check engine NISSAN LATIO 2011 Service Repair Manual

EC-960
< SERVICE INFORMATION >[MR18DE]
DTC P2118 THROTTLE CONTROL MOTOR
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis ProcedureINFOID:0000000006342173
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten engine screw on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
TERMI-
NAL
NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
1L Throttle control motor
(Open) [Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressed Approximately 3.2 V
2SB Throttle contro
l motor power
supply [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
4 P Throttle contro l motor (Close)[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully released Approximately 1.8 V
15 Y Throttle control motor relay [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON] 0 - 1.0 V
PBIA8150J
PBIA8149J
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: May 2010 2011 Versa

DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOREC-963
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
Component DescriptionINFOID:0000000006342176
Electric throttle control actuator consists of throttle control mo
tor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throt-
tle valve and feeds the voltage signals to the ECM. T he ECM judges the current opening angle of the throttle
valve from these signals and the ECM controls the thrott le control motor to make the throttle valve opening
angle properly in response to driving condition.
On Board Diagnosis LogicINFOID:0000000006342177
This self-diagnosis has the on e trip detection logic.
FA I L - S A F E M O D E
When the malfunction is detected, ECM ent ers fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureINFOID:0000000006342178
NOTE:
•Perform PROCEDURE FOR MALFUNCTION A AND B first. If the DTC cannot be confirmed, perform
PROCEDURE FOR MALFUNCTION C.
• If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR MALFUNCTION A AND B
1. Turn ignition switch ON and wait at least 1 second.
2. Set shift lever to D position (A/T, CVT) or 1st position (M/T), and wait at least 3 seconds.
3. Set shift lever to P position (A/T, CVT) or Neutral position (M/T).
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON and wait at least 1 second.
6. Set shift lever to D position (A/T, CVT) or 1st position (M/T), and wait at least 3 seconds.
7. Set shift lever to P position (A/T, CVT) or Neutral position (M/T).
8. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
9. Check DTC.
10. If DTC is detected, go to EC-964, "
Diagnosis Procedure".
PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Set shift lever to D position (A/T, CVT) or 1st position (M/T) and wait at least 3 seconds.
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P2119
2119 Electric throttle control
actuator A)
Electric throttle control actuator does not func-
tion properly due to the return spring malfunc-
tion.
• Electric throttle control actuator
B) Throttle valve opening angle in fail-safe mode is
not in specified range.
C) ECM detects the throttle valve is stuck open.
Detected items Engine operating condition in fail-safe mode
Malfunction A ECM controls the electric throttle actuator by regulating the throttle opening around the idle position. The
engine speed will not rise more than 2,000 rpm.
Malfunction B ECM controls the electric throttle control actuator by regulating the throttle opening to 20 degrees or less.
Malfunction C While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the engine stalls.
The engine can restart in N or P position (A/T, CVT), neutral (M/T), and engine speed will not exceed 1,000
rpm or more.
Revision: May 2010
2011 Versa

EC-964
< SERVICE INFORMATION >[MR18DE]
DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
3. Set shift lever to N, P position (A/T, CVT) or Neutral (M/T) position.
4. Start engine and let it idle for 3 seconds.
5. Check DTC.
6. If DTC is detected, go to
EC-964, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006342179
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if a foreign matter is caught between the throttle valve (1) and the housing.
- : Vehicle front
OK or NG
OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle control actuator inside.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-580, "
Throttle Valve Closed Position Learning".
3. Perform EC-580, "
Idle Air Volume Learning".
>> INSPECTION END
BBIA0711E
Revision: May 2010 2011 Versa

EC-966
< SERVICE INFORMATION >[MR18DE]
DTC P2122, P2123 APP SENSOR
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-967, "
Diagnosis Procedure".
Wiring DiagramINFOID:0000000006342184
BBWA2652E
Revision: May 2010 2011 Versa

DTC P2122, P2123 APP SENSOREC-967
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
Diagnosis ProcedureINFOID:0000000006342185
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
TER- MI-
NAL
NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
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

DTC P2127, P2128 APP SENSOREC-971
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
DTC Confirmation ProcedureINFOID:0000000006342191
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-973, "
Diagnosis Procedure".
Revision: May 2010 2011 Versa

DTC P2127, P2128 APP SENSOREC-973
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Diagnosis ProcedureINFOID:0000000006342193
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 F93. Engine ground F16
4. Body ground E15
BBIA0698E
Revision: May 2010 2011 Versa

DTC P2135 TP SENSOREC-977
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
DTC P2135 TP SENSOR
Component DescriptionINFOID:0000000006342196
Electric throttle control actuator
consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. In addition,
these sensors detect the opening and closing speed of the throttle
valve and feed the voltage signals to the ECM. The ECM judges the
current opening angle of the throttle valve from these signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000006342197
Specification data are reference values.
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.
On Board Diagnosis LogicINFOID:0000000006342198
This self-diagnosis has the on e trip detection logic.
NOTE:
If DTC P2135 is displayed with DTC P0643, first 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 detec ted, the ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureINFOID:0000000006342199
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.
PBIB0145E
Monitor item Condition Specification
TP SEN 1-B1
TP SEN 2-B1* • Ignition switch: ON
(Engine stopped)
• Shift lever: D (A/T, CVT),
1st (M/T) Accelerator pedal: Fully released
More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2135
2135 Throttle position sensor
circuit range/performance Rationally incorrect voltage is sent to ECM
compared with the signals from TP sensor 1
and TP sensor 2. • Harness or connector
(TP sensor 1 and 2 circuit is open or short-
ed.)
• Electric throttle control actuator (TP sensor 1 and 2)
Engine operation 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

DTC P2135 TP SENSOREC-979
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
Diagnosis ProcedureINFOID:0000000006342201
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT
TER- MI-
NAL NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
33 LG Throttle position sensor 1 [Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully released
More than 0.36 V
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressed Less than 4.75 V
34 O Throttle position sensor 2 [Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully released
Less than 4.75 V
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (A/T, CVT), 1st (M/T)
• Accelerator pedal: Fully depressed More than 0.36 V
36 Y Sensor ground
(Throttle position sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
72 V Sensor power supply
(Throttle position sensor) [Ignition switch: ON]
Approximately 5 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

DTC P2138 APP SENSOREC-983
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
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