2001 NISSAN ALMERA TINO Service Repair Manual

parking sensors maintenance diagnostic menu language headlamp brake fluid

Load previous 8 pages

Page 1417 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 5 CHECK VACUUM HOSES AND TUBES
1. Turn ignition switch ªOFFº.
2. Disconnect vacuum hoses between the EVAP canister purge volume control solenoid valve and vacuum port, EVAP
canister purge volume con

Page 1418 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 7 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
SEF219X
3. Turn ignition switch ªONº.
4. Check voltage betwee

Page 1419 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 10 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F60, F13
+Harness for open or short between EVAP canister purge volume control solenoid valve and ECM.
©Repair copen circuit or

Page 1420 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DescriptionNLEC1836SYSTEM DESCRIPTIONNLEC1836S01
Sensor Input Signal to ECMECM func-
tionActuator
Camshaft position sensor Engine speed
Idle air
controlIACV-AAC valve Mass air flow sensor Amount of in

DescriptionNLEC1836SYSTEM DESCRIPTIONNLEC1836S01
Sensor Input Signal to ECMECM func-
tionActuator
Camshaft position sensor Engine speed
Idle air
controlIACV-AAC valve Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle position
Park/neutral position (PNP) switch Park/neutral position
Air conditioner switch Air conditioner operation
Power steering oil pressure switch Power steering load signal
Battery Battery voltage
Vehicle speed sensor Vehicle speed
Intake air temperature sensor Intake air temperature
Cooling fan Cooling fan operation
Electrical load Electrical load signal
This system automatically controls engine idle speed to a specified
level. Idle speed is controlled through fine adjustment of the
amount of air which by-passes the throttle valve via IACV-AAC
valve. The IACV-AAC valve changes the opening of the air by-pass
passage to control the amount of auxiliary air. This valve is actu-
ated by a step motor built into the valve, which moves the valve in
the axial direction in steps corresponding to the ECM output sig-
nals. One step of IACV-AAC valve movement causes the respec-
tive opening of the air by-pass passage. (i.e. when the step
advances, the opening is enlarged.) The opening of the valve is
varied to allow for optimum control of the engine idling speed. The
camshaft position sensor detects the actual engine speed and
sends a signal to the ECM. The ECM then controls the step posi-
tion of the IACV-AAC valve so that engine speed coincides with the
target value memorized in ECM. The target engine speed is the
lowest speed at which the engine can operate steadily. The opti-
mum value stored in the ECM is determined by takig into consid-
eration various engine conditions, such as during warm up,
deceleration, and engine load (air conditioner, power steering and
cooling fan operation).
SEF937W
COMPONENT DESCRIPTIONNLEC1836S02IACV-AAC ValveNLEC1836S0201The IACV-AAC valve is operated by a step motor for centralized
control of auxiliary air supply. This motor has four winding phases
and is actuated by the output signals of ECM which turns ON and
OFF two windings each in seqeunce. Each time the IACV-AAC
valve opens or closes to change tha auxiliary air quantity, the ECM
sends a pulse signal to the step motor. When no change in the
auxiliary air quantity is needed, the ECM does not issue the pulse
signal. A certain voltage signal is issued so that the valve remains
at that particular opening.
IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVE
SR20DE
Description
EC-995

Page 1421 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual CONSULT-II Reference Value in Data Monitor
Mode
NLEC1837
MONITOR ITEM CONDITION SPECIFICATION
IACV-AAC/V+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 5 - 20 s

Page 1422 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Wiring DiagramNLEC1841MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1841S01
YEC759
IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVE
SR20DE
Wiring Diagram
EC-997

Page 1423 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual MODELS WITH ECM IN CABINNLEC1841S02
YEC937
IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVE
SR20DE
Wiring Diagram (Contd)
EC-998

Page 1424 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Diagnostic ProcedureNLEC1842
1 CHECK OVERALL FUNCTION
1. Turn ignition switch ªOFFº.
2. Read the voltage signal between ECM terminals 6, 7, 15, 16 (IACV-AAC valve signal) and ground with an oscillos

Load next 8 pages

Page: < prev 1-10 ... 1385-1392 1393-1400 1401-1408 1409-1416 1417-1424 1425-1432 1433-1440 1441-1448 1449-1456 ... 3056 next >

warning tow bar four wheel drive fuse box location warning lights fold seats