2009 NISSAN LATIO Service Repair Manual

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Page 2817 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
NP
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Refer to
EM-141 .

Page 2818 of 4331

NISSAN LATIO 2009 Service Repair Manual 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 second

Page 2819 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-1463
< SERVICE INFOMATION >
[MR TYPE 2] C
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3. Set shift lever to N, P position (A/T, CVT) or Neutral (M/T) position.
4. Sta

Page 2820 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1464< SERVICE INFOMATION >
[MR TYPE 2]
DTC P2122, P2123 APP SENSOR
DTC P2122, P2123 APP SENSOR
Component Description INFOID:0000000004500359
The accelerator pedal position sensor is installed

EC-1464< SERVICE INFOMATION >
[MR TYPE 2]
DTC P2122, P2123 APP SENSOR
DTC P2122, P2123 APP SENSOR
Component Description INFOID:0000000004500359
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 positi on sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-III Reference Value in Data Monitor Mode INFOID:0000000004500360
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 Logic INFOID:0000000004500361
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-1396 .
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure INFOID:0000000004500362
NOTE: PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN 1 • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 4.0 - 4.8V
ACCEL SEN 2* • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 3.9 - 4.8V
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
P2122
2122 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
2123 Accelerator pedal position
sensor 1 circuit high input An excessively high voltage from the APP
sensor 1 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 the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

Page 2821 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2122, P2123 APP SENSOR
EC-1465
< SERVICE INFOMATION >
[MR TYPE 2] C
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If DTC Confirmation Procedure has been previously conduc
ted, always turn ignition swi

Page 2822 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1466< SERVICE INFOMATION >
[MR TYPE 2]
DTC P2122, P2123 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminal

Page 2823 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P2122, P2123 APP SENSOR
EC-1467
< SERVICE INFOMATION >
[MR TYPE 2] C
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NG >> Repair or replace ground connections. 2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconn

Page 2824 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1468< SERVICE INFOMATION >
[MR TYPE 2]
DTC P2122, P2123 APP SENSOR
2. Perform EC-1084, " Accelerator Pedal Released Position Learning " .
3. Perform EC-1084, " Throttle Valve Closed Position Lear

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