2001 NISSAN ALMERA TINO Service Repair Manual

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Page 865 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Wiring DiagramNLEC1285MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1285S01
YEC750
CRANKSHAFT POSITION SENSOR (POS)QG18DE
Wiring Diagram
EC-440

Page 866 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual MODELS WITH ECM IN CABINNLEC1285S02
YEC897
CRANKSHAFT POSITION SENSOR (POS)QG18DE
Wiring Diagram (Contd)
EC-441

Page 867 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Diagnostic ProcedureNLEC1286
1 CHECK OVERALL FUNCTION
1. Start engine and let it idle.
2. Check voltage between ECM terminal 85 and ground.
SEF761Z
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 RETIGHTEN

Page 868 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 3 CHECK POWER SUPPLY
1. Disconnect crankshaft position sensor harness connector.
JEF835Z
2. Turn ignition switch ªONº.
3. Check voltage between terminal 3 and ground with CONSULT-II or tester.
SEF11

Page 869 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 5 CHECK INPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connectors.
JEF835Z
3. Check continuity between ECM terminal 85 and crankshaft position sensor harness connector

Page 870 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual SEF121X
Component InspectionNLEC1287CRANKSHAFT POSITION SENSOR (POS)NLEC1287S011. Disconnect crankshaft position sensor (POS) harness connec-
tor.
2. Loosen the fixing bolt of the sensor.
3. Remove th

Page 871 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DescriptionNLEC1288SYSTEM DESCRIPTIONNLEC1288S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
EGR vol-
ume controlEGR volume control valve Camshaft po

Page 872 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual SEF552W
COMPONENT DESCRIPTIONNLEC1288S02EGR Volume Control ValveNLEC1288S0201The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four w

SEF552W
COMPONENT DESCRIPTIONNLEC1288S02EGR Volume Control ValveNLEC1288S0201The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the
ECM. Two windings are turned ON and OFF in sequence. Each
time an ON pulse is issued, the valve opens or closes, changing
the flow rate. When no change in the flow rate 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.
SEF599K
EGR Temperature SensorNLEC1288S0203The EGR temperature sensor detects temperature changes in the
EGR passageway. When the EGR volume control valve opens, hot
exhaust gases flow, and the temperature in the passageway
changes. The EGR temperature sensor is a thermistor that modi-
fies a voltage signal sent from the ECM. This modified signal then
returns to the ECM as an input signal. As the temperature
increases, EGR temperature sensor resistance decreases. This
sensor is not used to control the engine system.
SEF068XA

EGR temperature
ÉC (ÉF)Voltage*
VResistance
MW
0 (32) 4.56 0.62 - 1.05
50 (122) 2.25 0.065 - 0.094
100 (212) 0.59 0.011 - 0.015
*: These data are reference values and are measured between ECM terminal 72
(EGR temperature sensor) and ground.
When EGR system is operating.
Voltage: 0 - 1.5V
CAUTION:
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
CONSULT-II Reference Value in Data Monitor
Mode
NLEC1289Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
EGR TEMP SEN+Engine: After warming up Less than 4.5V
EGR VOL CON/V+Engine: After warming up
+Air conditioner switch: ªOFFº
+Shift lever: ªNº
+No-loadIdle 0 step
Revving engine up to 3,000 rpm
quickly10 - 55 step
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)QG18DE
Description (Cont'd)
EC-447

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