1999 NISSAN PRIMERA engine coolant

2) Check engine coolant temperature in MODE 1 with GST.
Engine coolant temperature: 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 coolant temperature with a fan or means other than
ambient air. Doing so may produce an inaccurate diagnostic
result.
3) Start engine and let it idle monitoring the value of ªCOOLAN
TEMP/Sº. When the engine coolant temperature reaches 70ÉC
(158ÉF), immediately go to the next step.
4) Maintain the following conditions for at least 1 minute.
Engine speed Above 2,400 rpm
Vehicle speed Above 90 km/h (56 MPH)
Selector lever 4th or 5th
5) Stop vehicle.
6) Turn ignition switch ªOFFº and wait at least 9 seconds, then
turn ªONº.
7) Repeat step 2 to 4.
8) Select ªMODE 3º with GST.
9) If DTC is detected, go to ªDiagnostic Procedureº, EC-QG-249.
IWhen using GST, ªDTC CONFIRMATION PROCEDUREº
should be performed twice as much as when using CON-
SULT-II or ECM (Diagnostic Test Mode II) because GST
cannot display MODE 7 (1st trip DTC) concerning this
diagnosis. Therefore, using CONSULT-II or ECM (Diagnos-
tic Test Mode II) is recommended.
DTC P0400 EGR FUNCTION (CLOSE) (IF SO EQUIPPED)QG16I18DE
DTC Confirmation Procedure (Cont'd)
EC-247

DescriptionNCEC0504SYSTEM DESCRIPTIONNCEC0504S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor Engine speed
EGR control EGR volume control valve Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle position
Vehicle speed sensor or ABS actuator and
electric unit (control unit)Vehicle speed
Battery Battery voltage
This system controls flow rate of EGR led from exhaust manifold
to intake manifold. The opening of the EGR by-pass passage in the
EGR volume control valve changes to control the flow rate. A
built-in step motor moves the valve in steps corresponding to the
ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined
by considering various engine conditions. The EGR volume control
valve remains closed under the following conditions.
ILow engine coolant temperature
IEngine starting
IHigh-speed engine operation
IExtremely light load engine operation
IEngine idling
IExcessively high engine coolant temperature
IWide open throttle
IMass air flow sensor malfunction
ILow battery voltage
COMPONENT DESCRIPTIONNCEC0504S02The 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.
SEF551W
SEF552W
DTC P0403 EGR VOLUME CONTROL VALVE (CIRCUIT)
(IF SO EQUIPPED)QG16I18DE
Description
EC-252

DescriptionNCEC0248SYSTEM DESCRIPTIONNCEC0248S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
EVAP can-
ister purge
controlEVAP canister purge volume
control solenoid valve Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Battery Battery voltage
Ignition switch Start signal
Throttle position sensor Throttle position
Heated oxygen 1 sensorDensity of oxygen in exhaust gas
(Mixture ratio feedback signal)
Vehicle speed sensor or ABS actuator and
electric unit (control unit)Vehicle speed
This system controls flow rate of fuel vapor from the EVAP canis-
ter. The opening of the vapor by-pass passage in the EVAP canis-
ter purge volume control solenoid valve changes to control the flow
rate. The EVAP canister purge volume control solenoid valve
repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control.
The optimum value stored in the ECM is determined by consider-
ing various engine conditions. When the engine is operating, the
flow rate of fuel vapor from the EVAP canister is regulated as the
air flow changes.
COMPONENT DESCRIPTIONNCEC0248S02The EVAP canister purge volume control solenoid valve uses a
ON/OFF duty to control the flow rate of fuel vapor from the EVAP
canister. The EVAP canister purge volume control solenoid valve
is moved by ON/OFF pulses from the ECM. The longer the ON
pulse, the greater the amount of fuel vapor that will flow through the
valve.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0249
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/VIEngine: After warming up
INo-load
ILift up drive wheels and shift to
1st gear position.
IAir conditioner switch ªOFFºIdle 0%
More than 2,000 rpm Ð
SEF337U
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE (CIRCUIT)QG16I18DE
Description
EC-262

DescriptionNCEC0279SYSTEM DESCRIPTIONNCEC0279S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
Idle air con-
trolIACV-AAC valve Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle position
PNP switch Park/Neutral position
Air conditioner switch Air conditioner operation
Power steering oil pressure switch Power steering load signal
Battery Battery voltage
Vehicle speed sensor or ABS actuator and
electric unit (control unit)Vehicle speed
Cooling fan Cooling fan operation
Electrical load Electrical load signal
This system automatically controls engine idle speed to a specified
level. Idle speed is controlled through fine adjustment of the
amount of air which by-passes the throttle valve via IACV-AAC
valve. The IACV-AAC valve changes the opening of the air by-pass
passage to control the amount of auxiliary air. This valve is actu-
ated by a step motor built into the valve, which moves the valve in
the axial direction in steps corresponding to the ECM output sig-
nals. One step of IACV-AAC valve movement causes the respec-
tive opening of the air by-pass passage. (i.e. when the step
advances, the opening is enlarged.) The opening of the valve is
varied to allow for optimum control of the engine idling speed. The
crankshaft position sensor (POS) detects the actual engine speed
and sends a signal to the ECM. The ECM then controls the step
position of the IACV-AAC valve so that engine speed coincides with
the target value memorized in ECM. The target engine speed is the
lowest speed at which the engine can operate steadily. The opti-
mum value stored in the ECM is determined by taking into consid-
eration various engine conditions, such as during warm up,
deceleration, and engine load (air conditioner, power steering, cool-
ing fan operation and electrical load).
COMPONENT DESCRIPTIONNCEC0279S02The IACV-AAC valve is operated by a step motor for centralized
control of auxiliary air supply. This motor has four winding phases
and is actuated by the output signals of ECM which turns ON and
OFF two windings each in sequence. Each time the IACV-AAC
valve opens or closes to change the auxiliary air quantity, the ECM
sends a pulse signal to the step motor. When no change in the
auxiliary air quantity 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.
SEF937W
DTC P0505 IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVEQG16I18DE
Description
EC-274

Component DescriptionNCEC0513The 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.
OperationNCEC0514
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
NCEC0515
MONITOR ITEM CONDITION SPECIFICATION
INT/V SOL-B1IEngine: After warming upIdle OFF
Revving engine with full throttle
opening (Under 4,600 rpm)ON
ECM Terminals and Reference ValueNCEC0516Specification data are reference values and are measured between each terminal and engine 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 valveIgnition ªONºBATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis LogicNCEC0517
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P 1111
1111IAn improper voltage signal is entered to ECM through
intake valve timing control solenoid valve.IHarness or connectors
(The intake valve timing control solenoid valve
circuit is open or shorted.)
IIntake valve timing control solenoid valve
SEF095X
D T C P 1111 I N TA K E VA LV ETIMING CONTROL
SOLENOID VALVEQG16I18DE
Component Description
EC-284

System DescriptionNCEC0433COOLING FAN CONTROLNCEC0433S01
Sensor Input Signal to ECMECM func-
tionActuator
Vehicle speed sensor or ABS actuator and
electric unit (control unit)Vehicle speed
Cooling fan
controlCooling fan relay(s) Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner ªONº signal
Ignition switch Start signal
Refrigerant pressure sensor Refrigerant pressure
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refriger-
ant pressure, and air conditioner ON signal. The control system has ON-OFF control.
The refrigerant pressure sensor uses an electrostatic volume pressure transducer to convert refrigerant pres-
sure to voltage. The transducer is installed in the liquid tank of the air conditioner system.
OPERATIONNCEC0433S02Engine coolant temperatures at which the cooling fan turns ªONº are indicated in the Table below.
Vehicle speed km/h (MPH)
Air conditioner switchHigh pressure of
refrigerant
kPa (bar, kg/cm
2, psi)Less than 20 (12) 20 - 80 (12 - 50) More than 80 (50)
ONMore than 1,760
(17.6, 17.95, 255)Always Always More than 95ÉC (203ÉF)
Less than 1,760
(17.6, 17.95, 255)Always More than 95ÉC (203ÉF) More than 95ÉC (203ÉF)
OFFMore than 100ÉC
(212ÉF)More than 95ÉC (203ÉF) More than 95ÉC (203ÉF)
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0486Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
AIR COND SIGIEngine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates)ON
COOLING FANIAfter warming up engine, idle
the engine.
IAir conditioner switch: OFFEngine coolant temperature is less
than 99ÉC (210ÉF)OFF
Engine coolant temperature is
100ÉC (212ÉF) or moreON
SEF099X
DTC P1217 OVERHEAT (COOLING SYSTEM)QG16I18DE
System Description
EC-289

ECM Terminals and Reference Value=NCEC0487Specification 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)
13 LG/R Cooling fan relay[Engine is running]
ICooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
ICooling fan is operatingApproximately 0V
23 L/W Air conditioner switch[Engine is running]
IBoth air conditioner switch and blower switch are
ªONº (Compressor operates)Approximately 0V
[Engine is running]
IAir conditioner switch is ªOFFºBATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis LogicNCE0488If 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.
Diagnostic
Trouble Code
No.Malfunction is detected when ...Check Items
(Possible Cause)
P1217
1217ICooling fan does not operate properly (Overheat).
ICooling fan system does not operate properly (Overheat).
IEngine coolant was not added to the system using the
proper filling method.IHarness or connectors
(The cooling fan circuit is open or shorted).
ICooling fan
IRadiator hose
IRadiator
IRadiator cap
IWater pump
IThermostat
For more information, refer to ªMAIN 12 CAUSES
OF OVERHEATINGº, EC-QG-298.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the MA
section (ªChanging Engine Coolantº, ªENGINE MAINTENANCEº). 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 section (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)QG16I18DE
ECM Terminals and Reference Value
EC-290

Overall Function CheckNCEC0489Use 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 in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
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-QG-294.
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-QG-294.
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-QG-
294.
Without CONSULT-II
1) Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
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-QG-294.
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-QG-294.
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.
If NG, go to ªDiagnostic Procedureº, EC-QG-294.
SEF621WA
SEF111X
SEC163BA
DTC P1217 OVERHEAT (COOLING SYSTEM)QG16I18DE
Overall Function Check
EC-291