engine control NISSAN TIIDA 2011 Service Repair Manual

EC-400
< COMPONENT DIAGNOSIS >[HR16DE]
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
DescriptionINFOID:0000000005930079
Electric throttle control actuator consists of th
rottle control motor, 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 valv e position, and feeds the voltage signal to the ECM. The
ECM judges the current opening angle of the throttle valve and controls the throttle valve opening angle in
response to driving conditions via the throttle control motor.
DTC LogicINFOID:0000000005930080
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1. Turn ignition switch ON and wait at least 1 second.
2. Set selector lever to D (A/T) or 1st (M/T) position and wait at least 3 seconds.
3. Set selector lever to P (A/T) or Neutral (M/T) position.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON and wait at least 1 second.
6. Set selector lever to D (A/T) or 1st (M/T) position and wait at least 3 seconds.
7. Set selector lever to P (A/T) or Neutral (M/T) position.
8. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
9. Check DTC.
Is DTC detected?
YES >> Go to EC-400, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Set selector lever to D (A/T) or 1st (M/T) position and wait at least 3 seconds.
3. Set selector lever to P (A/T) or Neutral (M/T) position.
4. Start engine and let it idle for 3 seconds.
5. Check DTC.
Is DTC detected?
YES >> Go to EC-400, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006141000
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P2119 Electric throttle control
actuator A
Electric throttle control actuator does not function
properly due to the return spring malfunction.
• Electric throttle control actuator
B Throttle valve opening angle in fail-safe mode is
not in specified range.
C ECM detect the throttle valve is stuck open.
Revision: May 2010 2011 Versa

EC-402
< COMPONENT DIAGNOSIS >[HR16DE]
P2122, P2123 APP SENSOR
P2122, P2123 APP SENSOR
DescriptionINFOID:0000000005930083
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 potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signal 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 operation such as fuel cut.
DTC LogicINFOID:0000000005930084
DTC DETECTION LOGIC
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the tro\
ubl
e diagnosis for DTC P0643.
Refer to EC-362, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-403, "Diagnosis Procedure".
NO >> INSPECTION END
PBIB1741E
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P2122 Accelerator pedal position
sensor 1 circuit low input An excessively low
voltage from the APP
sensor 1 is sent to ECM. • Harness or connectors
(APP sensor 1 circuit is open or shorted.)
• Accelerator pedal position sensor
(APP sensor 1)
P2123 Accelerator pedal position
sensor 1 circuit high input An excessively high voltage from the APP
sensor 1 is sent to ECM.
Revision: May 2010
2011 Versa

EC-406
< COMPONENT DIAGNOSIS >[HR16DE]
P2127, P2128 APP SENSOR
P2127, P2128 APP SENSOR
DescriptionINFOID:0000000006140995
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 potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signal 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 operation such as fuel cut.
DTC LogicINFOID:0000000005930090
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-407, "Diagnosis Procedure".
NO >> INSPECTION END
PBIB1741E
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P2127 Accelerator pedal position
sensor 2 circuit low input An excessively low voltage from the APP
sensor 2 is sent to ECM. • Harness or connectors
(APP sensor 2 circuit is open or shorted.)
[Crankshaft position sensor (POS) circuit
is shorted.]
(Refrigerant pressure sensor circuit is
shorted.)
(EVAP control system pressure sensor
circuit is shorted.)
• Accelerator pedal position sensor (APP sensor 2)
• Crankshaft position sensor (POS)
• Refrigerant pressure sensor
• EVAP control system pressure sensor
P2128
Accelerator pedal position
sensor 2 circuit high input An excessively high
voltage from the APP
sensor 2 is sent to ECM.
Revision: May 2010 2011 Versa

P2135 TP SENSOREC-411
< COMPONENT DIAGNOSIS > [HR16DE]
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P2135 TP SENSOR
DescriptionINFOID:0000000006140992
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 potentiometer which transform the throttle valve position into
output voltage, and emit the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve opening angle in response to
driving conditions via the throttle control motor.
DTC LogicINFOID:0000000005930096
DTC DETECTION LOGIC
NOTE:
If DTC P2135 is displayed with DTC P0643, first pe rform the trouble diagnosis for DTC P0643. Refer to
EC-362, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-412, "Diagnosis Procedure".
NO >> INSPECTION END
PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2135 Throttle position sensor
circuit range/perfor-
mance 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 or 2 circuit is open or shorted.)
• Electric throttle control actuator (TP sensor 1 or 2)
Revision: May 2010 2011 Versa

