2009 NISSAN LATIO Service Repair Manual

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Page 1537 of 4331

NISSAN LATIO 2009 Service Repair Manual P0128 THERMOSTAT FUNCTION
EC-181
< COMPONENT DIAGNOSIS >
[HR16DE] C
D E
F
G H
I
J
K L
M A EC
NP
O
Is the inspection result normal? YES >> GO TO 2.
NO >> Replace engine coolant temperature sensor. 2.
C

Page 1538 of 4331

NISSAN LATIO 2009 Service Repair Manual YES >> Go to
EC-185, " Diagnosis Procedure " . PBIB3354E

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NISSAN LATIO 2009 Service Repair Manual EC
NP
O
NO-1 >> With CONSULT-III: GO TO 3.
NO-2 >> Without CONSULT-III: GO TO 7. YES >> GO TO 4.
NO >> Go to EC-185, " Diagnosis Procedure " .
“ TESTING ” displayed on CONSULT-III screen?
YES >>

Page 1540 of 4331

NISSAN LATIO 2009 Service Repair Manual YES >> Go to
EC-185, " Diagnosis Procedure " .
NO >> INSPECTION END

Page 1541 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
NP
O
Wiring Diagram
INFOID:0000000004780681
Diagnosis Procedure INFOID:0000000004780110Ground Inspection " .
Is the inspection result normal? B

Page 1542 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-186< COMPONENT DIAGNOSIS >
[HR16DE]
P0130 A/F SENSOR 1
YES >> GO TO 2.
NO >> Repair or replace ground connection. 2.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect A/F senso

Page 1543 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
NP
O
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace.

Page 1544 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-188< COMPONENT DIAGNOSIS >
[HR16DE]
P0131 A/F SENSOR 1
P0131 A/F SENSOR 1
Description INFOID:0000000004780111
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The se

EC-188< COMPONENT DIAGNOSIS >
[HR16DE]
P0131 A/F SENSOR 1
P0131 A/F SENSOR 1
Description INFOID:0000000004780111
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In additi on, a heater is integrated in the
sensor to ensure the required operating temperature of about 800 °C
(1,472 °F).
DTC Logic INFOID:0000000004780112
DTC DETECTION LOGIC
To judge the malfunction, the diagnosis checks that t he A/F signal computed by ECM from the A/F sensor 1
signal is not inordinately low.
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.
>> GO TO 2. 2.
CHECK A/F SENSOR FUNCTION
With CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Select “A/F SEN1 (B1)” in “D ATA MONITOR” mode with CONSULT-III.
3. Check “A/F SEN1 (B1)” indication.
With GST
Follow the procedure “With CONSULT-III” above.
Is the indication constantly approx. 0 V? JMBIA0112GB
PBIB3354E
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P0131 Air fuel ratio (A/F) sensor 1
circuit low voltage • The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 0 V. • Harness or connectors
(The A/F sensor 1 circuit is open or
shorted.)
• A/F sensor 1

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