2003 NISSAN X-TRAIL engine

EC-912
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

1 - 5: The numbers refer to the order of inspection.
ENGINE CONTROLCrankshaft position sensor circuit 1 1 1 1EC-1044
Camshaft position sensor circuit11EC-1056
Turbocharger boost sensor circuit 1 1EC-1038
Turbocharger boost control solenoid valve cir-
cuit11EC-949
Start signal circuitEC-1199
Ignition switch circuitEC-937
Power supply for ECM circuit11EC-937
Cooling fan relay circuit 2EC-1011
EGR volume control valve circuit 1EC-1080
Glow relay circuit1EC-1069
ECM relay (Self-shutoff) circuit1E C - 111 0
ECM, connector circuit22222222222EC-1089,EC-
1167
NATS (Nissan Anti-theft System)1EC-896
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-913
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Engine Control Component Parts LocationEBS0117C
PBIB1888E

TROUBLE DIAGNOSIS
EC-919
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

ECM Harness Connector Terminal LayoutEBS0117E
ECM Terminals And Reference ValueEBS0117F
PREPARATION
1. ECM is located behind the glove box. For this inspection,
remove glove box.
2. Remove ECM harness protector.
3. When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown in the figure.
4. Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.

Use extreme care not to touch 2 pins at one time.

Data is for comparison and may not be exact.
ECM INSPECTION TABLE
Remarks: Specification 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.
MBIB0045E
PBIB1899E
PBIB1512E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
1
2
3B
B
BECM ground[Engine is running]

Idle speedApproximately 0V

EC-920
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

4
5W/B
G/BFuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)[Engine is running]

Warm-up condition

Idle speed5 - 10V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm5 - 10V
6LTurbocharger boost control
solenoid valve[Ignition switch ON]

Warm-up condition

Idle speed0 - 12.5V
[Ignition switch ON]

Warm-up condition

Engine speed is 2,000 rpm0 - 12.5V
10 Y/L Fuel pump power supply[Engine is running]

Warm-up condition

Idle speed0 - 12.5V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0 - 12.5V
14 W/PU Fuel level switch[Ignition switch ON]

Some fuel is in the fuel tankApproximately 0V
[Ignition switch ON]

No fuel is in the fuel tankBATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0883E
MBIB0884E
MBIB0889E
MBIB0890E
MBIB0885E
MBIB0886E

TROUBLE DIAGNOSIS
EC-921
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

19 L Air conditioner relay[Engine is running]

Air conditioner switch is OFFBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Both air conditioner switch and blower fan
switch are ON (Compressor is operating)Approximately 0.1V
21
22
23
24G/R
GY/L
G/R
GY/LFuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3[Engine is running]

Warm-up condition

Idle speed0 - 9V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0 - 9V
25
26
27
28GY
W/L
OR/B
GY/BEGR volume control valve[Engine is running]

Warm-up condition

Idle speed0.1 - 14V
(Voltage signals of each ECM ter-
minals differ according to the con-
trol position of EGR volume
control valve.)
29 L Fuel pump[Engine is running]

Warm-up condition

Idle speed0.5 - 1.0V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0.5 - 1.0V
34 LG/B Cooling fan relay (High)[Engine is running]

Cooling fan is not operating

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

Cooling fan is operating at high speedApproximately 0.1V
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 TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0881E
MBIB0882E
MBIB0887E
MBIB0888E

EC-922
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

37 W/R Glow relay Refer to EC-1169, "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 speed0 - 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 speed0 - 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

TROUBLE DIAGNOSIS
EC-923
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

47 G/R Camshaft position sensor[Engine is running]

Warm-up condition

Idle speed0 - 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-924
[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[Ignition switch ON]Approximately 0.3V
66 G/YCamshaft position sensor
ground[Ignition switch ON]Approximately 0.3V
67 —Sensor ground
(Sensors shield circuit)[Ignition switch ON]Approximately 0.3V
68 BFuel rail pressure sensor
ground[Ignition switch ON]Approximately 0.3V
69 BFuel pump temperature
sensor ground[Ignition switch ON]Approximately 0.3V
70 BEngine coolant tempera-
ture sensor ground[Ignition switch ON]Approximately 0.3V
71 BTurbocharger boost sensor
ground[Ignition switch ON]Approximately 0.3V
73 BMass air flow sensor
ground[Ignition switch ON]Approximately 0.3V
74 RIntake air temperature sen-
sor ground[Ignition switch ON]Approximately 0.3V
78 RFuel injector adjustment
resistor ground[Ignition switch ON]Approximately 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[Ignition switch ON]Approximately 0.3V
85 —Sensor ground
(Accelerator pedal posi-
tion sensor shield circuit)[Ignition switch ON]Approximately 0.3V
87 GY/R CAN communication line[Ignition switch ON]Approximately 2.0 - 2.6V
Output voltage varies with the
communication status.
89 LG Data link connector[Ignition switch ON]

CONSULT-II is disconnected.Approximately 0V - Battery volt-
age (11 - 14V)
90 LAccelerator pedal position
sensor 2 power supply[Ignition switch ON]Approximately 5.3V
91 GAccelerator pedal position
sensor 2[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully released0.4 - 0.7V
[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully depressed2.2 - 2.7V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)