Nissan Maxima. Manual — part 433
EC-216
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0128 THERMOSTAT FUNCTION
Drive the vehicle under the conditions instructed below until the difference between “COOLAN TEMP/S” and
“FUEL T/TMP SE” becomes at least 25
°C (45°F).
*: Example
-
STEP 2
Drive the vehicle at 50 km/h (32 MPH) or more with the difference between “COOLAN TEMP/S” and “FUEL
T/TMP SE” maintained at 25
°C (45°F) or more.
NOTE:
Keep the accelerator pedal as steady as possible during cruising.
-
STEP 3
Drive the vehicle at 50 km/h (32 MPH) or more until “COOLAN TEMP/S” increases by 7
°C (13°F).
NOTE:
Keep the accelerator pedal as steady as possible during cruising.
Is the condition satisfied?
YES
>> GO TO 4.
NO
>> GO TO 1.
4.
PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT
1. Drive the vehicle until the following condition is satisfied.
CAUTION:
Always drive vehicle at safe speed.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010094927
1.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
EC-216, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace engine coolant temperature sensor. Refer to
CO-24, "Removal and Installation"
2.
CHECK THERMOSTAT
Check thermostat. Refer to
CO-22, "Removal and Installation"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace thermostat. Refer to
CO-22, "Removal and Installation"
Component Inspection
INFOID:0000000010094928
1.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
COOLAN TEMP/S
71
°C (159°F) or less
FUEL T/TMP SE
Less than the value calculated by sub-
tracting 25
°C (45°F) from “COOLAN
TEMP/S”.*
COOLAN TEMP/S
FUEL T/TMP SE
70
°C (158°F)
45
°C (113°F) or less
65
°C (149°F)
40
°C (104°F) or less
60
°C (140°F)
35
°C (95°F) or less
COOLAN TEMP/S
71
°C (159°F) or more
P0128 THERMOSTAT FUNCTION
EC-217
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature sensor harness connector.
3. Remove engine coolant temperature sensor. Refer to
CO-24, "Removal and Installation"
.
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. Refer to
CO-24, "Removal and Installation"
.
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
PBIB2005E
EC-218
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0130, P0150 A/F SENSOR 1
P0130, P0150 A/F SENSOR 1
Description
INFOID:0000000010094929
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 via 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 about 800
°C
(1,472
°F).
DTC Logic
INFOID:0000000010094930
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 sensor 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.
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-219
< 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 it idle for 2 minutes.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO-1 >> With CONSULT: GO TO 3.
NO-2 >> Without CONSULT: 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.
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.
2. Touch “START”.
3. When the following conditions are met, “TESTING” will be displayed on the CONSULT 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 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 screen?
OK
>> INSPECTION END
NG
>> Go to
7.
PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B
Perform component function check. Refer to
EC-220, "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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