2014 NISSAN TEANA oil pressure

SYSTEMEC-55
< SYSTEM DESCRIPTION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
Intake Manifold Tuning Valve Operating Condition
ECM opens the intake manifold tuning valve when all of the following conditions are satisfied.
• Engine speed: 5,000 rpm or more
• Engine coolant temperature: -30 °C (-22 °F) or more
• Battery voltage: 16 V or less
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System De-
scription
INFOID:0000000009462100
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pres-
sure by the oil pressure warning lamp a before the engine becomes damaged.
• When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits an oil pressure warning lamp signal to the combination meter.The combination meter turns ON the oil pres-
sure warning lamp, according to the signal.
*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.
FUEL FILLER CAP WARNING SYSTEM
JPBIA4922GB
Sensor Input signal to ECM ECM function Actuator
Engine oil pressure sensor Engine pressure Engine protection control
• Oil pressure warning lamp
signal
•FUel cut control Combination meter
• Oil pressure warning lamp
Crankshaft position sensor
(POS) Engine speed
Engine oil temperature sensor Engine oil temperature
Decrease in engine oil pressure Engine speed Combination meter
Fuel cut
Oil pressure warning lamp
Detection Less than 1,000 rpm ON* NO
1,000 rpm or more ON YES
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-90
< ECU DIAGNOSIS INFORMATION >[QR25DE]
ECM
VIAS S/V-1• Engine: After warming up
• Selector lever: P or N
• 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
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
COOLING FAN • Engine: After warming up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature is 97
°C
(207 °F) or less Off
Engine coolant temperature between
98 °C (208 °F) and 99 °C (210 °F) or more Low
Engine coolant temperature between
100 °C (212 °F) or more Hi
• Engine: After warming up, idle the engine
• Air conditioner switch: ON
• Refrigerant pressure is less than 1,280 kPa (12.80 bar, 13.05 kg/
cm
2, 185.6 psi) Engine coolant temperature is 97
°C
(207 °F) or less Off
Engine coolant temperature between
98 °C (208 °F) and 99 °C (210 °F) or more Mid
Engine coolant temperature between
100 °C (212 °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
ALT DUTY SIG • Power generation voltage variable control: Operating On
• Power generation voltage variable control: Not operating Off
I/P PULLY SPD • Vehicle speed: More than 20 km/h (12 MPH) Almost the same speed as
the tachometer indication
VEHICLE SPEED • Turn drive wheels and compare CONSULT value with the speedometer indi-
cation. Almost the same speed as
the speedometer indication
IDL A/V LEARN • Engine: running Idle air volume learning has not been per-
formed yet. YET
Idle air volume learning has already been
performed successfully. CMPLT
TRVL AFTER MIL • Ignition switch: ON Vehicle has traveled after MIL has turned
ON. 0 - 65,535 km
(0 - 40,723 miles)
ENG OIL TEMP • Engine: After warming up More than 70 °C (158 °F)
A/F S1 HTR(B1) • Engine: After warming up, idle the engine
(More than 140 seconds after starting engine.) 4 - 100%
VHCL SPEED SE • Turn drive wheels and compare CONSULT value with the speedometer indi-
cation. Almost the same speed as
the speedometer indication
SET VHCL SPD • Engine: Running ASCD: Operating The preset vehicle speed is
displayed
MAIN SW • Ignition switch: ON MAIN switch: Pressed On
MAIN switch: Released Off
Monitor Item Condition Values/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-95
< ECU DIAGNOSIS INFORMATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O28
(SB) 27
(BR) Engine coolant tempera-
ture sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine coolant temperature.
30
(SB) —Sensor ground
[Camshaft position sen-
sor (PHASE)] —— —
31
(LG) 30
(SB) Camshaft position sensor
(PHASE) Input[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle 1.0 - 2.0
[Engine is running]
• Engine speed is 2,000 rpm 1.0 - 2.0
32
(V) —Sensor power supply
[Camshaft position sen-
sor (PHASE)] — [Ignition switch: ON] 5.0 V
33
(V) 34
(BR) Intake air temperature
sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with intake
air temperature.
34
(BR) —Sensor ground
(Mass air flow sensor, in-
take air temperature sen-
sor) —— —
35
(Y) 34
(BR) Mass air flow sensor Input [Ignition switch: ON]
• Engine stopped 1.3 V
[Engine is running]
• Warm-up condition
• Idle speed 1.3 - 1.6 V
[Engine is running]
• Warm-up condition
• Engine is revving from idle to about
4,000 rpm 1.3 - 1.6 to 2.5 V (Check for linear
voltage rise in response to en-gine being increased to about
4,000 rpm.)
36
(SB) —
Sensor power supply
(Mass air flow sensor) — [Ignition switch: ON] 5.0 V
37
(B) — Shield — — —
38
(V) —Sensor ground
(Engine oil pressure sen-
sor) —— —
Terminal No.
(Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
Output
JPBIA4726ZZ
JPBIA4727ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-96
< ECU DIAGNOSIS INFORMATION >[QR25DE]
ECM
39
(L) 38
(V) Engine oil pressure sen-
sor Input[Engine is running]
• Warm-up condition
• Idle speed 1.3 V
[Engine is running]
• Warm-up condition
• Engine speed is 2,000 rpm 2.7 V
40
(BR) 38
(V) Sensor power supply
(Engine oil pressure sen-
sor) — [Ignition switch: ON] 5.0 V
41
(W) 128
(GR) A/F sensor 1 Input [Ignition switch: ON] 2.2 V
42
(SB) —Sensor ground
[Exhaust valve timing
control position sensor] —— —
43
(LG) 42
(SB) Exhaust valve timing con-
trol position sensor Input[Engine is running]
• Warm-up condition
• Idle speed NOTE:
The pulse cycle changes depending
on rpm at idle 1.0 - 2.0
[Engine is running]
• Engine speed is 2,000 rpm 1.0 - 2.0
44
(V) —Sensor power supply
[Exhaust valve timing
control position sensor] — [Ignition switch: ON] 5 V
45
(B) 128
(GR) A/F sensor 1 Input [Engine is running]
• Engine speed is 2,000 rpm 1.8 V
Output voltage varies with air fuel ratio.
49
(W) 128
(GR) Intake manifold runner
control valve motor
(Close) Output[Ignition switch ON]
• Engine coolant temperature: Be- tween -12 °C (10 °F) and 59 °C
(138 °F)
• Accelerator pedal: Depressed → ful-
ly released Battery voltage appears for about
1 second.
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
OutputJPBIA3359ZZ
JPBIA3360ZZ
JPBIA4730ZZ
JPBIA4731ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-103
< ECU DIAGNOSIS INFORMATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
OP0171
P0172 Fuel injection system
×—— —
P0197
P0198 Engine oil temperature sensor
———Exhaust valve timing control does not function.
P0300
P0301
P0302
P0303
P0304 Misfire
×—— —
P0500 Vehicle speed sensor ×—— —
P050A Cold start control ×—— —
P0524 Engine oil pressure
———• ECM illuminates oil pressure warning lamp on the combina-
tion meter.
• Engine speed will not rise more than 4,000rpm due to the fuel cut.
• Fail-safe is canceled when ignition switch OFF → ON.
P052A
P052B Intake valve timing intermedi-
ate lock control ——
× —
P0603 ECM power supply circuit — ×——
P0605 ECM — ×——
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.
P1078 Exhaust valve timing control position sensor circuit ×
— × —
P1805 Brake switch
———ECM controls the electric throttle control actuator by regulat-
ing 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
P2004 Intake manifold runner control valve —
×× —
P2100
P2103 Throttle contro
l 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 throttle control func- tion ——— 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 actua-
tor —
×——
P2122
P2123
P2127
P2128
P2138 Accelerator pedal position
sensor
———The ECM controls the electric throttle control actuator in reg-
ulating 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.
So, the acceleration will be poor.
DTC
No. Detected items Vehicle behavior
Pattern Others
ABC
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-104
< ECU DIAGNOSIS INFORMATION >[QR25DE]
ECM
DTC Inspection Priority Chart
INFOID:0000000009462123
If some DTCs are displayed at the same time, perfo rm inspections one by one based on the following priority
chart.
Priority DTC Detected items
1 U0101, U1001 CAN communication line
P0101, P0102, P0103 Mass air flow sensor
P010A Manifold absolute pressure 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 Knock sensor
P0335 Crankshaft position sensor (POS)
P0340 Camshaft position sensor (PHASE)
P0460, P0461, P0462, P0463 Fuel level sensor
P0500 Vehicle speed sensor
P0520 Engine oil pressure sensor
P0603, P0604, P0605, P0606, P0607, P060A, P060B,
P2610 ECM
P0643 Sensor power supply
P0850 Transmission range switch
P1078 Exhaust valve timing control position sensor
P1550, P1551, P1552, P1553, P1554 Battery current sensor
P1556, P1557 Battery temperature sensor
P1610, P1611, P1612, P1615 NATS
P2014, P2016, P2017, P2018 Intake manifold runner control valve position sensor
P2122, P2123, P2127, P2128, P2138 Accelerator pedal position sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-105
< ECU DIAGNOSIS INFORMATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
DTC IndexINFOID:0000000009462124
×
:Applicable —: Not applicable
2 P0031, P0032 Air fuel ratio (A/F) sensor 1 heater
P0037, P0038 Heated oxygen sensor 2 heater
P0075 Intake valve timing control solenoid valve/Intake valve timing
intermediate lock control solenoid valve
P0078 Exhaust valve timing control solenoid valve
P0130, P0131, P0132, P014 C, P014D, P015A, P015B,
P117A, P2096, P2097 Air fuel ratio (A/F) sensor 1
P0137, P0138, P0139 Heated oxygen sensor 2
P0441 EVAP control system purge flow monitoring
P0443, P0444, P0445 EVAP canister purge volume control solenoid valve
P0447, P0448 EVAP canister vent control valve
P0451, P0452, P0453 EVAP control system pressure sensor
P1217 Engine over temperature (OVERHEAT)
P1800 Intake manifold tuning valve
P1805 Brake switch
P2004 Intake manifold runner control valve
P2100, P2103 Throttle control motor relay
P2101 Electric thrott le control function
P2118 Throttle control motor
3 P0011, P052A, P052B Intake valve timing control
P0014 Exhaust valve timing control
P0171, P0172 Fuel injection system function
P0300, P0301, P0302, P0303, P0304 Misfire
P0420 Three way catalyst function
P0456 EVAP control system
P0506, P0507 Idle speed control system
P050A, P050B, P050E Cold start control
P0524 Engine oil pressure
P1148 Closed loop control
P1212 TCS communication line
P1564 ASCD steering switch
P1572 ASCD brake switch
P1574 ASCD vehicle speed sensor
P1715 Input speed sensor
P2119 Electric throttle control actuator
Priority DTC Detected items
DTC*1
Items
(CONSULT screen terms) SRT
code Trip MIL Permanent
DTC group*4Reference page
CONSULT
GST
*2ECM*3
U0101 0101*5CAN COMM CIRCUIT — 1 ×BEC-207
U1001
1001*5CAN COMM CIRCUIT — 2 — — EC-208
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-107
< ECU DIAGNOSIS INFORMATION > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
OP0198 0198 EOT SEN/CIRC — 2
×BEC-312
P0222 0222 TP SEN 1/CIRC-B1 — 1 ×BEC-315
P0223 0223 TP SEN 1/CIRC-B1 — 1 ×BEC-315
P0300 0300 MULTI CYL MISFIRE — 1 or 2 ×BEC-318
P0301 0301 CYL 1 MISFIRE — 1 or 2 ×BEC-318
P0302 0302 CYL 2 MISFIRE — 1 or 2 ×BEC-318
P0303 0303 CYL 3 MISFIRE — 1 or 2 ×BEC-318
P0304 0304 CYL 4 MISFIRE — 1 or 2 ×BEC-318
P0327 0327 KNOCK SEN/CIRC-B1 — 2 — — EC-324
P0328 0328 KNOCK SEN/CIRC-B1 — 2 — —EC-324
P0335 0335 CKP SEN/CIRCUIT — 2×BEC-326
P0340 0340 CMP SEN/CIRC-B1 — 2 ×BEC-329
P0420 0420 TW CATALYST SYS-B1 ×2 × AEC-332
P0441 0441 EVAP PURG FLOW/MON ×2 × AEC-337
P0443 0443 PURG VOLUME CONT/V — 2 ×AEC-342
P0444 0444 PURG VOLUME CONT/V — 2 ×BEC-347
P0445 0445 PURG VOLUME CONT/V — 2 ×BEC-347
P0447 0447 VENT CONTROL VALVE — 2 ×BEC-350
P0448 0448 VENT CONTROL VALVE — 2 ×BEC-354
P0451 0451 EVAP SYS PRES SEN — 2 ×AEC-358
P0452 0452 EVAP SYS PRES SEN — 2 ×BEC-362
P0453 0453 EVAP SYS PRES SEN — 2 ×BEC-366
P0456 0456 EVAP VERY SML LEAK
×*72 × AEC-370
P0460 0460 FUEL LEV SEN SLOSH — 2 ×AEC-376
P0461 0461 FUEL LEVEL SENSOR — 2 ×BEC-377
P0462 0462 FUEL LEVL SEN/CIRC — 2 ×BEC-379
P0463 0463 FUEL LEVL SEN/CIRC — 2 ×BEC-379
P0500 0500
VEH SPEED SEN/CIRC*8—2 ×BEC-380
P0506 0506 ISC SYSTEM — 2 ×BEC-382
P0507 0507 ISC SYSTEM — 2 ×BEC-384
P050A 050A COLD START CONTROL — 2 ×AEC-386
P050B 050B COLD START CONTROL — 2 ×AEC-386
P050E 050E COLD START CONTROL — 2 ×AEC-386
P0520 0520 EOP SENSOR/SWITCH — 2 — — EC-388
P0524 0524 ENGINE OIL PRESSURE — 1 — —EC-391
P052A 052A CAMSHAFT POSITION TIMING B1 — 2×BEC-394
P052B 052B CAMSHAFT POSITION TIMING B1 — 2 ×BEC-394
P0603 0603
ECM BACK UP/CIRCUIT*9—2 × or — B EC-400
P0604 0604 ECM — 1 ×BEC-401
P0605 0605 ECM — 1 or 2 ×BEC-402
P0606 0606 CONTROL MODULE — 1 × or — B EC-403
P0607 0607 ECM — 1 or 2 × or — B EC-404
DTC*1
Items
(CONSULT screen terms) SRT
code Trip MIL Permanent
DTC group*4Reference page
CONSULT
GST
*2ECM*3
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM