dtc 34 NISSAN PRIMERA 1999 Electronic Repair Manual

Diagnostic Procedure=NCEC0298
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº.
See previous page.
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch ªONº.
2. Select MODE 4 with GST.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº.
See previous page.
5. Is the 1st trip DTC P0605 displayed again?
YesorNo
Ye s©Replace ECM.
No©INSPECTION END
DTC P0605 ECMSR20DE
Diagnostic Procedure
EC-278

System DescriptionNCEC0433COOLING FAN CONTROLNCEC0433S01
Sensor Input Signal to ECMECM func-
tionActuator
Vehicle speed sensor or ABS actuator and
electric unit (control unit)Vehicle speed
ECM Cooling 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.
OPERATIONNCEC0433S02
SEF099X
SEF198X Refrigerant pressure is less than 1.76 Mpa.
Refrigerant pressure is between 1.76 Mpa and 2.06 Mpa.Refrigerant pressure is above 2.06 Mpa. 20 (12) 80 (50)
Vehicle speed km/h (MPH)
20 (12) 80 (50)
Vehicle speed km/h (MPH)20 (12) 80 (50)
Vehicle speed km/h (MPH)Cooling fans operate
at ªHighº speed.
Cooling fans operate
at ªLowº speed.
Cooling fans
do no operate 105 (221)
100 (212)
95 (203) 105 (221)
100 (212)
95 (203)105 (221)
100 (212)
95 (203)
Engine coolant temperature
ÉC (ÉF)
Engine coolant temperature
ÉC (ÉF)
Engine coolant temperature
ÉC (ÉF)
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
System Description
EC-279

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 94ÉC
(201ÉF) or lessOFF
Engine coolant temperature is between
95ÉC (203ÉF) and 104ÉC (219ÉF)LOW
Engine coolant temperature is 105ÉC
(221ÉF) or moreHIGH
ECM Terminals and Reference ValueNCEC0487Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL 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 Ð 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)
74 R/LRefrigerant pressure
sensor[Engine is running]
IWarm-up condition
IIdle speed
IAir conditioner is ªONºMore than 1.5V
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.
DTC 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-SR-288.
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,
ªRECOMMENDED FLUIDS AND LUBRICANTSº).
2)After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
CONSULT-II Reference Value in Data Monitor Mode
EC-280

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