1998 NISSAN PICK-UP warning light

System Components
System Description
WHEEL SENSOR
The sensor unit consists of a gear-shaped sensor rotor and a
sensor element. The element contains a bar magnet around
which a coil is wound. The sensor is installed on the back of the
brake rotor and the front of the differential (2WD) or the back of
the rear brake drum (4WD). As the wheel rotates, the sensor
generates a sine-wave pattern. The frequency and voltage
increase(s) as the rotating speed increases.
CONTROL UNIT (built in ABS actuator and electric
unit)
The control unit computes the wheel rotating speed by the sig-
nal current sent from the sensor. Then it supplies a DC current
to the actuator solenoid valve. It also controls ON-OFF operation
of the valve relay and motor relay. If any electrical malfunction
should be detected in the system, the control unit causes the
warning lamp to light up. In this condition, the ABS will be deac-
tivated by the control unit, and the vehicle's brake system reverts
to normal operation. (For control unit layout, refer to ABS
ACTUATOR AND ELECTRIC UNIT, BR-34.)
SBR068E
SBR069E
ANTI-LOCK BRAKE SYSTEM
BR-33

Malfunction Indicator Lamp (MIL)
The malfunction indicator lamp is located on the instrument
panel.
1. The malfunction indicator lamp will light up when the ignition
switch is turned ON without the engine running. This is for
checking the blown lamp.
lIf the malfunction indicator lamp does not light up, see the
WARNING LAMPS AND CHIME in the EL section.
(Or see EC-173, 174.)
2. When the engine is started, the malfunction indicator lamp
should go off.
If the lamp remains on, the on board diagnostic system has
detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following four functions.
Diagnostic Test Mode I
1. BULB CHECK : This function checks the bulb for damage (blown, open circuit, etc.) of
the malfunction indicator lamp.
If the MIL does not come on, check MIL circuit and ECM test mode
selector. (See next page.)
2. MALFUNCTION
WARNING: This is a usual driving condition. When a malfunction is detected, the
MIL will light up to inform the driver that a malfunction has been
detected.
Diagnostic Test Mode II
3. SELF-DIAGNOSTIC
RESULTS: This function allows DTCs to be read.
4. HEATED OXYGEN
SENSOR MONITOR: This function allows the fuel mixture condition (lean or rich), monitored
by heated oxygen sensor, to be read.
MIL Flashing without DTC
If the ECM is in Diagnostic Test Mode II, the MIL may flash when the engine is running. In this case, check
ECM test mode selector following ``HOW TO SWITCH DIAGNOSTIC TEST MODES'' on next page.
How to switch the diagnostic test (function) modes and details of the above functions are described later.
(See page EC-39, 41.)
ConditionDiagnostic
Test Mode IDiagnostic
Test Mode II
Ignition switch
in ``ON'' posi-
tion
Engine
stopped
BULB CHECKSELF-DIAGNOSTIC
RESULTS
Engine
running
MALFUNCTION
WARNINGHEATED OXYGEN
SENSOR MONI-
TOR
SEF055U
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONKA
EC-38

HEADLAMP - Headlamp Aiming Control -........... 63
System Description .............................................. 63
Wiring Diagram - H/AIM - .................................... 64
PARKING, LICENSE AND TAIL LAMPS............... 66
Wiring Diagram - TAIL/L -/Except for LHD
Models for Europe ............................................... 66
Wiring Diagram - TAIL/L -/LHD Models for
Europe.................................................................. 68
STOP LAMP............................................................ 70
Wiring Diagram - STOP/L - ................................. 70
BACK-UP LAMP...................................................... 71
Wiring Diagram - BACK/L - ................................. 71
REAR FOG LAMP................................................... 72
Wiring Diagram - R/FOG -/LHD Models .............. 72
Wiring Diagram - R/FOG -/RHD Models ............. 73
TURN SIGNAL AND HAZARD WARNING
LAMPS..................................................................... 74
Schematic ............................................................ 74
Wiring Diagram - TURN -/Except 4WD Models
for Europe ............................................................ 75
Wiring Diagram - TURN -/4WD Models for
Europe.................................................................. 77
Trouble Diagnoses ............................................... 80
Combination Flasher Unit Check ......................... 80
ILLUMINATION........................................................ 81
Wiring Diagram - ILL -/LHD Models .................... 81
Wiring Diagram - ILL -/RHD Models.................... 83
INTERIOR AND SPOT LAMPS............................... 85
Wiring Diagram - INT/L - ..................................... 85
Combination Meter............................................... 87
Schematic ............................................................ 89
Wiring Diagram - METER -/LHD Models............. 90
Wiring Diagram - METER -/RHD Models ............ 93
Unified Control Meter System Description .......... 96
Meter/gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode .................... 96
Flexible Print Circuit (FPC) .................................. 97
Trouble Diagnoses ............................................... 98
Electrical Components Inspection ..................... 103
WARNING LAMPS................................................ 105
Schematic .......................................................... 105
Wiring Diagram - WARN -/LHD Models ............ 106
Wiring Diagram - WARN -/RHD Models............ 111
Electrical Components Inspection ..................... 116
WARNING BUZZER.............................................. 117
Wiring diagram - BUZZER -/LHD Models for
Europe................................................................ 117
Wiring diagram - BUZZER -/RHD Models for
Europe................................................................ 118
Electrical Components Inspection ..................... 119
FRONT WIPER AND WASHER............................ 120
System Description ............................................ 120
Wiring Diagram - WIPER -/LHD Models with
Intermittent ......................................................... 122Wiring Diagram - WIPER -/RHD Models with
Intermittent ......................................................... 124
Trouble Diagnoses ............................................. 126
Wiper Installation and Adjustment ..................... 127
Washer Nozzle Adjustment ............................... 128
Washer Tube Layout ......................................... 128
Wiper Linkage .................................................... 129
HEADLAMP WASHER.......................................... 130
Wiring Diagram - HLC - ..................................... 130
Trouble Diagnoses ............................................. 131
Washer Tube Layout ......................................... 131
Check Valve ....................................................... 131
HORN..................................................................... 132
Wiring Diagram - HORN -.................................. 132
CIGARETTE LIGHTER.......................................... 133
Wiring Diagram - CIGAR - ................................. 133
CLOCK................................................................... 134
Wiring Diagram - CLOCK - ................................ 134
REAR WINDOW DEFOGGER............................... 135
Wiring Diagram - DEF - ..................................... 135
Electrical Components Inspection ..................... 136
Filament Check .................................................. 136
Filament Repair.................................................. 137
AUDIO.................................................................... 138
Wiring Diagram - AUDIO -/LHD Models Type-
2 ......................................................................... 138
Wiring Diagram - AUDIO -/LHD Models Type-
3 ......................................................................... 139
Wiring Diagram - AUDIO -/RHD Models ........... 141
Trouble Diagnoses ............................................. 142
CATS (Code) System/For Europe RHD ............ 143
NATS Audio Link/For Europe LHD (KA24E) ..... 144
AUDIO ANTENNA................................................. 146
Manual Antenna ................................................. 146
Power Antenna/Wiring Diagram - P/ANT - ........ 147
Power Antenna .................................................. 148
POWER DOOR MIRROR...................................... 150
Wiring Diagram - MIRROR -.............................. 150
HEATED SEAT...................................................... 152
Wiring Diagram - H/SEAT - ............................... 152
POWER WINDOW................................................. 154
System Description ............................................ 154
Schematic .......................................................... 156
Wiring Diagram - WINDOW -/LHD Models ....... 157
Wiring Diagram - WINDOW -/RHD Models ....... 161
Trouble Diagnoses ............................................. 165
POWER DOOR LOCK........................................... 166
System Description ............................................ 166
Wiring Diagram - D/LOCK - ............................... 167
Trouble Diagnosis .............................................. 169
MULTI-REMOTE CONTROL SYSTEM/FOR
EUROPE................................................................ 173
System Description ............................................ 173
Schematic .......................................................... 174

EARTH CONNECT TO CONN. NO. CELL CODE
M1/M54 ACCESSORY RELAY (In fuse block) M14 EL-POWER
AIR BAG DIAGNOSIS SENSOR UNIT (4WD
models)M110 RS-SRS
ASHTRAY ILLUMINATION M34 EL-ILL
BLOWER RELAY (In fuse block) M14 EL-POWER
CHECK CONNECTOR (NA engine) M12 EC-CHOKE
CHECK CONNECTOR (Z engine) M13 EC-CHOKE
CIGARETTE LIGHTER SOCKET M37 EL-CIGAR
COMBINATION FLASHER UNIT M15 EL-TURN
DOOR LOCK TIMER M51 EL-D/LOCK
DOOR SWITCH DRIVER SIDE (For Europe) M118 EL-BUZZER EL-MULTI
ECM (ENGINE CONTROL MODULE) M66 EC-GLOW EC-PLA EC-EGRC/V
FAN SWITCH ILLUMINATION (Except for
Europe and Australia)M403 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH ILLUMINATION (For Europe and
Australia)M40 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH (Except for Europe and Australia) M404 EC-FIPOT HA-HEATER HA-A/C,M
FAN SWITCH (For Europe and Australia) M39 HA-HEATER HA-A/C,M
FRONT SEAT LH M119 EL-H/SEAT
FRONT SEAT RH M122 EL-H/SEAT
FRONT WIPER AMPLIFIER
(RHD models without KA engine and LHD mod-
els)M220 EL-WIPER
FRONT WIPER AND WASHER SWITCH M28 EL-WIPER
FRONT WIPER MOTOR
(RHD models without KA engine and LHD mod-
els)M221 EL-WIPER
FUEL FILTER SWITCH (LHD models with die-
sel engine)M259 EL-WARN EL-BUZZER
FUEL PUMP CONTROL MODULE M22 EC-FPCM
FUEL RETURN CONTROL SOLENOID VALVE
(LHD models with NA engine)M257 EC-F/RTN
GLOW CONTROL UNIT
(TD27 engine except for cold areas and QD
engine)M29 EC-GLOW EC-PLA
GLOW CONTROL UNIT (TD27 engine for cold
areas)M30 EC-GLOW EC-PLA
GLOW RELAY-1 (LHD models with diesel
engine except for Europe)M253 EC-GLOW
GLOW RELAY-2 (TD27 engine for cold areas) M256 EC-GLOW
HAZARD SWITCH M41 EL-TURN EL-ILL
HEADLAMP WASHER SWITCH M70 EL-ILL EL-HLC
HEATED SEAT SWITCH LH M602 EL-H/SEAT
HEATED SEAT SWITCH RH M603 EL-H/SEAT
IACV-FICD SOLENOID VALVE (KA engine) M203 EC-FICD HA-A/C,M
IGNITION RELAY (In fuse block) M14 EL-POWER
MULTI-REMOTE CONTROL RELAY-3 M706 EL-MULTI
MULTI-REMOTE CONTROL RELAY-4 M707 EL-MULTI
MULTI-REMOTE CONTROL UNIT M703 EL-MULTI
POWER WINDOW RELAY M9 EL-WINDOW
REAR WINDOW DEFOGGER SWITCH M42 EL-DEF
SEAT BELT SWITCH M109 EL-WARN
SPIRAL CABLE (2WD models with air bag) M26 RS-SRS
COMBINATION METER (4WD WARNING
LAMP)N6 EL-WARN
COMBINATION METER (ABS WARNING
LAMP)N6 BR-ABS EL-WARN
GROUND DISTRIBUTION
EL-14

Electrical Components Inspection
FUEL WARNING LAMP SENSOR CHECK
lIt will take a short time for the bulb to light.
OIL PRESSURE SWITCH CHECK
Oil pressure
kPa (bar, kg/cm2, psi)Continuity
Engine startMore than 10 - 20
(0.10 - 0.20, 0.1 - 0.2,1-3)NO
Engine stopLess than 10 - 20
(0.10 - 0.20, 0.1 - 0.2,1-3)YES
Check the continuity between the terminals of oil pressure switch
and body ground.
DIODE CHECK
lCheck continuity using an ohmmeter.
lDiode is functioning properly if test results are as shown in
the figure at left.
NOTE: Specification may vary depending on the type of
tester. Before performing this inspection, be sure to
refer to the instruction manual for the tester to be
used.
lDiodes for warning lamps are built into the combination meter
printed circuit.
GEL191
MEL425F
SEL901F
GEL192
WARNING LAMPS
EL-116

Wiring diagram Ð BUZZER Ð/LHD Models
for Europe
LIGHT WARNING BUZZER
HEL370A
WARNING BUZZER
EL-117

Wiring diagram Ð BUZZER Ð/RHD Models
for Europe
LIGHT WARNING BUZZER
HEL371A
WARNING BUZZER
EL-118

Electrical Components Inspection
FUEL FILTER WARNING BUZZER CHECK
LIGHT WARNING BUZZER
1. Apply 12V direct current to warning buzzer unit terminalsV10
andV4.
Warning buzzer should sound.
2. Apply 12V direct current to warning buzzer unit terminals
V10,
V11andV4.
Warning buzzer should not sound.
GEL208
SEL644V
SEL645V
WARNING BUZZER
EL-119