2005 NISSAN X-TRAIL cooling system

DTC P1217 ENGINE OVER TEMPERATURE
EC-755
[QR (WITHOUT EURO-OBD)]
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DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
System DescriptionEBS0111F
NOTE:
If DTC P1217 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-633, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
COOLING FAN CONTROL
*1: This signal is sent to ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
OPERATION
Sensor Input Signal to ECM ECM function Actuator
Wheel sensor*
1Vehicle speed
Cooling fan
controlCooling fan relay Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner ON signal
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Battery
Battery voltage*2
Refrigerant pressure sensor Refrigerant pressure
PBIB1987E

EC-756
[QR (WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE

CONSULT-II Reference Value in Data Monitor ModeEBS0111G
Specification data are reference values.
On Board Diagnosis LogicEBS0111H
If 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.
This self-diagnosis has the one trip detection logic.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to CO-9, "
Changing Engine
Coolant" . Also, replace the engine oil. Refer to LU-8, "Changing 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-19, "
Engine Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS0111I
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure 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.
MONITOR ITEM CONDITION SPECIFICATION
AIR COND SIG

Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
COOLING FAN

Engine: After warming up, idle
the engine

Air conditioner switch: OFFEngine coolant temperature is 94°C
(201°F) or lessOFF
Engine coolant temperature is
between 95°C (203°F) and 99°C
(210°F) or moreLOW
Engine coolant temperature is 100°C
(212°F) or moreHIGH
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217Engine over tempera-
ture (Overheat)

Cooling fan does not operate properly (Over-
heat).

Cooling fan system does not operate prop-
erly (Overheat).

Engine coolant was not added to the system
using the proper filling method.

Engine coolant is not within the specified
range.

Harness or connectors
(The cooling fan circuit is open or
shorted.)

Cooling fan

Cooling fan relays

Radiator hose

Radiator

Radiator cap

Water pump

Thermostat
For more information, refer to EC-769,
"Main 12 Causes of Overheating" .

EC-764
[QR (WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE

6. CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the pressure drops.
CAUTION:
Higher than the specified pressure may cause radiator damage.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following for leak.

Hose

Radiator

Water pump (Refer to CO-21, "WATER PUMP" .)
>> Repair or replace.
8. CHECK RADIATOR CAP
Apply pressure to cap with a tester and check radiator cap relief
pressure.
OK or NG
OK >> GO TO 9.
NG >> Replace radiator cap.Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23psi)
Pressure should not drop.
SLC756AA
Radiator cap
relief pressure:59 - 98 kPa (0.59 - 0.98 bar, 0.6 - 1.0
kg/cm
2 , 9 - 14 psi)
SLC755AC

EC-914
[QR (WITHOUT EURO-OBD)]
REFRIGERANT PRESSURE SENSOR

REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionEBS0114U
The refrigerant pressure sensor is installed at the condenser of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
PBIB0503E
PBIB2657E

EC-986
[YD (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM

System ChartEBS0116V
*1: The input signal is sent to the ECM through CAN communication line.
*2: The output signal is sent from the ECM through CAN communication line.
Fuel Injection Control SystemEBS0116W
SYSTEM DESCRIPTION
Three types of fuel injection control are provided to accommodate engine operating conditions; normal control,
idle control and start control. The ECM determines the appropriate fuel injection control. Under each control,
the amount of fuel injected is adjusted to improve engine performance.
Pulse signals are sent to fuel injectors according to the input signals to adjust the amount of fuel injected to
preset value.
START CONTROL
Input/Output Signal Chart
When the ECM receives a start signal from the ignition switch, the
ECM adapts the fuel injection system for the start control. The
amount of fuel injected at engine starting is a preset program value
in the ECM. The program is determined by the engine speed, engine
coolant temperature and fuel rail pressure.
For better startability under cool engine conditions, the lower the
coolant temperature becomes, the greater the amount of fuel
injected. The ECM ends the start control when the engine speed
reaches the specific value, and shifts the control to the normal or idle
control.
Input (Sensor) ECM Function Output (Actuator)

