2001 NISSAN ALMERA TINO Service Repair Manual

maintenance reset driver seat adjustment height trip computer steering ABS

Load previous 8 pages

Page 889 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 5 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
SEF076X
3. Turn ignition switch ªONº.
4. Check voltage betwee

Page 890 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 8 CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to ªComponent Inspectionº EC-465.
OK or NG
OK©GO TO 9.
NG©Replace EVAP canister purge volume control solenoid valve.
9 CHECK INTERMI

Page 891 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DescriptionNLEC1305SYSTEM DESCRIPTIONNLEC1305S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
Idle air
controlIACV-AAC valve Camshaft position sensor

DescriptionNLEC1305SYSTEM DESCRIPTIONNLEC1305S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
Idle air
controlIACV-AAC valve Camshaft position sensor (PHASE) Engine speed and cylinder number
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle 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
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
crankshaft position sensor (POS) detects the actual engine speed
and sends a signal to the ECM. The ECM then controls the step
position 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 taking into consid-
eration various engine conditions, such as during warm up,
deceleration, and engine load (air conditioner, power steering, cool-
ing fan operation and electrical load).
SEF937W
COMPONENT DESCRIPTIONNLEC1305S02IACV-AAC ValveNLEC1305S0201The 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 sequence. Each time the IACV-AAC
valve opens or closes to change the 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
QG18DE
Description
EC-466

Page 892 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual CONSULT-II Reference Value in Data Monitor
Mode
NLEC1306
MONITOR ITEM CONDITION SPECIFICATION
IACV-AAC/V+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 5 - 25 s

Page 893 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Wiring DiagramNLEC1310MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1310S01
YEC752
IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Wiring Diagram
EC-468

Page 894 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual MODELS WITH ECM IN CABINNLEC1310S02
YEC899
IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Wiring Diagram (Contd)
EC-469

Page 895 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Diagnostic ProcedureNLEC1311
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

Page 896 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 3 DETECT MALFUNCTIONING PART
Check the following.
+15A fuse
+Harness connectors E76, F36
+Harness for open or short between fuse and ECM relay
+ECM relay
+Harness for open or short between IACV-AAC an

Load next 8 pages

Page: < prev 1-10 ... 857-864 865-872 873-880 881-888 889-896 897-904 905-912 913-920 921-928 ... 3056 next >

rims mileage ECU coolant capacity lock fuses