2001 NISSAN ALMERA Service Manual

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Page 1105 of 2898

NISSAN ALMERA 2001 Service Manual 4 CHECK AIR CONTROL VALVE (POWER STEERING) OPERATION-I
1. Reconnect the ECM harness connector and IACV-AAC valve harness connector.
2. Disconnect the vacuum hose connected to the air control valve (Po

Page 1106 of 2898

NISSAN ALMERA 2001 Service Manual 6 CHECK VACUUM PORT
1. Stop engine.
2. Disconnect the vacuum hose connected to the air control valve (Power steering) at the vacuum port.
3. Blow air into vacuum port.
4. Check that air flows freely.

Page 1107 of 2898

NISSAN ALMERA 2001 Service Manual 9 REPLACE IACV-AAC VALVE
1. Replace IACV-AAC valve assembly.
2. Perform ªIdle Air Volume Learningº, EC-57.
Is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT©INSPECTION END
INCMP©Follow the constr

Page 1108 of 2898

NISSAN ALMERA 2001 Service Manual SEF605Y
SEF089X
Component InspectionNJEC0286IACV-AAC VALVENJEC0286S011) Disconnect IACV-AAC valve harness connector.
2) Check IACV-AAC valve resistance.
Condition Resistance
Terminal 2 and terminals 1

Page 1109 of 2898

NISSAN ALMERA 2001 Service 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-385

Page 1110 of 2898

NISSAN ALMERA 2001 Service 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 1111 of 2898

NISSAN ALMERA 2001 Service Manual Wiring DiagramNJEC0292
HEC799
DTC P0510 CLOSED THROTTLE POSITION SWITCH (WHERE FITTED)QG
Wiring Diagram
EC-387

Page 1112 of 2898

NISSAN ALMERA 2001 Service 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

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