Infiniti Q45. Manual — part 507
DTC P2135 TP SENSOR
EC-667
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EC
Component Inspection
NBS0026J
THROTTLE POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Perform
EC-78, "Throttle Valve Closed Position Learning"
3.
Turn ignition switch ON.
4.
Set selector lever to D position.
5.
Check voltage between ECM terminals 50 (TP sensor 1 signal),
69 (TP sensor 2 signal) and ground under the following condi-
tions.
6.
If NG, replace electric throttle control actuator and go to the next
step.
7.
Perform
EC-78, "Throttle Valve Closed Position Learning"
8.
Perform
EC-78, "Idle Air Volume Learning"
Removal and Installation
NBS0026K
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to
Terminal
Accelerator pedal
Voltage
50
(Throttle position sensor 1)
Fully released
More than 0.36V
Fully depressed
Less than 4.75V
69
(Throttle position sensor 2)
Fully released
Less than 4.75V
Fully depressed
More than 0.36V
PBIB1530E
EC-668
DTC P2138 APP SENSOR
DTC P2138 APP SENSOR
PFP:18002
Component Description
NBS0026L
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor Mode
NBS0026M
Specification data are reference values.
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage.
On Board Diagnosis Logic
NBS0026N
This self-diagnosis has the one trip detection logic.
NOTE:
If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-492, "DTC P0643 SENSOR POWER SUPPLY"
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
PBIB1741E
MONITOR ITEM
CONDITION
SPECIFICATION
ACCEL SEN 1
●
Ignition switch: ON
(engine stopped)
Accelerator pedal: Fully released
0.5 - 1.0V
Accelerator pedal: Fully depressed
4.0 - 4.8V
ACCEL SEN 2*
●
Ignition switch: ON
(engine stopped)
Accelerator pedal: Fully released
0.3 - 1.2V
Accelerator pedal: Fully depressed
3.9 - 4.8V
CLSD THL POS
●
Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed
OFF
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2138
2138
Accelerator pedal posi-
tion sensor circuit
range/performance
Rationally incorrect voltage is sent to ECM
compared with the signals from APP sensor 1
and APP sensor 2.
●
Harness or connector
(The APP sensor 1 and 2 circuit is open
or shorted.)
(TP sensor circuit is shorted.)
●
Accelerator pedal position sensor 1 and
2
●
Electric throttle control actuator
(TP sensor 1 and 2)
Engine operating condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.
DTC P2138 APP SENSOR
EC-669
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EC
DTC Confirmation Procedure
NBS0026O
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and let it idle for 1 second.
4.
EC-671, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
EC-670
DTC P2138 APP SENSOR
Wiring Diagram
NBS0026P
TBWM1252E
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