2001 NISSAN ALMERA N16 Electronic Repair Manual

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Page 617 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEF505V
Component DescriptionNJEC0287A closed throttle position switch and wide open throttle position
switch are built into the throttle position sensor unit. The wide open
throttle position switch i

SEF505V
Component DescriptionNJEC0287A closed throttle position switch and wide open throttle position
switch are built into the throttle position sensor unit. The wide open
throttle position switch is used only for A/T control.
When the throttle valve is in the closed position, the closed throttle
position switch sends a voltage signal to the ECM. The ECM only
uses this signal to open or close the EVAP canister purge control
valve when the throttle position sensor is malfunctioning.
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0571Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
CLSD THL/P SW+Engine: IdleThrottle valve: Idle position ON
Throttle valve: Slightly open OFF
ECM Terminals and Reference ValueNJEC0288Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
40 Y/PUThrottle position switch
(Closed position)[Engine is running]
+Accelerator pedal releasedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Accelerator pedal depressedApproximately 0V
On Board Diagnosis LogicNJEC0289
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0510
0510+Battery voltage from the closed throttle position switch is
sent to ECM with the throttle valve opened.+Harness or connectors
(The closed throttle position switch circuit is
shorted.)
+Closed throttle position switch
+Throttle position sensor
SEF197Y
DTC Confirmation ProcedureNJEC0290CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch ªOFFº, wait at least 9 seconds and then
start engine.
DTC P0510 CLOSED THROTTLE POSITION SWITCH (WHERE FITTED)QG
Component Description
EC-321

Page 618 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 3) Select ªCLSD THL/P SWº in ªDATA MONITORº mode. If
ªCLSD THL/P SWº is not available, go to step 5.
4) Check the signal under the following conditions.
Condition Signal indication
Throttle valv

Page 619 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Wiring DiagramNJEC0292
YEC052A
DTC P0510 CLOSED THROTTLE POSITION SWITCH (WHERE FITTED)QG
Wiring Diagram
EC-323

Page 620 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Diagnostic ProcedureNJEC0293
1 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect throttle position switch harness connector.
JEF091Y
3. Turn ignition switch ªONº.
4. Check voltage be

Page 621 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 4 DETECT MALFUNCTIONING PART
Check the following.
+Harness for open or short between throttle position switch and ECM
+Harness for open or short between throttle position switch and TCM (Transmission

Page 622 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch ªOFFº.
3) Disconnect throttle position switch harness connector.
4) Check continuity between terminals 4 and 5

Page 623 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEF093X
Component DescriptionNJEC0295The ECM consists of a microcomputer, and connectors for signal
input and output and for power supply. The ECM controls the
engine.
On Board Diagnosis LogicNJEC0296

Page 624 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Diagnostic Procedure=NJEC0298
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation

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