1998 NISSAN PATROL Start

Trouble Diagnoses
DAYTIME LIGHT CONTROL UNIT INSPECTION TABLE
Terminal No. ConnectionsINPUT (I)/
OUTPUT (O)Operated conditionVoltage (V)
(Approximate
values)
1Power source for illumi-
nation & tail lampÐÐ12
2Power source for head-
lamp LHÐÐ12
3Power source for head-
lamp RHÐÐ12
4 Headlamp RH OON (daytime light operating*) 12
OFF 0
5 Headlamp LH OON (daytime light operating*) 12
OFF 0
6 Start signal I Ignition switchSTART 12
ON, ACC or OFF 0
7 Power source Ð Ignition switchON or START 12
ACC or OFF 0
8 Alternator ``L'' terminal I EngineRunning 12
Stopped 0
9 Ground Ð Ð Ð
10 Illumination & tail lamp OON (daytime light operating*) 12
OFF 0
11 Lighting switch I1STz2ND position 12
OFF 0
*: Daytime light operating: Lighting switch in ``OFF'' position with engine running.
Bulb Replacement
Refer to ``HEADLAMP'' (EL-63).
Aiming Adjustment
Refer to ``HEADLAMP'' (EL-63).
HEADLAMP Ð Daytime Light System Ð
EL-69

System Description
CIRCUIT OPERATION
[Example]
Aiming switch ``0''
+When the aiming switch is set to ``0'', the motor will not start.
This is because the power terminals are positioned at the non-
conductive section of the sensor's rotary unit.
Aiming switch ``0''®``1''
+When the aiming switch is moved from ``0'' to ``1'', the sensor's
conductive section activates the relay. Power is supplied
through the relay to the motor. The headlamps will then move
in the ``DOWN'' direction.
+The motor continues to rotate while the rotary unit of the sen-
sor moves from point A to point B.
+The power terminals will then be positioned at the nonconduc-
tive section, disconnecting the power to the motor. The motor
will then stop.
Aiming switch ``1''®``0''
+When the aiming switch is moved from ``1'' to ``0'', the sensor's
conductive section activates the relay. Power is supplied
through the relay to the motor. The motor will rotate to move the
headlamps in the ``UP'' direction.
+When the rotary unit of the sensor moves from point B to point
A, the motor will stop.
SEL465M
SEL364P
SEL365P
HEADLAMP Ð Headlamp Aiming Control Ð
EL-70

SYMPTOM CHART
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.+Speedometer (Uni®ed meter control unit)+Replace speedometer (uni®ed meter control unit).
Multiple meter/gauge indicate
malfunction in Diagnosis
mode.
One of tachometer/fuel gauge/
water temp. gauge indicates
malfunction in Diagnosis
mode.+Meter/Gauge
+Speedometer (Uni®ed 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-114.
2. If the resistance is OK, replace speedometer (uni®ed 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 (Uni®ed meter control unit)1. Check vehicle speed sensor.
INSPECTION/VEHICLE SPEED SENSOR (Refer to EL-112.)
2. Check FPC connector. Refer to ``Flexible Print Circuit
(FPC)'', EL-109.
3. Replace speedometer (uni®ed meter control unit).
Multiple meter/gauge are mal-
functioning. (except
speedometer, odo/trip meter)1. FPC connector
2. Speedometer (Uni®ed meter control unit)1. Check FPC connector. Refer to ``Flexible Print Circuit
(FPC)'', EL-109.
2. Replace speedometer (uni®ed 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 (Uni®ed meter control unit)1. Check the sensor for malfunctioning meter/gauge.
INSPECTION/ENGINE REVOLUTION SIGNAL (Refer to
EL-113.)
INSPECTION/FUEL TANK GAUGE (Refer to EL-113.)
INSPECTION/THERMAL TRANSMITTER (Refer to EL-114.)
2. Check FPC connector. Refer to ``Flexible Print Circuit
(FPC)'', EL-109.
3. Replace speedometer (uni®ed meter control unit).
Before starting trouble diagnoses above, perform PRELIMINARY CHECK, EL-110.
POWER SUPPLY AND GROUND CIRCUIT CHECK
Power supply circuit check
Terminals Ignition switch position
Å@OFF ACC ON
j
33GroundBattery
voltageBattery
voltageBattery
voltage
j
9Ground 0V 0VBattery
voltage
If NG, check the following.
+7.5A fuse [No.
24, located in fuse block (J/B)]
+10A fuse [No.
28, located in fuse block (J/B)]
+Harness for open or short between fuse and combination meter
SEL419V
METER AND GAUGES
Trouble Diagnoses (Cont'd)
EL-111

a) The temperature detected by the ambient air temperature sensor is lower than the indicated tem-
perature on the thermometer.
b) The difference in temperature detected during a period of 40 seconds is less than 1ÉC (1.8ÉF) when
vehicle speed has been greater than 24 km/h (15 MPH) for more than 100 seconds.
(This is to prevent the indicated temperature from being affected by engine heat or cooling fan
operation during low-speed driving.)
c) The ignition key has been turned to the ``OFF'' position for more than 4 hours. (The engine is cold.)
Calibration Procedure For Compass
The difference between magnetic North and geographical North
can sometimes be great enough to cause false compass readings.
In order for the compass to operate accurately in a particular zone,
it must be calibrated using the following procedure.
1. Determine your location on the worldwide magnetic variation
map on next page. Record your zone number.
2. Turn the ignition switch to ACC or ON position.
3. Push the ``Mode'' switch continuously for ®ve seconds until the
current zone entry number is displayed.
4. Press the ``Mode'' switch repeatedly until the desired zone num-
ber is displayed.
Once the desired zone number is displayed, stop pressing the
``Mode'' switch and the display will show compass direction after a
few seconds.
CORRECTION FUNCTIONS OF COMPASS
The direction display is equipped with automatic correction func-
tion. If the direction is not shown correctly, carry out initial correc-
tion.
INITIAL CORRECTION PROCEDURE FOR COMPASS
1. Pushing the ``Mode'' switch for about 10 seconds will enter the
initial correction mode. The direction bar starts blinking.
2. Turn the vehicle slowly in an open, safe place. The initial cor-
rection is completed in one or two turns.
NOTE:
In places where the terrestrial magnetism is extremely
disturbed, the initial correction may start automatically.
SEL065V
COMPASS AND THERMOMETER
Trouble Diagnoses (Cont'd)
EL-119

Electrical Components Inspection
FUEL WARNING LAMP SENSOR CHECK
+It will take a short time for the bulb to light.
NOTE: Inspection for sub fuel warning lamp sensor is the
same as for fuel warning lamp sensor.
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
+Check continuity using an ohmmeter.
+Diode is functioning properly if test results are as shown in the
®gure at left.
NOTE: Speci®cation 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.
+Diodes for warning lamps are built into the combination meter
printed circuit.
MEL828F
MEL425F
CEL520
CEL740
WARNING LAMPS
EL-134

System Description
The warning chime is combined with the smart entrance control unit.
Both the ignition key and light warning chime will not sound, when ignition switch in the ON or START posi-
tion. (When power supply exists at smart entrance control unit terminalj
12.)
IGNITION KEY WARNING CHIME
With the key in the ignition key cylinder, the ignition switch in the OFF or ACC position, and the driver's door
open, the warning chime will sound. A battery positive voltage is supplied
+from key switch terminalj
1
+to smart entrance control unit terminalj1.
Ground is supplied
+through driver side door switch
+to smart entrance control unit terminalj
7.
LIGHT WARNING CHIME
With ignition switch in the OFF or ACC position, driver's door open, and lighting switch in 1ST or 2ND position,
warning chime will sound. A battery positive voltage is supplied
+from lighting switch terminalj
12or daytime light control unit
+to smart entrance control unit terminalj
14.
Ground is supplied
+through driver side door switch
+to smart entrance control unit terminalj
7.
WARNING CHIME
EL-135

Electrical Components Inspection
HEADLAMP WIPER MOTOR CHECK
When wiper motor is locked, a protective circuit built into
wiper motor activates to stop wiper motor. If wiper motor will
not restart even after cause of problems has been eliminated,
turn ignition switch OFF and leave it off for approx. 1 to 3
minutes.
1. Turn headlamp wiper switch OFF.
2. Connect ohmmeter and check continuity.
Headlamp
wiper motorOhmmeter probe
Continuity
(+) (þ)
Stop positionj
1j4Ye s
j
1j2Ye s
j
1j3Ye s
j
3j5No
Removal and Installation
WIPER ARM
Tighten nut to secure wiper arm with wiper blade held below lower
stopper.
After installing wiper arm, position wiper blade on stopper upper
surface.
+Tighten headlamp wiper arm nut to the speci®ed torque.
: 2.3 - 3.0 Nzm (0.23 - 0.31 kg-m, 20.0 - 26.9 in-lb)
Washer Tube Layout
Check Valve
+A check valve is provided in the washer ¯uid line. Be careful not
to connect check valve to washer tube in the wrong direction.
CEL813
CEL814
CEL815
SEL411H
HEADLAMP WIPER AND WASHER
EL-154

System Description
The rear window defogger system is controlled by the smart entrance control unit. The rear window defogger
operates only for approximately 15 minutes.
Power is supplied at all times
+to rear window defogger relay terminalj
3
+through 15A fuse (No.43, located in the fuse and fusible link box) and
+to rear window defogger relay terminalj
6
+through 20A fuse (No.44, located in the fuse and fusible link box).
With the ignition switch in the ON or START position, power is supplied
+to the rear window defogger relay terminalj
1and
+to smart entrance control unit terminalj
12
+through 7.5A fuse [No.8, located in the fuse block (J/B)].
Ground is supplied to terminalj
2of the rear window defogger switch through body grounds.
When the rear window defogger switch is turned ON, ground is supplied
+through terminalj
1of the rear window defogger switch
+to smart entrance control unit terminalj
8.
Terminalj
9of the smart entrance control unit then supplies ground to the rear window defogger relay termi-
nalj
2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied
+through terminalsj
5andj7of the rear window defogger relay
+to the rear window defogger.
The rear window defogger has an independent ground.
With power and ground supplied, the rear window defogger ®laments heat and defog the rear window.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger
switch.
Power is supplied
+to terminalj
3of the rear window defogger switch
+from terminalj
5of the rear window defogger relay.
Terminalj
4of the rear window defogger switch is grounded through body grounds.
REAR WINDOW DEFOGGER
EL-158