Nissan Frontier D22. Instruction — part 562
DTC P0121 TP SENSOR
EC-1351
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
On Board Diagnosis Logic
UBS00DU5
DTC Confirmation Procedure
UBS00DU6
NOTE:
●
Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, per-
form PROCEDURE FOR MALFUNCTION B.
●
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 5 seconds before conducting the next test.
PROCEDURE FOR MALFUNCTION A
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and let it idle for at least 10 seconds.
If idle speed is over 1,000 rpm, maintain the following conditions
for at least 10 seconds to keep engine speed below 1,000 rpm.
4.
If 1st trip DTC is detected, go to
With GST
Follow the procedure “With CONSULT-II”.
PROCEDURE FOR MALFUNCTION B
CAUTION:
Always drive vehicle at a safe speed.
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 5 seconds.
3.
Turn ignition switch ON.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0121
Throttle position sensor cir-
cuit range/performance prob-
lem
A)
A high voltage from the sensor is
sent to ECM under light load driving
condition.
●
Harness or connectors
(The TP sensor circuit is open or
shorted.)
●
TP sensor
●
Fuel injector
●
Camshaft position sensor
●
Mass air flow sensor
B)
A low voltage from the sensor is
sent to ECM under heavy load driv-
ing condition.
●
Harness or connectors
(The TP sensor circuit is open or
shorted.)
●
Intake air leaks
●
TP sensor
Selector lever
Suitable position except P or N
Brake pedal
Depressed
Vehicle speed
0 km/h (0 MPH)
SEF058Y
EC-1352
[VG33ER]
DTC P0121 TP SENSOR
4.
Select “MANU TRIG” in “DATA MONITOR” mode with CON-
SULT-II.
5.
Select “THRTL POS SEN” and “ABSOL TH·P/S” in “DATA MON-
ITOR” mode with CONSULT-II.
6.
Press RECORD on CONSULT-II screen at the same time accel-
erator pedal is depressed.
7.
Print out the recorded graph and check the following:
–
The voltage rise is linear in response to accelerator pedal
depression.
–
The voltage when accelerator pedal is fully depressed is approx-
imately 4V.
If NG, go to
EC-1354, "Diagnostic Procedure"
If OK, go to following step.
8.
Select “AUTO TRIG” in “DATA MONITOR” mode with CON-
SULT-II.
9.
Maintain the following conditions for at least 10 consecutive sec-
onds.
10. If 1st trip DTC is detected, go to
EC-1354, "Diagnostic Procedure"
With GST
Follow the procedure “With CONSULT-II”.
CMPS·RPM (REF)
More than 2,000 rpm
MAS AIR/FL SE
More than 3V
COOLAN TEMP/S
More than 70
°C (158°F)
IACV-AAC/V
Less than 80%
Selector lever
Suitable position
Driving location
Driving vehicle uphill (Increased engine load) will
help maintain the driving conditions required for
this test.
SEF177Y
SEF174Z
SEF805Z
DTC P0121 TP SENSOR
EC-1353
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
UBS00DU7
BBWA0473E
EC-1354
[VG33ER]
DTC P0121 TP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than the ECM terminals, such as the ground.
Diagnostic Procedure
UBS00DU8
1.
INSPECTION START
Which malfunction (A or B) is duplicated?
A or B
A
>> GO TO 4.
B
>> GO TO 2.
2.
ADJUST THROTTLE POSITION SENSOR
Check the following items. Refer to
>> GO TO 3.
3.
CHECK INTAKE SYSTEM.
1.
Turn ignition switch OFF.
2.
Check the following for connection.
–
Air duct
–
Vacuum hoses
–
Intake air passage between air duct to intake manifold collector
OK or NG
OK
>> GO TO 4.
NG
>> Reconnect the parts.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
23
L
Throttle position sensor
[Engine is running]
●
Warm-up condition
●
More than -40.0 kpa (-300 mmHg, -11.81 inHg)
of vacuum is applied to the throttle opener with
a hand vacuum pump
●
Accelerator pedal is fully released
0.15 - 0.85V
[Ignition switch: ON]
●
Engine stopped
●
Accelerator pedal is fully depressed
3.5 - 4.7V
42
B/W
Sensor power supply
[Ignition switch: ON]
Approximately 5V
43
BR
Sensor ground
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
Items
Specifications
Ignitions timing
10
° ± 5° BTDC
Base idle speed
700
± 50 rpm (in P or N position)
Closed throttle position switch idle
position adjustment
Feeler gauge thickness and switch
condition
0.3 mm (0.012 in): ON
0.4 mm (0.016 in): OFF
Target idle speed
750
± 50 rpm (in P or N position)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст