2011 NISSAN LATIO sensor

EC-980
< SERVICE INFORMATION >[MR18DE]
DTC P2135 TP SENSOR
1. Disconnect electric throttle control actuator (1) harness connec-
tor.
- : Vehicle front
2. Turn ignition switch ON.
3. Check voltage between electric throttle control actuator terminal 2 and ground with CONSULT-III 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. Disconnect ECM harness connector.
3. Check harness continuity between electric thrott le control actuator terminal 4 and ECM terminal 36.
Refer to Wiring Diagram.
4. 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.
4.CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between the following; electric throttle control actuator terminal 1 and ECM terminal 33,
electric throttle control actuator terminal 3 and ECM terminal 34.
Refer to Wiring Diagram.
2. 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-981, "
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-580, "
Throttle Valve Closed Position Learning".
PBIB3325E
Voltage: Approximately 5 V
PBIB3311E
Continuity should exist.
Continuity should exist.
Revision: May 2010 2011 Versa

DTC P2135 TP SENSOREC-981
< SERVICE INFORMATION > [MR18DE]
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3. Perform
EC-580, "Idle Air Volume Learning".
>> INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to EC-632
.
>> INSPECTION END
Component InspectionINFOID:0000000006342202
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform EC-580, "
Throttle Valve Closed Position Learning".
3. Turn ignition switch ON.
4. Set shift lever to D position (A/T, CVT) or 1st position (M/T).
5. Check voltage between ECM terminals 33 (TP sensor 1 signal), 34 (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-580, "
Throttle Valve Closed Position Learning".
8. Perform EC-580, "
Idle Air Volume Learning".
Removal and InstallationINFOID:0000000006342203
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-137, "Removal and Installation".
Terminal Accelerator pedal Voltage
33
(Throttle position sensor 1) Fully released
More than 0.36 V
Fully depressed Less than 4.75 V
34
(Throttle position sensor 2) Fully released
Less than 4.75 V
Fully depressed More than 0.36 V
PBIB3038E
Revision: May 2010 2011 Versa

EC-982
< SERVICE INFORMATION >[MR18DE]
DTC P2138 APP SENSOR
DTC P2138 APP SENSOR
Component DescriptionINFOID:0000000006342204
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-III Reference Value in Data Monitor ModeINFOID:0000000006342205
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 Diagn
osis LogicINFOID:0000000006342206
This self-diagnosis has the one trip detection logic.
NOTE:
If DTC P2138 is displayed with DTC P0643, firs t perform the trouble diagnosis for DTC P0643.
Refer to EC-898
.
FA I L - S A F E M O D E
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
0.6 - 0.9 V
Accelerator pedal: Fully depressed 4.0 - 4.8 V
ACCEL SEN 2* • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released
0.6 - 0.9 V
Accelerator pedal: Fully depressed 3.9 - 4.8 V
CLSD THL POS • Ignition switch: ON
(Engine stopped) Accelerator pedal:
Fully released ON
Accelerator pedal: Slightly depressed OFF
DTC No. Trouble diagnosis nameDTC detecting condition Possible cause
P2138
2138 Accelerator pedal posi-
tion sensor circuit range/
performance Rationally incorrect voltage is sent to ECM
compared with the sign
als from APP sensor 1
and APP sensor 2. • Harness or connector
(APP sensor 1 and 2 circuit is open or
shorted.)
[Crankshaft position sensor (POS) circuit
is shorted.]
(EVAP control system pressure sensor
circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
• Accelerator pedal position sensor (APP sensor 1 and 2)
• Crankshaft position sensor (POS)
• EVAP control system pressure sensor
• Refrigerant pressure sensor
Revision: May 2010 2011 Versa

DTC P2138 APP SENSOREC-983
< SERVICE INFORMATION > [MR18DE]
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DTC Confirmation ProcedureINFOID:0000000006342207
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 8 V at idle.
1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to EC-985, "
Diagnosis Procedure".
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.
Revision: May 2010 2011 Versa

EC-984
< SERVICE INFORMATION >[MR18DE]
DTC P2138 APP SENSOR
Wiring Diagram
INFOID:0000000006342208
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. Doi ng so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
BBWA3075E
Revision: May 2010 2011 Versa

DTC P2138 APP SENSOREC-985
< SERVICE INFORMATION > [MR18DE]
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Diagnosis ProcedureINFOID:0000000006342209
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-638, "
Ground Inspection".
TER-
MI-
NAL
NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
74 W Sensor power supply
(Refrigerant pressure sen-
sor)
[Ignition switch: ON]
Approximately 5 V
75 BR Sensor power supply
[Crankshaft position sensor
(POS)] [Ignition switch: ON]
Approximately 5 V
76 W EVAP control system pres-
sure sensor power supply [Ignition switch: ON]
Approximately 5 V
102 SB Sensor power supply
(APP sensor 2)
[Ignition switch: ON]
Approximately 5 V
103 GR Accelerator pe
dal position
sensor 2 [Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released
0.3 - 0.6 V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed 1.95 - 2.4 V
104 Y Sensor ground
(APP sensor 2) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
106 P Sensor power supply
(APP sensor 1) [Ignition switch: ON]
Approximately 5 V
11 0 G Accelerator pe
dal position
sensor 1 [Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released
0.6 - 0.9 V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed 3.9 - 4.7 V
111 R Sensor ground
(APP sensor 1) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: May 2010 2011 Versa

EC-986
< SERVICE INFORMATION >[MR18DE]
DTC P2138 APP SENSOR
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor (1) harness connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 4 and ground with CONSULT-III 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 APP SENSOR 2 POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between APP sensor terminal 5 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 4.
4.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 5 and ECM terminal 102. Refer to Wiring Diagram.
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 COMPONENTS POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
BBIA0705E
Voltage: Approximately 5 V
PBIA9606J
Voltage: Approximately 5 V
PBIA9607J
Continuity should exist.
Revision: May 2010 2011 Versa

DTC P2138 APP SENSOREC-987
< SERVICE INFORMATION > [MR18DE]
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OK or NG
OK >> GO TO 6.
NG >> Repair short to ground or short to power in harness or connectors.
6.CHECK COMPONENTS
Check the following.
• Crankshaft position sensor (POS) (Refer to EC-798, "
Component Inspection".)
• EVAP control system pressure sensor (Refer to EC-850, "
Component Inspection".)
• Refrigerant pressure sensor (Refer to MTC-38, "
Magnet Clutch Circuit (If Equipped)".)
OK or NG
OK >> GO TO 11.
NG >> Replace malfunctioning component.
7.CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following; ECM terminal 111 and APP sensor terminal 2,
ECM terminal 104 and APP sensor terminal 1.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between the following; ECM terminal 110 and APP sensor terminal 3,
ECM terminal 103 and APP sensor terminal 6.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK APP SENSOR
Refer to EC-988, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-580, "
Accelerator Pedal Released Position Learning".
3. Perform EC-580, "
Throttle Valve Closed Position Learning".
4. Perform EC-580, "
Idle Air Volume Learning".
ECM terminal Sensor terminalReference Wiring Diagram
74 Refrigerant pressure sensor terminal 3 EC-1029, "
Wiring Diagram"
75Crankshaft position sensor (POS) terminal 1 EC-794, "Wiring Diagram"
76EVAP control system pressure sensor terminal 3 EC-853, "Wiring Diagram"
102APP sensor terminal 5 EC-984, "Wiring Diagram"
Continuity should exist.
Continuity should exist.
Revision: May 2010 2011 Versa