2001 NISSAN X-TRAIL steering wheel

EC-1174
[QR20(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-1142
.
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
ItemDIAGNOSTIC TEST MODE
WORK
SUPPORTSELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TORDATA
MONI-
TOR
(SPEC)ACTIVE
TEST
DTC*1FREEZE
FRAME
DATA*2
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)××××
Camshaft position sensor (PHASE)×
Mass air flow sensor×××
Engine coolant temperature sensor×××××
Heated oxygen sensor 1×××
Heated oxygen sensor 2××
Wheel sensor (Vehicle speed signal)××××
Accelerator pedal position sensor×××
Throttle position sensor×××
Intake air temperature sensor××
Knock sensor×
Refrigerant pressure sensor××
Ignition switch (start signal)××
Closed throttle position switch (accelera-
tor pedal position sensor signal)××
Air conditioner switch××
Park/neutral position (PNP) switch××
Stop lamp switch×××
Power steering pressure sensor×××
Battery voltage××
Load signal××
ENGINE CONTROL COMPONENT PARTS
OUTPUT
Injectors×× ×
Power transistor (Ignition timing)×× ×
Throttle control motor relay×××
EVAP canister purge volume control sole-
noid valve×× ×
Air conditioner relay××
Fuel pump relay××××
Cooling fan relay××××
Heated oxygen sensor 1 heater××
Heated oxygen sensor 2 heater××
Intake valve timing control solenoid valve×× ×
Calculated load value×××

TROUBLE DIAGNOSIS
EC-1183
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B/FUEL SCHDL
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 2.5 - 3.5 msec
2,000 rpm 2.5 - 3.5 msec
A/F ALPHA-B1
●Engine: After warming upMaintaining engine speed at 2,000
rpm54% - 155%
COOLAN TEMP/S
●Engine: After warming up More than 70°C (158°F)
HO2S1 (B1)
●Engine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S2 (B1)
●Engine: After warming upRevving engine from idle up to 3,000
rpm quickly0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
●Engine: After warming upMaintaining engine speed at 2,000
rpmLEAN←→ RICH
Changes more than 5 times dur-
ing 10 seconds.
HO2S2 MNTR (B1)
●Engine: After warming upRevving engine from idle up to 3,000
rpm quicklyLEAN←→ RICH
VEH SPEED SE
●Turn drive wheels and compare CONSULT-II value with the speedometer
indication.Almost the same speed as the
speedometer indication
BATTERY VOLT
●Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN1
●Ignition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.41 - 0.71V
Accelerator pedal: Fully depressed More than 3.9V
ACCEL SEN2*
2●Ignition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.15 - 0.97V
Accelerator pedal: Fully depressed More than 3.8V
THRTL SEN1
THRTL SEN2*
2
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released More than 0.36V
●Shift lever:
D (A/T model)
1st (M/T model)Accelerator pedal: Fully depressed Less than 4.75V
START SIGNAL
●Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS
●Ignition switch: ONAccelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
●Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW
●Ignition switch: ONShift lever:
P or N (A/T model)
Neutral (M/T model)ON
Shift lever: Except above OFF
PW/ST SIGNAL
●Engine: After warming up, idle
the engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON
LOAD SIGNAL
●Ignition switch: ONRear window defogger switch is ON
and/or lighting switch is in 2nd.ON
Rear window defogger switch is OFF
and lighting switch is OFF.OFF
IGNITION SW
●Ignition switch: ON → OFF → ON ON → OFF → ON
HEATER FAN SW
●Engine: After warming up, idle
the engineHeater fan is operating. ON
Heater fan is not operating OFF
BRAKE SW
●Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON MONITOR ITEM CONDITION SPECIFICATION

EC-1188
[QR20(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
PFP:00031
DescriptionEBS00N48
The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI-
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MI.
The SP value will be displayed for the following three items:
●B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board cor-
rection)
●A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
●MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionEBS00N49
●Vehicle driven distance: More than 5,000 km (3,017 miles)
●Barometric pressure: 98.3 - 104.3 kPa (0.983 - 1.043 bar, 1.003 - 1.064 kg/cm2 , 14.25 - 15.12 psi)
●Atmospheric temperature: 20 - 30°C (68 - 86°F)
●Engine coolant temperature: 75 - 95°C (167 - 203°F)
●Transmission: Warmed-up*1
●Electrical load: Not applied*2
●Engine speed: Idle
*1: For A/T models, after the engine is warmed up to normal operating temperature, drive vehicle until “FLUID
TEMP SE” (A/T fluid temperature sensor signal) indicates more than 60°C (140°F).
For M/T models, after the engine is warmed up to normal operating temperature, drive vehicle for 5 minutes.
*2: Rear window defogger switch, air conditioner switch, lighting switch are “OFF”. Steering wheel is straight
ahead.
Inspection ProcedureEBS00N4A
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. Perform EC-1152, "
Basic Inspection" .
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-
B1” in “DATA MONITOR (SPEC)” mode with CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to EC-1189, "
Diagnostic Procedure" .
SEF601Z

DTC P0550 PSP SENSOR
EC-1257
[QR20(WITHOUT EURO-OBD)]
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DTC P0550 PSP SENSORPFP:49763
Component DescriptionEBS00N6Q
Power steering pressure (PSP) sensor is installed to the power
steering high-pressure tube and detects a power steering load. This
sensor is a potentiometer which transforms the power steering load
into output voltage, and emits the voltage signal to the ECM. The
ECM controls the electric throttle control actuator and adjusts the
throttle valve opening angle to increase the engine speed and
adjusts the idle speed for the increased load.
CONSULT-II Reference Value in Data Monitor ModeEBS00N6R
Specification data are reference values.
ECM Terminals and Reference ValueEBS00N6S
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.
On Board Diagnosis LogicEBS00N6T
The MI will not light up for this diagnosis.
DTC Confirmation ProcedureEBS00N6U
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.
PBIB0502E
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL
●Engine: After warming up, idle
the engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
58 B Sensors' ground[Engine is running]
●Warm-up condition
●Idle speedApproximately 0V
65 R Sensor's power supply[Ignition switch “ON”]Approximately 5V
67 PPower steering pres-
sure sensor[Engine is running]
●Steering wheel is being turned.0.5 - 4.0V
[Engine is running]
●Steering wheel is not being turned.0.4 - 0.8V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0550
0550Power steering pres-
sure sensor circuitAn excessively low or high voltage from the
sensor is sent to ECM.
●Harness or connectors
(The sensor circuit is open or shorted)
●Power steering pressure sensor

DTC P0550 PSP SENSOR
EC-1261
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4.CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 67 and PSP sensor terminal 2.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK PSP SENSOR
Refer to EC-1261, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace PSP sensor.
6.CHECK INTERMITTENT INCIDENT
Refer to EC-1192, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00N6X
POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 67 and ground under the
following conditions.Continuity should exist.
Condition Voltage
Steering wheel is being turned fully. Approximately 3.6V
Steering wheel is not being turned. Approximately 0.6V
PBIB0570E

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-1391
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureEBS00NB0
Idle Speed and Ignition TimingEBS00NB1
*1: Under the following conditions:
●Air conditioner switch: OFF
●Electric load: OFF (Lights, heater fan & rear window defogger)
●Steering wheel: Kept in straight-ahead position
*2: It refrigerant pressure is low, the idle speed may not be increased.
Calculated Load ValueEBS00NB2
Mass Air Flow SensorEBS00NB3
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorEBS00NB4
Engine Coolant Temperature SensorEBS00NB5
Heated Oxygen Sensor 1 HeaterEBS00NB6
Heated Oxygen sensor 2 HeaterEBS00NB7
Crankshaft Position Sensor (POS)EBS00NB8
Refer to EC-1245, "Component Inspection" .
Camshaft Position Sensor (PHASE)EBS00NB9
Refer to EC-1251, "Component Inspection" .
Fuel pressure at idle kPa (bar, kg/cm2 , psi)Approximately 350 (3.5, 3.57, 51)
Target idle speed
No-load*1 (in “P” or N” position)A/T: 700±50 rpm
M/T: 650±50 rpm
Air conditioner: ONIn “P” or N” position
725 rpm or more*
2
Ignition timingIn “P” or N” position AT: 16°±5° BTDC
MT: 14°±5° BTDC
Calculated load value % (Using CONSULT-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle1.1 - 1.5*V
Mass air flow (Using CONSULT-II or GST)1.4 - 4.0 g·m/sec at idle*
4.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.9 - 2.1
80 (176)0.31 - 0.37
Temperature °C (°F) Resistance kΩ
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω

ENGINE CONTROL SYSTEM
EC-1403
[YD]
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EC
FOR M/T MODELS WITH ESP
System diagram
Input/output signal chart
T: Transmit R: Receive
SKIA0885E
Signals ECMSteering wheel
angle sensor4WD control unitESP/ TCS / ABS
control unit
Engine speed signal T R R
Accelerator pedal position signal T R
ESP operation signal R R T
TCS operation signal R R T
ABS operation signal R R T
Stop lamp switch signalRT
Steering wheel angle sensor signal T R
ESP-OFF switch signalRT
Wheel speed sensor signalRT
4WD mode signalTR

EC-1412
[YD]
TROUBLE DIAGNOSIS
Worksheet Sample
Basic InspectionEBS0037E
Precaution:
Perform Basic Inspection without electrical or mechanical loads applied;
●Headlamp switch is OFF.
●On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
●Air conditioner switch is OFF.
●Rear defogger switch is OFF.
●Steering wheel is in the straight-ahead position, etc.
MTBL0533