2003 NISSAN TEANA Service Manual

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Page 1417 of 3502

NISSAN TEANA 2003 Service Manual DTC P0117, P0118 ECT SENSOR
EC-135
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3. CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check har

Page 1418 of 3502

NISSAN TEANA 2003 Service Manual EC-136
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DTC P0122, P0123 TP SENSOR

DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionBBS005DD
Electric throttle control actuator consists of throttle control motor,
throttle position sens

EC-136
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DTC P0122, P0123 TP SENSOR

DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionBBS005DD
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.
CONSULT-II Reference Value in Data Monitor ModeBBS005DE
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 LogicBBS005DF
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.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN 1
THRTL SEN 2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released More than 0.36V
Shift lever: D 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.)
(APP sensor 2 circuit is shorted.)
Electric throttle control actuator
(TP sensor 2)
Accelerator pedal position sensor
(APP 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 1419 of 3502

NISSAN TEANA 2003 Service Manual DTC P0122, P0123 TP SENSOR
EC-137
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DTC Confirmation ProcedureBBS005DG
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF

Page 1420 of 3502

NISSAN TEANA 2003 Service Manual EC-138
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DTC P0122, P0123 TP SENSOR

Wiring DiagramBBS005DH
TBWM1482E

Page 1421 of 3502

NISSAN TEANA 2003 Service Manual DTC P0122, P0123 TP SENSOR
EC-139
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals w

Page 1422 of 3502

NISSAN TEANA 2003 Service Manual EC-140
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DTC P0122, P0123 TP SENSOR

2. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
3. C

Page 1423 of 3502

NISSAN TEANA 2003 Service Manual DTC P0122, P0123 TP SENSOR
EC-141
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6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-47, "
Accelerator Pedal Released Position

Page 1424 of 3502

NISSAN TEANA 2003 Service Manual EC-142
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DTC P0122, P0123 TP SENSOR

Component InspectionBBS005DJ
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform EC-47, "
Throttle Valve Closed Position Lear

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