2014 NISSAN TEANA ignition

IGNITION SIGNALEC-511
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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IGNITION SIGNAL
Component Function CheckINFOID:0000000009462445
1.INSPECTION START
Turn ignition switch OFF, and restart engine.
Does the engine start?
YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO >> Proceed to EC-511, "Diagnosis Procedure"
.
2.CHECK IGNITION SIGNAL FUNCTION
With CONSULT
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT.
2. Check that each circuit produces a momentary engine speed drop.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-511, "Diagnosis Procedure"
.
3.CHECK IGNITION SIGNAL FUNCTION
Without CONSULT
1. Let engine idle.
2. Read the voltage signal between ECM harness connector terminals with an oscilloscope.
*1: Except for California
*2: For California
NOTE:
The pulse cycle changes depending on rpm at idle.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-511, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462446
1.CHECK ECM POWER SUPPLY
1. Turn ignition switch OFF, wait at least 10 seconds and then turn it ON.
2. Check the voltage between ECM harness connector terminals.
ECM
Voltage signal
+–
Connector Terminal Connector Terminal
F13
*1
F90*2
86 E10
*1
E31*2128
87
90
91
JMBIA0035GB
ECM Vo l ta g e
Connector +–
Te r m i n a l
E10
*1
E31*2121 128 Battery voltage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-512
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
IGNITION SIGNAL
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EC-203, "Diagnosis Procedure"
.
2.CHECK CONDENSER POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Turn ignition switch ON.
4. Check the voltage between condenser harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK CONDENSER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between IPDM E/R harness connector and condenser harness connector.
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> Refer to EC-203, "Diagnosis Procedure".
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK CONDENSER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check the continuity between condenser harness connector and ground.
3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair open circuit or short to power in harness or connectors.
5.CHECK CONDENSER
Check condenser. Refer to EC-515, "Component Inspection (Condenser)"
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace condenser.
+
-Voltage
Condenser
Connector Terminal F26 1 Ground Battery voltage
+- Continuity
IPDM E/R Condenser
Connector Terminal Connector Terminal F8355F26 1Existed
+ -Voltage
Condenser
Connector Terminal F26 2 Ground Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

IGNITION SIGNALEC-513
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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6.CHECK IGNITION COIL POWER SUPPLY
1. Reconnect all harness connectors disconnected.
2. Disconnect ignition coil harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ignition coil harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness or connectors.
7.CHECK IGNITION COIL GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check the continuity between ignition coil harness connector and ground.
3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair open circuit or short to power in harness or connectors.
8.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check the continuity between ignition coil harness connector and ECM harness connector.
*1: Except for California
*2: For California
3. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
+
-Voltage
Ignition coil
Cylinder Connector Terminal 1F343
Ground Battery voltage
2F353
3F363
4F373
+ -Continuity
Ignition coil
Cylinder Connector Terminal 1F342
Ground Existed
2F352
3F362
4F372
+- Continuity
Ignition coil ECM
Cylinder Connector Terminal Connector Terminal 1F341
F13
*1
F90*2
86
Existed
2F351 87
3F361 90
4F371 91
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-514
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
IGNITION SIGNAL
9.CHECK IGNITION COIL WITH POWER TRANSISTOR
Check ignition coil with power transistor. Refer to EC-514, "Component Inspection (Ignition Coil with Power
Transistor)".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace malfunctioning ignition coil with power transistor. Refer to EM-40, "Removal and Installa-
tion".
Component Inspection (Ignition Coil with Power Transistor)INFOID:0000000009462447
1.CHECK IGNITION COIL WITH POWER TRANSISTOR-1
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as per the following.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace malfunctioning ignition coil with power transistor. Refer to EM-40, "Removal and Installa-
tion".
2.CHECK IGNITION COIL WITH POWER TRANSISTOR-2
CAUTION:
Perform the following procedure in a place with no combustible objects and good ventilation.
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT to release fuel pressure, or fuel pressure applies again during the following proce-
dure.
4. Start engine.
5. After engine stalls, crank it 2 or 3 times to release all fuel pressure.
6. Turn ignition switch OFF.
7. Remove all ignition coil harness connectors to avoi d the electrical discharge from the ignition coils.
8. Remove ignition coil and spark plug of the cylinder to be checked.
9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
10. Connect spark plug and harness connector to ignition coil.
11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 - 0.66 in) between the edge of the spark plug and grounded metal
portion as shown in the figure.
12. Crank engine for approximately 3 seconds, and check whether spark is generated between the spark plug and the grounded
metal portion.
CAUTION:
• During the operation, always stay 0.5 m (19.7 in) or more
away from the spark plug and the ignition coil. Be careful
not to get an electrical s hock while checking, because the
electrical discharge voltage becomes 20 kV or more.
• It might cause to damage the igni tion coil if the gap of more than 17 mm (0.66 in) is taken.
Ignition coil
Resistance Ω [at 25 °C (77 °F)]
+-
Terminal No. (Polarity)
1 2 Except 0 or
∞
3 Except 0
23
Spark should be generated.
JMBIA0066GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

