2003 NISSAN ALMERA N16 Electronic Repair Manual

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Page 945 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P1226 TP SENSOR
EC-615
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DTC P1226 TP SENSORPFP:16119
Component DescriptionEBS00KJM
Electric Throttle Control Actuator consists of throttle c

DTC P1226 TP SENSOR
EC-615
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DTC P1226 TP SENSORPFP:16119
Component DescriptionEBS00KJM
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 the 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 addi-
tion, 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 sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.
On Board Diagnosis LogicEBS00KJN
The MI will not light up for this diagnosis.
DTC Confirmation ProcedureEBS00KJO
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. Turn ignition switch “OFF”, wait at least 10 seconds.
4. Turn ignition switch “ON”.
5. Repeat steps 3 and 4, 32 times.
6. If 1st trip DTC is detected, go to EC-616, "
Diagnostic Procedure"
.
WITHOUT CONSULT-II
1. Turn ignition switch “ON”.
2. Turn ignition switch “OFF”, wait at least 10 seconds and then turn “ON”.
3. Repeat step 2, 32 times.
4. Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
5. If 1st trip DTC is detected, go to EC-616, "
Diagnostic Procedure" .
PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1226
1226Closed throttle position
learning performance
problemClosed throttle position learning is not performed
successfully, repeatedly.
●Electric throttle control actuator
(TP sensor 1 and 2)
SEF058Y

Page 946 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-616
[QG (WITHOUT EURO-OBD)]
DTC P1226 TP SENSOR
Diagnostic Procedure
EBS00KJP
1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch “OFF”.
2. Remove the intake air duct.

Page 947 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P1227, P1228 APP SENSOR
EC-617
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DTC P1227, P1228 APP SENSORPFP:18002
Component DescriptionEBS00KJR
The accelerator pedal position sensor is i

DTC P1227, P1228 APP SENSOR
EC-617
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DTC P1227, P1228 APP SENSORPFP:18002
Component DescriptionEBS00KJR
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 ModeEBS00KJS
Specification data are reference values.
*: Accelerator pedal position sensor 2 signal is converted by ECM internality. Thus, it differs from ECM terminal voltage signal.
On Board Diagnosis LogicEBS00KJT
These self-diagnoses have 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 ProcedureEBS00KJU
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.
PBIB0146E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN1
ACCEL SEN2*
●Ignition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.35 - 0.67V
Accelerator pedal: Fully depressed More than 3.9V
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
P1227
1227Accelerator pedal position
sensor 2 circuit low inputAn excessively low voltage from the APP sensor 2
is sent to ECM.
●Harness or connectors
(The APP sensor 2 circuit is open or
shorted.)
●Accelerator pedal position sensor
(Accelerator pedal position sensor 2) P1228
1228Accelerator pedal position
sensor 2 circuit high inputAn excessively high voltage from the APP sensor 2
is sent to ECM.
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 throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

Page 948 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-618
[QG (WITHOUT EURO-OBD)]
DTC P1227, P1228 APP SENSOR
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 s

Page 949 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P1227, P1228 APP SENSOR
EC-619
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Wiring DiagramEBS00KJV
YEC302A

Page 950 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-620
[QG (WITHOUT EURO-OBD)]
DTC P1227, P1228 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when meas

Page 951 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P1227, P1228 APP SENSOR
EC-621
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2.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
conne

Page 952 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-622
[QG (WITHOUT EURO-OBD)]
DTC P1227, P1228 APP SENSOR
6. CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 98 and APP sensor terminal 6.

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