Nissan Murano Z51. Manual — part 543
EC-180
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0128 THERMOSTAT FUNCTION
P0128 THERMOSTAT FUNCTION
DTC Logic
INFOID:0000000005536591
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301, P0302, P0303, P0304, P0305 or P0306, first perform
the trouble diagnosis for DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306. Refer to
Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long
enough.
This is due to a leakage in the seal or the thermostat being stuck open.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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:
• For best results, perform at ambient temperature of –10
°
C (14
°
F) or higher.
• For best results, perform at engine coolant temperature of –10
°
C (14
°
F) to 56
°
C (133
°
F).
• Before performing the following procedure, do not add fuel.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1.
Turn A/C switch OFF.
2.
Turn blower fan switch OFF.
3.
Turn ignition switch ON.
4.
Select “COOLAN TEMP/S” in “DATA MONITOR” mode with CONSULT-III.
5.
Check the indication of “COOLAN TEMP/S”
If it is below 56
°
C (133
°
F), go to next step.
If it is above 56
°
C (133
°
F), cool down the engine to less than 56
°
C (133
°
F). Then go to next steps.
6.
Start engine.
7.
Drive vehicle for 10 consecutive minutes under the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “COOLAN TEMP/S” increases to more than 75
°
C (167
°
F) within 10 minutes, turn ignition switch
OFF because the test result will be OK.
8.
Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0128
Thermostat function
The engine coolant temperature does not reach
to specified temperature even though the en-
gine has run long enough.
• Thermostat
• Leakage from sealing portion of thermo-
stat
• Engine coolant temperature sensor
VHCL SPEED SE
More than 56 km/h (35 MPH)
P0128 THERMOSTAT FUNCTION
EC-181
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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Diagnosis Procedure
INFOID:0000000005536592
1.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
EC-181, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace engine coolant temperature sensor.
2.
CHECK THERMOSTAT
Check thermostat. Refer to
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace thermostat.
Component Inspection
INFOID:0000000005536593
1.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect engine coolant temperature sensor harness connector.
3.
Remove engine coolant temperature sensor.
4.
Check resistance between engine coolant temperature sensor
terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace engine coolant temperature sensor.
Terminals
Condition
Resistance (k
Ω
)
1 and 2
Temperature [
°
C (
°
F)]
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
JMBIA0080ZZ
EC-182
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0130, P0150 A/F SENSOR 1
P0130, P0150 A/F SENSOR 1
Description
INFOID:0000000005536594
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 addition, a heater is integrated in the
sensor to ensure the required operating temperature of approxi-
mately 800
°
C (1,472
°
F).
DTC Logic
INFOID:0000000005536595
DTC DETECTION LOGIC
To judge malfunctions, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 sig-
nal fluctuates according to fuel feedback control.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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 11 V at idle.
>> GO TO 2.
JMBIA0112GB
PBIB3354E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0130
Air fuel ratio (A/F) sensor 1
(bank 1) circuit
A)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly in a range other
than approx. 2.2 V.
• Harness or connectors
(The A/F sensor 1 circuit is open
or shorted.)
• A/F sensor 1
B)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 2.2 V.
P0150
Air fuel ratio (A/F) sensor 1
(bank 2) circuit
A)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly in a range other
than approx. 2.2 V.
• Harness or connectors
(The A/F sensor 1 circuit is open
or shorted.)
• A/F sensor 1
B)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 2.2 V.
P0130, P0150 A/F SENSOR 1
EC-183
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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2.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1.
Start engine and warm it up to normal operating temperature.
2.
Let engine idle for 2 minutes.
3.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO-1
>> With CONSULT-III: GO TO 3.
NO-2
>> With GST: GO TO 7.
3.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
1.
Start engine and warm it up to normal operating temperature.
2.
Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-III.
3.
Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.
Does the indication fluctuate around 2.2 V?
YES
>> GO TO 4.
NO
>> Go to
4.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I
1.
Select “A/F SEN1 (B1) P1276” (for DTC P0130) or “A/F SEN1 (B2) P1286” (for DTC P0150) of “A/F
SEN1” in “DTC WORK SUPPORT” mode with CONSULT-III.
2.
Touch “START”.
3.
When the following conditions are met, “TESTING” will be displayed on the CONSULT-III screen.
If “TESTING” is not displayed after 20 seconds, retry from step 2.
CAUTION:
Always drive vehicle at a safe speed.
Is “TESTING” displayed on CONSULT-III screen?
YES
>> GO TO 5.
NO
>> Check A/F sensor 1 function again. GO TO 3.
5.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-II
Release accelerator pedal fully.
NOTE:
Never apply brake when releasing the accelerator pedal.
Which does “TESTING” change to?
COMPLETED>>GO TO 6.
OUT OF CONDITION>>Retry DTC CONFIRMATION PROCEDURE. GO TO 4.
6.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III
Touch “SELF-DIAG RESULT”.
Which is displayed on CONSULT-III screen?
OK
>> INSPECTION END
NG
>> Go to
7.
PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B
Perform component function check. Refer to
EC-184, "Component Function Check"
.
NOTE:
Use component function check to check the overall function of the A/F sensor 1 circuit. During this check, a
1st trip DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
ENG SPEED
1,000 - 3,200 rpm
VHCL SPEED SE
More than 64 km/h (40 mph)
B/FUEL SCHDL
1.0 - 8.0 msec
Selector lever
D position
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