2014 NISSAN TEANA air conditioning

SYSTEMEC-573
< SYSTEM DESCRIPTION > [VQ35DE]
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AIR CONDITIONING CUT CONTROL : System DescriptionINFOID:0000000009462517
SYSTEM DIAGRAM
*1: Automatic air conditioning system
*2: Manual air conditioning system
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: Automatic air conditioning system
*3: Manual air conditioning system
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned OFF.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
JSBIA2685GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed
*1
Air conditioner
cut control IPDM E/R
↓
Air conditioner relay
↓
Compressor
Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*1
Refrigerant pressure sensor Refrigerant pressure
Power steering control module EPS operation signal
CAN communi-
cation line
Combination meter Vehicle speed signal
A/C auto amp.
*2• A/C ON signal
• Blower fan ON signal
BCM
*3
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

SYSTEMEC-575
< SYSTEM DESCRIPTION > [VQ35DE]
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• More than 2 switches at ASCD steer
ing switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed
• Selector lever is in the N, P, R position
• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
• TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to t he normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
• Malfunction for some self-diagnoses regarding ASCD control: SET indicator will blink quickly.
If MAIN switch is turned to OFF while ASCD is acti vated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will maintain the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed afte r cancel operation other than pressing MAIN switch
is performed, vehicle speed will return to last set s peed. To resume vehicle set speed, vehicle condition must
meet following conditions.
• Brake pedal is released
• A/T selector lever is in the P and N positions
• Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
COOLING FAN CONTROL
COOLING FAN CONTROL : System DescriptionINFOID:0000000009462519
SYSTEM DIAGRAM
Automatic Air Conditioning System
JSBIA1589GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-576
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
Manual Air Conditioning System
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM via the CAN communication line.
*3: Automatic air conditioning system
*4: Manual air conditioning system
SYSTEM DESCRIPTION
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF].
JSBIA0321GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
Piston position
Cooling fan
control IPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Engine coolant temperature sensor Engine coolant temperature
Refrigerant pressure sensor Refrigerant pressure
Battery Battery voltage*
1
Combination meter
Vehicle speed signal*2
A/C auto amp.*3• A/C ON signal
• Blower fan ON signal
BCM
*4
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

SYSTEMEC-581
< SYSTEM DESCRIPTION > [VQ35DE]
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SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydr
ocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accompli shed by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into t he EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not oper ating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve al so shuts off the vapor purge line during decelerating and
idling.
THROTTLE CONTROL
THROTTLE CONTROL : System DescriptionINFOID:0000000009462522
SYSTEM DIAGRAM
Automatic Air Conditioning System
PBIB1631E
JSBIA2394GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-582
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
Manual Air Conditioning System
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status
by the signals of engine speed and battery voltage.
*2: Automatic air conditioning system
*3: Manual air conditioning system
SYSTEM DESCRIPTION
ECM calculates the value of signal transmitted from t he accelerator pedal and activates the throttle valve by
transmitting a control signal to the electric throttle c ontrol actuator. This allows the optimum throttle angle and
improves drivability and fuel consumption. In addition, ECM learns the fully closed position every time when
the ignition switch is turned OFF to improv e the accuracy in throttle valve position.
When a malfunction occurs in the throttle control system , the throttle valve is closed by the return spring and
maintains the minimum engine speed by holding a slightly opened condition which is close to the fully opened
condition. This allows the securing of brake syste m, power steering system, and electric system and the
ensuring of the safety.
INTAKE VALVE TIMING CONTROL
JSBIA1917GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed
*1
Throttle controlElectric throttle control
actuator
Engine coolant temperature sensor Engine coolant temperature
Mass air flow sensor Amount of intake air
Intake air temperature sensor Intake air temperature
Accelerator pedal position sensor Accelerator pedal position
Ignition switch Start signal and ignition OFF
Combination meter CAN communi-
cation Vehicle speed signal
A/C auto amp.
*2CAN communi-
cation • A/C ON signal
• Blower fan ON signal
BCM
*3
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

IDLE AIR VOLUME LEARNINGEC-683
< BASIC INSPECTION > [VQ35DE]
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IDLE AIR VOLUME LEARNING
DescriptionINFOID:0000000009462557
Idle Air Volume Learning is a function of ECM to learn
the idle air volume that keeps engine idle speed within
the specific range. It must be performed under the following conditions:
• Each time the electric throttle c ontrol actuator or ECM is replaced.
• Idle speed or ignition timing is out of the specification.
Work ProcedureINFOID:0000000009462558
1.PRECONDITIONING
Check that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
• Battery voltage: More than 12.9 V (At idle)
• Engine coolant temperature: 70 - 100 °C (158 - 212 °F)
• Selector lever position: P or N
• Electric load switch: OFF
(Air conditioner, head lamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the head lamp will not illuminate.
• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- With CONSULT: Drive vehicle until “ATF TEMP SEN” in “DATA MONITOR” mode of “CVT” system indicates
less than 0.9 V.
- Without CONSULT: Drive vehicle for 10 minutes.
Will CONSULT be used?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM IDLE AIR VOLUME LEARNING
With CONSULT
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-681, "Work Procedure"
.
2. Perform Throttle Valve Closed Position Learning. Refer to EC-682, "Work Procedure"
.
3. Start engine and warm it up to normal operating temperature.
4. Select “IDLE AIR VOL LEA RN” in “WORK SUPPORT” mode.
5. Touch “START” and wait 20 seconds.
Is
“CMPLT” displayed on CONSULT screen?
YES >> GO TO 4.
NO >> GO TO 5.
3.PERFORM IDLE AIR VOLUME LEARNING
Without CONSULT
NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the di agnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-681, "Work Procedure"
.
2. Perform Throttle Valve Closed Position Learning. Refer to EC-682, "Work Procedure"
.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Confirm that accelerator pedal is fully releas ed, turn ignition switch ON and wait 3 seconds.
6. Repeat the following procedure quickly 5 times within 5 seconds.
- Fully depress the accelerator pedal.
- Fully release the accelerator pedal.
7. Wait 7 seconds, fully depress the accelerator pedal for approx. 20 seconds until the MIL stops blinking
and turns ON.
8. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-719
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0031, P0032, P0051, P0052
A/F SENSOR 1 HEATER
DTC LogicINFOID:0000000009462583
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-719, "Diagnosis Procedure".
NG >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462584
1.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY
1. Disconnect air fuel ratio (A/F) sensor 1 harness connector.
2. Turn ignition switch ON.
3. Check the voltage between A/F sensor 1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0031 Air fuel ratio (A/F) sensor
1 heater (bank 1) control
circuit low The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the A/F sensor 1 heater.) • Harness or connectors
(The A/F sensor 1 heater circuit is
open or shorted.)
• A/F sensor 1 heater
P0032 Air fuel ratio (A/F) sensor
1 heater (bank 1) control
circuit high The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the A/F sensor 1 heater.) • Harness or connectors
(The A/F sensor 1 heater circuit is
shorted.)
• A/F sensor 1 heater
P0051 Air fuel ratio (A/F) sensor
1 heater (bank 2) control
circuit low The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the A/F sensor 1 heater.) • Harness or connectors
(The A/F sensor 1 heater circuit is
open or shorted.)
• A/F sensor 1 heater
P0052 Air fuel ratio (A/F) sensor
1 heater (bank 2) control
circuit high The current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the A/F sensor 1 heater.) • Harness or connectors
(The A/F sensor 1 heater circuit is
shorted.)
• A/F sensor 1 heater
DTC A/F sensor 1
Ground Voltage
Bank Connector Terminal
P0031, P0032 1 F12 4 Ground Battery voltage
P0051, P0052 2 F61 4
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0075, P0081 IVT CONTROL SOLENOID VALVE
EC-725
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0075, P0081 IVT CONTROL SOLENOID VALVE
DTC LogicINFOID:0000000009462589
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-725, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462590
1.CHECK INTAKE VALVE TIMING CONTRO L SOLENOID VALVE POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect intake valve timing (IVT) control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check the voltage between intake valve timing control solenoid valve harness connector and ground with CONSULT or tester.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
2.CHECK INTAKE VALVE TIMING CONTROL SOLENO ID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between intake valve timi ng control solenoid valve harness connector and ECM har-
ness connector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0075 Intake valve timing control so-
lenoid valve (bank 1) circuit An improper voltage is sent to the ECM
through intake valve timing control solenoid
valve. • Harness or connectors
(Intake valve timing control solenoid valve
circuit is open or shorted.)
• Intake valve timing control solenoid valve
P0081 Intake valve timing control so-
lenoid valve (bank 2) circuit
DTC IVT control solenoid valve
Ground Voltage
Bank Connector Terminal
P0075 1 F67 2 Ground Battery voltage
P0081 2 F66 2
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM