2001 NISSAN PICK-UP Repair Manual

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3 W Tachometer[Engine is running]
+Warm-up condition
+Idle speed0-1V
SEF190T
[Engine is running]
+Engine speed is 2,000 rpm0.5-2V
SEF191T
4 L/BECM relay (Self shut-
off)[Engine is running]
[Ignition switch OFF]
+For a few seconds after turning ignition switch
OFF0-1V
[Ignition switch OFF]
+More than a few seconds after turning ignition
switch OFFBATTERY VOLTAGE
(11 - 14V)
5 W/PUEVAP canister purge
volume control sole-
noid valve[Engine is running]
+Idle speedBATTERY VOLTAGE
(11 - 14V)
SEF109V
[Engine is running]
+Engine speed is 2,000 rpm (More than 200
seconds after starting engine)12 - 13V
SEF110V
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3112

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
9 BR/WAmbient air tempera-
ture switch[Engine is running]
+Idle speed
+Ambient air temperature is above 23ÉC (73ÉF)
+Air conditioner is operating0V
[Engine is running]
+Idle speed
+Ambient air temperature is above 23ÉC (73ÉF)
+Air conditioner is operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Idle speed
+Ambient air temperature is above 23ÉC (73ÉF)
+Air conditioner is not operatingApproximately 5V
10 B/P ECM ground[Engine is running]
+Idle speedEngine ground
11*1 Y Fuel pump relay[Ignition switch ON]
+For 5 seconds after turning ignition switch ON
[Engine is running]0-1V
[Ignition switch ON]
+More than 5 seconds after turning ignition
switch ONBATTERY VOLTAGE
(11 - 14V)
12 G/W Air conditioner relay[Engine is running]
+Both A/C switch and blower switch are ON*
*: Any mode except ªOFFº, ambient air tem-
perature above 10ÉC (50ÉF).Approximately 0V
[Engine is running]
+A/C switch is OFFBATTERY VOLTAGE
(11 - 14V)
14*2 Y Fuel pump relay[Ignition switch ON]
+For 5 seconds after turning ignition switch0-1V
[Ignition switch ON]
+More than 5 seconds after turning ignition
switch ONBATTERY VOLTAGE
(11 - 14V)
18 OR/B Malfunction indicator[Ignition switch ON]0-1V
[Engine is running]
+Idle speedBATTERY VOLTAGE
(11 - 14V)
19 B/P ECM ground[Engine is running]
+Idle speedEngine ground
20 R Start signal[Ignition switch ON]Approximately 0V
[Ignition switch START]BATTERY VOLTAGE
(11 - 14V)
21 YAir conditioner pres-
sure switch[Engine is running]
+Both air conditioner switch and blower switch
are ON (Compressor operates)Approximately 0V
[Engine is running]
+Air conditioner switch is OFFBATTERY VOLTAGE
(11 - 14V)
22 Y/RPark/neutral position
(PNP) switch[Ignition switch ON]
+Gear position is ªNºApproximately 0V
[Ignition switch ON]
+Except the above gear positionApproximately 5V
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3113

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
23 G Throttle position sensor[Ignition switch ON]
+Warm-up condition
+Accelerator pedal fully released0.2 - 0.8V
[Ignition switch ON]
+Accelerator pedal fully depressed3.5 - 4.5V
24 W/L Ignition switch[Ignition switch OFF]0V
[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
25 B ECM ground[Engine is running]
+Idle speedEngine ground
28 LG/BThrottle position switch
(Closed position)[Ignition switch ON]
+Warm-up condition
+Accelerator pedal releasedBATTERY VOLTAGE
(11 - 14V)
[Ignition switch ON]
+Accelerator pedal depressedApproximately 0V
29 W/L Vehicle speed sensor[Engine is running]
+Lift up the vehicle
+In 2nd gear position
+40 km/h (25 MPH)1-4V
SEF111V
32 B ECM ground[Engine is running]
+Idle speedEngine ground
39 SBPower steering oil
pressure switch[Engine is running]
+Steering wheel is fully turnedApproximately 0V
[Engine is running]
+Steering wheel is not turnedApproximately 5V
42 G/B Sensors' power supply[Ignition switch ON]Approximately 5V
43 B Sensors' ground[Engine is running]
+Idle speedApproximately 0V
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3114

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
44*1
48*1OR
ORCamshaft position sen-
sor (Reference signal)[Engine is running]
+Warm-up condition
+Idle speed0.2 - 0.5V
SEF114V
[Engine is running]
+Engine speed is 2,000 rpm0 - 0.5V
SEF200T
44*2 WCamshaft position sen-
sor (Position signal)[Engine is running]
+Warm-up condition
+Idle speedApproximately 2.5VSEF195T
[Engine is running]
+Engine speed is 2,000 rpmApproximately 1.0V
SEF196T
47 LCrankshaft position
sensor (OBD)[Engine is running]
+Warm-up condition
+Idle speedApproximately 0VSEF112V
[Engine is running]
+Engine speed is 2,000 rpmApproximately 0V
SEF113V
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3115

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