2014 NISSAN TEANA stop start

EC-378
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0461 FUEL LEVEL SENSOR
9. Touch “ON” and drain fuel approximately 30 (7-7/8 US gal, 6-5/8 Imp gal) and stop it.
10. Check “FUEL LEVEL SE” output voltage and note it.
11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
12. Check “FUEL LEVEL SE” output voltage and note it.
13. Confirm whether the voltage changes more than 0.03 V during step 7 to 10 and 10 to 12.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-378, "Diagnosis Procedure"
.
3.PERFORM COMPONENT FUNCTION CHECK
Without CONSULT
NOTE:
Start from step 8, if it is possibl e to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8
Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line. Refer to EC-182, "Work Procedure"
.
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch ON.
6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
9. Confirm that the fuel gauge indication varies.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-378, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462300
1.CHECK COMBINATION METER FUNCTION
Refer to MWI-18, "CONSULT Function (METER/M&A)"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Refer to MWI-61, "Component Function Check"
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0604 ECMEC-401
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0604 ECM
DTC LogicINFOID:0000000009462329
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following pro cedure, confirm that battery voltage is 11 V or more with ignition
switch ON.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (engine stopped) and wait least 20 minutes. CAUTION:
Never start engine during this procedure.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-401, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462330
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure. Refer to EC-401, "DTC Logic"
.
Is the 1st trip DTC
P0604 displayed again?
YES >> Replace ECM. Refer to EC-540, "Removal and Installation".
NO >> INSPECTION END
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0604 ECM
[Internal control module
random access memory
(RAM) error] Malfunction in the internal RAM of ECM. ECM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-402
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0605 ECM
P0605 ECM
DTC LogicINFOID:0000000009462331
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm th at battery voltage is 11 V or more with ignition
switch ON.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (engine stopped) and wait least 20 minutes. CAUTION:
Never start engine during this procedure.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-402, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462332
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure. Refer to EC-401, "DTC Logic"
.
Is the 1st trip DTC
P0605 displayed again?
YES >> Replace ECM. Refer to EC-540, "Removal and Installation".
NO >> INSPECTION END
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0605 ECM
[Internal control module
read only memory (ROM)
error] Malfunction in the internal ROM of ECM. ECM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0606 ECMEC-403
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0606 ECM
DTC LogicINFOID:0000000009561259
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following pro cedure, confirm that battery voltage is 11 V or more with ignition
switch ON.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Turn ignition switch ON (engine stopped) and wait at least 10 seconds. CAUTION:
Never start engine during this procedure.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-403, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
1. Start engine.
2. Rev up the engine quickly to approximately 3,000 rpm under unloaded condition and completely release the accelerator pedal.
3. Let the engine idle and wait at least 10 seconds.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-403, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009561260
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure for 3 times. Refer to EC-403, "DTC Logic"
.
Is the 1st trip DTC
P0606 displayed again?
YES >> Replace ECM. Refer to EC-540, "Removal and Installation".
NO >> INSPECTION END
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0606 CONTROL MODULE
(Control module processor) Malfunction in ECM processor. ECM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-418
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P117A AIR FUEL RATIO
• Always drive vehicle at a safe speed.
NOTE:
• Drive the vehicle at approximately 88 km/h (55MPH) allows easy diagnosis.
• Keep the accelerator pedal as possible during crusing.
3. Check “SYSTEM 1 DIAGNOSIS A B1” indication.
Is
“CMPLT” displayed?
YES >> GO TO 5.
NO >> GO TO 2.
5.PERFORM DTC CONFIRMATION PROCEDURE-3
Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-418, "Diagnosis Procedure".
NO >> INSPECTION END
6.PERFORM DTC CONFIRMATION PROCEDURE-4
Without CONSULT
1. Start the engine and warm it up to normal operating temperature.
2. Drive vehicle under the following conditions for at least 5 consecutive seconds. CAUTION:
• Always drive vehicle at a safe speed.
NOTE:
• Drive the vehicle at approximately 88 km/h (55MPH) allows easy diagnosis.
• Keep the accelerator pedal as possible during crusing.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-418, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462348
1.CHECK FOR INTAKE AIR LEAK
1. Stop engine and check the following for connection.
-Air duct
- Vacuum hoses
- PCV hose
- Intake air passage between air duct to intake manifold
2. Start engine and let it idle.
3. Listen for an intake air leak after the mass air flow sensor.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK EXHAUST GAS LEAK
ENG SPEED 1,000 – 1,250rpm
COOLAN TEMP/S More than 80 °C (176 °F)
B/FUEL SCHDL 4 – 7 ms
Selector lever D position
SYSTEM 1 DIAGNOSIS B B1 PRSENT
Engine speed 1,000 – 1,250 rpm
Calculated load value 26 – 35 %
Selector lever D position
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P117A AIR FUEL RATIOEC-419
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
1. Stop engine and visually check exhaust tube, three way catalyst and muffler for dents connection.
2. Start engine and let it idle.
3. Listen for an exhaust gas leak before three way catalyst (manifold).
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace error-detected parts.
3.CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-182, "Work Procedure"
.
2. Check fuel pressure. Refer to EC-182, "Work Procedure"
.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 9.
4.CHECK MASS AIR FLOW SENSOR
With CONSULT
Check “MASS AIR FLOW” in “DATA MONITO R” mode of “ENGINE” using CONSULT.
For specification, refer to EC-541, "Mass Air Flow Sensor"
.
With GST
Check mass air flow sensor signal in Service $01 using GST.
For specification, refer to EC-541, "Mass Air Flow Sensor"
.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check connectors for rusted terminals or loose c onnections in the mass air flow sensor circuit or
grounds. Refer to EC-228, "Diagnosis Procedure"
.
5.CHECK FUNCTION OF FUEL INJECTOR-1
With CONSULT
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
3. Check that each circuit produces a momentary engine speed drop.
Without CONSULT
1. Let engine idle.
2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Perform trouble diagnosis for fuel injector, refer to EC-
505, "Component Function Check".
6.CHECK FUNCTION OF FUEL INJECTOR-2
CAUTION:
JMBIA0163GB
Clicking noise should be heard.
PBIB3332E
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P1572 ASCD BRAKE SWITCHEC-445
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P1572 ASCD BRAKE SWITCH
DTC LogicINFOID:0000000009462378
DTC DETECTION LOGIC
NOTE:
• If DTC P1572 is displayed with DTC P0603, P0604, P0605, P0606, P 0607, P060A, and P060B, first per-
form the trouble diagnosis for DTC P0603, P0604, P0605, P0606, P0607, P060A, and P060B. Refer to
EC-402, "DTC Logic"
.
• This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.
1st trip DTC is erased when igniti on switch OFF. And even when ma lfunction A is detected in two
consecutive trips, DTC is not stored in ECM memory.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
NOTE:
Procedure for malfunction B is not described here. It take s extremely long time to complete procedure for mal-
function B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Start engine.
2. Press MAIN switch and make sure that CRUISE indicator is displayed in combination meter.
3. Drive the vehicle for at least 5 consecut ive seconds as per the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheel s lifted in the shop or by driving the vehicle.
If a road test is expected to be easier , it is unnecessary to lift the vehicle.
4. Check DTC.
Is DTC detected?
YES >> Proceed to EC-452, "Diagnosis Procedure".
NO >> GO TO 3.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P1572 ASCD BRAKE SW
(ASCD BRAKE SW) A)
When the vehicle speed is above 30 km/
h (19 MPH), ON signals from the stop
lamp switch and the brake pedal position
switch are sent to the ECM at the same
time. • Harness or connectors
(Stop lamp switch circuit is shorted.)
(Brake pedal position switch circuit is
shorted.)
•Stop lamp switch
• Brake pedal position switch
•Stop lamp relay
• Incorrect stop lamp switch installation
• Incorrect brake pedal position switch in- stallation
•ECM
B)
Brake pedal position switch signal is not
sent to ECM for extremely long time while
the vehicle is driving.
Vehicle speed More than 30 km/h (19 mph)
Selector lever Suitable position
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