2001 NISSAN ALMERA N16 Electronic Repair Manual

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Page 849 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Major Sensor Reference Graph in Data Monitor
Mode
=NJEC0635The following are the major sensor reference graphs in ªDATA MONITORº mode.
ACCEL POS SEN, ªCKPS´RPM (TDC)º, ªMAS AIR/FL SEºNJEC0635S0

Page 850 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEF289H
ECM Terminals and Reference ValueNJEC0636PREPARATIONNJEC0636S01ECM is locating beside of blower unit.
1. Remove the ECM bracket fixing.
2. Remove ECM harness protector.
3. Disconnect negative

Page 851 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA (DC Voltage and Pulse
Signal)
204 L Air conditioner relay[Engine is running]
+Air conditioner switch is ªOFFºBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA (DC Voltage and Pulse
Signal)
204 L Air conditioner relay[Engine is running]
+Air conditioner switch is ªOFFºBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Both air conditioner switch and blower fan
switch are ªONº
(Compressor is operating)Approximately 0.1V
214 W/B Glow relay Refer to ªGlow Control Systemº, EC-677.
218 B Sensors' ground[Engine is running]
+Warm-up condition
+Idle speedApproximately 0V
219 LG/R Cooling fan relay (Low)[Engine is running]
+Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Cooling fan is operatingApproximately 0.1V
221 LG/B Cooling fan relay (High)[Engine is running]
+Cooling fan is not operating
+Cooling fan is operating at low speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Cooling fan is operating at high speedApproximately 0.1V
223 WMass air flow sensor
power supply[Ignition switch ªONº]Approximately 5V
224 R Mass air flow sensor[Engine is running]
+Warm-up condition
+Idle speed1.5 - 2.0V
313 L/WElectronic control fuel
injection pump[Engine is running]
+Warm-up condition
+Idle speedApproximately 0.1V
314 L/RElectronic control fuel
injection pump[Engine is running]
+Warm-up condition
+Idle speedApproximately 0.4V
316 PUElectronic control fuel
injection pump[Engine is running]
+Warm-up condition
+Idle speedApproximately 2.5V
317 PElectronic control fuel
injection pump[Engine is running]
+Warm-up condition
+Idle speedApproximately 2.5V
325 G ECM relay (Self-shutoff)[Ignition switch ªONº]
[Ignition switch ªOFFº]
+For a few seconds after turning ignition switch
ªOFFºApproximately 0.25V
[Ignition switch ªOFFº]
+A few seconds passed after turning ignition
switch ªOFFºBATTERY VOLTAGE
(11 - 14V)
331 ORCrankshaft position sen-
sor (TDC) ground[Engine is running]
+Warm-up condition
+Idle speedApproximately 0V
334 B/REngine coolant tempera-
ture sensor ground[Ignition switch ªONº]Approximately 0V
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONYD
ECM Terminals and Reference Value (Cont'd)
EC-555

Page 852 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA (DC Voltage and Pulse
Signal)
337
338
350
351W/L
PU/W
GY
OR/BEGR volume control
valve[Engine is running]
+Warm-up condition
+Idle speed0.1 - 14V
(Voltage sig

Page 853 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA (DC Voltage and Pulse
Signal)
417 PU/R Vehicle speed sensor[Engine is running]
+Lift up the vehicle
+In 1st gear position
+Vehicle speed is 10 km/h (6 MPH)0

Page 854 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA (DC Voltage and Pulse
Signal)
439 L/OR Tachometer[Engine is running]
+Warm-up condition
+Idle speedApproximately 4.8V
SEF325Y
[Engine is running]
+Warm-up co

Page 855 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual DescriptionNJEC0637Intermittent 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

Page 856 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Main Power Supply and Ground Circuit
ECM TERMINALS AND REFERENCE VALUENJEC0639Remarks: Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use EC

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