2001 NISSAN PICK-UP engine

ECM HARNESS CONNECTOR TERMINAL LAYOUTNEEC0044S02
SEF533P
ECM INSPECTION TABLENEEC0044S03Specification 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 damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
1 W/PU Ignition signal[Engine is running]
+Warm-up condition
+Idle speed0 - 0.5V
SEF186T
[Engine is running]
+Engine speed is 2,000 rpm0.2 - 1.0V
SEF187T
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3111

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