Accelerator pedal position sensor

Fuel rail pressure sensor

Fuel pump temperature sensor

Engine coolant temperature sensor

Mass air flow sensor

Intake air temperature sensor

Crankshaft position sensor

Camshaft position sensor

Turbocharger boost sensor

Vehicle speed sensor*1

ESP/TCS/ABS control unit*1

Ignition switch

Stop lamp switch

Air conditioner switch*1

Park/neutral position switch

Battery voltage

Fuel level switch

Power steering pressure switch Fuel injection control Fuel injector and Fuel pump
Fuel injection timing control Fuel injector and Fuel pump
Fuel cut control Fuel injector and Fuel pump
Glow control system
Glow relay and glow indicator lamp*
2
On board diagnostic system
Malfunction indicator (MI)*2
EGR volume control EGR volume control valve
Cooling fan control Cooling fan relay
Turbocharger boost controlTurbocharger boost control solenoid
valve
Fuel transport pump control Fuel transport pump relay
Air conditioning cut control Air conditioner relay
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection
control (start
control)Fuel injector
Fuel pump Crankshaft position sensor Engine speed
Camshaft position sensor Piston position
Ignition switch Start signal
Fuel rail pressure sensor Fuel rail pressure
SEF648S

TROUBLE DIAGNOSIS
EC-1017
[YD (WITH EURO-OBD)]
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1 - 5: The numbers refer to the order of inspection.
(continued on next page)
ENGINE CONTROL
Crankshaft position sensor circuit 1 1 1 1 1 1 1 1 1 1EC-1157
Camshaft position sensor circuit 3 3EC-1169
Turbocharger boost sensor circuit 1 1 1EC-1151
Turbocharger boost control solenoid
valve circuit111EC-1061
Start signal circuit 1 1 1 1 1 1 1 1 1EC-1345
Ignition switch circuit 1 1 1 1EC-1046
Power supply for ECM circuit 1 1 1 1EC-1046
Cooling fan relay circuitEC-1124
EGR volume control valve circuit 1 1 1EC-1193
Glow relay circuit 1 1 1 1EC-1182
ECM relay (Self-shutoff) circuit 1 1 1 1EC-1245
ECM, connector circuit 2222222222222EC-1227,
EC-1303
NATS (Nissan Anti-theft System) 1EC-1001
SYSTEM — Basic engine control systemSYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT KNOCK/DETONATION
LACK OF POWER POOR ACCELERATION HI IDLE LOW IDLE
NO START (with first firing) NO START (without first firing) HARD TO START WHEN ENGINE IS COLD HARD TO START WHEN ENGINE IS HOT
AT I D L E DURING DRIVING WHEN DECELERATING
Warranty symptom code AA AB AC AD AE AF

TROUBLE DIAGNOSIS
EC-1019
[YD (WITH EURO-OBD)]
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1 - 5: The numbers refer to the order of inspection.
ENGINE CONTROLCrankshaft position sensor circuit 1 1 1 1EC-1157
Camshaft position sensor circuit11EC-1169
Turbocharger boost sensor circuit 1 1EC-1151
Turbocharger boost control solenoid valve cir-
cuit11EC-1061
Start signal circuitEC-1345
Ignition switch circuitEC-1046
Power supply for ECM circuit11EC-1046
Cooling fan relay circuit 2EC-1124
EGR volume control valve circuit 1EC-1193
Glow relay circuit1EC-1182
ECM relay (Self-shutoff) circuit1EC-1245
ECM, connector circuit 2 2 2 2 2 2 2 2 2 2 2EC-1227,EC-
1303
NATS (Nissan Anti-theft System)1EC-1001
SYSTEM — Basic engine control systemSYMPTOM
Reference page
ROUGH IDLE/HUNTING IDLING VIBRATION
SLOW/NO RETURN TO IDLE OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION ABNORMAL SMOKE COLOR DEAD BATTERY (UNDER CHARGE) Malfunction indicator illuminates. Can be detected by CONSULT-II?
BLACK SMOKE WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA

EC-1030
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

36 LG Cooling fan relay (Low)[Engine is running]

Cooling fan is not operating

Cooling fan is operating at high speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Cooling fan is operating at low speedApproximately 0.1V
37 W/R Glow relay Refer to EC-1305, "
GLOW CONTROL SYSTEM" .
39 B/OR Fuel transport pump relay[Engine is running]

Some fuel is in the fuel tankApproximately 0V
[Engine is running]

No fuel is in the fuel tankBATTERY VOLTAGE
(11 - 14V)
40
41
42
43G/R
GY/L
G/R
GY/LFuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1[Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 9V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0 - 9V
44 L/WCrankshaft position sen-
sor power supply[Ignition switch ON]Approximately 5.3V
45 G/ORCamshaft position sensor
power supply[Ignition switch ON]Approximately 5.3V
46 L Crankshaft position sensor[Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 6V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0 - 6V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0881E
MBIB0882E
MBIB0879E
MBIB0880E