IGNITION SIGNALEC-515
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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NOTE:
When the gap is less than 13 mm (0.52 in), the sp ark might be generated even if the coil is mal-
functioning.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace malfunctioning ignition coil with power transistor. Refer to EM-40, "Removal and Installa-
tion".
Component Inspection (Condenser)INFOID:0000000009462448
1.CHECK CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals as per the following.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace condenser.
Condenser
Resistance
+-
Te r m i n a l
1 2 Above 1 M Ω [at 25C ° (77C °)]
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

MALFUNCTION INDICATOR LAMPEC-517
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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MALFUNCTION INDICATOR LAMP
Component Function CheckINFOID:0000000009462451
1.CHECK MIL FUNCTION
1. Turn ignition switch ON.
2. Check that MIL illuminates.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-517, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462452
1.CHECK DTC
Check that DTC UXXXX is not displayed.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis for DTC UXXXX.
2.CHECK COMBINATION METER FUNCTION
Check combination meter function. Refer to MWI-18, "CONSULT Function (METER/M&A)"
.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace.
3.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to GI-43, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-82, "Removal and Installation".
NO >> Repair or replace error-detected parts.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-520
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Is the inspection result normal?
YES >> GO TO 15.
NO >> Replace fuel filler tube. Refer to FL-10, "Exploded View"
.
15.CHECK ONE-WAY FUEL VALVE-1
Check one-way valve for clogging.
Is the inspection result normal?
YES >> GO TO 16.
NO >> Repair or replace one-way fuel valve with fuel tank. Refer to FL-10, "Removal and Installation"
.
16.CHECK ONE-WAY FUEL VALVE-2
1. Check that fuel is drained from the tank.
2. Remove fuel filler tube and hose. Refer to FL-10, "Exploded View"
.
3. Check one-way fuel valve for operation as per the following.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace fuel filler tube or replace one-way fuel valve
with fuel tank. Refer to FL-10, "Removal and Installa-
tion".
Component InspectionINFOID:0000000009462455
1.INSPECTION START
Will CONSULT be used?
Will CONSULT be used?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK REFUELING EVAP VAPOR CUT VALVE
With CONSULT
1. Turn ignition switch OFF.
2. Remove fuel tank. Refer to FL-10, "Removal and Installation"
.
3. Drain fuel from the tank as per the following:
- Remove fuel feed hose located on the fuel gauge retainer.
- Connect a spare fuel hose, one side to fuel gauge re tainer where the hose was removed and the other
side to a fuel container.
- Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT.
4. Check refueling EVAP vapor cut valve for being stuck to close as per the following. Blow air into the refueling EVAP vapor cut valv e (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
5. Check refueling EVAP vapor cut valve for being stuck to open as per the following.
- Connect vacuum pump to hose end.
- Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ri ng with new one.
- Turn fuel tank upside down.
- Apply vacuum pressure to hose end [ −13.3 kPa ( −0.136 kg/cm
3, −1.93 psi)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
SEF665U
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-521
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace refueling EVAP vapor cut valve with fuel tank. Refer to FL-10, "Removal and Installation"
.
3.CHECK REFUELING EVAP VAPOR CUT VALVE
Without CONSULT
1. Turn ignition switch OFF.
2. Remove fuel tank. Refer to FL-10, "Removal and Installation"
.
3. Drain fuel from the tank as per the following:
- Remove fuel gauge retainer.
- Drain fuel from the tank using a handy pump into a fuel container.
4. Check refueling EVAP vapor cut valve for being stuck to close as per the following.
Blow air into the refueling EVAP vapor cut valv e (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
5. Check refueling EVAP vapor cut valve for being stuck to open as per the following.
- Connect vacuum pump to hose end.
- Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one.
- Turn fuel tank upside down.
- Apply vacuum pressure to hose end [ −13.3 kPa ( −0.136 kg/cm
3, −1.93 psi)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
Filler tube Recirculation line EVAP/ORVR line
Vacuum/pressure handy pump Fuel tank
JPBIA5852ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM