INFINITI QX4 2001 Factory Service Manual

Combination MeterNBEL0043CHECKNBEL0043S01
MEL130M
METERS AND GAUGES
Combination Meter
EL-96

CONSTRUCTIONNBEL0043S02
SEL644W
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Combination Meter (Cont'd)
EL-97

SchematicNBEL0199
MEL131M
METERS AND GAUGES
Schematic
EL-98

Wiring Diagram Ð METER ÐNBEL0045
MEL793L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Wiring Diagram Ð METER Ð
EL-99

Meter/Gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode
NBEL0200DIAGNOSIS FUNCTIONNBEL0200S01IOdo/trip meter segment can be checked in diagnosis mode.
IMeters/gauges can be checked in diagnosis mode.
HOW TO ALTERNATE DIAGNOSIS MODENBEL0200S021. Turn ignition switch to ON and change odo/trip meter to ªTRIP
Aº or ªTRIP Bº.
2. Turn ignition switch to OFF.
3. Turn ignition switch to ON when pushing odo/trip meter switch.
4. Push odo/trip meter switch 1 second.
5. Release odo/trip meter switch.
6. Push odo/trip meter switch more than three times within 7
seconds.
SEL176W
7. All odo/trip meter segments should be turned on.
NOTE:
If some segments are not turned on, unified meter control unit with
odo/trip meter should be replaced.
At this point, the unified control meter is turned to diagnosis
mode.
SEL177W
8. Push odo/trip meter switch. Indication of each meter/gauge
should be as shown left during pushing odo/trip meter switch
if it is no malfunctioning.
NOTE:
It takes about a few seconds for indication of fuel gauge and water
temperature gauge to become stable.
METERS AND GAUGES
Meter/Gauge Operation and Odo/Trip Meter Segment Check in Diagnosis Mode
EL-100

Trouble DiagnosesNBEL0201PRELIMINARY CHECKNBEL0201S01
SEL361W
*1: Meter/Gauge Operation and Odo/
Trip Meter Segment Check in
Diagnosis Mode (EL-100)
*2: METER/GAUGE RESISTANCE
CHECK (EL-108)*3: POWER SUPPLY AND GROUND
CIRCUIT CHECK (EL-103)
*4: Symptom Chart 1 (EL-102)*5: Symptom Chart 2 (EL-102)
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Trouble Diagnoses
EL-101

SYMPTOM CHARTNBEL0201S02Symptom Chart 1 (Malfunction is Indicated in
Diagnosis Mode)
NBEL0201S0201
Symptom Possible causes Repair order
Odo/trip meter indicate(s)
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-108.
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)
NBEL0201S0202
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-104.)
INSPECTION/ENGINE REVOLUTION SIGNAL
(Refer to EL-105.)
INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to
EL-106.)
INSPECTION/THERMAL TRANSMITTER (Refer to
EL-107.)
2. Replace unified meter control unit. Multiple meter/gauge are
malfunctioning. (except
odo/trip meter)
Before starting trouble diagnoses below, perform PRELIMINARY
CHECK, EL-101.
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-102

SEL179WB
POWER SUPPLY AND GROUND CIRCUIT CHECK=NBEL0201S03Power Supply Circuit CheckNBEL0201S0301
Terminals Ignition switch position
(+) (þ) OFF ACC ON
62 GroundBattery
voltageBattery
voltageBattery
voltage
66 Ground 0V 0VBattery
voltage
If NG, check the following.
I10A fuse [No. 12, located in fuse block (J/B)]
I10A fuse [No. 30, located in fuse block (J/B)]
IHarness for open or short between fuse and combination
meter
SEL180WA
Ground Circuit CheckNBEL0201S0302
Terminals Continuity
59 - Ground Yes
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-103

INSPECTION/VEHICLE SPEED SENSOR=NBEL0201S04
1 CHECK VEHICLE SPEED SENSOR OUTPUT
1. Remove vehicle speed sensor from transmission.
2. Check voltage between combination meter terminals 15 and 63 while quickly turning speed sensor pinion.
SEL297X
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.
SEL298X
OK or NG
OK©Check harness or connector between speedometer and vehicle speed sensor.
NG©Replace vehicle speed sensor.
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-104

INSPECTION/ENGINE REVOLUTION SIGNALNBEL0201S05
1 CHECK ECM OUTPUT
1. Start engine.
2. Check voltage between combination meter terminals 16 and ground at idle and 2,000 rpm.
SEL364WB
OK or NG
OK©Engine revolution signal is OK.
NG©Harness for open or short between ECM and combination meter
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Trouble Diagnoses (Cont'd)
EL-105