2001 NISSAN ALMERA TINO Service Repair Manual

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Page 1257 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual 6 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between CMPS terminal 1 and engine ground.
SEF234W
Continuity should exist.
3. Also check harness for short to power

Page 1258 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual SEF215X
Component Inspection=NLEC1767CAMSHAFT POSITION SENSORNLEC1767S011. Start engine and warm it up to normal operating temperature.
2. Check voltage between ECM terminals 66, 85 and engine
ground

Page 1259 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DescriptionNLEC1545SYSTEM DESCRIPTIONNLEC1545S01
Sensor Input Signal to ECMECM func-
tionActuator
Camshaft position sensor Engine speed
EGR vol-
ume controlEGR volume control valve Mass air flow senso

Page 1260 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual SEF552W
COMPONENT DESCRIPTIONNLEC1545S02EGR Volume Control ValveNLEC1545S0201The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four w

Page 1261 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0400+No EGR flow is detected under conditions that call for
EGR.+Harness or connectors
(EGR volume control valve circuit is open

DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0400+No EGR flow is detected under conditions that call for
EGR.+Harness or connectors
(EGR volume control valve circuit is open or
shorted.)
+EGR volume control valve stuck closed
+Dead (Weak) battery
+EGR passage clogged
+EGR temperature sensor and circuit
+Exhaust gas leaks
SEF013Y
SEF845Y
SEF846Y
SEF235Y
DTC Confirmation ProcedureNLEC1549CAUTION:
Always drive vehicle at a safe speed.
NOTE:
+If ªDTC Confirmation Procedureº has been previously
conducted, always turn ignition switch ªOFFº and wait at least
10 seconds before conducting the next test.
+P0400 will not be displayed at ªSELF-DIAG RESULTSº mode
with CONSULT-II even though DTC work support test result is
ªNGº.
TESTING CONDITION:
+Before performing the following procedure, confirm bat-
tery voltage is more than 10V at idle, then stop engine
immediately.
+For best result, perform the test at a temperature of 0ÉC
(32ÉF) or higher.
With CONSULT-II
1) Turn ignition switch ªOFFº and wait at least 10 seconds.
2) Turn ignition switch ªONº.
3) Check ªCOOLAN TEMP/Sº in ªDATA MONITORº mode with
CONSULT-II and confirm it is within the range listed below.
COOLAN TEMP/S: Less than 40ÉC (104ÉF)
If the value is out of range, park the vehicle in a cool place and
allow the engine temperature to stabilize. Do not attempt to
lower the engine coolant temperature with a fan or means
other than ambient air. Doing so may produce an inaccurate
diagnostic result.
4) Start engine and let it idle monitoring ªCOOLAN TEMP/Sº
value. When the ªCOOLAN TEMP/Sº value reaches 70ÉC
(158ÉF), immediately go to the next step.
5) Select ªEGR SYSTEM P0400º of ªEGR SYSTEMº in ªDTC
WORK SUPPORTº mode with CONSULT-II.
6) Touch ªSTARTº.
7) Accelerate vehicle to a speed of 40 km/h (25 MPH) once and
then stop vehicle with engine running.
If ªCOMPLETEDº appears on CONSULT-II screen, go to step
10.
If ªCOMPLETEDº does not appear on CONSULT-II screen, go
to the following step.
8) Check the output voltage of ªTHRTL POS SENº (at closed
throttle position) and note it.
9) When the following conditions are met, ªTESTINGº will be dis-
played on the CONSULT-II screen. Maintain the conditions
until ªTESTINGº changes to ªCOMPLETEDº. (It will take
approximately 45 seconds or more.)
DTC P0400 EGR FUNCTION (CLOSED) (WHERE FITTED)SR20DE
On Board Diagnosis Logic (Cont'd)
EC-836

Page 1262 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual ENG SPEED 1,600 - 3,500 rpm
Vehicle speed 10 km/h (6 MPH) or more
B/FUEL SCHDL 5.0 - 8.5 msec
THRTL POS SEN (X + 0.05) þ (X + 0.87)V
X = Voltage value measured at step 8
Selector lever Suitable posit

Page 1263 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Wiring DiagramNLEC1550
YEC700
DTC P0400 EGR FUNCTION (CLOSED) (WHERE FITTED)SR20DE
Wiring Diagram
EC-838

Page 1264 of 3051

NISSAN ALMERA TINO 2001 Service Repair Manual Diagnostic ProcedureNLEC1551
1 CHECK EXHAUST SYSTEM
1. Start engine.
2. Check exhaust pipes and muffler for leaks.
SEF099P
OK or NG
OK (With CONSULT-II)©GO TO 2.
OK (Without CONSULT-
II)©GO TO 4.
NG

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