NISSAN PICK-UP 2001 Repair Manual

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
49*1 WCamshaft position sen-
sor (Position signal)[Engine is running]
+Warm-up condition
+Idle speedApproximately 2.5V
SEF195T
[Engine is running]
+Engine speed is 2,000 rpmApproximately 1.0V
SEF196T
49*2
53*2OR
ORCamshaft position sen-
sor (Reference signal)[Engine is running]
+Warm-up condition
+Idle speed0.2 - 0.5VSEF114V
[Engine is running]
+Engine speed is 2,000 rpm0 - 0.5V
SEF200T
50 WHeated oxygen sensor
1[Engine is running]
+After warning up to normal operating tempera-
ture and engine speed is 2,000 rpm.0 - Approximately 1.0V
SEF201T
54 L Mass air flow sensor[Engine is running]
+Warm-up condition
+Idle speed0.9 - 1.8V
[Engine is running]
+Warm-up condition
+Engine speed is 2,500 rpm1.9 - 2.3V
55 PMass air flow sensor
ground[Engine is running]
+Warm-up condition
+Idle speedApproximately 0V
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3116

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
56 L/WHeated oxygen sensor
2[Engine is running]
+After warming up to normal operating tempera-
ture and revving engine from idle to 3,000 rpm
quickly0 - Approximately 1.0V
59 LG/REngine coolant tem-
perature sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature
61 P/BIntake air temperature
sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
intake air temperature
64 W Knock sensor[Engine is running]
+Idle speedApproximately 2.4V
67 W
Power supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
72 W
69 LG/R Data link connector[Ignition switch ON]
+CONSULT-II or GST is disconnected.Approximately 2V
80 GY/LPower supply (Back-
up)[Ignition switch OFF]BATTERY VOLTAGE
(11 - 14V)
101 G/Y IACV-AAC valve[Engine is running]
+Warm-up condition
+Idle speed10.5 - 11.5V
SEF645U
[Engine is running]
+Warm-up condition
+Engine speed is 2,000 rpm1 - 13V
SEF646U
102 W/L Injector No. 1
[Engine is running]
+Warm-up condition
+Idle speedBATTERY VOLTAGE
(11 - 14V)
SEF204T
104 W/G Injector No. 3
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3117

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
109 W/R Injector No. 2
[Engine is running]
+Warm-up condition
+Engine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
SEF205T
111 W/B Injector No. 4
116 B/P ECM ground[Engine is running]
+Idle speedEngine ground
117 W Current return[Engine is running]
+Idle speedBATTERY VOLTAGE
(11 - 14V)
119 Y/RHeated oxygen sensor
heater 1[Engine is running]
+Engine speed is below 3,600 rpm.Approximately 0.4V
[Engine is running]
+Engine speed is above 3,600 rpm.BATTERY VOLTAGE
(11 - 14V)
122 G/BHeated oxygen sensor
heater 2[Engine is running]
+Idle speed after driving for 2 minutes at 70
km/h (43 MPH) or moreApproximately 0.4V
[Ignition switch ON]
+Engine is not runningBATTERY VOLTAGE
(11 - 14V)
124 B/P ECM ground[Engine is running]
+Idle speedEngine ground
*1: Model without NATS (Nissan Anti-Theft System)
*2: Model with NATS (Nissan Anti-Theft System)
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3118

DescriptionNEEC1003The specification (SP) value indicates the tolerance of the value that is displayed in ªDATA MONITOR (SPEC)º
mode of CONSULT-II during normal operation of the Engine Control System. When the value in ªDATA MONI-
TOR (SPEC)º mode is within the SP value, the Engine Control System is confirmed OK. When the value in
ªDATA MONITOR (SPEC)º 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/B2 (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 ConditionNEEC1004+Vehicle driven distance: More than 5,000 km (3,107 miles)
+Barometric pressure: 101.3 kPa (1,013 mbar, 760.0 mmHg, 29.92 inHg)±3 kPa (30 mbar, 22.5 mmHg, 0.89
inHg)
+Atmospheric temperature: 20 - 30ÉC (68 - 86ÉF)
+Engine coolant temperature: 75 - 95ÉC (167 - 203ÉF)
+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 ªFLUID
TEMP SEº (A/T fluid temperature sensor signal) indicates less than 0.9V. For M/T models, drive vehicle for 5
minutes after the engine is warmed up to normal operating temperature.
*2: Rear window defogger switch, air conditioner switch, lighting switch are ªOFFº. Cooling fans are not oper-
ating. Steering wheel is straight ahead.
SEF601Z
Inspection ProcedureNEEC1005NOTE:
Perform ªDATA MONITOR (SPEC)º mode in maximum scale dis-
play.
1. Perform ªBasic Inspectionº, EC-3086.
2. Confirm that the testing conditions indicated above are met.
3. Select ªB/FUEL SCHDLº, ªA/F ALPHA-B1º and ªMAS A/F
SE-B1º in ªDATA MONITOR (SPEC)º mode with CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to ªDiagnostic Procedureº, EC-3120.
TROUBLE DIAGNOSIS Ð SPECIFICATION
VALUE
KA24DE (EURO OBD)
Description
EC-3119

Diagnostic ProcedureNEEC1006
LEC091A
TROUBLE DIAGNOSIS Ð SPECIFICATION
VALUE
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3120

SEF768Z
TROUBLE DIAGNOSIS Ð SPECIFICATION
VALUE
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3121

LEC090A
TROUBLE DIAGNOSIS Ð SPECIFICATION
VALUE
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3122

DescriptionNEEC0045Intermittent incidents (I/I) may occur. In many cases, the problem resolves itself (the part or circuit function
returns to normal without intervention). It is important to realize that the symptoms described in the custom-
er's complaint often do not recur on DTC (1st trip) visits. Realize also that the most frequent cause of I/I
occurrences 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 indi-
cate the specific problem area.
COMMON I/I REPORT SITUATIONSNEEC0045S01
STEP in Work Flow Situation
IIThe CONSULT-II is used. The SELF-DIAG RESULTS screen shows time data other than ª0º or
ª1tº.
III The symptom described by the customer does not recur.
IV (1st trip) DTC data does not appear during the DTC CONFIRMATION PROCEDURE.
VI The TROUBLE DIAGNOSIS for PXXXX does not indicate the problem area.
Diagnostic ProcedureNEEC0046
1 INSPECTION START
Erase (1st trip) DTCs. Refer to ªHOW TO ERASE EMISSION-RELATED INFORMATIONº, EC-3060.
©GO TO 2.
2 CHECK GROUND TERMINALS
Check ground terminals for corroding or loose connection. Refer to ªCircuit Inspectionº, ªGROUND INSPECTIONº, GI sec-
tion.
OK or NG
OK©GO TO 3.
NG©Repair or replace.
3 SEARCH FOR ELECTRICAL INCIDENT
Perform ªIncident Simulation Testsº, GI section.
OK or NG
OK©INSPECTION END
NG©Repair or replace.
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT
KA24DE (EURO OBD)
Description
EC-3123

Main Power Supply and Ground Circuit
WIRING DIAGRAMNEEC0047
GEC233A
TROUBLE DIAGNOSIS FOR POWER
SUPPLY
KA24DE (EURO OBD)
Main Power Supply and Ground Circuit
EC-3124

GEC234A
TROUBLE DIAGNOSIS FOR POWER
SUPPLY
KA24DE (EURO OBD)
Main Power Supply and Ground Circuit
EC-3125