2004 NISSAN TERRANO check engine

qc
CHECK COOLING SYSTEM FOR LEAK.
Apply pressure to the cooling system with
a tester, and check if the pressure drops.
Testing pressure:157 kPa (1.57 bar, 1.6 kg/cm
2, 23 psi)
Pressure should not drop.
CAUTION:
Higher than the specified pressure may
cause radiator damage.
OK
ENG Check the following for
leak.
IHose
I Radiator
I Water pump
Refer to LC section (ªWater
Pumpº).
CHECK RADIATOR CAP.
Apply pressure to cap with a tester.
Radiator cap relief pressure: 78 - 98 kPa (0.78 - 0.98 bar, 0.8 - 1.0
kg/cm
2, 11 - 14 psi)
OK
ENG Replace radiator cap.
CHECK THERMOSTAT.
1. Check valve seating condition at normal
room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
Valve opening temperature:76.5ÉC (170ÉF) [standard]
Valve lift: More than 10 mm/90ÉC
(0.39 in/194ÉF)
3. Check if valve is closed at 5ÉC (9ÉF) below valve opening temperature.
For details, refer to LC section (ªThermo-
statº).
OK
ENG Replace thermostat
Check engine coolant temperature sensor.
Refer to ªCOMPONENT INSPECTIONº,
EC-449.
OK
ENGReplace engine coolant
temperature sensor.
If the cause can not be isolated, go to
ªMAIN 12 CAUSES OF OVERHEATINGº
on EC-448.
INSPECTION END
SLC754A
SLC755A
SLC343
H
H
H
H
H
H
DTC P1217 OVER HEATTD27Ti
Diagnostic Procedure (Cont'd)
EC-447
http://vnx.su/

Main 12 Causes of Overheating
Engine Step Inspection itemEquipmentConditionReference page
OFF 1
I
Blocked radiator
I Blocked radiator grille
I Blocked bumper I
Visual No blocking Ð
2 ICoolant mixture ICoolant tester 50 - 50% coolant mixture See MA section, ªRECOM-
MENDED FLUIDS AND
LUBRICANTSº.
3 ICoolant level IVisual Coolant up to MAX level in
reservoir tank and radiator
filler neck See LC section, ªChanging
Engine Coolantº.
4 IRadiator cap IPressure tester 78 - 98 kPa (0.78 - 0.98
bar, 0.8 - 1.0 kg/cm
2,11-14
psi)See LC section, ªSystem
Checkº.
ON*
25 ICoolant leaks IVisual No leaks See LC section, ªSystem
Checkº.
ON*
26 IThermostat I
Touch the upper and
lower radiator hoses Both hoses should be hot See LC section, ªThermo-
statº and ªRadiatorº.
ON*
17 ICooling fan ICONSULT-II Operating See Trouble Diagnosis for
DTC P1217, EC-441.
OFF 8 ICombustion gas leak I
Color checker chemical
tester 4 Gas analyzer Negative Ð
ON*
39 I
Coolant temperature
gauge I
Visual Gauge less than 3/4 when
driving Ð
I Coolant overflow to res-
ervoir tank I
Visual No overflow during driving
and idling See LC section, ªChanging
Engine Coolantº.
OFF*
410 I
Coolant return from res-
ervoir tank to radiator I
Visual Should be initial level in
reservoir tank See LC section, ªREFILL-
ING ENGINE COOLANTº.
OFF 11
ICylinder head I
Straight gauge feeler
gauge 0.1 mm (0.004 in) Maxi-
mum distortion (warping) See EM section, ªInspec-
tionº.
12 I
Cylinder block and pis-
tons I
Visual No scuffing on cylinder
walls or piston See EM section, ªInspec-
tionº.
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to LC section, ªOVERHEATING CAUSE ANALYSISº.
DTC P1217 OVER HEATTD27Ti
EC-448
http://vnx.su/

Component Description
NEEDLE LIFT SENSOR (NLS)
The needle lift sensor is built into the No. 1 nozzle. Its inductive
pickup element senses fuel injection timing. It is sent as a pulse
signal to the ECM for feed-back the actual fuel injection timing and
calculating the secondary engine speed.
On Board Diagnosis Logic
DTCMalfunction is detected when .... Check Items
(Possible Cause)
P1240
0304 I
An incorrect signal from the sensor is sent to ECM. IHarness or connectors
(The sensor circuit is open or short-circuited.)
I Needle lift sensor
P1242
0906
DTC Confirmation Procedure
NOTE:
Before DTC confirmation, be sure to check battery voltage is
above 9V.
WITH CONSULT-II
1) Turn ignition switch to ªONº position and select ªDATA MONI-
TORº mode with CONSULT-II.
2) Start engine.
3) Run it for 2 seconds at above 1,200 rpm.
WITHOUT CONSULT-II
1) Start engine.
2) Run it for 2 seconds at above 1,200 rpm.
3) Turn ignition switch to ªLOCKº position, wait at least 5 seconds and then turn to ªONº position.
4) Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
NEF689
DTC P1240 NEEDLE LIFT SEN, DTC P1242 NEEDLE LIFT SE (RPM)TD27Ti
EC-450
http://vnx.su/

Diagnostic Procedure
INSPECTION START
CHECK FOR AIR IN FUEL FILTER.
1. Move priming pump up and down topurge air from fuel filter.
2. Perform ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector and needle lift sensor harness connec-
tor.
3. Check harness continuity between needle lift sensor connector terminal q
1and ECM connector terminal345.
Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following:
IHarness for open circuit
between needle lift sen-
sor and ECM
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT-I.
Check harness continuity between needle
lift sensor connector terminals q
2and
ECM connector terminals333. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following:
IHarness for open or
short-circuit between
ECM and needle lift sen-
sor.
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT-II.
Check resistance between ECM connector
terminal
346and engine ground. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following:
IHarness for open-circuit
between ECM and
engine ground
If NG, repair harness or
connectors.
CHECK NO. 1 INJECTION NOZZLE FOR
CLOGGING.
Refer to spray pattern test of ªINJECTION
NOZZLEº.
If NG, replace No. 1 injection nozzle.
qA
NEF591
NEF690
NEF463
H
H
H
H
H
H
DTC P1240 NEEDLE LIFT SEN, DTC P1242 NEEDLE LIFT SE (RPM)TD27Ti
EC-452
http://vnx.su/

Diagnostic Procedure
EGR CONTROL
INSPECTION START
CHECK OVERALL FUNCTION.
1. Start engine and warm it up sufficiently.
2. Perform diagnostic test mode II (Self- diagnostic results).
Make sure that diagnostic trouble code
P0000 (0505) is displayed.
3. Make sure that EGR valve spring moves up and down (Use your finger)
under the following conditions.
At idle:Spring does not move.
Racing engine from idle to 3,000
rpm: Spring moves up and down.
4. Make sure that throttle control valve rod moves up and down under the following
conditions.
At idle:Rod does not move.
Racing engine from idle to 3,000
rpm: Rod moves up and down.
NG
EOK INSPECTION END
CHECK VACUUM SOURCES TO EGR
VALVE AND THROTTLE CONTROL
VA LV E .
1. Disconnect vacuum hoses to EGR
valve and throttle control valve.
2. Make sure that vacuum exists under the following conditions.
At idle:Vacuum should exist.
Racing engine from idle to 3,000
rpm: Vacuum should not exist.
NG
EOK CHECK COMPONENTS
(EGR valve and throttle
control valve).
(See page EC-462.)
NG
Replace malfunctioning
component(s).
qA
YEC243A
NEF509
YEC244A
NEF511
H
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
EC-459
http://vnx.su/

