2008 NISSAN LATIO Service Repair Manual

tires ESP height brake rotor service dead battery open trunk

Page 1265 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0117, P0118 ECT SENSOR
EC-191
< SERVICE INFORMATION >
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Refer to EC-191, "Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace engine coolant tempera

Page 1266 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-192
< SERVICE INFORMATION >
DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
Component DescriptionINFOID:0000000001702679
Electric throttle control actuator consists of throttle control motor,

EC-192
< SERVICE INFORMATION >
DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
Component DescriptionINFOID:0000000001702679
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-II Reference Value in Data Monitor ModeINFOID:0000000001702680
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:0000000001702681
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P0122 or P0123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-400
.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureINFOID:0000000001702682
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 8V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN 1
THRTL SEN 2*• Ignition switch: ON
(Engine stopped)
• Shift lever: D (A/T, CVT),
1st (M/T)Accelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0122
0122Throttle position sensor
2 circuit low inputAn excessively low voltage from the TP sensor
2 is sent to ECM.• Harness or connectors
(TP sensor 2 circuit is open or shorted.)
• Electric throttle control actuator
(TP sensor 2) P0123
0123Throttle position sensor
2 circuit high inputAn excessively high voltage from the TP sensor
2 is sent to ECM.
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.

Page 1267 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0122, P0123 TP SENSOR
EC-193
< SERVICE INFORMATION >
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2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is

Page 1268 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-194
< SERVICE INFORMATION >
DTC P0122, P0123 TP SENSOR
Wiring Diagram
INFOID:0000000001702683
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do

Page 1269 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0122, P0123 TP SENSOR
EC-195
< SERVICE INFORMATION >
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Diagnosis ProcedureINFOID:0000000001702684
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen a

Page 1270 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-196
< SERVICE INFORMATION >
DTC P0122, P0123 TP SENSOR
1. Disconnect electric throttle control actuator (1) harness connec-
tor.
- : Vehicle front
2. Turn ignition switch ON.
3. Check voltage betwe

Page 1271 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0122, P0123 TP SENSOR
EC-197
< SERVICE INFORMATION >
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>>INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to EC-136
.
>>INSPECTION END
Component InspectionINFOID:0

Page 1272 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-198
< SERVICE INFORMATION >
DTC P0125 ECT SENSOR
DTC P0125 ECT SENSOR
DescriptionINFOID:0000000001702687
NOTE:
If DTC P0125 is displayed with P0117 or P0118, first perform the trouble diagnosis for

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