Check NISSAN PATROL 1998 Y61 / 5.G Electrical System Owner's Guide

INSPECTION/THERMAL TRANSMITTER
CHECK THERMAL TRANSMITTER.
Refer to ``THERMAL TRANSMITTER
CHECK'' (EL-115).
OK
cNG
Repair or replace.
CHECK HARNESS FOR OPEN OR
SHORT.
1. Disconnect combination connector and
thermal transmitter connector.
2. Check continuity between combination
meter terminalj
47and thermal transmit-
ter terminalj
1.
Continuity should exist.
3. Check continuity between combination
meter terminalj
47and ground.
Continuity should not exist.
OK
cNG
Repair harness or connec-
tor.
Thermal transmitter is OK.
Electrical Components Inspection
METER/GAUGE RESISTANCE CHECK
1. Disconnect FPC connector. Refer to ``Flexible Print Circuit
(FPC)'' (EL-109).
2. Check resistance between installation screws of meter/gauge.
Screws
Resistance
W
TachometerFuel/Temp.
gaugeSub fuel gauge
A - C A - C Ð Approx. 104 ( 5)
B - D B - C Ð Approx. 134 ( 5)
Ð Ð A - C Approx. 174 ( 5)
Ð Ð B - C Approx. 100 ( 5)
SEL426V
CEL736
.
.
METER AND GAUGES
Trouble Diagnoses (Cont'd)
EL-114

FUEL TANK GAUGE UNIT CHECK
+For removal, refer to FE section.
Check the resistance between terminalsj
1andj2.
Ohmmeter
Float position
mm (in)Resistance value
(W)
(+) (þ)
j
1j2
*1 Full 60 (2.36) Approx.4-6
*2 1/2 179 (7.05) 32 - 33
*3 Empty 270 (10.63) 80 - 83
*1 and *3: When ¯oat rod is in contact *with stopper.
THERMAL TRANSMITTER CHECK
Check the resistance between the terminals of thermal transmitter
and body ground.
Water temperature Resistance (W)
60ÉC (140ÉF) Approx. 170 - 210
100ÉC (212ÉF) Approx. 47 - 53
VEHICLE SPEED SENSOR CHECK
1. Remove vehicle speed sensor from transmission.
2. Turn vehicle speed sensor pinion quickly and measure voltage
between terminalsj
2andj1.
CEL737
MEL424F
CEL739
METER AND GAUGES
Electrical Components Inspection (Cont'd)
EL-115

Trouble Diagnoses
PRELIMINARY CHECK FOR THERMOMETER
Turn the ignition key switch to the ``ACC''
position.
Cool down the ambient air temperature
sensor with water or ice, so that the indi-
cated temperature falls.
Does the indicated temperature fall?
Ye s
cNo
The system is malfunction-
ing..1
Leave the vehicle for 10 minutes, so that
the indicated temperature rises.
With the ignition key in the ``ACC''
position, disconnect and reconnect the
ambient air temperature sensor connector.
Does the indicated temperature rise?
Ye s
cNo
The system is malfunction-
ing..1
The system is OK.
.1: Check the system following ``INSPECTION/COMPASS AND THERMOM-
ETER''.
INSPECTION/COMPASS AND THERMOMETER
Symptom Possible causes Repair order
No display at all 1. 7.5A fuse
2. Ground circuit
3. Compass and thermometer1. Check 7.5A fuse [No.
9, located in fuse block (J/B)].
Turn the ignition switch ON and verify that battery positive
voltage is at terminalj
2of compass and thermometer.
2. Check ground circuit for compass and thermometer.
3. Replace compass and thermometer.
Forward direction indication
slips off the mark or incorrect.1. In manual correction mode
(Bar and display vanish.)
2. Zone variation change is not
done.1. Drive the vehicle and turn at an angle of 90É.
2. Perform the zone variation change.
Compass reading remains
unchanged.1. Vehicle speed sensor is not
entered.
2. Compass and thermometer1. Check harness for open or short between combination meter
terminalj
26and compass and thermometer terminalj8.
2. Replace compass and thermometer.
Displays wrong temperature
when ambient temperature is
between þ30ÉC (þ20ÉF) and
55ÉC (130ÉF). (See NOTE)1. Check operation
2. Ambient air temperature
sensor circuit
3. Vehicle speed sensor is not
entered.
4. Ambient air temperature
sensor
5. Compass and thermometer1. Perform preliminary check shown below.
2. Check harness for open or short between ambient air tem-
perature sensor and compass and thermometer.
3. Check harness for open or short between combination meter
terminalj
26and compass and thermometer terminalj8.
4. Replace ambient air temperature sensor.
5. Replace compass and thermometer.
NOTE:
+When the outside temperature is between 55ÉC (130ÉF) and 70ÉC (158ÉF), the display shows 55ÉC
(130ÉF). When the outside temperature is lower than þ30ÉC (þ20ÉF) or higher than 70ÉC (158ÉF), the
display shows only ``- - -''.
+The indicated temperature on the thermometer is not readily affected by engine heat. It changes
only when one of the following conditions (shown on next page) is present.
.
.
.
.
.
.
COMPASS AND THERMOMETER
EL-118

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

Trouble Diagnoses
SYMPTOM CHART
REFERENCE PAGE EL-138 EL-139 EL-139
SYMPTOM
DIAGNOSTIC PROCEDURE 1
(Lighting switch input signal check)
DIAGNOSTIC PROCEDURE 2
(Key switch input signal check)
DIAGNOSTIC PROCEDURE 3
Light warning chime does not acti-
vate.XX
Ignition key warning chime does not
activate.XX
All warning chimes do not activate.X
DIAGNOSTIC PROCEDURE 1
(Lighting switch input signal check)
CHECK LIGHTING SWITCH INPUT SIG-
NAL.
Check voltage between control unit termi-
nalj
14and ground.
OK
cNG
Check the following.
+7.5A fuse (No.
42,
located in the fuse and
fusible link box) for LHD
models
+Harness for open or
short between control
unit and lighting switch/
daytime light control unit
Go to DIAGNOSTIC PROCEDURE 3.
Condition of lighting
switchVoltage [V]
1ST or 2ND Approx. 12
OFF 0
SEL851UB
.
WARNING CHIME
EL-138

DIAGNOSTIC PROCEDURE 2
(Key switch input signal check)
CHECK KEY SWITCH INPUT SIGNAL.
Check voltage between control unit termi-
nalj
1and ground.
OK
cNG
Check the following.
+Key switch
Refer to ``Electrical Com-
ponents Inspection'' (EL-
140).
+7.5A fuse [No.
24,
located in fuse block
(J/B)]
+Harness for open or
short between key
switch and fuse
+Harness for open or
short between control
unit and key switch
Go to DIAGNOSTIC PROCEDURE 3.
Condition of key switch Voltage [V]
Key is inserted. Approx. 12
Key is withdrawn. 0
DIAGNOSTIC PROCEDURE 3
CHECK POWER SUPPLY CIRCUIT FOR
CONTROL UNIT.
Check voltage between control unit termi-
nalsj
11,j12and ground.
OK
cNG
Check the following.
+
M92circuit breaker
+7.5A fuse [No.8,
located in the fuse block
(J/B)]
+Harness for open or
short
CHECK GROUND CIRCUIT FOR CON-
TROL UNIT.
Check continuity between control unit ter-
minalj
18and ground.
Continuity should exist.
OK
cNG
Repair harness or connec-
tors.
CHECK DOOR SWITCH INPUT SIGNAL.
Check voltage between control unit termi-
nalj
7and ground.
OK
cNG
Check the following.
+Driver side door switch
Refer to ``Electrical Com-
ponents Inspection'' (EL-
140).
+Door switch ground cir-
cuit
+Harness for open or
short between control
unit and door switch
Replace control unit.
Terminals Ignition switch position
Å@OFF ACC ON
j
11Ground Approx. 12V
j
12Ground 0V 0V Approx. 12V
Condition of driver's door Voltage [V]
Driver side door is closed. Approx. 12
Driver side door is open. 0
SEL852UB
SEL853UB
SEL854UB
SEL855UB
.
.
.
.
WARNING CHIME
Trouble Diagnoses (Cont'd)
EL-139

Electrical Components Inspection
KEY SWITCH (insert)
Check continuity between terminals when key is inserted in ignition
key cylinder and key is removed from ignition key cylinder.
Terminal No. Condition Continuity
j
1-j2Key is inserted. Yes
Key is removed. No
DRIVER SIDE DOOR SWITCH
Check continuity between terminals when door switch is pushed
and released.
Terminal No. Condition Continuity
j
1-j3Door switch is pushed. No
Door switch is released. Yes
SEL462V
SEL463V
WARNING CHIME
EL-140

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.
CEL743
SEL411H
REAR WIPER AND WASHER
EL-152

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

Trouble Diagnoses
SYMPTOM: Rear window defogger does not activate, or does
not go off after activating.
CHECK REAR WINDOW DEFOGGER
OUTPUT SIGNAL.
1. Turn ignition switch to ON position.
2. Check voltage between control unit har-
ness terminalsj
9and ground.
NG
cOK
Check the following.
+Rear window defogger
relay
(Refer to EL-164.)
+Rear window defogger
circuit
+Rear window defogger
®lament
(Refer to EL-164.)
1. Disconnect control unit connector.
2. Turn ignition switch to ON position.
3. Check voltage between control unit ter-
minalj
9and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse [No.
8,
located in the fuse block
(J/B)]
+Rear window defogger
relay
+Harness for open or
short between control
unit and fuse
CHECK REAR WINDOW DEFOGGER
SWITCH INPUT SIGNAL.
Check continuity between control unit ter-
minalj
8and ground.
OK
cNG
Check the following.
+Rear window defogger
switch
(Refer to EL-164.)
+Harness for open or
short between control
unit and rear window
defogger switch
+Rear window defogger
switch ground circuit
CHECK IGNITION INPUT SIGNAL.
Check voltage between control unit termi-
nalj
12and ground.
OK
cNG
Check the following.
+7.5A fuse [No.
8located in the fuse block
(J/B)]
+Harness for open or
short between control
unit and fuse
CHECK CONTROL UNIT GROUND CIR-
CUIT.
Check continuity between control unit ter-
minalj
18and ground.
Continuity should exist.
OK
cNG
Repair harness or connec-
tors.
Replace control unit.
Condition Voltage [V]
Rear window defogger
switch is released.Approx. 12
Rear window defogger
switch is pushed.0
Condition of
defogger switchContinuity
Rear window defogger
switch is pushed.Ye s
Rear window defogger
switch is released.No
Condition Voltage [V]
Ignition switch is ``ON''. Approx. 12
Ignition switch is ``OFF''. 0
SEL856UA
SEL857UA
SEL858UA
SEL859UA
SEL854UC
.
.
.
.
.
REAR WINDOW DEFOGGER
EL-163