qA
CHECK CONTROL FUNCTION.
With CONSULT-II
1. Turn ignition switch to ªONº position.
2. Turn EGRC-solenoid valve A, B and throttle control solenoid valve to ªONº
and to ªOFFº in ªACTIVE TESTº mode
with CONSULT and check operating
sound.
Without CONSULT-II
1. Check voltage between ECM connector terminals
208,210and engine
ground with tester under the following
conditions.
Voltage: At idle:Approximately 0.4V
Engine speed is more than 3,000
rpm: Battery voltage
2. Check voltage between ECM connector terminal q
1and engine ground with
tester under the following conditions.
Voltage: At idle:Approximately 0.4V
Engine speed is more than 2,400
rpm: Battery voltage
NG
EOK CHECK VACUUM HOSE.
Check vacuum hose for
clogging, cracks or
improper connection.
CHECK POWER SUPPLY-I.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect EGRC-solenoid valve A and B harness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between EGRC-solenoid valve A and B terminals q
2and engine
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK
ENG Check the following:
I20A fuse
I Condition and operation
of ignition switch
I Harness connectors
M787,F66(LHD mod-
els)
I Harness connectors
F100,M775(RHD mod-
els)
I ECM relay
I Harness for open or
short-circuit between
EGRC-solenoid valve A,
B and fuse.
If NG, replace fuse or
repair ignition switch, har-
ness or connectors.
qB
MEC953D
SEF816F
YEC247A
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
Diagnostic Procedure (Cont'd)
EC-460
http://vnx.su/

qB
CHECK POWER SUPPLY-II.
1. Turn ignition switch ªOFFº.
2. Disconnect throttle control solenoid valve harness connector.
3. Turn ignition switch ªONº.
4. Check voltage between throttle solenoid valve connector terminal q
2and engine
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK
ENG Check the following.
I20A fuse
I ECM relay
I Harness connectors
M787,F66(LHD mod-
els)
I Harness connectors
F100,M77(RHD mod-
els)
I Harness for open or
short circuit between
throttle control solenoid
valve and ECM relay.
If NG, repair or replace
harness or connectors.
CHECK OUTPUT SIGNAL CIRCUIT-I.
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM connector terminal
208and
EGR Control Solenoid Valve A connec-
tor terminal q
1; ECM connector terminal
210and EGR Control Solenoid Valve
B connector terminal q
1. Refer to wiring
diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following:
IHarness connectors
F100,M775(RHD mod-
els)
I Harness for open or
short-circuit between
EGRC-solenoid valve A,
B and ECM
If NG, repair harness or
connectors.
CHECK OUTPUT SIGNAL CIRCUIT-II.
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM connector terminal
213and
throttle control solenoid valve terminal
q
1. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
ENG Check the following:
IHarness connectors
F137,M853(RHD mod-
els)
I Harness for open or
short circuit between
throttle control solenoid
valve and ECM
If NG, repair harness or
connectors.
CHECK COMPONENTS
(EGRC-solenoid valve A and B).
(Throttle control valve)
Refer to EC-462.
OK
ENG Replace malfunctioning
component(s).
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage or
the connection of ECM harness connector.
Reconnect ECM harness connector and
retest.
INSPECTION END
MEC954D
H
H
H
H
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
Diagnostic Procedure (Cont'd)
EC-461
http://vnx.su/

Component Description
AIR CONDITIONER CUT CONTROL
Air conditioner is cut under the following conditions:
IStarting engine
I Quick acceleration from low speed
I Undershooting of idle speed
I High engine coolant temperature [above 107ÉC (225ÉF)]
I Malfunctioning of engine speed sensor, accelerator position sen-
sor or vehicle speed sensor when engine speed is below 2,100
rpm.
On Board Diagnosis Logic
DTC Malfunction is detected when .... Check Items
(Possible cause)
P1530
0805 I
Air conditioner relay signal circuit is shorted. IHarness or connectors
(The air conditioner relay signal circuit is shorted.)
I Air conditioner relay
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch and air conditioner switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 2 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch and air conditioner switch to ªONº position.
Wait at least 2 seconds.
2) Turn ignition switch to ªLOCKº position, wait at least 5 seconds and then turn to ªONº position.
3) Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
DTC P1530 AIR CONDITIONER RLYTD27Ti
EC-463
http://vnx.su/