NISSAN ALMERA N16 2001 Electronic Repair Manual

Trouble DiagnosesNJEL0448PRELIMINARY CHECKNJEL0448S01
SEL361WA
*1: Combination Meter Self-Diagnosis
(EL-96)*3: POWER SUPPLY AND GROUND
CIRCUIT CHECK (EL-101)*4: Symptom Chart 1 (EL-100)
*5: Symptom Chart 2 (EL-100)
METERS AND GAUGES
Trouble Diagnoses
EL-99

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-102.)
INSPECTION/ENGINE REVOLUTION SIGNAL
(Refer to EL-103.)
INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to
EL-104.)
INSPECTION/THERMAL TRANSMITTER (Refer to
EL-105.)
2. Replace unified meter control unit. Multiple meter/gauge are
malfunctioning. (except
odo/trip meter)
Before starting trouble diagnoses below, perform PRELIMINARY
CHECK, EL-99.
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-100

YEL793C
POWER SUPPLY AND GROUND CIRCUIT CHECK=NJEL0448S03Power Supply Circuit CheckNJEL0448S0301
Terminals Ignition switch position
(+) (þ) OFF ACC ON
23 GroundBattery
voltageBattery
voltageBattery
voltage
1 Ground 0V 0VBattery
voltage
If NG, check the following.
+10A fuse [No. 12, located in fuse block (J/B)]
+10A fuse [No. 30, located in fuse block (J/B)]
+Harness for open or short between fuse and combination
meter
YEL794C
Ground Circuit CheckNJEL0448S0302
Terminals Continuity
10 - Ground Yes
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-101

INSPECTION/VEHICLE SPEED SENSOR=NJEL0448S04
1 CHECK VEHICLE SPEED SENSOR OUTPUT
1. Remove vehicle speed sensor from transmission.
2. Check voltage between combination meter terminal 5 and ground while quickly turning speed sensor pinion.
YEL795C
OK or NG
OK©Vehicle speed sensor is OK.
NG©GO TO 2.
2 CHECK VEHICLE SPEED SENSOR
Check resistance between vehicle speed sensor terminals 1 and 2.
SEL645WA
OK or NG
OK©Check the following.
+Harness between combination meter and vehicle speed sensor
+Vehicle speed sensor ground circuit
NG©Replace vehicle speed sensor.
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-102

INSPECTION/ENGINE REVOLUTION SIGNAL=NJEL0448S05
1 CHECK ECM OUTPUT
1. Start engine.
2. Check voltage between combination meter terminals 22 and ground at idle and 2,000 rpm.
YEL796C
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 (Cont'd)
EL-103

INSPECTION/FUEL LEVEL SENSOR UNIT=NJEL0448S06
1 CHECK GROUND CIRCUIT FOR FUEL LEVEL SENSOR UNIT
Check harness continuity between fuel level sensor unit connector terminal 1 and ground.
SEL400X
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-106).
OK or NG
OK©GO TO 3.
NG©Replace fuel level sensor unit.
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 24 and fuel level sensor unit connector terminal 4.
Continuity should exist.
3. Check continuity between combination meter terminal 24 and ground.
Continuity should not exist.
YEL797C
OK or NG
OK©Fuel level sensor unit is OK.
NG©Repair harness or connector.
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-104

INSPECTION/THERMAL TRANSMITTER=NJEL0448S07
1 CHECK THERMAL TRANSMITTER
Refer to ªTHERMAL TRANSMITTER CHECKº (EL-106).
OK or NG
OK©GO TO 2.
NG©Replace.
2 CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and thermal transmitter connector.
2. Check continuity between combination meter terminal 20 and thermal transmitter terminal 1.
Continuity should exist.
3. Check continuity between combination meter terminal 20 and ground.
Continuity should not exist.
YEL798C
OK or NG
OK©Thermal transmitter is OK.
NG©Repair harness or connector.
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-105

SEL498X
Electrical Components Inspection=NJEL0449FUEL LEVEL SENSOR UNIT CHECKNJEL0449S02+For removal, refer to FE-6, FE-18, ªFUEL SYSTEMº.
Check the resistance between terminals 4 and 1.
Ohmmeter
Float position mm (in)Resistance
valueW
(+) (þ)
41*1 Full 142.5 (5.61) Approx.4-6
*2 1/2 88.7 (3.492) 32 - 33
*3 Empty 11.1 (0.437) 80 - 83
*1 and *3: When float rod is in contact with stopper.
MEL424F
THERMAL TRANSMITTER CHECKNJEL0449S03Check the resistance between the terminals of thermal transmitter
and body ground.
Water temperature Resistance
65ÉC (149ÉF) Approx. 1,179 - 1,417W
91ÉC (196ÉF) Approx. 474 - 568W
CEL219AA
VEHICLE SPEED SENSOR SIGNAL CHECKNJEL0449S041. Remove vehicle speed sensor from transmission.
2. Turn vehicle speed sensor pinion quickly and measure voltage
across 1 and 2.
METERS AND GAUGES
Electrical Components Inspection
EL-106

SchematicNJEL0450
YEL652C
WARNING LAMPS
Schematic
EL-107

Wiring Diagram Ð WARN ÐNJEL0451
YEL653C
WARNING LAMPS
Wiring Diagram Ð WARN Ð
EL-108