check engine NISSAN ALMERA 2001 Service Manual

3 CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT-II
1. Turn ignition switch ªOFFº.
2. Disconnect ECM relay. (For ECM relay location, refer to ªEngine Control Component Parts Locationº.)
3. Check harness continuity between ECM relay terminal 5 and EGR volume control valve terminals 2 and 5. Refer to
Wiring Diagram.
Continuity should exist.
OK or NG
OK©GO TO 4.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT-III
Check voltage between ECM relay terminal 3 and ground with CONSULT-II or tester.
SEF413Y
OK or NG
OK©GO TO 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E75, F36 (Sedan models and hatchback models with ECM in engine compartment)
+10A fuse
+Harness for open or short between ECM relay and battery
©Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between ECM relay terminals 3 and 5, 6 and 7.
SEF296X
OK or NG
OK©GO TO 7.
NG©Replace ECM relay.
EGR VOLUME CONTROL SYSTEMYD
Diagnostic Procedure (Cont'd)
EC-820

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

Aiming AdjustmentNJEL0016For details, refer to the regulations in your own country.
Before performing aiming adjustment, check the following.
1) Keep all tires inflated to correct pressures.
2) Place vehicle on flat surface.
3) See that there is no-load in vehicle (coolant, engine oil filled up
to correct level and full fuel tank) other than the driver (or
equivalent weight placed in driver's position).
SEL984W
CAUTION:
Be sure aiming switch is set to ª0º when performing aiming
adjustment on vehicles equipped with headlamp aiming con-
trol.
HEADLAMP
Aiming Adjustment
EL-65

SYMPTOM CHARTNJEL0046S10Symptom Chart 1 (Malfunction is Indicated in
Diagnosis Mode)
NJEL0046S1001
Symptom Possible causes Repair order
Odo/trip meter indicates
malfunction in Diagnosis
mode.Unified meter control unit Replace unified meter control unit.
Multiple meter/gauge indi-
cate malfunction in Diagno-
sis mode.
One of speedometer/
tachometer/fuel gauge/
water temp. gauge indi-
cates malfunction in Diag-
nosis mode.1. Meter/Gauge
2. Unified meter control unit1. Check resistance of meter/gauge indicating malfunc-
tion. If the resistance is NG, replace the meter/gauge.
Refer to ªMETER/GAUGE RESISTANCE CHECKº,
EL-162.
2. If the resistance of meter/gauge is OK, replace unified
meter control unit.
Symptom Chart 2 (No Malfunction is Indicated in
Diagnosis Mode)
NJEL0046S1002
Symptom Possible causes Repair order
One of speedometer/
tachometer/fuel gauge/
water temp. gauge is mal-
functioning.1. Sensor signal
- Vehicle speed signal
- Engine revolution signal
- Fuel gauge
- Water temp. gauge
2. Unified meter control unit1. Check the sensor for malfunctioning meter/gauge.
INSPECTION/VEHICLE SPEED SENSOR (Refer to
EL-157.)
INSPECTION/ENGINE REVOLUTION SIGNAL
(Refer to EL-158.)
INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to
EL-159.)
INSPECTION/THERMAL TRANSMITTER (Refer to
EL-161.)
2. Replace unified meter control unit. Multiple meter/gauge are
malfunctioning. (except
odo/trip meter)
Before starting trouble diagnoses below, perform PRELIMINARY
CHECK, EL-154.
METERS AND GAUGES
Trouble Diagnoses/Sedan (Cont'd)
EL-155

INSPECTION/ENGINE REVOLUTION SIGNAL=NJEL0046S02
1 CHECK ECM OUTPUT
1. Start engine.
2. Check voltage between combination meter terminals 21 and ground at idle and 2,000 rpm.
SEL658X
OK or NG
OK©Engine revolution signal is OK.
NG©Harness for open or short between ECM and combination meter
METERS AND GAUGES
Trouble Diagnoses/Sedan (Cont'd)
EL-158

INSPECTION/FUEL LEVEL SENSOR UNIT=NJEL0046S08
1 CHECK GROUND CIRCUIT FOR FUEL LEVEL SENSOR UNIT
Check harness continuity between fuel level sensor unit connector terminal 1 (Gasoline engine models) or 3 (Diesel
engine models) and ground.
SEL963W
OK or NG
OK©GO TO 2.
NG©Repair harness or connector.
2 CHECK FUEL LEVEL SENSOR UNIT
Refer to ªFUEL LEVEL SENSOR UNIT CHECKº (EL-162).
OK or NG
OK©GO TO 3.
NG©Replace fuel level sensor unit.
METERS AND GAUGES
Trouble Diagnoses/Sedan (Cont'd)
EL-159

3 CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and fuel level sensor unit connector.
2. Check continuity between combination meter terminal 20 (with tachometer) or 35 (without tachometer) or and fuel level
sensor unit connector terminal 4 (Gasoline engine) or 1 (Diesel engine).
Continuity should exist.
3. Check continuity between combination meter terminal 20 (with tachometer) or 35 (without tachometer) or and ground.
Continuity should not exist.
SEL659X
OK or NG
OK©Fuel level sensor unit is OK.
NG©Repair harness or connector.
METERS AND GAUGES
Trouble Diagnoses/Sedan (Cont'd)
EL-160

Electrical Components Inspection/Sedan=NJEL0047METER/GAUGE RESISTANCE CHECKNJEL0047S04Check resistance between installation screws of meter/gauge after
removing meter/gauge.
Screws
Resistance
W
Tacho/Speedometer Fuel/Temp. gauge
A - C A - C Approx. 190 - Approx. 260
B - D B - C Approx. 230 - Approx. 310
SEL933W
SEL962W
FUEL LEVEL SENSOR UNIT CHECKNJEL0047S01+For removal, refer to FE-6, FE-23, ªFUEL SYSTEMº.
Gasoline Engine ModelsNJEL0047S0103Check the resistance between terminals 4 and 1.
Ohmmeter
Float position mm (in)Resistance
valueW
(+) (þ)
41*1 Full 38 (1.50) Approx.5-6
*2 1/2 89 (3.50) 32 - 33
*3 Empty 162 (6.38) 80 - 83
*1 and *3: When float rod is in contact with stopper.
Diesel EngineNJEL0047S0104Check the resistance between terminals 1 and 3.
Ohmmeter
Float position mm (in)Resistance
valueW
(+) (þ)
13*1 Full 38 (1.50) Approx.5-6
*2 1/2 90 (3.50) 32 - 33
*3 Empty 162 (6.38) 80 - 83
*1 and *3: When float rod is in contact with stopper.
METERS AND GAUGES
Electrical Components Inspection/Sedan
EL-162

SYMPTOM CHARTNJEL0448S02Symptom Chart 1 (Malfunction is Indicated in
Diagnosis Mode)
NJEL0448S0201
Symptom Possible causes Repair order
Odo/trip meter indicates
malfunction in Diagnosis
mode.Unified meter control unit Replace unified meter control unit.
Multiple meter/gauge indi-
cate malfunction in Diagno-
sis mode.
One of speedometer/
tachometer/fuel gauge/
water temp. gauge indi-
cates malfunction in Diag-
nosis mode.1. Meter/Gauge
2. Unified meter control unit1. Check resistance of meter/gauge indicating malfunc-
tion. If the resistance is NG, replace the meter/
gauge.
2. If the resistance of meter/gauge is OK, replace uni-
fied meter control unit.
Symptom Chart 2 (No Malfunction is Indicated in
Diagnosis Mode)
NJEL0448S0202
Symptom Possible causes Repair order
One of speedometer/
tachometer/fuel gauge/
water temp. gauge is mal-
functioning.1. Sensor signal
- Vehicle speed signal
- Engine revolution signal
- Fuel gauge
- Water temp. gauge
2. Unified meter control unit1. Check the sensor for malfunctioning meter/gauge.
INSPECTION/VEHICLE SPEED SENSOR (Refer to
EL-179.)
INSPECTION/ENGINE REVOLUTION SIGNAL
(Refer to EL-180.)
INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to
EL-181.)
INSPECTION/THERMAL TRANSMITTER (Refer to
EL-182.)
2. Replace unified meter control unit. Multiple meter/gauge are
malfunctioning. (except
odo/trip meter)
Before starting trouble diagnoses below, perform PRELIMINARY
CHECK, EL-176.
METERS AND GAUGES
Trouble Diagnoses/Hatchback (Cont'd)
EL-177

INSPECTION/ENGINE REVOLUTION SIGNAL=NJEL0448S05
1 CHECK ECM OUTPUT
1. Start engine.
2. Check voltage between combination meter terminals 30 (M152), 22 (M171) and ground at idle and 2,000 rpm.
YEL780C
OK or NG
OK©Engine revolution signal is OK.
NG©Harness for open or short between ECM and combination meter
METERS AND GAUGES
Trouble Diagnoses/Hatchback (Cont'd)
EL-180