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![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-499
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*1: These items are not applied for M/T models.
*2: Accelerator pedal position sensor 2 signal and throttle positio NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-499
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*1: These items are not applied for M/T models.
*2: Accelerator pedal position sensor 2 signal and throttle positio](/manual-img/5/57405/w960_57405-848.png)
TROUBLE DIAGNOSIS
EC-499
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*1: These items are not applied for M/T models.
*2: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ
from ECM terminals voltage signal.
Major Sensor Reference Graph in Data Monitor ModeEBS00NEK
The following are the major sensor reference graphs in “DATA MONITOR” mode.
CLSD THL POS, ACCEL SEN 1, THRTL SEN 1
Below is the data for “CLSD THL POS”, “ACCEL SEN 1” and “THRTL SEN 1” when depressing the accelera-
tor pedal with the ignition switch “ON” and with selector lever in “D” position (A/T models) or with shift lever in
“1st” position (M/T models).
The signal of “ACCEL SEN 1” and “THRTL SEN 1” should rise gradually without any intermittent drop or rise
after “CLSD THL POS” is changed from “ON” to “OFF”.
ENG SPEED, MAS A/F SE-B1, THRTL SEN 1, HO2S2 (B1), HO2S1 (B1), INJ PULSE-B1
Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL SEN 1”, “HO2S2 (B1)”, “HO2S1 (B1)” and
“INJ PULSE-B1” when revving engine quickly up to 4,800 rpm under no load after warming up engine suffi-
ciently.
AC PRESS SEN
●Ignition switch: ON (Engine stopped) Approx. 0V
●Engine: Idle
●Air conditioner switch: OFF1.0 - 4.0V
CAN COMM*
1
●Ignition switch: ONOK
CAN CIRC 1*
1OK
CAN CIRC 2*
1OK
CAN CIRC 3*
1UNKWN
CAN CIRC 4*
1UNKWN
CAN CIRC 5*
1UNKWN MONITOR ITEM CONDITION SPECIFICATION
PBIB0198E
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EC-500
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TROUBLE DIAGNOSIS
Each value is for reference, the exact value may vary.
SEF241Y
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TROUBLE DIAGNOSIS
EC-501
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PBIB0668E
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![NISSAN X-TRAIL 2001 Service Repair Manual EC-502
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
PFP:00031
DescriptionEBS00NEL
The specification (SP) value indicates the tolerance of th NISSAN X-TRAIL 2001 Service Repair Manual EC-502
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
PFP:00031
DescriptionEBS00NEL
The specification (SP) value indicates the tolerance of th](/manual-img/5/57405/w960_57405-851.png)
EC-502
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
PFP:00031
DescriptionEBS00NEL
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 ConditionEBS00NEM
●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 ProcedureEBS00NEN
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. Perform EC-465, "
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-503, "
Diagnostic Procedure" .
SEF601Z
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-503
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Diagnostic ProcedureEBS00NEO
SEF613ZD
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EC-504
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
SEF768Z
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-505
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![NISSAN X-TRAIL 2001 Service Repair Manual EC-506
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TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
PFP:00006
DescriptionEBS00NEP
Intermittent incidents (I/I) may occur. In m NISSAN X-TRAIL 2001 Service Repair Manual EC-506
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TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
PFP:00006
DescriptionEBS00NEP
Intermittent incidents (I/I) may occur. In m](/manual-img/5/57405/w960_57405-855.png)
EC-506
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TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
PFP:00006
DescriptionEBS00NEP
Intermittent incidents (I/I) may occur. In many cases, the incident resolves itself (the part or circuit function
returns to normal without intervention). It is important to realize that the symptoms described in the customer's
complaint often do not recur on (1st trip) DTC visits. Realize also that the most frequent cause of I/I occur-
rences is poor electrical connections. Because of this, the conditions under which the incident occurred may
not be clear. Therefore, circuit checks made as part of the standard diagnostic procedure may not indicate the
specific malfunctioning area.
Common I/I Report Situations
Diagnostic ProcedureEBS00NEQ
1. INSPECTION START
Erase (1st trip) DTCs. Refer to EC-455, "
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMA-
TION" .
>> GO TO 2.
2. CHECK GROUND TERMINALS
Check ground terminals for corroding or loose connection.
Refer to GI-23, "
How to Perform Efficient Diagnosis for an Electrical Incident" , “CIRCUIT INSPECTION”,
“Ground Inspection”.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. SEARCH FOR ELECTRICAL INCIDENT
Perform GI-23, "
How to Perform Efficient Diagnosis for an Electrical Incident" , “INCIDENT SIMULATION
TESTS”.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace.
STEP in Work Flow Situation
II The CONSULT-II is used. The SELF-DIAG RESULTS screen shows time data other than “0” or “[1t]”.
III The symptom described by the customer does not recur.
IV (1st trip) DTC does not appear during the DTC Confirmation Procedure.
VI The Diagnostic Procedure for PXXXX does not indicate the malfunctioning area.