NISSAN PRIMERA 1999 Electronic Repair Manual

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-SR-284.
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-SR-284.
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-SR-
284.
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-SR-284.
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-SR-284.
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-SR-284.
SEF621WA
SEF111X
SEC163BA
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Overall Function Check
EC-281

Wiring DiagramNCEC0490
YEC847
Detectable line for DTC
Non-detectable line for DTC
COOLING
FA N
RELAY FUSE
BLOCK
(J/B)
COOLING
FA N
MOTOR-2 Refer to EL-POWER. BATTERY
COOLING
FA N
MOTOR-1 IGNITION SWITCH
ON or START
REFER TO THE FOLLOWING
FUSE BLOCK -
Junction Box (J/B)
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Wiring Diagram
EC-282

YEC848
: Detectable line for DTC
: Non-detectable line for DTC
: Hyper CVT models REFRIGERANT
SENSOR
TCM
(TRANSMISSION
CONTROL
MODULE) ECM
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Wiring Diagram (Cont'd)
EC-283

Diagnostic ProcedureNCEC0491
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.
3 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect cooling fan relay.
3. Turn ignition switch ªONº.
4. Check voltage between terminals 2, 3 and ground with CONSULT-II or tester.
SEF112XVoltage: Battery voltage
OK or NG
OK©GO TO 5.
NG©GO TO 4.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure
EC-284

4 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M70, E125
I10A fuse
I40A fusible link
IHarness for open or short between cooling fan relay and fuse
©Repair open circuit or short to ground or short to power in harness or connectors.
5 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
SEF225X3. Check harness continuity between relay terminal 5 and motor-1 terminal 1, motor-1 terminal 2 and body ground. Refer to wiring dia-
gram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
5. Check harness continuity between relay terminal 5 and motor-2 terminal 1, motor-2 terminal 2 and body ground. Refer to wiring dia-
gram.
Continuity should exist.
6. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 6.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK OUTPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 13 and relay terminal 1. Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 8.
NG©GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E42, F4
IHarness for open or short between cooling fan relay and ECM
©Repair open circuit or short to ground or short to power in harness or connectors.
Cooling fan motor
harness connector Left sideRight side
(View from under the
vehicle)
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-285

8 CHECK COOLING FAN RELAY
Refer to ªComponent Inspectionº, EC-SR-289.
OK or NG
OK©GO TO 9.
NG©Replace cooling fan relay.
9 CHECK COOLING FAN MOTORS-1 AND -2
Refer to ªComponent Inspectionº, EC-SR-289.
OK or NG
OK©GO TO 10.
NG©Replace cooling fan motors.
10 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
11 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/cm2, 23 psi)
CAUTION:
Higher than the specified pressure may cause radiator damage.
SLC754APressure should not drop.
OK or NG
OK©GO TO 12.
NG©Check the following for leak
IHose
IRadiator
IWater pump
Refer to LC section (ªWater Pumpº).
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-286

12 CHECK RADIATOR CAP
Apply pressure to cap with a tester.
SLC755ARadiator 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.
SLC343Valve opening temperature:
76.5ÉC (170ÉF) [standard]
Valve lift:
More than 8 mm/90ÉC (0.31 in/194ÉF)
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-SR-136.
OK or NG
OK©GO TO 15.
NG©Replace engine coolant temperature sensor.
15 CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to ªMAIN 12 CAUSES OF OVERHEATINGº, EC-SR-288.
©INSPECTION END
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-287

