2014 NISSAN TEANA sensor

SENSOR POWER SUPPLY 2 CIRCUITEC-525
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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SENSOR POWER SUPPLY 2 CIRCUIT
DescriptionINFOID:0000000009462458
ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously
in the sensors belonging to the same group as the short-circuited sensor.
Sensor power supply 1
• APP sensor 1
• Battery current sensor
• CKP sensor (POS)
• Intake manifold runner control valve position sensor
• Refrigerant pressure sensor
• TP sensor
NOTE:
If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.
Sensor power supply 2
• APP sensor 2
• CMP sensor (PHASE)
• EVT control position sensor
• EOP sensor
• MAF sensor
Diagnosis ProcedureINFOID:0000000009462459
1.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-1
1. Turn ignition switch OFF.
2. Disconnect accelerator pedal position (APP) sensor harness connector.
3. Turn ignition switch ON.
4. Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-2
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between APP sens or harness connector and ECM harness connector.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit.
+
-Vo l ta g e
(Approx.)
APP sensor
Connector Terminal E40 5 Ground 5V
++ Continuity
APP sensor ECM
Connector Terminal Connector Terminal
E40 5 E10
*1
E31*2118 Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-526
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
SENSOR POWER SUPPLY 2 CIRCUIT
3.CHECK SENSOR POWER SUPPLY 2 CIRCUIT
1. Disconnect following sensors harness connector.
2. Check harness for short to power and short to ground, between the following terminals.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair short to ground or short to power in harness or connectors.
4.CHECK COMPONENTS
Check the following.
• APP sensor 2 (Refer to EC-486, "Component Inspection"
.)
• Camshaft position sensor (PHASE) (Refer to EC-331, "Component Inspection (Camshaft position sensor)"
.)
• EVT control position sensor (Refer to EC-415, "Component Inspection"
.)
• EOP sensor (Refer to EC-390, "Component Inspection"
.)
• MAF sensor (Refer to EC-230, "Component Inspection"
.)
Is the inspection result normal?
YES >> Refer to GI-43, "Intermittent Incident".
NO >> Replace malfunctioning component.
ECM Sensor
Connector Terminal Name Connector Terminal
F14
*1
F91*2
32 CMP sensor (PHASE) F55 1
36 MAF sensor F31 6
40 EOP sensor F9 3
44 EVT control position sensor F58 1
E10
*1
E31*2118 APP sensor 2 E40 5
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE CONTROL SYSTEMEC-527
< SYMPTOM DIAGNOSIS > [QR25DE]
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SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM
Symptom TableINFOID:0000000009462460
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2 EC-508
Fuel pressure regulator system 334444444 4EC-182
Fuel injector circuit 11232 22 2EC-505
Fuel level sensor circuitEC-376,
EC-378
Fuel tank temperature sensor circuit EC-304,
EC-306
Evaporative emission system 334444444 4 EC-536
Air Positive crankcase ventilation sys-
tem 334444444 41
EC-539
Incorrect idle speed adjustment 1 1 1 1 1 EC-179
Electric throttle control actuator 112332222 2 2EC-475,
EC-480
IgnitionIncorrect ignition timing adjustment33111 11 1 EC-535
Ignition circuit 11222 22 2EC-511
Main power supply and ground circuit 22333 33 23 EC-203
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-528
< SYMPTOM DIAGNOSIS >[QR25DE]
ENGINE CONTROL SYSTEM
Mass air flow sensor circuit
1
12 2
222 2 EC-228,
EC-232
Intake air temperature sensor circuit EC-240,
EC-241
Engine coolant temperature sensor circuit
333
EC-245,
EC-251
Air fuel ratio (A/F) sensor 1 circuit EC-258
,
EC-262
,
EC-265
,
EC-289
,
EC-468
Throttle position sensor circuit
22EC-248
,
EC-315
,
EC-426
,
EC-427
,
EC-488
Accelerator pedal position sensor circuit 3 2 1 EC-482
,
EC-485
,
EC-491
Heated oxygen sensor 2 circuit 6 6 6 6 5 EC-268
,
EC-276
,
EC-284
Knock sensor circuit 2 3 EC-324
Engine oil temperature sensor circuit 4 2 3EC-311,
EC-312
Engine oil pressure sensor circuit 4 4 3 3 3 3 EC-388,
EC-392
Crankshaft position sensor (POS) circuit 2 2 EC-326
Camshaft position sensor (PHASE) circuit 3 2EC-329
Vehicle speed signal circuit 2 3 3 3EC-380
ECM 22333333333EC-400
,
EC-401
,
EC-402
,
EC-404
Intake valve timing control solenoid valve cir-
cuit 32 13223 3 EC-209,
EC-221
Intake valve timing intermediate lock control
solenoid valve circuit EC-394
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE CONTROL SYSTEMEC-529
< SYMPTOM DIAGNOSIS > [QR25DE]
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1 - 6: The numbers refer to the order of inspection.
(continued on next table)
SYSTEM — ENGINE MECHANICAL & OTHER
Exhaust valve timing control solenoid valve
circuit 32 13223 3
EC-225
PNP signal circuit 3 3 3 3 3 EC-410
Refrigerant pressure sensor circuit 2 3 3 4EC-523
Electrical load signal circuit 3EC-503
Intake manifold runner control valve motor cir-
cuit 44
EC-462
Intake manifold runner control valve position
sensor circuit 44
EC-465
Intake manifold tuning valve circuit 1 EC-456
Manifold absolute pressure sensor circuit 3EC-236
Air conditioner circuit 223333333 3 2HAC-46,
HAC-139
Battery current sensor circuit 4 5 5 3 EC-428
,
EC-431
,
EC-434
,
EC-438
Battery temperature sensor circuit 4 5 5 3 EC-440
ASCD steering switch circuitEC-442
ABS actuator and electric unit (control unit) 4BRC-55
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-530
< SYMPTOM DIAGNOSIS >[QR25DE]
ENGINE CONTROL SYSTEM
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code A AAB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank 5
5 FL-10
Fuel piping 5 5 5 5 5 5
EM-41
Va p o r l o c k —
Valve deposit 5 555 55 5 —
Poor fuel (Heavy weight gas-
oline, Low octane) —
Air Air duct
55555 5 EM-29
Air cleaner
Air leakage from air duct
(Mass air flow sensor — elec-
tric throttle control actuator)
555 5
Electric throttle control actua-
tor EM-30
Air leakage from intake mani-
fold/Collector/Gasket
Cranking Battery 111111
11
PG-73

Generator circuit CHG-9
Starter circuit 3STR-6
Signal plate 6EM-88
PNP signal 4TM-206
Engine Cylinder head
55555 55 5 EM-78
Cylinder head gasket 4 3
Cylinder block
66666 66 6 4
EM-88
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

SERVICE DATA AND SPECIFICATIONS (SDS)EC-541
< SERVICE DATA AND SPECIFICATIONS (SDS) [QR25DE]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Idle SpeedINFOID:0000000009462469
*: Under the following conditions
• A/C switch: OFF
• Electric load: OFF (Lights, heater fan & rear window defogger)
• Steering wheel: Kept in straight-ahead position
Ignition TimingINFOID:0000000009462470
*: Under the following conditions
• A/C switch: OFF
• Electric load: OFF (Lights, heater fan & rear window defogger)
• Steering wheel: Kept in straight-ahead position
Calculated Load ValueINFOID:0000000009462471
Mass Air Flow SensorINFOID:0000000009462472
*: Engine is warmed up to normal operating temperature and running under no load. Condition Specification
No load* (in P or N position) 650 ± 50 rpm
Condition Specification
No load* (in P or N position) 10 ± 2 ° BTDC
Condition Specification (Using CONSULT or GST)
At idle 10 – 35 %
At 2,500 rpm 10 – 35 %
Supply voltageBattery voltage (11 – 14 V)
Output voltage at idle 1.3 – 1.6 V*
Mass air flow (Using CONSULT or GST) 1.0 – 4.0 g/s at idle*
4.0 – 10.0 g/s at 2,500 rpm*
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-542
< PRECAUTION >[VQ35DE]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint Syst
em (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009976114
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 the system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 NISS AN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minutes before performing any service.
On Board Diagnosti c (OBD) System of Engine and CVTINFOID:0000000009462476
The ECM has an on board diagnostic system. It will illuminate the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
• Always to turn the ignition swit ch OFF and disconnect the negative battery cable before any repair
or inspection work. The open/short circuit of re lated switches, sensors, solenoid valves, etc. will
cause the MIL to illuminate.
• Always to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to illuminate due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
• Certain systems and components, especially those related to OBD, may use a new style slide-lock-
ing type harness connector. For descrip tion and how to disconnect, refer to PG-65, "Description"
.
• Always route and secure the harnesses properly afte r work. The interference of the harness with a
bracket, etc. may cause the MIL to illu minate due to the short circuit.
• Always to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to illuminate due to the malfuncti on of the EVAP system or fuel injection system,
etc.
• Always to erase the unnecessary malfunction informati on (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM