2014 NISSAN TEANA engine coolant

ECM
EC-615
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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INT/V TIM (B1)
• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 30 °CA
INT/V TIM (B2) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 30 °CA
INT/V SOL(B1) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0 - 50%
INT/V SOL(B2) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0 - 50%
VIAS S/V-1 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→On → Off
VIAS S/V-2 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→On → Off
AIR COND RLY Engine: After warming up, idle the
engine Air conditioner switch: OFF Off
Air conditioner switch: ON
(Compressor operates) On
ENGINE MOUNT Engine: After warming up Below 950 rpm IDLE
Above 950 rpm TRVL
FUEL PUMP RLY • For 1 second after turning ignition switch: ON
• Engine running or cranking On
Except above Off
VENT CONT/V Ignition switch: ON Off
THRTL RELAY Ignition switch: ON On
A/F S1 HTR(B1) Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
A/F S1 HTR(B2) Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
COOLING FAN • Engine: After warming up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature: 97
°C
(206 °F) or less OFF
Engine coolant temperature: Between
98 °C (208
°F) and 99 °C (210 °F) LOW
Engine coolant temperature: Between
100 °C (212 °F) and 104 °C (219 °F) MID
Engine coolant temperature: 105 °C
(221 °F) or more HI
HO2S2 HTR (B1) Engine speed: Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load On
Engine speed: Above 3,600 rpm Off
Monitor Item Condition Values/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-623
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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(BR) 128
(GR) Intake valve timing control so-
lenoid valve (bank 2) Output[Engine is running]
• Warm-up condition
• Idle speed BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm 7 - 12 V
57
(L) 128
(GR) Heated oxygen sensor 2
(bank 1) Input[Engine is running]
Revving engine from idle to
3,000 rpm quickly after the fol-
lowing conditions are met
• Engine: after warming up
• Keeping the engine speed be- tween 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load 0 - 1.0 V
58
(L) 128
(GR) Heated oxygen sensor 2
(bank 2) Input[Engine is running]
Revving engine from idle to
3,000 rpm quickly after the fol-
lowing conditions are met
• Engine: after warming up
• Keeping the engine speed be-
tween 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load 0 - 1.0 V
59
(L) —Sensor ground
(Heated oxygen sensor 2) —— —
63
(W) 64
(P) Refrigerant pressure sensor Input [Engine is running]
• Warm-up condition
• Both A/C switch and blower
fan motor switch: ON (Com-
pressor operates) 1.0 - 4.0 V
64
(P) —Sensor ground
(Refrigerant pressure sensor) —— —
66
(G) 68
(R) Battery current sensor Input [Engine is running]
• Battery: Fully charged*
2
• Idle speed 2.6 - 3.5 V
67
(W) 68
(R) Battery temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with battery temperature.
68
(R) —Sensor ground
(Battery curre nt sensor) —— —
69
(W) 128
(GR) A/F sensor 1 (bank 1) Input [Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm 2.2 V
Output voltage varies with air fuel ratio.
70
(BR) 76
(B) Engine coolant temperature
sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine
coolant temperature.
73
(B) 128
(GR) A/F sensor 1 (bank 1) Input [Ignition switch: ON] 1.8 V
Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal name Input/
Output
JMBIA0038GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-624
< ECU DIAGNOSIS INFORMATION >[VQ35DE]
ECM
74
(V) 80
(BR) Intake air temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with intake air temperature.
75
(O) 68
(R) Sensor power supply
(Battery current sensor) — [Ignition switch: ON] 5 V
76
(B) —Sensor ground
(Engine coolant temperature
sensor, engine oil tempera-
ture sensor) —— —
77
(W) 128
(GR) A/F sensor 1 (bank 2) Input [Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm 2.2 V
Output voltage varies with air fuel ratio.
78
(G) 76
(B) Engine oil temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine
oil temperature.
80
(BR) —Sensor ground
(Mass air flow sensor, intake
air temperature sensor) —— —
81
(B) 128
(GR) A/F sensor 1 (bank 2) Input [Ignition switch: ON] 1.8 V
82
(P) 80
(BR) Mass air flow sensor Input [Engine is running]
• Warm-up condition
• Idle speed 0.9 - 1.2 V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm 1.6 - 1.9 V
83
(V) 88
(SB) Sensor power supply
[Camshaft position sensor
(PHASE) (bank 1)] — [Ignition switch: ON] 5 V
84
(SB) —Sensor ground
[Crankshaft position sensor
(POS)] —— —
85
(B) 91
(B) Knock sensor (bank 1) Input [Engine is running]
Idle speed 2.5 V*
1
86
(W) 91
(B) Knock sensor (bank 2) Input [Engine is running]
Idle speed 2.5 V*1
87
(V) 92
(SB) Sensor power supply
[Camshaft position sensor
(PHASE) (bank 2)] — [Ignition switch: ON] 5 V
88
(SB) —Sensor ground
[Camshaft position sensor
(PHASE) (bank 1)] —— —
Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal name Input/
Output
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EC-628
< ECU DIAGNOSIS INFORMATION >[VQ35DE]
ECM
DTC RELATED ITEM
Engine operating condi-
tion in fail-safe mode Detected items Remarks
Reference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cut Malfunction indicator
lamp circuit When there is an open circuit on MIL circuit, the ECM cannot warn the
driver by illuminating MIL when there is malfunction on engine control
system.
Therefore, when electrical controlled throttle and part of ECM related
diagnoses are continuously detected as NG for 5 trips, ECM warns the
driver that engine control system malfunctions and MIL circuit is open
by means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except MIL
circuit are detected and demands the driver to repair the malfunction. EC-973
DTC No. Detected items Engine operating condition in fail-safe mode
P0011
P0021 Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0101
P0102
P0103 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118 Engine coolant tempera-
ture sensor circuit Engine coolant temperature will be determined by ECM based on the following condition.
CONSULT displays the engine coolant temperature decided by ECM.
Condition Engine coolant temperature decided
(CONSULT display)
Just as ignition switch is turned ON
or START 40
°C (104 °F)
Approx 4 minutes or more after en-
gine starting 80
°C (176 °F)
Except as shown above 40 - 80
°C (104 - 176 °F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
P0196
P0197
P0198 Engine oil temperature
sensor Intake valve timing control does not function.
P0500 Vehicle speed sensor The cooling fan operates (Highest) while engine is running.
P0524 Engine oil pressure • ECM illuminates oil pressure warning lamp on the combination meter.
• Engine speed will not rise more than 4,000 rpm due to the fuel cut.
• Fail-safe is canceled when ignition switch OFF → ON.
P0605 ECM (When ECM calculation function is malfunctioning:) ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
ECM deactivates ASCD operation.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P1805 Brake switch ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-629
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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DTC Inspection Priority ChartINFOID:0000000009462544
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
P2100
P2103 Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2101 Electric th rottle control
function ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P2119 Electric thro ttle control ac-
tuator (When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is being driven, it slows down gradually because of fuel cut. After the
vehicle stops, the engine stalls.
The engine can restart in the N or P position, and engine speed will not exceed 1,000 rpm
or more.
P2122
P2123
P2127
P2128
P2138 Accelerator pedal position
sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
DTC No. Detected items Engine operating condition in fail-safe mode
Priority Detected items (DTC) Detected items (DTC)
1 U0101, U1001 CAN communication line P0101, P0102, P0103 Mass air flow sensor
P0111, P0112, P0113, P0127 Intake air temperature sensor
P0116, P0117, P0118, P0125 Engine coolant temperature sensor
P0122, P0123, P0222, P0223, P1225, P1226, P2135 Throttle position sensor
P0128 Thermostat function
P0181, P0182, P0183 Fuel tank temperature sensor
P0196, P0197, P0198 Engine oil temperature sensor
P0327, P0328, P0332, P0333 Knock sensor
P0335 Crankshaft position sensor (POS)
P0340, P0345 Camshaft position sensor (PHASE)
P0460, P0461, P0462, P0463 Fuel level sensor
P0500 Vehicle speed sensor
P0520 EOP sensor
P0605, P0607 ECM
P0643 Sensor power supply
P0850 Transmission range switch
P1550, P1551, P1552, P1553, P1554 Battery current sensor
P1556, P1557 Battery temperature sensor
P1610 - P1615 NATS
P2122, P2123, P2127, P2128, P2138 Accelerator pedal position sensor
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BASIC INSPECTIONEC-675
< BASIC INSPECTION > [VQ35DE]
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BASIC INSPECTION
Work ProcedureINFOID:0000000009462550
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance.
2. Open engine hood and check the following:
- Harness connectors for improper connections
- Wiring harness for improper connections, pinches and cut
- Vacuum hoses for splits, kinks and improper connections
- Hoses and ducts for leakage
- Air cleaner clogging
- Gasket
3. Check that electrical or mechanical loads are not applied.
- Head lamp switch is OFF.
- Air conditioner switch is OFF.
- Rear window defogger switch is OFF.
- Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
Check that engine stays below 1,000 rpm.
5. Run engine at approximately 2,000 rpm for approximately 2 min- utes under no load.
6. Check that no DTC is displayed with CONSULT or GST.
Are any DTCs detected?
YES >> GO TO 2.
NO >> GO TO 3.
2.REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3
3.CHECK TARGET IDLE SPEED
1. Run engine at approximately 2,000 rpm for approximately 2 minutes under no load.
SEF983U
SEF976U
SEF977U
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EC-682
< BASIC INSPECTION >[VQ35DE]
THROTTLE VALVE CLOSED POSITION LEARNING
THROTTLE VALVE CLOSED POSITION LEARNING
DescriptionINFOID:0000000009462555
Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle
valve by monitoring the throttle position sensor output signal. It must be performed each time the harness con-
nector of electric throttle control actuator or ECM is disconnected or electric throttle control actuator is
cleaned.
Work ProcedureINFOID:0000000009462556
1.START
WITH CONSULT
1. Turn ignition switch ON.
2. Select “CLSD THL POS LEARN” in “WORK SUPPORT” mode.
3. Follow the instructions on the CONSULT display.
4. Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
WITHOUT CONSULT
1. Start the engine.
NOTE:
Coolant temperature is less than 25 °C (77 °F) before engine starts.
2. Warm up the engine. NOTE:
Warm up the engine until “COOLAN TEMP/S” on “DAT A MONITOR” of CONSULT reaches more than
65 °C (149 °F).
3. Turn ignition switch OFF and wait at least 10 seconds.
NOTE:
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
>> END
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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