ignition NISSAN TEANA 2014 Service Manual

EC-506
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
FUEL INJECTOR
Is the inspection result normal?
YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
3.CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel inje ctor harness connector and ECM harness connector.
*1: Except for California
*2: For California
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK FUEL INJECTOR
Check fuel injector. Refer to EC-506, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning fuel injector. Refer to EM-41, "Exploded View"
.
5.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to GI-43, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Repair or replace error-detected parts.
Component InspectionINFOID:0000000009462440
1.CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
+-
Continuity
Fuel injector IPDM E/R
Cylinder Connector Terminal Connector Terminal 1F171
F8354
Existed
2F181 60
3F191 54
4F201 60
+- Continuity
Fuel injector ECM
Cylinder Connector Terminal Connector Terminal 1F172
F14
*1
F91*2
13
Existed
2F182 14
3F192 10
4F202 9
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-508
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
FUEL PUMP
FUEL PUMP
DescriptionINFOID:0000000009462441
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The EC M stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly driv e the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
Component Function CheckINFOID:0000000009462442
1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-508, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462443
1.CHECK FUEL PUMP RELAY CONTROL SIGNAL
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FUEL PUMP RELAY CONTROL SIGNAL CIRCUIT
1. Turn ignition switch OFF.
Sensor Input signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Stops.
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after igniti on switch is turned ON.
ECM
Vo l ta g e
+-
Connector Terminal Connector Terminal
F14
*1
F91*218 E10*1
E31*2128Battery voltage should exist 1 second after
ignition switch is turn ON.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

FUEL PUMPEC-509
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
*1: Except for California
*2: For California
5. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace error-detected parts.
3.CHECK FUEL PUMP POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor unit and fuel pump” harness connector.
3. Turn ignition switch ON.
4. Check the voltage between “fuel level sensor unit and fuel pump” harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK FUEL PUMP POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between IP DM E/R harness connector and “fuel level sensor unit and fuel pump”
harness connector.
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace error-detected parts.
5.CHECK FUEL PUMP GROUND CIRCUIT
1. Check the continuity between “fuel le vel sensor unit and fuel pump” and ground.
+-
Continuity
ECM IPDM E/R
Connector Terminal Connector Terminal
F14
*1
F91*218 F84 69 Existed
+
-Voltage
Fuel level sensor unit
and fuel pump
Connector Terminal
B42 6 Ground Battery voltage should exist 1 second
after ignition switch is turn ON.
+-
Continuity
IPDM E/R Fuel level sensor unit and
fuel pump
Connector Terminal Connector Terminal E1815B42 6Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-510
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
FUEL PUMP
2. Also heck harness for short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK FUEL PUMP
Refer to EC-510, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace “fuel level sensor unit and fuel pump”. Refer to FL-6, "Removal and Installation"
.
7.CHECK INTERMITTENT INCIDENT
Perform GI-43, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Repair or replace harness or connectors.
Component InspectionINFOID:0000000009462444
1.CHECK FUEL PUMP
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor uni t and fuel pump” harness connector.
3. Check resistance between “fuel level sensor unit and fuel pump” terminals as follows.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace “fuel level sensor unit and fuel pump”. Refer to FL-6, "Removal and Installation"
.
+
-Continuity
Fuel level sensor unit and fuel pump
Connector Terminal B42 4 Ground Existed
Fuel level sensor unit and fuel pump Resistance
+-
Te r m i n a l
6 4 0.2 - 5.0 Ω [at 25 °C (77 °F)]
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

IGNITION SIGNALEC-511
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
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]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
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]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
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]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
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