(Y) Ground RR DEF switch Output Defroster
switch OFF 0 V
ON 12 V
16
(G) Ground Each door motor LIN signal
Input/
Output Ignition switch ON
17
(W) GroundEach door motor power
supply Output Ignition switch ON 12 V
18
(P) Ground
Front blower motor control
signal Output• Ignition switch ON
• Front fan speed: 1st
speed (manual)
20
*1
(P) Ground
Heated steering wheel relay
control signal OutputIgnition
switch ON Within 30 sec-
onds after
turning ON
the heated
steering
switch. 0 V
Other than the
above 12 V
21
(P) —CAN-L Input/
Output ——
SJIA1453J
JSIIA0096ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-30
< ECU DIAGNOSIS INFORMATION >[AUTOMATIC AIR CONDITIONER]
A/C AUTO AMP.
*1: With heated steering wheel
DTC Inspection Priority ChartINFOID:0000000009463105
If some DTCs are displayed at the same time, perfo
rm inspections one by one based on the following priority
chart.
22
(B) —Ground — — —
23
(G) Ground Ignition power supply Input Ignition switch ON Battery voltage
24
(V) Ground RX FR Input Ignition switch ON 0 – 5 V
26
(W) — Sensor ground — — —
27
(G) Ground In-vehicle sensor signal Input Ignition switch ON 0 – 4.8 V
Output voltage varies with in-vehi-
cle temperature
28
(P) Ground Intake sensor signal Input Ignition switch ON 0 – 4.8 V
Output voltage varies with front evaporator fin temperature
35
(P) Ground RR DEF feedback Input
Defroster
switch OFF 0 V
ON 12 V
37
(B) — ACTR Ground — — —
40
(G) Ground
ECV (electrical control
valve) control signal Output• Ignition switch ON
• Active test (HVAC test):
MODE 1
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
Output
SJIA1607E
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM