check engine NISSAN ALMERA 2001 Service Manual

SEF095X
Component DescriptionNJEC0513The valve timing control system is utilized to control intake valve
opening and closing timing. Engine coolant temperature signals,
engine speed and throttle position are used to determine intake
valve timing.
The intake camshaft sprocket position is regulated by oil pressure
controlled by the intake valve timing control.
When ECM sends ON signal to intake valve timing control solenoid
valve, oil pressure is transmitted to camshaft sprocket. Then, intake
side camshaft is advanced.
OperationNJEC0514
Engine operating condition
Intake valve tim-
ing control sole-
noid valveIntake valve
opening and
closing timeValve overlap
Engine coolant
temperatureEngine speed B/FUEL SCHDL Neutral switch
20ÉC (68ÉF) -
70ÉC (158ÉF)
1,150 - 4,600
rpmAbove 3 msec
OFF ON Advance Increased
Above 70ÉC
(158ÉF)Above 7 msec
Conditions other than those above OFF Normal Normal
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0515
MONITOR ITEM CONDITION SPECIFICATION
INT/V SOL-B1+Engine: After warming up
+Lift up drive wheels and suitable
gear positionIdle OFF
Revving engine from 2,000 to
3,000 rpmON
ECM Terminals and Reference ValueNJEC0516Specification 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.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
1 Y/RIntake valve timing control
solenoid valve[Engine is running]
+Idle speedBATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis LogicNJEC0517
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P 1111
1111+An improper voltage signal is entered to ECM through
intake valve timing control solenoid valve.+Harness or connectors
(The intake valve timing control solenoid valve
circuit is open or shorted.)
+Intake valve timing control solenoid valve
D T C P 1111INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Component Description
EC-393

Diagnostic ProcedureNJEC0520
1 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect intake valve timing control solenoid valve harness connector.
SEF149X
3. Turn ignition switch ªONº.
4. Check voltage between terminal 1 and engine ground with CONSULT-II or tester.
SEF619X
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F35, E74 (If so equipped)
+Harness connectors M169, F113 (If so equipped)
+10A fuse
+Harness for open or short between valve timing control solenoid valve and fuse
©Repair harness or connectors.
3 CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 1 and intake valve timing control solenoid valve harness connector
terminal 2. Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 4.
NG©Repair open circuit or short to ground to short to power or connectors.
D T C P 1111INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Diagnostic Procedure
EC-397

ECM Terminals and Reference Value=NJEC0524Specification 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)
104 SBSwirl control valve control
solenoid valve[Engine is running]
+Engine coolant temperature is between 15ÉC
(59ÉF) to 40ÉC (104ÉF).
+Idle speed0-1V
[Engine is running]
+Engine coolant temperature is above 40ÉC
(104ÉF).
+Idle speedBATTERY VOLTAGE
(11 - 14V)
SEF098X
Component DescriptionNJEC0525SWIRL CONTROL VALVE CONTROL SOLENOID VALVENJEC0525S01The swirl control valve control solenoid valve responds to signals
from the ECM. When the ECM sends an ON (ground) signal, the
solenoid valve is bypassed to apply intake manifold vacuum to the
swirl control valve actuator. This operation closes the swirl control
valve. When the ECM sends an OFF signal, the vacuum signal is
cut and the swirl control valve opens.
On Board Diagnosis LogicNJEC0526
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1131
1131An improper voltage signal is sent to ECM through swirl
control valve control solenoid valve.+Harness or connectors
(The swirl control valve control solenoid valve
circuit is open or shorted.)
+Swirl control valve control solenoid valve
SEF058Y
DTC Confirmation ProcedureNJEC0527NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
With CONSULT-II
1) Turn ignition switch ªOFFº and wait at least 9 seconds, then
turn ignition switch ONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 5 seconds.
DTC P1131 SWIRL CONTROL VALVE SOLENOID VALVE (CIRCUIT) (WHERE
FITTED)
QG
ECM Terminals and Reference Value
EC-400

ECM Terminals and Reference Value=NJEC0487Specification 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)
13 LG/R Cooling fan relay[Engine is running]
+Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Cooling fan is operating0 - 0.6V
23 L/W Air conditioner switch[Engine is running]
+Both air conditioner switch and blower switch are
ªONº (Compressor operates)Approximately 0V
[Engine is running]
+Air conditioner switch is ªOFFºBATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis LogicNJEC0572If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1217
1217+The engine coolant temperature is extraordinary high,
even when the load is not heavy.+Harness or connectors
(The cooling fan circuit is open or shorted)
+Cooling fan
+Thermostat
+Improper ignition timing
+Engine coolant temperature sensor
+Blocked radiator
+Blocked front end (Improper fitting of nose mask)
+Crushed vehicle frontal area (Vehicle frontal is
collided but not repaired)
+Blocked air passage by improper installation of
front fog lamp or fog lamps.
+Improper mixture ratio of coolant
+Damaged bumper
For more information, refer to ªMAIN 12 CAUSES
OF OVERHEATINGº, EC-416.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the LC-18,
ªChanging Engine Coolantº. Also, replace the engine oil.
1) Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to use
coolant with the proper mixture ratio. Refer to MA-18, ªAnti-freeze Coolant Mixture Ratioº, ªRECOM-
MENDED FLUIDS AND LUBRICANTSº.
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC P1217 OVERHEAT (COOLING SYSTEM)QG
ECM Terminals and Reference Value
EC-407

SEF621WA
SEF646X
SEC163BA
Overall Function CheckNJEC0489Use this procedure to check the overall function of the cooling fan.
During this check, a DTC might not be confirmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high pressure fluid escaping from
the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by
turning it a quarter turn to allow built-up pressure to escape.
Then turn the cap all the way off.
With CONSULT-II
1) Check the coolant level and mixture ratio (using coolant tester)
in the reservoir tank and radiator.
Allow engine to cool before checking coolant level and
mixture ratio.
+If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-410.
+If the coolant mixture ratio is out of the range of 45 to 55%,
replace the coolant in the following procedure LC-18, ªChang-
ing Engine Coolantº.
2) Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-410.
3) Turn ignition switch ªONº.
4) Perform ªCOOLING FANº in ªACTIVE TESTº mode with CON-
SULT-II.
5) If the results are NG, go to ªDiagnostic Procedureº, EC-410.
Without CONSULT-II
1) Check the coolant level and mixture ratio (using coolant tester)
in the reservoir tank and radiator.
Allow engine to cool before checking coolant level and
mixture ratio.
+If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-410.
+If the coolant mixture ratio is out of the range of 45 to 55%,
replace the coolant in the following procedure LC-18, ªChang-
ing Engine Coolantº.
2) Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-410.
3) Start engine.
Be careful not to overheat engine.
4) Set temperature control lever to full cold position.
5) Turn air conditioner switch ªONº.
6) Turn blower fan switch ªONº.
7) Run engine at idle for a few minutes with air conditioner oper-
ating.
Be careful not to overheat engine.
8) Make sure that cooling fan operates. Refer to ªOPERATIONº
table for cooling fan, EC-406.
If NG, go to ªDiagnostic Procedureº, EC-410.
DTC P1217 OVERHEAT (COOLING SYSTEM)QG
On Board Diagnosis Logic (Cont'd)
EC-408

Diagnostic ProcedureNJEC0491
1 CHECK COOLING FAN OPERATION
1. Start engine and let it idle.
2. Set temperature lever at full cold position.
3. Turn air conditioner switch ªONº.
4. Turn blower fan switch ªONº.
5. Make sure that cooling fans-1 and -2 operate.
SEC163BA
OK or NG
OK©GO TO 11.
NG©GO TO 2.
2 CHECK AIR CONDITIONER OPERATION
Is air conditioner operating?
(Check operation of compressor and blower motor.)
OK or NG
OK©GO TO 3.
NG©Check for failure of air conditioner to operate. Refer to HA section.
DTC P1217 OVERHEAT (COOLING SYSTEM)QG
Diagnostic Procedure
EC-410

12 CHECK RADIATOR CAP
Apply pressure to cap with a tester.
SLC755A
Radiator cap relief pressure:
59 - 98 kPa (0.59 - 0.98 bar, 0.6 - 1.0 kg/cm2,9-14psi)
OK or NG
OK©GO TO 13.
NG©Replace radiator cap.
13 CHECK THERMOSTAT
1. Check valve seating condition at normal room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
SLC343
Valve opening temperature:
82ÉC (180ÉF) [standard]
Valve lift:
More than 8 mm/95ÉC (0.31 in/203ÉF)
3. Check if valve is closed at 5ÉC (9ÉF) below valve opening temperature.
For details, refer to LC section (ªThermostatº).
OK or NG
OK©GO TO 14.
NG©Replace thermostat
14 CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to ªCOMPONENT INSPECTIONº, EC-206.
OK or NG
OK©GO TO 15.
NG©Replace engine coolant temperature sensor.
DTC P1217 OVERHEAT (COOLING SYSTEM)QG
Diagnostic Procedure (Cont'd)
EC-414

Main 12 Causes of Overheating=NJEC0492
Engine Step Inspection item Equipment Standard Reference page
OFF 1+Blocked radiator
+Blocked condenser
+Blocked radiator grille
+Blocked bumper+Visual No blocking Ð
2+Coolant mixture+Coolant tester 50 - 50% coolant mixture See MA-16, ªRECOM-
MENDED FLUIDS AND
LUBRICANTSº.
3+Coolant level+Visual Coolant up to MAX level
in reservoir tank and
radiator filler neckSee LC-18, ªChanging
Engine Coolantº.
4+Radiator cap+Pressure tester 59 - 98 kPa
(0.59 - 0.98 bar, 0.6 - 1.0
kg/cm
2,9-14psi) (Limit)See LC-10, ªSystem
Checkº.
ON*
25+Coolant leaks+Visual No leaks See LC-10, ªSystem
Checkº.
ON*
26+Thermostat+Touch the upper and
lower radiator hosesBoth hoses should be
hotSee LC-15, ªThermostatº
and LC-16, ªRadiatorº.
ON*
17+Cooling fan+CONSULT-II Operating See ªTROUBLE DIAG-
NOSIS FOR OVER-
HEATº (EC-406).
OFF 8+Combustion gas leak+Color checker chemi-
cal tester 4 Gas ana-
lyzerNegative Ð
ON*
39+Coolant temperature
gauge+Visual Gauge less than 3/4
when drivingÐ
+Coolant overflow to
reservoir tank+Visual No overflow during driv-
ing and idlingSee LC-18, ªChanging
Engine Coolantº.
OFF*
410+Coolant return from
reservoir tank to radia-
tor+Visual Should be initial level in
reservoir tankSee LC-19, ªRefilling
Engine Coolantº.
OFF 11+Cylinder head+Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See EM-37, ªInspectionº,
ªCYLINDER HEADº.
12+Cylinder block and
pistons+Visual No scuffing on cylinder
walls or pistonSee EM-56, ªInspectionº,
ªCYLINDER BLOCKº.
*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-24, ª OVERHEATING CAUSE ANALYSISº.
SEF745U
Component InspectionNJEC0493COOLING FAN RELAYNJEC0493S01Check continuity between terminals 3 and 5, 6 and 7.
Conditions Continuity
12V direct current supply between terminals 1 and
2Ye s
No current supply No
If NG, replace relay.
DTC P1217 OVERHEAT (COOLING SYSTEM)QG
Main 12 Causes of Overheating
EC-416

SEF599K
Component DescriptionNJEC0342The 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.
It is used only for the on board diagnosis.
SEF068X

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.
On Board Diagnosis LogicNJEC0343
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1401
1401A) An excessively low voltage from the EGR tempera-
ture sensor is sent to ECM even when engine cool-
ant temperature is low.+Harness or connectors
(The EGR temperature sensor circuit is shorted.)
+EGR temperature sensor
+Malfunction of EGR function
B) An excessively high voltage from the EGR tempera-
ture sensor is sent to ECM even when engine cool-
ant temperature is high.+Harness or connectors
(The EGR temperature sensor circuit is open.)
+EGR temperature sensor
+Malfunction of EGR function
DTC Confirmation ProcedureNJEC0344Perform ªPROCEDURE FOR MALFUNCTION Aº first. If 1st trip
DTC cannot be confirmed, perform ªPROCEDURE FOR MAL-
FUNCTION Bº.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
DTC P1401 EGR TEMPERATURE SENSOR (WHERE FITTED)QG
Component Description
EC-418

SEF174Y
PROCEDURE FOR MALFUNCTION A=NJEC0344S01With CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Verify that ªCOOLAN TEMP/Sº is less than 50ÉC (122ÉF).
If the engine coolant temperature is above the range, cool
the engine down.
4) Start engine and let it idle for at least 5 seconds.
5) If 1st trip DTC is detected, go to ªDiagnostic Procedureº,
EC-423.
With GST
Follow the procedure ªWith CONSULT-IIº above.
SEF200Y
PROCEDURE FOR MALFUNCTION BNJEC0344S02CAUTION:
Always drive vehicle at a safe speed.
TESTING CONDITION:
Always perform the test at a temperature above þ10ÉC (14ÉF).
With CONSULT-II
1) Start engine and warm it up to above 80ÉC (176ÉF).
2) Select ªEGR VOL CONT/Vº in ªACTIVE TESTº mode with
CONSULT.
3) Hold engine speed at 1,500 rpm.
4) Touch ªQuº and set the EGR volume control valve opening to
50 step and check EGR TEMP SEN.
EGR TEMP SEN should decrease to less than 1.0V.
If the check result is NG, go to ªDIAGNOSTIC PROCEDUREº,
EC-423.
If the check result is OK, go to the following step.
SEF201Y
5) Turn ignition switch ªOFFº and wait at least 9 seconds.
6) Start engine and maintain the following conditions for at least
5 consecutive seconds.
ENG SPEED Above 2,400 rpm
VHCL SPEED SE Above 90 km/h (56 MPH) or more
B/FUEL SCHDL 4.0 - 4.8 msec
Selector lever Suitable position
7) If 1st trip DTC is detected, go to ªDiagnostic Procedureº,
EC-423.
DTC P1401 EGR TEMPERATURE SENSOR (WHERE FITTED)QG
DTC Confirmation Procedure (Cont'd)
EC-419