Nissan Frontier D22. Instruction — part 270
DTC P0127 IAT SENSOR
EC-183
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E43, M65
●
Harness connectors M81, F36
●
Harness for open or short between ECM and intake air temperature sensor
>> Repair open circuit or short to power in harness or connectors.
5.
CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to
EC-183, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> Replace intake air temperature sensor.
6.
CHECK INTERMITTENT INCIDENT
Perform
EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Component Inspection
UBS00D3P
INTAKE AIR TEMPERATURE SENSOR
1.
Check resistance between intake air temperature sensor termi-
nals 1 and 2 as shown in the figure.
<Reference data>
2.
If NG, replace intake air temperature sensor.
PBIB0081E
Temperature
°C (°F)
Resistance
k
Ω
20 (68)
2.1 - 2.9
80 (176)
0.27 - 0.38
SEF012P
EC-184
[KA24DE]
DTC P0128 THERMOSTAT FUNCTION
DTC P0128 THERMOSTAT FUNCTION
PFP:21200
On Board Diagnosis Logic
UBS00D3Q
Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long
enough.
This is due to a leak in the seal or the thermostat stuck open.
DTC Confirmation Procedure
UBS00D3R
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.
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 60°C (140°F).
WITH CONSULT-II
1.
Replace thermostat with new one. Refer to
. Use only a genuine NISSAN ther-
mostat as a replacement. If an incorrect thermostat is used, the MIL may come on.
2.
Turn ignition switch “ON”.
3.
Select “COOLAN TEMP/S” in “DATA MONITOR” mode with
CONSULT-II.
4.
Check that the “COOLAN TEMP/S” is above 60
°C (140°F).
If it is below 60
°C (140°F), go to following step.
If it is above 60
°C (140°F), stop engine and cool down the
engine to less than 60
°C (140°F), then retry from step 1.
5.
Drive vehicle for 10 consecutive minutes under the following
conditions.
If 1st trip DTC is detected, go to
EC-185, "Diagnostic Procedure"
.
WITH GST
1.
Follow the procedure “WITH CONSULT-II” above.
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 engine has run long enough.
●
Thermostat
●
Leakage from sealing portion of thermostat
●
Engine coolant temperature sensor
VHCL SPEED SE
80 - 120 km/h (50 - 75 MPH)
PBIB1917E
DTC P0128 THERMOSTAT FUNCTION
EC-185
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Diagnostic Procedure
UBS00D3S
1.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
1.
Turn ignition switch OFF.
2.
Remove engine coolant temperature sensor.
3.
Check resistance between engine coolant temperature sensor terminals under the following conditions.
OK or NG
OK
>> INSPECTION END.
NG
>> Replace engine coolant temperature sensor.
SEF304X
EC-186
[KA24DE]
DTC P0132 HO2S1
DTC P0132 HO2S1
PFP:22690
Component Description
UBS00D3T
The heated oxygen sensor 1 is placed into the exhaust manifold. It
detects the amount of oxygen in the exhaust gas compared to the
outside air. The heated oxygen sensor 1 has a closed-end tube
made of ceramic zirconia. The zirconia generates voltage from
approximately 1V in richer conditions to 0V in leaner conditions. The
heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts
the injection pulse duration to achieve the ideal air-fuel ratio. The
ideal air-fuel ratio occurs near the radical change from 1V to 0V.
CONSULT-II Reference Value in Data Monitor Mode
UBS00D3U
Specification data are reference values.
On Board Diagnosis Logic
UBS00D3V
To judge the malfunction, the diagnosis checks that the heated oxy-
gen sensor 1 output is not inordinately high.
SEF463R
SEF288D
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S1 (B1)
●
Engine: After warming up
Maintaining engine speed at 2,000
rpm
0 - 0.3V
←→ Approx. 0.6 - 1.0V
HO2S1 MNTR
(B1)
LEAN
←→ RICH
Changes more than 5 times during
10 seconds.
PBIB1877E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0132
Heated oxygen sensor
1 circuit high voltage
An excessively high voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted)
●
Heated oxygen sensor 1
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст