2001 NISSAN ALMERA TINO Service Repair Manual

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Page 1345 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 4 CHECK EGR TEMPERATURE SENSOR
Refer to ªComponent Inspectionº, EC-920.
OK or NG
OK©GO TO 5.
NG©Replace EGR temperature sensor.
5 CHECK EGR VOLUME CONTROL VALVE
Refer to ªComponent Inspectionº,

Page 1346 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DescriptionNLEC1633SYSTEM DESCRIPTIONNLEC1633S01
Sensor Input Signal to ECMECM func-
tionActuator
Camshaft position sensor Engine speed
EGR vol-
ume controlEGR volume control valve Mass air flow senso

Page 1347 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual SEF552W
COMPONENT DESCRIPTIONNLEC1633S02EGR Volume Control ValveNLEC1633S0201The 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 DESCRIPTIONNLEC1633S02EGR Volume Control ValveNLEC1633S0201The 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.
CONSULT-II Reference Value in Data Monitor
Mode
NLEC1634Specification 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
ECM Terminals and Reference ValueNLEC1635Specification 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.
TERMI-
NAL NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
8
9
17
18SB
W/B
R/W
G/REGR volume control valve[Engine is running.]
+Warm-up condition
+Idle speed0 - 14V
58 B Sensor's ground[Engine is running.]
+Warm-up condition
+Idle speed0V
72 PU EGR temperature sensor[Engine is running.]
+Warm-up condition
+Idle speedLess than 4.5V
[Engine is running.]
+Warm-up condition
+EGR system is operating.0 - 1.0V
SEF073P
On Board Diagnosis LogicNLEC1636If EGR temperature sensor detects EGR flow under the condition
that does not call for EGR, a high-flow malfunction is diagnosed.
NOTE:
Diagnosis for this DTC will occur when engine coolant temperature
is below 50 to 60ÉC (122 to 140ÉF). Therefore, it will be better to
turn ignition switch ªONº (start engine) at the engine coolant tem-
perature below 30ÉC (86ÉF) when starting DTC confirmation pro-
cedure.
DTC P1402 EGR FUNCTION (OPEN) (WHERE FITTED)SR20DE
Description (Cont'd)
EC-922

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NISSAN ALMERA TINO 2001 Service Repair Manual DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1402+EGR flow is detected under conditions that do not call for
EGR.+Harness or connectors
(The valve circuit is open or shorted.

DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1402+EGR flow is detected under conditions that do not call for
EGR.+Harness or connectors
(The valve circuit is open or shorted.)
+EGR volume control valve leaking or stuck open
+EGR temperature sensor
SEF202Y
SEF851Y
SEF852Y
SEF236Y
DTC Confirmation ProcedureNLEC1637NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
+Always perform at a temperature above þ10ÉC (14ÉF).
+Engine coolant temperature and EGR temperature must
be verified in ªDATA MONITORº mode with CONSULT-II
before starting DTC WORK SUPPORT test. If it is out of
range below, the test cannot be conducted.
COOLAN TEMP/S: þ10 to 50ÉC (14 to 122ÉF)*
EGR TEMP SEN: Less than 4.8V
If the values are out of the ranges indicated above, park
the vehicle in a cool place and allow the engine tempera-
ture to stabilize. Do not attempt to reduce the engine cool-
ant or EGR temperature with a fan or means other than
ambient air. Doing so may produce an inaccurate diagnos-
tic result.
*: Although CONSULT-II screen displays ªþ10 to 40ÉC (14 to
104ÉF)º as a range of engine coolant temperature, ignore it.
With CONSULT-II
1) Turn ignition switch ªOFFº and wait at least 10 seconds, then
turn ignition switch ªONº.
2) Select ªEGR SYSTEM P1402º of ªEGR SYSTEMº in ªDTC
WORK SUPPORTº mode with CONSULT-II.
3) Touch ªSTARTº. Follow instruction of CONSULT-II.
4) Start engine and let it idle until ªTESTINGº on CONSULT-II
screen is turned to ªCOMPLETEDº. (It will take 60 seconds or
more.)
If ªTESTINGº is not displayed after 5 minutes, turn ignition
ªOFFº and cool the engine coolant temperature to the
range of þ10 to 50ÉC (14 to 122ÉF). Retry from step 1.
5) Make sure that ªOKº is displayed after touching ªSELF-DIAG
RESULTSº. If ªNGº is displayed, refer to ªDiagnostic
Procedureº, EC-926.
DTC P1402 EGR FUNCTION (OPEN) (WHERE FITTED)SR20DE
On Board Diagnosis Logic (Cont'd)
EC-923

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NISSAN ALMERA TINO 2001 Service Repair Manual SEF947X
With GST
1) Turn ignition switch ªONº and select ªMODE 1º with GST.
2) Check that engine coolant temperature is within the range of
þ10 to 50ÉC (14 to 122ÉF).
3) Check that voltage betw

Page 1350 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Wiring DiagramNLEC1638
YEC700
DTC P1402 EGR FUNCTION (OPEN) (WHERE FITTED)SR20DE
Wiring Diagram
EC-925

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NISSAN ALMERA TINO 2001 Service Repair Manual Diagnostic ProcedureNLEC1639
1 CHECK POWER SUPPLY
1. Disconnect EGR volume control valve harness connector.
SEF216X
2. Turn ignition switch ªONº.
3. Check voltage between EGR volume control valve te

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