2014 NISSAN TEANA Service Manual

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Page 1881 of 4801

NISSAN TEANA 2014 Service Manual
P0603 ECM POWER SUPPLYEC-881
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0603 ECM POWER SUPPLY
DTC LogicINFOID:0000000009462732
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDUR

Page 1882 of 4801

NISSAN TEANA 2014 Service Manual
EC-882
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0603 ECM POWER SUPPLY
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE. See EC-881, "DTC Logic"
.
Is the 1st trip DTC P0603 displayed again?
YES >> Repl

Page 1883 of 4801

NISSAN TEANA 2014 Service Manual
P0605 ECMEC-883
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0605 ECM
DTC LogicINFOID:0000000009462734
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC

Page 1884 of 4801

NISSAN TEANA 2014 Service Manual
EC-884
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0607 ECM
P0607 ECM
DTC LogicINFOID:0000000009462736
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition swi

Page 1885 of 4801

NISSAN TEANA 2014 Service Manual
P0643 SENSOR POWER SUPPLYEC-885
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0643 SENSOR POWER SUPPLY
DescriptionINFOID:0000000009462738
ECM supplies a voltage of 5 V to some

P0643 SENSOR POWER SUPPLYEC-885
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0643 SENSOR POWER SUPPLY
DescriptionINFOID:0000000009462738
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
• Accelerator pedal position (APP) sensor 1
• Camshaft position (CMP) sensor (PHASE)
• Electric throttle control actuator
• Battery current sensor
NOTE:
If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.
Sensor power supply 2
• Accelerator pedal position (APP) sensor 2
• Crankshaft position (CKP) sensor (POS)
• Refrigerant pressure sensor
• EVAP control system pressure sensor
• Engine oil pressure sensor
DTC LogicINFOID:0000000009462739
DTC DETECTION LOGIC
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Proceed to EC-885, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462740
1.CHECK SENSOR POWER SUPPLY 1
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
DTC No. Trouble diagnosis name
(Trouble diagnosis con- tent) DTC detecting condition Possible cause
P0643 SENSOR POWER/
CIRC
(Sensor power supply 1
circuit short) ECM detects a voltage of power source
for sensor is excessively low or high. Sensor power supply 1 circuit
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1886 of 4801

NISSAN TEANA 2014 Service Manual
EC-886
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0643 SENSOR POWER SUPPLY
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >>

Page 1887 of 4801

NISSAN TEANA 2014 Service Manual
P0850 PNP SWITCHEC-887
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
P0850 PNP SWITCH
DescriptionINFOID:0000000009462741
When the selector lever position is P or N, park/
neutra

Page 1888 of 4801

NISSAN TEANA 2014 Service Manual
EC-888
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0850 PNP SWITCH
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-888, "Diagnosis Procedure".
NO >> INSPECTION END
5.PERFORM COMPONENT

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