2005 NISSAN X-TRAIL engine coolant temperature sensor

EC-1016
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

Symptom Matrix ChartEBS0117B
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
Fuel pump 55555555 55 5 —
Fuel injector 3333333334433E C - 111 8
Glow control system 1 1 1 1 1EC-1305
Engine body 3 3 3 3 3 3 3 3 4 4 3EM-222
Fuel transport pump 2 2 2EC-1331
EGR system33EC-1186
Air cleaner and duct33EM-142
Fuel rail pressure relief valve 3 3 3 3 3 3 3 3 3 3 3EC-1071
ENGINE CONTROLFuel pump circuit 4 4 4 4 4 4 4 4 4 4 4EC-1231
Fuel injector circuit 1111111111111E C - 111 8
Mass air flow sensor circuit 1 1 1EC-1083
Engine coolant temperature circuit 1 1 1 1EC-1093
Vehicle speed signal circuit1LAN-4
Accelerator pedal position sensor circuit 1 1 1EC-1099
Fuel rail pressure sensor circuitE C - 111 0

EC-1018
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

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
Fuel pump 5 5 5 5 1 1 —
Fuel injector 3 3 3 4 4 4 1 1E C - 111 8
Glow control system1EC-1305
Engine body 3 3 3 3 1 3EM-222
Fuel transport pumpEC-1331
EGR system3EC-1186
Air cleaner and duct3EM-142
Fuel rail pressure relief valve 3 3 3 3 1 1EC-1071
ENGINE CONTROLFuel pump circuit 4 4 4 4 1 1EC-1270
Fuel injector circuit 1 1 1 1 1 1 1 1E C - 111 8
Mass air flow sensor circuit 1 1 1EC-1083
Engine coolant temperature circuit 1 1 1 1 1EC-1093
Vehicle speed signal circuit11LAN-4
Accelerator pedal position sensor circuit 1 1 1EC-1099
Fuel rail pressure sensor circuit11E C - 111 0

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

TROUBLE DIAGNOSIS
EC-1031
[YD (WITH EURO-OBD)]
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47 G/R Camshaft 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
48
49Y/R
RFuel rail pressure sensor[Engine is running]

Warm-up condition

Idle speed1.7 - 2.0V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm2.0 - 2.3V
50 PUFuel pump temperature
sensor[Engine is running]

Warm-up conditionApproximately 0.3 - 5.3V
Output voltage varies with fuel
pump temperature
51 L/OREngine coolant tempera-
ture sensor[Engine is running]

Warm-up conditionApproximately 0.3 - 5.3V
Output voltage varies with engine
coolant temperature
52 Y Turbocharger boost sensor[Engine is running]

Warm-up condition

Idle speed2.3 - 2.6V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm2.5 - 2.8V
54 W Mass air flow sensor[Engine is running]

Warm-up condition

Idle speed1.8 - 2.3V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm2.5 - 3.0V
55 GIntake air temperature sen-
sor[Engine is running]

Warm-up conditionApproximately 0.3 - 5.2V
Output voltage varies with intake
air temperature
59
60
61
62W/B
Y/B
G/B
R/BFuel injector adjustment
resistor No. 1
Fuel injector adjustment
resistor No. 3
Fuel injector adjustment
resistor No. 4
Fuel injector adjustment
resistor No. 2[Ignition switch ON]0.5 - 5.1V
(There are individual differences
between fuel injector adjustment
resistors.) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0877E
MBIB0878E

EC-1032
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

63 WFuel rail pressure sensor
power supply[Ignition switch ON]Approximately 5.3V
64 WTurbocharger boost sensor
power supply[Ignition switch ON]Approximately 5.3V
65 L/RCrankshaft position sen-
sor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
66 G/YCamshaft position sensor
ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
67 —Sensor ground
(Sensors shield circuit)[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
68 BFuel rail pressure sensor
ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
69 BFuel pump temperature
sensor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
70 BEngine coolant tempera-
ture sensor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
71 BTurbocharger boost sensor
ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
73 BMass air flow sensor
ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
74 RIntake air temperature sen-
sor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
78 RFuel injector adjustment
resistor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
82 BAccelerator pedal position
sensor 1 power supply[Ignition switch ON]Approximately 5.3V
83 WAccelerator pedal position
sensor 1[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully released0.5 - 1.0V
[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully depressed4.2 - 5.2V
84 RAccelerator pedal position
sensor 1 ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)

TROUBLE DIAGNOSIS
EC-1035
[YD (WITH EURO-OBD)]
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Freeze frame data
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
*: This item includes 1st/2nd trip DTCs.
INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect CONSULT-II to data link connector, which is located
under the driver side dash panel.
3. Turn ignition switch ON.
ItemDIAGNOSTIC TEST MODE
SELF-DIAG RESULTS
DATA MON-
ITORACTIVE
TEST
DTC*FREEZE
FRAME
DATA
ENGINE CONTROL COMPONENT PARTS
INPUTCrankshaft position sensor×××
Camshaft position sensor×
Engine coolant temperature sensor××××
Vehicle speed sensor×××
Fuel pump temperature sensor××
Accelerator pedal position sensor 1××
Accelerator pedal position sensor 2××
Fuel rail pressure sensor××
Mass air flow sensor×××
Intake air temperature sensor××
Turbocharger boost sensor×××
Battery voltage××
Park/neutral position (PNP) switch×
Power steering pressure switch×
Stop lamp switch×
Barometric pressure sensor (built-into ECM)××
Fuel injector adjustment resistor×
ASCD steering switch××
ASCD brake switch××
ASCD clutch switch××
OUTPUTFuel pump×××
Fuel injector×××
Glow relay×××
Cooling fan relay×××
EGR volume control valve×××
PBIB0376E

TROUBLE DIAGNOSIS
EC-1037
[YD (WITH EURO-OBD)]
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DATA MONITOR MODE
MONITOR ITEMECM
INPUT
SIGNALMAIN
SIG-
NALSCONDITION SPECIFICATION
CKPS·RPM (TDC) [rpm]××

The engine speed computed from the
crankshaft position sensor signal is dis-
played.
COOLAN TEMP/S
[°C] or [°F]××

The engine coolant temperature (deter-
mined by the signal voltage of the engine
coolant temperature sensor) is dis-
played.When the engine coolant temper-
ature circuit is open or short, ECM
enters fail-safe mode. The engine
coolant temperature determined
by the ECM is displayed.
VHCL SPEED SE
[km/h] or [mph]××

The vehicle speed computed form the
vehicle speed sensor signal is displayed.
FUEL TEMP SEN
[°C] or [°F]××

The fuel temperature (determined by the
signal voltage of the fuel pump tempera-
ture sensor) is displayed.
ACCEL POS SEN [V]××

The accelerator pedal position sensor 1
signal voltage is displayed.
ACCEL SEN 2 [V]××

The accelerator pedal position sensor 2
signal voltage is displayed.
ACT CR PRESS [MPa]××

The Fuel rail pressure (determined by
the signal voltage of the fuel rail pressure
sensor) is displayed.
BATTERY VOLT [V]××

The power supply voltage of ECM is dis-
played.
P/N POSI SW [ON/OFF]××

Indicates [ON/OFF] condition from the
park/neutral position switch signal.
START SIGNAL [ON/OFF]××

indicates [ON/OFF] condition from the
starter signal.
PW/ST SIGNAL [ON/OFF]×

indicates [ON/OFF] condition from the
power steering pressure switch signal.
BRAKE SW [ON/OFF]××

indicates [ON/OFF] condition from the
stop lamp switch signal.
BRAKE SW2 [ON/OFF]××

indicates [ON/OFF] condition from the
ASCD brake switch and ASCD clutch
switch signal.
IGN SW [ON/OFF]××

Indicates [ON/OFF] condition from igni-
tion switch signal.
MAS AIR/FL SE [V]××

The signal voltage of the mass air flow
sensor is displayed.
MAIN INJ WID [msec]×

Indicates the actual fuel injection pulse
width compensated by ECM according to
the input signals.
PUMP CURRENT [mA]×

Indicates the fuel pump power supply
current from the ECM.
GLOW RLY [ON/OFF]×

The glow relay control condition (deter-
mined by ECM according to the input sig-
nal) is displayed.
COOLING FAN
[LOW/HI/OFF]×

Indicates the control condition of the
cooling fans (determined by ECM
according to the input signal).
LOW ... Operates at low speed.
HI ... Operates at high speed.
OFF ... Stopped

DTC P0117, P0118 ECT SENSOR
EC-1093
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DTC P0117, P0118 ECT SENSORPFP:22630
DescriptionEBS0118P
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.

*: These data are reference values and measured between ECM terminal 51 (Engine
coolant temperature sensor) 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.
On Board Diagnosis LogicEBS0118Q
DTC Confirmation ProcedureEBS0118R
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1096, "
Diagnostic Proce-
dure" .
SEF594K
Engine coolant tempera-
ture °C (°F)Voltage* (V) Resistance (kΩ)
−10 (14) 4.7 7.0 - 11.4
20 (68) 3.8 2.1 - 2.9
50 (122) 2.6 0.68 - 1.00
90 (194) 1.3 0.236 - 0.260
SEF012P
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0117
0117Engine coolant tempera-
ture sensor circuit low
inputAn excessively low voltage from the sensor is
sent to ECM.

Harness or connectors
(The sensor circuit is open or
shorted.)

Engine coolant temperature sensor P0118
0118Engine coolant tempera-
ture sensor circuit high
inputAn excessively high voltage from the sensor is
sent to ECM.
SEF817Y