Nissan Frontier D22. Instruction — part 412
DTC P0121 TP SENSOR
EC-751
[VG33E]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Component Inspection
UBS00DH0
THROTTLE POSITION SENSOR
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine (ignition switch OFF).
3.
Turn ignition switch ON.
4.
Select “DATA MONITOR” mode with CONSULT-II.
5.
Check voltage of “THRTL POS SEN” under the following condi-
tions.
Voltage measurement must be made with throttle position
sensor installed in vehicle.
With GST
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine (ignition switch OFF).
3.
Turn ignition switch ON.
4.
Check voltage between ECM terminal 23 (Throttle position sensor signal) and ground.
Voltage measurement must be made with throttle position sensor installed in vehicle.
Throttle valve conditions
THRTL POS SEN
Completely closed (a)
0.15 - 0.85V
Partially open
Between (a) and (b)
Completely open (b)
3.5 - 4.7V
SEF719Y
Throttle valve conditions
Voltage [V]
Completely closed
0.15 - 0.85 (a)
Partially open
Between (a) and (b)
Completely open
3.5 - 4.7 (b)
EC-752
[VG33E]
DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
PFP:16119
Component Description
UBS00DH1
NOTE:
If DTC P0122, P0123 is displayed with DTC P0510, first perform the trouble diagnosis for DTC P0510.
Refer to
.
The throttle position sensor responds to the accelerator pedal movement. This sensor is a kind of potentiome-
ter which transforms the throttle position into output voltage, and emits the voltage signal to the ECM. In addi-
tion, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the
ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sen-
sor. This sensor controls engine operation such as fuel cut. On the other hand, the “Wide open and closed
throttle position switch”, which is built into the throttle position sensor unit, is not used for engine control.
CONSULT-II Reference Value in Data Monitor Mode
UBS00DH2
Specification data are reference values.
On Board Diagnosis Logic
UBS00DH3
these self-diagnoses have one trip detection logic.
SEF349X
MONITOR ITEM
CONDITION
SPECIFICATION
THRTL POS SEN
●
Engine: After warming up, idle the
engine
Throttle valve: fully closed
0.15 - 0.85V
●
Engine: After warming up
●
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
3.5 - 4.7V
ABSOL TH·P/S
●
Engine: After warming up
●
Ignition switch: ON
●
More than -40.0 kpa (-300 mmHg,
-11.81 inHg) of vacuum is applied
to the throttle opener with a hand
vacuum pump.
Throttle valve: fully closed
0.0%
●
Engine: After warming up
●
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
Approx. 80%
DTC P0122, P0123 TP SENSOR
EC-753
[VG33E]
C
D
E
F
G
H
I
J
K
L
M
A
EC
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure
UBS00DH4
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.
CAUTION:
Always drive vehicle at a safe speed.
TESTING CONDITION:
●
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
●
This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1.
Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2.
Start engine and maintain the following conditions for at least 5
consecutive seconds.
3.
If DTC is detected, go to
EC-755, "Diagnostic Procedure"
WITH GST
Follow the procedure “WITH CONSULT-II”.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0122
Throttle position sensor
circuit low input
An excessively low voltage from the sensor is
sent to ECM
●
Harness or connectors
(The TP sensor circuit is open or
shorted.)
●
TP sensor
P0123
Throttle position sensor
circuit high input
An excessively high voltage from the sensor is
sent to ECM
Detected items
Engine operating condition in fail-safe mode
Throttle position sensor
circuit
Throttle position will be determined based on the injected fuel amount and the engine speed.
Therefore, acceleration will be poor.
Condition
Driving condition
When engine is idling
Normal
When accelerating
Poor acceleration
Vehicle speed
More than 5 km/h (3 MPH)
Selector lever
Suitable position except P or N (A/T), Neutral (M/T) position
SEF065Y
EC-754
[VG33E]
DTC P0122, P0123 TP SENSOR
Wiring Diagram
UBS00DH5
BBWA0473E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст