2001 NISSAN PICK-UP Repair Manual

On Board Diagnosis LogicNEEC1534If 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+Engine coolant temperature reaches an abnormally high
temperature.+Cooling fan (crankshaft driven)
Radiator hose
+Radiator
+Radiator cap
+Water pump
+Thermostat
+Engine coolant temperature sensor
For more information, refer to ªMAIN 11 CAUSES
OF OVERHEATINGº, EC-3348.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to MA section, 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 section, ªAnti-freeze Coolant Mixture
Ratioº.
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
SEF621W
Overall Function CheckNEEC1535WARNING:
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.
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-3345.
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-3345.
DTC P1217 ENGINE OVER
TEMPERATURE
KA24DE (EURO OBD)
On Board Diagnosis Logic
EC-3344

Diagnostic ProcedureNEEC1536
1 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.
SLC754A
Pressure should not drop.
OK or NG
OK©GO TO 2.
NG©Check the following for leak.
+Hose
+Radiator
+Water pump
Refer to LC section, ªWater Pumpº.
2 CHECK RADIATOR CAP
Apply pressure to cap with a tester.
SLC755A
Radiator cap relief pressure:
78 - 98 kPa (0.78 - 0.98 bar, 0.8 - 1.0 kg/cm2, 11 - 14 psi)
OK or NG
OK©GO TO 3.
NG©Replace radiator cap.
DTC P1217 ENGINE OVER
TEMPERATURE
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3345

3 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:
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 4.
NG©Replace thermostat.
DTC P1217 ENGINE OVER
TEMPERATURE
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3346

4 CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check resistance as shown in the figure.
SEF152P

MTBL0285
SEF012P
OK or NG
OK©GO TO 5.
NG©Replace engine coolant temperature sensor.
5 CHECK MAIN 11 CAUSES
If the cause cannot be isolated, go to ªMAIN 11 CAUSES OF OVERHEATINGº, EC-3348.
©INSPECTION END
Perform FINAL CHECK by the following procedure after repair
is completed.
1. Warm up engine. Run the vehicle for at least 20 minutes. Pay
attention to engine coolant temperature gauge on the instru-
ment panel. If the reading shows an abnormally high
temperature, another part may be malfunctioning.
2. Stop vehicle and let engine idle. Check the intake and exhaust
systems for leaks by listening for noise or visually inspecting
the components.
3. Allow engine to cool and visually check for oil and coolant
leaks. Then, perform ªOVERALL FUNCTION CHECKº.
DTC P1217 ENGINE OVER
TEMPERATURE
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3347

Main 11 Causes of OverheatingNEEC1537
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 mix-
tureSee MA section, ªRECOM-
MENDED FLUIDS AND
LUBRICANTSº.
3+Coolant level+Visual Coolant up to MAX level
in reservoir tank and
radiator filler neckSee MA section, ªChang-
ing Engine Coolantº.
4+Radiator cap+Pressure tester 78 - 98 kPa
(0.78 - 0.98 bar,
0.8 - 1.0 kg/cm
2,
11 - 14 psi)
59-98kPa
(0.59 - 0.98 bar,
0.6 - 1.0 kg/cm
2,
9 - 14 psi) (Limit)See LC section, ªSystem
Checkº.
ON*
25+Coolant leaks+Visual No leaks See LC section, ªSystem
Checkº.
ON*
26+Thermostat+Touch the upper and
lower radiator hosesBoth hoses should be
hotSee LC section, ªThermo-
statº and LC section,
ªRadiatorº.
OFF 7+Combustion gas leak+Color checker chemical
tester 4 Gas analyzerNegative Ð
ON*
38+Coolant temperature
gauge+Visual Gauge less than 3/4
when drivingÐ
+Coolant overflow to
reservoir tank+Visual No overflow during driv-
ing and idlingSee MA section, ªChang-
ing Engine Coolantº.
OFF*
49+Coolant return from
reservoir tank to
radiator+Visual Should be initial level in
reservoir tankSee MA section, ªENGINE
MAINTENANCEº.
OFF 10+Cylinder head+Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See EM section, ªInspec-
tionº.
11+Cylinder block and
pistons+Visual No scuffing on cylinder
walls or pistonSee EM section, ªInspec-
tion².
*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 ENGINE OVER
TEMPERATURE
KA24DE (EURO OBD)
Main 11 Causes of Overheating
EC-3348

SEF956N
SEF335V
Component DescriptionNEEC0327The 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 ValueNEEC0328Specification 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 (AC Voltage)
43 B Sensors' ground[Engine is running]
+Warm-up condition
+Idle speedApproximately 0V
47 LCrankshaft position
sensor (OBD)[Engine is running]
+Warm-up condition
+Idle speedApprox. 0V
[Engine is running]
+Engine speed is 2,000 rpmApprox. 0V
DTC P1336 CKP SENSOR (OBD)KA24DE (EURO OBD)
Component Description
EC-3349

On Board Diagnosis LogicNEEC0329
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1336
1336+A chipping of the flywheel or drive plate gear tooth (cog)
is detected by the ECM.+Harness or connectors
+Crankshaft position sensor (OBD)
+Flywheel
SEF058Y
DTC Confirmation ProcedureNEEC0330NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch OFF and wait at least 5 seconds before
conducting the next test.
With CONSULT-II
1) Turn ignition switch ON and select ªDATA MONITORº mode
with CONSULT-II.
2) Start engine and run it for at least 2 minutes at idle speed.
3) If 1st trip DTC is detected, go to ªDiagnostic Procedureº,
EC-3352.
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P1336 CKP SENSOR (OBD)KA24DE (EURO OBD)
On Board Diagnosis Logic
EC-3350

Wiring DiagramNEEC0331
GEC236A
DTC P1336 CKP SENSOR (OBD)KA24DE (EURO OBD)
Wiring Diagram
EC-3351