2001 NISSAN ALMERA TINO Service Repair Manual

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Page 1401 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual SEF552W
COMPONENT DESCRIPTIONNLEC1818S02EGR Volume Control ValveNLEC1818S0201The 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 DESCRIPTIONNLEC1818S02EGR Volume Control ValveNLEC1818S0201The 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 SensorNLEC1818S0203The 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.
SEF068X

EGR temperature
ÉC (ÉF)Voltage*
VResistance
MW
0 (32) 4.56 0.73 - 0.89
50 (122) 2.25 0.074 - 0.082
100 (212) 0.59 0.012 - 0.014
*: 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
NLEC1819Specification 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)SR20DE
Description (Cont'd)
EC-976

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NISSAN ALMERA TINO 2001 Service Repair Manual ECM Terminals and Reference ValueNLEC1820Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output

Page 1403 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Wiring DiagramNLEC1823
YEC757
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)SR20DE
Wiring Diagram
EC-978

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NISSAN ALMERA TINO 2001 Service Repair Manual Diagnostic ProcedureNLEC1825
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 4.
2 CHECK OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªDATA

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NISSAN ALMERA TINO 2001 Service Repair Manual 3 CHECK OVERALL FUNCTION-II
With CONSULT-II
1. Warm up engine to normal operating temperature.
2. Select ªEGR VOL CONT/Vº in ªACTIVE TESTº mode with CONSULT-II.
3. Keep engine speed at 2,000 rpm a

Page 1406 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 5 CHECK OVERALL FUNCTION-II
Without CONSULT-II
1. Warm up engine to normal operating temperature.
2. Rev engine from idle up to about 3,000 rpm two to three times.
3. Make sure the voltage between ECM

Page 1407 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 7 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between EGR temperature sensor harness terminal 1 and engine ground.
Refer to wiring diagram.
Continuity should exis

Page 1408 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 12 CHECK EGR VOLUME CONTROL VALAVE OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between
ECM terminal 8 and EGR volume control

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