P2138 APP SENSOREC-415
< COMPONENT DIAGNOSIS > [HR16DE]
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P2138 APP SENSOR
DescriptionINFOID:0000000006140989
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 potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signal 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 accelerato
r pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The
ECM uses this signal for the engine operation such as fuel cut.
DTC LogicINFOID:0000000005930102
DTC DETECTION LOGIC
NOTE:
If DTC P2138 is displayed with DTC P0643, first pe rform the trouble diagnosis for DTC P0643. Refer to
EC-362, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-416, "Diagnosis Procedure".
NO >> INSPECTION END
PBIB1741E
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P2138 Accelerator pedal position
sensor circuit range/per-
formance Rationally incorrect voltage is sent to ECM
compared with the signals from APP sensor
1 and APP sensor 2. • Harness or connector
(APP sensor 1 or 2 circuit is open or
shorted.)
[Crankshaft position sensor (POS) circuit
is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
(EVAP control system sensor circuit is
shorted.)
• Accelerator pedal position sensor
(APP sensor 1 or 2)
• Crankshaft position sensor (POS)
• Refrigerant pressure sensor
• EVAP control system pressure sensor
Revision: May 2010 2011 Versa

EC-420
< COMPONENT DIAGNOSIS >[HR16DE]
P2A00 A/F SENSOR 1
P2A00 A/F SENSOR 1
DescriptionINFOID:0000000006140988
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the
A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In additi on, a heater is integrated in the
sensor to ensure the required operating temperature of about 800° C
(1,472° F).
DTC LogicINFOID:0000000005930108
DTC DETECTION LOGIC
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be
shifted to LEAN side or RICH side.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Clear the mixture ratio self-learning value. Refer to EC-27, "
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement".
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load.
4. Let engine idle for 1 minute.
5. Keep engine speed between 2,500 and 3,000 rpm for 20 minutes.
JMBIA0112GB
PBIB3354E
DTC No. Trouble diagnosis name DTC detecting conditionPossible Cause
P2A00 Air fuel ratio (A/F) sensor 1
circuit range/performance • The output voltage computed by ECM from the
A/F sensor 1 signal is shifted to the lean side for
a specified period.
• The A/F signal computed by ECM from the A/F sensor 1 signal is shifted to the rich side for a
specified period. • A/F sensor 1
• A/F sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leaks
Revision: May 2010
2011 Versa

COOLING FANEC-425
< COMPONENT DIAGNOSIS > [HR16DE]
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COOLING FAN
DescriptionINFOID:0000000005930111
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant
temperature, refrigerant
pressure, and air conditioner ON signal. The contro l system has 3-step control [HIGH/LOW/OFF].
COOLING FAN MOTOR
Models without A/C
The cooling fan operates at each speed when the current flows in the cooling fan motor as per the following.
Models with A/C
The cooling fan operates at high (HI) speed when the current flows, and operates at low (LOW) speed when
cooling fan motor and the resistor are circuited in series.
Component Function CheckINFOID:0000000005930112
1.CHECK COOLING FAN FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Touch “LOW” and “Hi” on the CONSULT-III screen.
4. Check that cooling fan operates at each speed.
Without CONSULT-III
1. Perform IPDM E/R auto active test and c heck cooling fan motor operation. Refer to PG-20, "
Auto Active
Te s t".
2. Check that cooling fan operates at each speed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to EC-427, "
Diagnosis Procedure".
Cooling fan Speed Cooling fan motor terminals
(+) (–)
Low (LOW) 1
3 and 4
2 3 and 4
1 and 2 3
1 and 2 4
High (HI) 1 and 23 and 4
Revision: May 2010 2011 Versa

FUEL INJECTOREC-433
< COMPONENT DIAGNOSIS > [HR16DE]
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FUEL INJECTOR
DescriptionINFOID:0000000005930119
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Component Function CheckINFOID:0000000005930120
1.INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
YES >> GO TO 2.
NO >> Go to EC-434, "
Diagnosis Procedure".
2.CHECK FUEL INJECTOR FUNCTION
With CONSULT-III
1. Start engine.
2. Perform “POWER BALANCE” in “A CTIVE TEST” mode with CONSULT-III.
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-III
1. Let engine idle.
2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-434, "
Diagnosis Procedure".
PBIA9664J
Clicking noise should be heard.
PBIB3332E
Revision: May 2010 2011 Versa

FUEL PUMPEC-437
< COMPONENT DIAGNOSIS > [HR16DE]
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FUEL PUMP
DescriptionINFOID:0000000005930124
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to
operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The EC M stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly dr ive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
Component Function CheckINFOID:0000000005930125
1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose (1) with two fingers.
Is the inspection result normal?
YES >> INSPECTION END
NO >> EC-438, "
Diagnosis Procedure".
Sensor Input signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
ALBIA0276ZZ
Revision: May 2010 2011 Versa

EC-460
< COMPONENT DIAGNOSIS >[HR16DE]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
DescriptionINFOID:0000000005930146
The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Component Function CheckINFOID:0000000005930147
1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-461, "
Diagnosis Procedure".
PBIB2657E
ECM Ground Voltage
Connector Terminal
F11 41
(Refrigerant pressure sensor signal) Ground 1.0 - 4.0V
PBIA9574J
Revision: May 2010
2011 Versa