Electric NISSAN ALMERA 2001 Owners Manual

SEF987W
Component DescriptionNJEC0642The mass air flow sensor (MAFS) is placed in the stream of intake
air. It measures the intake air flow rate by measuring a part of the
entire intake air flow. It consists of a hot film that is supplied with
electric current from the ECM. The temperature of the hot film is
controlled by the ECM a certain amount. The heat generated by the
hot film is reduced as the intake air flows around it. The more air,
the greater the heat loss.
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot film as air flow increases. The ECM
detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0643Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
MAS AIR/FL SE+Engine: After warming up
+Air conditioner switch: ªOFFº
+Shift lever: Neutral position
+No-loadIdle 1.5 - 2.0V
ECM Terminals and Reference ValueNJEC0644Specification 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 dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
218 B Sensor's ground[Engine is running]
+Warm-up condition
+Idle speedApproximately 0V
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
On Board Diagnosis LogicNJEC0645
DTC Malfunction is detected when ... Check Items (Possible Cause)
P0100
0102+An excessively high or low voltage from the sen-
sor is sent to ECM.+Harness or connectors
(The sensor circuit is open or shorted.)
+Mass air flow sensor
SEF817Y
DTC Confirmation ProcedureNJEC0646WITH CONSULT-IINJEC0646S011) Turn ignition switch ªONº, and wait at least 6 seconds.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and wait at least 3 seconds.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-677.
WITHOUT CONSULT-IINJEC0646S021) Turn ignition switch ªONº, and wait at least 6 seconds.
2) Start engine and wait at least 3 seconds.
DTC P0100 MASS AIR FLOW SENYD
Component Description
EC-673

SEF594K
DescriptionNJEC0649The engine coolant temperature sensor is used to detect the
engine coolant temperature. The sensor modifies a voltage signal
from the ECM. The modified signal returns to the ECM as the
engine coolant temperature input. The sensor uses a thermistor
which is sensitive to the change in temperature. The electrical
resistance of the thermistor decreases as temperature increases.
SEF012P

Engine coolant tempera-
ture ÉC (ÉF)Voltage* (V) Resistance (kW)
þ10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.1 - 2.9
50 (122) 2.3 0.68 - 1.00
90 (194) 1.0 0.236 - 0.260
*: These data are reference values and measured between ECM terminal 347
(Engine coolant temperature sensor) 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.
On Board Diagnosis LogicNJEC0650
DTC Malfunction is detected when ... Check Items (Possible Cause)
P0115
0103+An excessively high or low voltage from the sen-
sor is entered to ECM.+Harness or connectors (The sensor circuit is
open or shorted.)
+Engine coolant temperature sensor
SEF817Y
DTC Confirmation ProcedureNJEC0651WITH CONSULT-IINJEC0651S011) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 5 seconds.
4) If DTC is detected, go to ªDiagnostic Procedureº, EC-683.
WITHOUT CONSULT-IINJEC0651S021) Turn ignition switch ªONº and wait at least 5 seconds.
2) Turn ignition switch ªOFFº, wait at least 5 seconds and then
turn ªONº.
DTC P0115 COOLANT TEMP SENYD
Description
EC-680

2 CHECK BATTERY AND ALTERNATOR
Check that the proper type of battery and alternator is installed.
Refer to SC-38, ªBatteryº and SC-39, ªAlternatorº.
OK or NG
OK©GO TO 5.
NG©Replace with a proper one.
3 CHECK JUMPER CABLES INSTALLATION
Check that the jumper cables are connected in the correct sequence.
SEF439Z
OK or NG
OK©GO TO 4.
NG©Reconnect jumper cables properly.
4 CHECK BATTERY FOR BOOSTER
Check that the battery for the booster is a 12V battery.
OK or NG
OK©GO TO 5.
NG©Change the vehicle for booster.
5 PERFORM DTC CONFIRMATION PROCEDURE AGAIN
Perform ªDTC Confirmation Procedureº, EC-801, again.
OK or NG
OK©GO TO 6.
NG©Replace ECM.
6 CHECK ELECTRICAL PARTS DAMAGE
Check the following for damage.
+Wiring harness and harness connectors for burn
+Fuses for short
OK or NG
OK©INSPECTION END
NG©Repair or replace malfunctioning part.
DTC P1660 BATTERY VOLTAGEYD
Diagnostic Procedure (Cont'd)
EC-802

DescriptionNJEC0764SYSTEM DESCRIPTIONNJEC0764S01
Sensor Input Signal to ECM ECM Function Actuator
Electronic controlled fuel injection pump Fuel injection signal
EGR volume con-
trolEGR volume control
valve Crankshaft position sensor (TDC) Engine speed
Vehicle speed sensor Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator position sensor Accelerator position
Mass air flow sensor Amount of intake air
Air conditioner switch Air conditioner operation
Electrical load Electrical load signal
This system controls flow rate of EGR led from exhaust manifold
to intake manifold. The opening of the EGR by-pass passage in the
EGR volume control valve changes to control the flow rate. A
built-in step motor moves the valve in steps corresponding to the
ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined
by considering various engine conditions.
The EGR volume control valve remains close under the following
conditions.
+Engine stopped
+Engine starting
+Low engine coolant temperature
+Excessively high engine coolant temperature
+High engine speed
+Wide open throttle
SEF908Y
SEF411Y
COMPONENT DESCRIPTIONNJEC0764S02EGR Volume Control ValveNJEC0764S0201The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the
ECM. Two windings are turned ON and OFF in sequence. Each
time an ON pulse is issued, the valve opens or closes, changing
the flow rate. When no change in the flow rate is needed, the ECM
does not issue the pulse signal. A certain voltage signal is issued
so that the valve remains at that particular opening.
EGR VOLUME CONTROL SYSTEMYD
Description
EC-815

ELECTRICAL SYSTEM
SECTION
EL
CONTENTS
PRECAUTIONS...............................................................5
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............5
Wiring Diagrams and Trouble Diagnosis .....................5
HARNESS CONNECTOR................................................6
Description ...................................................................6
STANDARDIZED RELAY................................................8
Description ...................................................................8
POWER SUPPLY ROUTING.........................................10
Schematic/Sedan .......................................................10
Wiring Diagram - POWER -/Sedan With
Gasoline Engine ........................................................ 11
Wiring Diagram - POWER -/Sedan With Diesel
Engine ........................................................................19
Schematic/Hatchback ................................................26
Wiring Diagram - POWER -/Hatchback ....................28
Inspection...................................................................38
GROUND........................................................................39
Ground Distribution ....................................................39
COMBINATION SWITCH..............................................56
Check/Sedan .............................................................56
Check/Hatchback .......................................................57
Replacement ..............................................................58
STEERING SWITCH......................................................59
Check .........................................................................59
HEADLAMP...................................................................60
Wiring Diagram - H/LAMP -/Hatchback.....................60
Wiring Diagram - H/LAMP -/Sedan ...........................61
Trouble Diagnoses.....................................................63
Bulb Replacement .....................................................64
Aiming Adjustment .....................................................65
HEADLAMP - DAYTIME LIGHT SYSTEM -.................67
System Description ....................................................67
Schematic/Sedan .......................................................68
Wiring Diagram - DTRL -/Sedan ...............................69
Schematic/Hatchback ................................................72
Wiring Diagram - DTRL -/Hatchback .........................73
Trouble Diagnoses.....................................................76
Bulb Replacement .....................................................76Aiming Adjustment .....................................................77
HEADLAMP - HEADLAMP AIMING CONTROL -........78
Wiring Diagram - H/AIM -/Sedan...............................78
Wiring Diagram - H/AIM -/Hatchback ........................79
PARKING, LICENSE AND TAIL LAMPS.....................81
Wiring Diagram - TAIL/L -/Sedan ..............................81
Wiring Diagram - TAIL/L -/Hatchback ........................83
STOP LAMP..................................................................85
Wiring Diagram - STOP/L -/Sedan ............................85
Wiring Diagram - STOP/L -/Hatchback .....................86
BACK-UP LAMP............................................................87
Wiring Diagram - BACK/L -/Sedan ............................87
Wiring Diagram - BACK/L -/Hatchback .....................88
FRONT FOG LAMP.......................................................89
Wiring Diagram - F/FOG -/Sedan..............................89
Wiring Diagram - F/FOG -/Hatchback .......................90
Bulb Replacement .....................................................91
Aiming Adjustment .....................................................92
REAR FOG LAMP.........................................................93
Wiring Diagram - R/FOG -/Sedan .............................93
Wiring Diagram - R/FOG -/Hatchback.......................95
TURN SIGNAL AND HAZARD WARNING LAMPS.....96
System Description/Sedan ........................................96
Schematic/Sedan .......................................................98
Wiring Diagram - TURN -/Sedan...............................99
Trouble Diagnoses/Sedan .......................................101
Electrical Components Inspection ...........................101
System Description/Hatchback ................................102
Wiring Diagram - TURN -/Hatchback ......................103
Trouble Diagnoses/Hatchback.................................107
ILLUMINATION............................................................108
Schematic/Sedan .....................................................108
Wiring Diagram - ILL -/Sedan ..................................109
Schematic/Hatchback .............................................. 111
Wiring Diagram - ILL -/Hatchback ........................... 112
INTERIOR ROOM LAMP............................................. 115
System Description/Sedan With Interior Room
Lamp Timer .............................................................. 115

Wiring Diagram - ROOM/L -/Sedan With Interior
Room Lamp Timer ................................................... 117
Trouble Diagnoses/Sedan With Interior Room
Lamp Timer .............................................................. 119
System Description/Hatchback With Interior
Room Lamp Timer ...................................................127
Wiring Diagram - ROOM/L -/Hatchback With
Interior Room Lamp Timer.......................................129
Trouble Diagnoses/Hatchback With Interior
Room Lamp Timer ...................................................131
Wiring Diagram - ROOM/L -/Sedan Without
Timer ........................................................................139
Wiring Diagram - ROOM/L -/Hatchback Without
Timer ........................................................................140
SPOT AND TRUNK ROOM LAMPS...........................141
Wiring Diagram - INT/L -/Sedan ..............................141
Wiring Diagram - INT/L -/Hatchback .......................143
METERS AND GAUGES.............................................144
Component Parts and Harness Connector
Location/Sedan ........................................................144
System Description/Sedan ......................................144
Combination Meter/Sedan With Tachometer...........146
Schematic/Sedan With Tachometer ........................147
Combination Meter/Without Tachometer .................148
Schematic/Without Tachometer ...............................149
Construction/Sedan .................................................150
Wiring Diagram - METER -/Without Tachometer ....151
Wiring Diagram - METER -/Sedan ..........................152
Meter/Gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode/Sedan.............153
Trouble Diagnoses/Sedan .......................................154
Electrical Components Inspection/Sedan ................162
Component Parts and Harness Connector
Location/Hatchback .................................................164
System Description/Hatchback ................................164
Combination Meter/Hatchback (Models before
VIN No. - N16U0135126) ........................................166
Combination Meter/Hatchback (Models after VIN
No. - N16U0135126) ...............................................167
Schematic/Hatchback (Models before VIN No. -
N160135126) ...........................................................168
Schematic/Hatchback (Models after VIN No. -
N16U0135126).........................................................169
Construction/Hatchback ...........................................170
Wiring Diagram - METER -/Hatchback ...................171
Combination Meter Self-Diagnosis/Hatchback ........173
Trouble Diagnoses/Hatchback.................................176
Electrical Components Inspection/Hatchback .........183
WARNING LAMPS......................................................184
Schematic/Sedan .....................................................184
Wiring Diagram - WARN -/Sedan ............................185
Schematic/Hatchback ..............................................189Wiring Diagram - WARN -/Hatchback .....................190
Electrical Components Inspection ...........................194
A/T INDICATOR...........................................................195
Wiring Diagram - AT/IND -/With Tachometer...........195
Wiring Diagram - AT/IND -/Without Tachometer......196
WARNING CHIME.......................................................197
Component Parts and Harness Connector
Location/Sedan ........................................................197
System Description/Sedan ......................................198
Wiring Diagram - CHIME -/Sedan ...........................199
Trouble Diagnoses/Sedan .......................................200
Component Parts and Harness Connector
Location/Hatchback .................................................205
System Description/Hatchback ................................206
Wiring Diagram - CHIME -/Hatchback ....................207
Trouble Diagnoses/Hatchback.................................209
FRONT WIPER AND WASHER..................................215
System Description/Sedan ......................................215
Wiring Diagram - WIPER -/Sedan ...........................217
System Description/Hatchback ................................218
Wiring Diagram - WIPER -/Hatchback ....................220
Removal and Installation .........................................222
Washer Nozzle Adjustment .....................................223
Washer Tube Layout ...............................................224
REAR WIPER AND WASHER....................................225
Wiring Diagram - WIP/R -/Sedan ............................225
Wiring Diagram - WIP/R -/Hatchback......................227
Removal and Installation .........................................229
Washer Nozzle Adjustment .....................................229
Washer Tube Layout ...............................................230
HEADLAMP WASHER................................................231
Wiring Diagram - HLC -/Sedan ...............................231
Wiring Diagram - HLC -/Hatchback .........................232
Washer Tube Layout ...............................................233
HORN...........................................................................234
Wiring Diagram - HORN -/Sedan ............................234
Wiring Diagram - HORN -/Hatchback .....................235
CIGARETTE LIGHTER................................................236
Wiring Diagram - CIGAR -/Sedan ...........................236
Wiring Diagram - CIGAR -/Hatchback.....................237
CLOCK.........................................................................238
Wiring Diagram - CLOCK -/Sedan ..........................238
Wiring Diagram - CLOCK -/Hatchback....................239
REAR WINDOW DEFOGGER.....................................240
System Description/Sedan ......................................240
Wiring Diagram - DEF -/Sedan ...............................242
Trouble Diagnoses/Sedan .......................................246
System Description/Hatchback ................................249
Wiring Diagram - DEF -/Hatchback .........................250
Trouble Diagnoses/Hatchback.................................252
Electrical Components Inspection ...........................255
Filament Check ........................................................256
CONTENTS(Cont'd)
EL-2

ELECTRICAL UNITS LOCATION...............................517
Engine Compartment ...............................................517
Passenger Compartment/LHD Models ....................518
Passenger Compartment/RHD Models ...................520
HARNESS LAYOUT....................................................522
How to Read Harness Layout .................................522
Outline/Sedan ..........................................................523
Outline/Hatchback....................................................525
Main Harness/Sedan ...............................................528
Main Harness/Hatchback.........................................532
Engine Room Harness/Sedan .................................536
Engine Room Harness/Hatchback ..........................542
Engine Control Harness/QG Engine Models...........546Engine Control Harness/YD Engine Models ...........550
Body Harness/Sedan ...............................................554
Body Harness/Hatchback ........................................562
Room Lamp Harness...............................................566
Front Door Harness/LHD Models ............................567
Front Door Harness/RHD Models ...........................569
Rear Door Harness..................................................571
Back Door Harness .................................................573
BULB SPECIFICATIONS............................................574
Headlamp.................................................................574
Exterior Lamp ..........................................................574
Interior Lamp............................................................574
WIRING DIAGRAM CODES (CELL CODES).............575
CONTENTS(Cont'd)
EL-4

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJEL0001The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector.
Wiring Diagrams and Trouble DiagnosisNJEL0002When you read wiring diagrams, refer to the following:
+Refer to GI-11, ªHOW TO READ WIRING DIAGRAMSº
+Refer to EL-10, ªPOWER SUPPLY ROUTINGº for power distribution circuit
When you perform trouble diagnosis, refer to the following:
+Refer to GI-32, ªHOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSESº
+Refer to GI-21, ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº
Check for any Service bulletins before servicing the vehicle.
PRECAUTIONS
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
EL-5

CEL083
InspectionNJEL0007FUSENJEL0007S01+If fuse is blown, be sure to eliminate cause of problem
before installing new fuse.
+Use fuse of specified rating. Never use fuse of more than
specified rating.
+Do not partially install fuse; always insert it into fuse
holder properly.
+Remove fuse for ªELECTRICAL PARTS (BAT)º if vehicle is
not used for a long period of time.
SEL165W
FUSIBLE LINKNJEL0007S02A melted fusible link can be detected either by visual inspection or
by feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:
+If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted.
In such a case, carefully check and eliminate cause of
problem.
+Never wrap outside of fusible link with vinyl tape. Impor-
tant: Never let fusible link touch any other wiring harness,
vinyl or rubber parts.
SBF284E
CIRCUIT BREAKERNJEL0007S03For example, when current is 30A, the circuit is broken within 8 to
20 seconds.
SEL109W
CIRCUIT BREAKER (PTC THERMISTOR TYPE)NJEL0007S04The PTC thermister generates heat in response to current flow. The
temperature (and resistance) of the thermister element varies with
current flow. Excessive current flow will cause the element's tem-
perature to rise. When the temperature reaches a specified level,
the electrical resistance will rise sharply to control the circuit cur-
rent.
Reduced current flow will cause the element to cool. Resistance
falls accordingly and normal circuit current flow is allowed to
resume.
POWER SUPPLY ROUTING
Inspection
EL-38

Trouble Diagnoses/SedanNJEL0033
Symptom Possible cause Repair order
Turn signal and hazard warning
lamps do not operate.1. Hazard switch
2. Combination flasher unit
3. Open in combination flasher unit
circuit
4. Combination flasher unit ground
circuit1. Check hazard switch.
2. Refer to combination flasher unit check.
3. Check wiring to combination flasher unit for open
circuit.
4. Check combination flasher unit ground circuit.
Turn signal lamps do not operate
but hazard warning lamps operate.1. 10A fuse
2. Hazard switch
3. Turn signal lamp switch
4. Open in turn signal lamp switch
circuit1. Check 10A fuse [No. 26, located in fuse block (J/B)].
Turn ignition switch ON and verify battery positive
voltage is present at terminal 2 of hazard switch.
2. Check hazard switch.
3. Check turn signal lamp switch.
4. Check the wire between combination flasher unit
terminal 3 and turn signal lamp switch terminal 1 for
open circuit.
Hazard warning lamps do not oper-
ate but turn signal lamps operate.1. 15A fuse
2. Hazard switch
3. Open in hazard switch circuit1. Check 15A fuse [No. 5, located in fuse block (J/B)].
Verify battery positive voltage is present at terminal
3 of hazard switch.
2. Check hazard switch.
3. Check the wire between combination flasher unit
terminal 3 and hazard switch terminal 4 for open
circuit.
Front turn signal lamp LH or RH
does not operate.1. Bulb
2. Grounds E30 and E73
3. Open in front turn signal lamp
circuit1. Check bulb.
2. Check grounds E30 and E73.
3. Check the wire between front turn signal lamp and
turn signal lamp switch.
Rear turn signal lamp LH or RH
does not operate.1. Bulb
2. Grounds B9, B21 and B308
3. Open in rear turn signal lamp
circuit1. Check bulb.
2. Check grounds B9, B21 and B308.
3. Check the wire between rear turn signal lamp and
turn signal lamp switch.
LH and RH turn indicators do not
operate.1. Ground 1. Check grounds M28 and M67.
LH or RH turn indicator does not
operate.1. Bulb
2. Open combination meter circuit1. Check bulb in combination meter.
2. Check the wire between hazard switch and combi-
nation meter.
SEL122E
Electrical Components InspectionNJEL0034COMBINATION FLASHER UNIT CHECKNJEL0034S01+Before checking, ensure that bulbs meet specifications.
+Connect a battery and test lamp to the combination flasher
unit, as shown. Combination flasher unit is properly function-
ing if it blinks when power is supplied to the circuit.
TURN SIGNAL AND HAZARD WARNING LAMPS
Trouble Diagnoses/Sedan
EL-101