Main 12 Causes of OverheatingNCEC0492
Engine Step Inspection item Equipment Standard Reference page
OFF 1IBlocked radiator
IBlocked condenser
IBlocked radiator grille
IBlocked bumperIVisual No blocking Ð
2ICoolant mixtureICoolant tester 50 - 50% coolant mixture See ªRECOMMENDED
FLUIDS AND LUBRI-
CANTSº in MA section.
3ICoolant levelIVisual Coolant up to MAX level in
reservoir tank and radiator
filler neckSee ªChanging Engine
Coolantº, ªENGINE
MAINTENANCEº in MA
section.
4IRadiator capIPressure tester 59 - 98 kPa (0.59 - 0.98
bar, 0.6 - 1.0 kg/cm
2,9-
14 psi) (Limit)See ªSystem Checkº,
ªENGINE COOLING
SYSTEMº in LC section.
ON*
25ICoolant leaksIVisual No leaks See ªSystem Checkº,
ªENGINE COOLING
SYSTEMº in LC section.
ON*
26IThermostatITouch the upper and
lower radiator hosesBoth hoses should be hot See ªThermostatº and
ªRadiatorº, ªENGINE
COOLING SYSTEMº in
LC section.
ON*
17ICooling fanICONSULT-II Operating See ªTROUBLE DIAG-
NOSIS FOR OVER-
HEATº (EC-SR-279).
OFF 8ICombustion gas leakIColor checker chemi-
cal tester 4 Gas ana-
lyzerNegative Ð
ON*
39ICoolant temperature
gaugeIVisual Gauge less than 3/4 when
drivingÐ
ICoolant overflow to re-
servoir tankIVisual No overflow during driving
and idlingSee ªChanging Engine
Coolantº, ªENGINE
MAINTENANCEº in MA
section.
OFF*
410ICoolant return from re-
servoir tank to radiatorIVisual Should be initial level in
reservoir tankSee ªENGINE MAINTE-
NANCEº in MA section.
OFF 11ICylinder headIStraight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See ªInspectionº, ªCYL-
INDER HEADº in EM
section.
12ICylinder block and pis-
tonsIVisual No scuffing on cylinder
walls or pistonSee ªInspectionº, ªCYL-
INDER BLOCKº in EM
section.
*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 ªOVERHEATING CAUSE ANALYSISº in LC section.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Main 12 Causes of Overheating
EC-288

Component InspectionNCEC0493COOLING FAN RELAYSNCEC0493S01Check continuity between terminals 3 and 5.
Conditions Continuity
12V direct current supply between terminals 1 and
2Ye s
No current supplyNo
If NG, replace relay.
COOLING FAN MOTORS-1 AND -2NCEC0493S021. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Terminals
(+) (þ)
Cooling fan motor 1 2
Cooling fan motor should operate.
If NG, replace cooling fan motor.
REFRIGERANT PRESSURE SENSORNCEC0493S03With the refrigerant pressure sensor installed on the vehicle, start
the engine and while idling, read the voltage at refrigerant pressure
sensor terminals 1 and 2. (Refer to wiring diagram.)
Air conditioner condition Voltage V
OFFMore than approx. 0.3V
ONMore than approx. 1.5
ON to OFFDecreasing gradually
If results are NG, check for 5V between refrigerant sensor termi-
nal 3 and ground. If there is 5V, replace sensor.
SEF511P
SEF721Q
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Component Inspection
EC-289

Component DescriptionNCEC0327The crankshaft position sensor (OBD) is located on the transmis-
sion housing facing the gear teeth (cogs) of the flywheel or drive
plate. It detects the fluctuation of the engine revolution.
The sensor consists of a permanent magnet, core and coil.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.
This sensor is not used to control the engine system.
It is used only for the on board diagnosis.
ECM Terminals and Reference ValueNCEC0328Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (AC Voltage)
58 B Sensors' ground[Engine is running]
IWarm-up condition
IIdle speedApproximately 0V
65 WCrankshaft position sen-
sor (OBD)[Engine is running]
IWarm-up condition
IIdle speed3 - 5V (AC range)
SEF721W
0.2 ms
[Engine is running]
IEngine speed is 2,000 rpm6 - 9V (AC range)
SEF722W
0.2 ms
On Board Diagnosis LogicNCEC0329
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1336
1336IA chipping of the flywheel or drive plate gear tooth (cog)
is detected by the ECM.IHarness or connectors
ICrankshaft position sensor (OBD)
IDrive plate/Flywheel
SEF956N Core
Permanent magnetCoil
SEF226X Crankshaft position
sensor (OBD) harness connector
Cooling fan motor
(Left side)
DTC P1336 CRANKSHAFT POSITION SENSOR
(CKPS) (OBD) (COG)SR20DE
Component Description
EC-290