2001 NISSAN X-TRAIL sensor

EC-648
[QR25(WITHOUT EURO-OBD)]
DTC P2135 TP SENSOR
Diagnostic Procedure
EBS00NJV
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch “ON”.
3. Check voltage between electric throttle control actuator terminal
1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between electric throttle control actuator terminal 5 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB0925E
PBIB0497E
Voltage: Approximately 5V
PBIB0082E
Continuity should exist.

DTC P2135 TP SENSOR
EC-649
[QR25(WITHOUT EURO-OBD)]
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4.CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 73 and electric throttle control actuator terminal 4, ECM
terminal 74 and electric throttle control actuator terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK THROTTLE POSITION SENSOR
Refer to EC-650, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-449, "
Throttle Valve Closed Position Learning" .
3. Perform EC-450, "
Idle Air Volume Learning" .
>>INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to EC-506, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.

EC-650
[QR25(WITHOUT EURO-OBD)]
DTC P2135 TP SENSOR
Component Inspection
EBS00NJW
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform EC-449, "
Throttle Valve Closed Position Learning" .
3. Turn ignition switch “ON”.
4. Set selector lever to “D” position (A/T models) or “1st” position (M/T models).
5. Check voltage between ECM terminals 73 (TP sensor 1), 74 (TP
sensor 2) and engine ground under the following conditions.
6. If NG, replace electric throttle control actuator and go to the next
step.
7. Perform EC-449, "
Throttle Valve Closed Position Learning" .
8. Perform EC-450, "
Idle Air Volume Learning" .
Remove and InstallationEBS00NJX
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-16, "INTAKE MANIFOLD" .
Terminal Accelerator pedal Voltage
73
(Throttle position sensor 1)Fully released More than 0.36V
Fully depressed Less than 4.75V
74
(Throttle position sensor 2)Fully released Less than 4.75V
Fully depressed More than 0.36V
PBIB0559E

DTC P2138 APP SENSOR
EC-651
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DTC P2138 APP SENSORPFP:18002
Component DescriptionEBS00NJY
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 ModeEBS00NJZ
Specification data are reference values.
*:Accelerator pedal position sensor 2 signal is converted by ECM. Thus, it differs from ECM terminal voltage.
ECM Terminals and Reference ValueEBS00NK0
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 ECM terminals, such as the ground.
PBIB0146E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN1
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.41 - 0.72V
Accelerator pedal: Fully depressed 3.2 - 4.9V
ACCEL SEN2*
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.15 - 0.98V
Accelerator pedal: Fully depressed 2.98 - 4.9V
CLSD THL POS
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
58 B Sensors' ground[Engine is running]
●Warm-up condition
●Idle speedApproximately 0V
64 OR/LAccelerator pedal position
sensor 2 power supply[Ignition switch “ON”]Approximately 2.5V
65 R Sensor's power supply[Ignition switch “ON”]Approximately 5V
75 R/LAccelerator pedal position
sensor 1[Ignition switch “ON”]
●Engine stopped
●Accelerator pedal fully released0.41 - 0.72V
[Ignition switch “ON”]
●Engine stopped
●Accelerator pedal fully depressedMore than 3.2V

EC-652
[QR25(WITHOUT EURO-OBD)]
DTC P2138 APP SENSOR
On Board Diagnosis Logic
EBS00NK1
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00NK2
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. If DTC is detected, go to EC-654, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine and let it idle for 1 second.
2. Turn ignition switch “OFF”, wait at least 10 seconds and then turn “ON”.
3. Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
4. If DTC is detected, go to EC-654, "
Diagnostic Procedure" .
76 W/BAccelerator pedal position
sensor 2[Ignition switch “ON”]
●Engine stopped
●Accelerator pedal fully released0.15 - 0.48V
[Ignition switch “ON”]
●Engine stopped
●Accelerator pedal fully depressedMore than 1.49V
86 LAccelerator pedal position
sensor 2 ground[Ignition switch “ON”]Approximately 0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2138
2138Accelerator pedal position
sensor circuit range/perfor-
mance problemRationally 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.)
●Accelerator pedal position 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.
SEF058Y

DTC P2138 APP SENSOR
EC-653
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Wiring DiagramEBS00NK3
TBWA0325E

EC-654
[QR25(WITHOUT EURO-OBD)]
DTC P2138 APP SENSOR
Diagnostic Procedure
EBS00NK4
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch “ON”.
3. Check voltage between APP sensor terminals 4, 6 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, F41
●Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB0925E
PBIB0498E
APP sensor terminal Voltage (V)
4 Approximately 2.5
6 Approximately 5
PBIB0560E

DTC P2138 APP SENSOR
EC-655
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4.CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between APP sensor terminal 1, 3 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, F41
●Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 75 and APP sensor terminal 5, ECM terminal 76 and
APP sensor terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, F41
●Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK APP SENSOR
Refer to EC-656, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-449, "
Accelerator Pedal Released Position Learning" .
>>INSPECTION END Continuity should exist.
Continuity should exist.