1999 NISSAN PICK-UP Repair Manual

Wiring Diagram Ð METER Ð/Diesel Engine
with Tachometer
HEL718A
METER AND GAUGES
EL-2054

HEL719A
METER AND GAUGES
Wiring Diagram Ð METER Ð/Diesel Engine
with Tachometer (Cont'd)
EL-2055

Wiring Diagram Ð METER Ð/Gasoline
Engine without Tachometer
HEL720A
METER AND GAUGES
EL-2056

Wiring Diagram Ð METER Ð/Diesel Engine
without Tachometer
HEL721A
METER AND GAUGES
EL-2057

Unified Control Meter System Description
UNIFIED CONTROL METER
Speedometer, odo/trip meter, tachometer, fuel gauge and water
temperature gauge are controlled totally by unified meter control
unit.
Meter/gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode
DIAGNOSIS FUNCTION
lOdo/trip meter segment can be checked in diagnosis mode.
lMeters/gauges can be checked in diagnosis mode.
HOW TO ALTERNATE DIAGNOSIS MODE
1. Turn ignition switch to ON and change odo/trip meter to
``TRIP A'' or ``TRIP B''.
2. Turn ignition switch to OFF.
3. Turn ignition switch to ON when pushing odo/trip meter
switch.
4. Confirm that trip meter indicates ``000.0''.
5. Push odo/trip meter switch more than three times within 5
seconds.
6. All odo/trip meter segments should be turned on.
NOTE: If some segments are not turned on, unified meter
control unit should be replaced.
At this point, the unified control meter is turned to diagnosis
mode.
7. 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 1 minute for indication of fuel gauge
to become stable.
SEL110V
SEL111VA
METER AND GAUGES
EL-2058

Flexible Print Circuit (FPC) (Models with
Tachometer)
Tachometer, fuel gauge and water temperature gauge are con-
nected with unified meter control unit (speedometer) by Flexible
Print Circuit (FPC) connector. When replace or remove and
install unified control unit (speedometer), disconnect and con-
nect FPC connector according to the following steps.
DISCONNECT
1. Open connector cover.
2. Release connector lock by holding both ends of it and pull-
ing it up.
3. Disconnect FPC by pulling it up.
CONNECT
1. Insert FPC into connector and lock connector pushing FPC
downward.
2. Check secure connection of FPC.
3. Check continuity of check land terminals for secure connec-
tion of FPC.
Resistance: 0W
4. Close connector cover.
SEL427W
SEL109V
SEL162V
METER AND GAUGES
Meter/gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode (Cont'd)
EL-2059

Trouble Diagnoses/Models with Tachometer
PRELIMINARY CHECK
CHECK-IN
Can Diagnosis mode
be activated? Refer to
``Meter/Gauge Opera-
tion and Odo/Trip Meter
Segment Check in
Diagnosis Mode'',
EL-2058.
Yes
cNo
Do meter warning
lamps operate?
No
cYes
Check the screws
securing speedometer
and FPC.
(The screws are
located behind the
combination meter. For
details refer to
EL-2070.)cCan Diagnosis mode
be activated?
NomYes
Check power supply
and ground circuit.
Refer to ``POWER
SUPPLY AND
GROUND CIRCUIT
CHECK'', EL-2062.
Check meter/gauge
operation in Diagnosis
mode.b
Malfunction is indicated
in Diagnosis mode.No malfunction is indi-
cated in Diagnosis
mode.Replace speedometer
(unified meter control
unit).
Check the following:
lFPC connector con-
nection
Refer to ``Flexible
Print Circuit (FPC)'',
EL-2059.
lScrews securing the
malfunctioning meter/
gauge
(The screws are
located behind the
combination meter.
For details refer to
EL-2070.)
OK
NGSYMPTOM CHART 2
Refer to EL-2061.
SYMPTOM CHART 1
Refer to EL-2061.Reconnect FPC connector and check continuity between
check land terminals and/or repair malfunctioning part.
Refer to ``Flexible Print Circuit (FPC)'', EL-2059.
.
.
.
...
..
..
METER AND GAUGES
EL-2060

Before starting trouble diagnoses below, perform PRELIMINARY CHECK, EL-2060.
SYMPTOM CHART 1 (MALFUNCTION IS INDICATED IN DIAGNOSIS MODE)
Symptom Possible causes Repair order
Speedometer and/or odo/trip
meter indicate(s) malfunction
in Diagnosis mode.
lSpeedometer (Unified meter control unit)lReplace speedometer (unified meter control unit).
Multiple meter/gauge indicate
malfunction in Diagnosis
mode.
One of tachometer/fuel gauge/
water temp. gauge indicates
malfunction in Diagnosis
mode.
lMeter/GaugelSpeedometer (Unified meter control unit)1. Check resistance of meter/gauge indicating malfunction. If
the resistance is NG, replace the meter/gauge. Refer to
``METER/GAUGE RESISTANCE CHECK'', EL-2070.
2. If the resistance is OK, replace speedometer (unified meter
control unit).
SYMPTOM CHART 2 (NO MALFUNCTION IS INDICATED IN DIAGNOSIS MODE)
Symptom Possible causes Repair order
Speedometer and odo/trip
meter are malfunctioning.1. Sensor
- Speedometer, Odo/Trip meter
2. FPC connector
3. Speedometer (Unified meter control unit)1. Check vehicle speed sensor.
INSPECTION/VEHICLE SPEED SENSOR (Refer to
EL-2063.)
2. Check FPC connector. Refer to ``FLEXIBLE PRINT CIRCUIT
(FPC)'', EL-2059.
3. Replace speedometer (unified meter control unit).
Multiple meter/gauge are mal-
functioning. (except
speedometer, odo/trip meter)1. FPC connector
2. Speedometer (Unified meter control unit)1. Check FPC connector. Refer to ``FLEXIBLE PRINT CIRCUIT
(FPC)'', EL-2059.
2. Replace speedometer (unified meter control unit).
One of tachometer/fuel gauge/
water temp. gauge is malfunc-
tioning.1. Sensor/Engine revolution signal
- Tachometer
- Fuel gauge
- Water temp. gauge
2. FPC connector
3. Speedometer (Unified meter control unit)1. Check the sensor for malfunctioning meter/gauge.
INSPECTION/ENGINE REVOLUTION SIGNAL (Refer to
EL-2063.)
INSPECTION/FUEL TANK GAUGE (Refer to EL-102.)
INSPECTION/THERMAL TRANSMITTER (Refer to
EL-2064.)
2. Check FPC connector. Refer to ``Flexible Print Circuit
(FPC)'', EL-2059.
3. Replace speedometer (unified meter control unit).
METER AND GAUGES
Trouble Diagnoses/Models with Tachometer
(Cont'd)
EL-2061