2000 NISSAN PATROL fuse

Trouble Diagnoses
SYMPTOM CHART
REFERENCE PAGE EL-1094 EL-1095 EL-1095 EL-1096
SYMPTOM
DIAGNOSTIC PROCEDURE 1
(Lighting switch input signal check)
DIAGNOSTIC PROCEDURE 2
(Key switch input signal check)
DIAGNOSTIC PROCEDURE 3
(Door unlock sensor check)
DIAGNOSTIC PROCEDURE 4
Light warning chime does not acti-
vate.XX
Ignition key warning chime does not
activate.XXX
All warning chimes do not activate.X
DIAGNOSTIC PROCEDURE 1
(Lighting switch input signal check)
CHECK LIGHTING SWITCH INPUT SIG-
NAL.
Check voltage between super lock control
unit terminal
V19and ground.
OK
cNG
Check the following.
+Harness for open or
short between super
lock control unit and
combination switch
(RHD models)
+Harness for open or
short between super
lock control unit and
7.5A fuse (LHD models)
Go to DIAGNOSTIC PROCEDURE 4.
Condition of lighting
switchVoltage [V]
1ST or 2ND Approx. 12
OFF 0
SEL122X
.
WARNING CHIME
EL-1094

DIAGNOSTIC PROCEDURE 2
(Key switch input signal check)
CHECK KEY SWITCH INPUT SIGNAL.
Check voltage between super lock control
unit terminal
V18and ground.
OK
cNG
Check the following.
+Key switch
Refer to ªElectrical Com-
ponents Inspectionº (EL-
1097).
+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 super
lock control unit and key
switch
Go to DIAGNOSTIC PROCEDURE 4.
Condition of key switch Voltage [V]
Key is inserted. Approx. 12
Key is withdrawn. 0
DIAGNOSTIC PROCEDURE 3
(Door unlock sensor check)
CHECK DOOR UNLOCK SENSOR
INPUT SIGNAL.
Check voltage between super lock control
unit terminal
V28and ground.
OK
cNG
Check the following.
+Door unlock sensor
Refer to ªElectrical Com-
ponents Inspectionº (EL-
1097).
+Harness for open or
short between super
lock control unit and
door unlock sensor
Go to DIAGNOSTIC PROCEDURE 4.
Terminals
ConditionVoltage
[V]
Å@
V28GroundLocked Approx. 5
Unlocked 0
SEL123X
SEL175X
.
.
WARNING CHIME
Trouble Diagnoses (Cont'd)
EL-1095

DIAGNOSTIC PROCEDURE 4
CHECK POWER SUPPLY CIRCUIT FOR
SUPER LOCK CONTROL UNIT.
Check voltage between super lock control
unit terminals
V1,V17and ground.
OK
cNG
Check the following.
+10A fuse [No.
25,
located in the fuse block
(J/B)]
+7.5A fuse [No.
24,
located in the fuse block
(J/B)]
+Harness for open or
short between super
lock control unit and
fuse
CHECK GROUND CIRCUIT FOR SUPER
LOCK CONTROL UNIT.
Check continuity between super lock con-
trol unit terminal
V16and ground.
Continuity should exist.
OK
cNG
Repair harness or connec-
tors.
CHECK DOOR SWITCH INPUT SIGNAL.
Check voltage between super lock control
unit terminal
V30and ground.
OK
cNG
Check the following.
+Driver side door switch
Refer to ªElectrical Com-
ponents Inspectionº (EL-
1097).
+Door switch ground cir-
cuit
+Harness for open or
short between super
lock control unit and
door switch
Replace super lock control unit.
Terminals Ignition switch position
Å@OFF ACC ON
V1Ground Approx. 12V
V17Ground 0V 0V Approx. 12V
Condition of driver's door Voltage [V]
Driver side door is closed. Approx. 12
Driver side door is open. 0
SEL124X
SEL125X
SEL126X
.
.
.
WARNING CHIME
Trouble Diagnoses (Cont'd)
EL-1096

System Description
The rear window defogger system is controlled by the super lock control unit. The rear window defogger
operates only for approximately 15 minutes.
Power is supplied at all times
+to rear window defogger relay terminal
V3
+through 15A fuse (No.43, located in the fuse and fusible link box),
+to rear window defogger relay terminal
V6
+through 20A fuse (No.44, located in the fuse and fusible link box) and
+to super lock control unit terminal
V1
+through 7.5A fuse [No.24, located in the fuse block (J/B)].
With the ignition switch in the ON or START position, power is supplied
+to the rear window defogger relay terminal
V1
+through 7.5A fuse [No.8, located in the fuse block (J/B)] and
+to super lock control unit terminal
V17
+through 10A fuse [No.25, located in the fuse block (J/B)].
Ground is supplied to terminal
V2of the rear window defogger switch through body grounds.
When the rear window defogger switch is turned ON, ground is supplied
+through terminal
V1of the rear window defogger switch
+to super lock control unit terminal
V35.
Terminal
V27of the super lock control unit then supplies ground to the rear window defogger relay terminal
V2.
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied
+through terminals
V5andV7of the rear window defogger relay
+to the rear window defogger and door mirror defogger (with door mirror defogger).
The rear window defogger has an independent ground.
With power and ground supplied, the rear window defogger filaments 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 terminal
V3of the rear window defogger switch
+from terminal
V5of the rear window defogger relay.
Terminal
V4of the rear window defogger switch is grounded through body grounds.
REAR WINDOW DEFOGGER
EL-1101

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 super lock con-
trol unit harness terminal
V27and
ground.
NG
cOK
Check the following.
+Rear window defogger
relay
(Refer to EL-1107.)
+Rear window defogger
circuit
+Rear window defogger
filament
[Refer to ªFilament
Checkº in Service
Manual (SM7E-
2Y61G1).]
1. Disconnect super lock control unit con-
nector.
2. Turn ignition switch to ON position.
3. Check voltage between super lock con-
trol unit terminal
V27and 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 super
lock control unit and
rear window defogger
relay
+Harness for open or
short between rear win-
dow defogger relay and
fuse
CHECK REAR WINDOW DEFOGGER
SWITCH INPUT SIGNAL.
Check continuity between super lock con-
trol unit terminal
V35and ground.
OK
cNG
Check the following.
+Rear window defogger
switch
(Refer to EL-1107.)
+Harness for open or
short between super
lock control unit and
rear window defogger
switch
+Rear window defogger
switch ground circuit
CHECK IGNITION INPUT SIGNAL.
Check voltage between super lock control
unit terminal
V17and ground.
OK
cNG
Check the following.
+10A fuse [No.
25located in the fuse block
(J/B)]
+Harness for open or
short between super
lock control unit and
fuse
CHECK SUPER LOCK CONTROL UNIT
GROUND CIRCUIT.
Check continuity between super lock con-
trol unit terminal
V16and ground.
Continuity should exist.
OK
cNG
Repair harness or connec-
tors.
Replace super lock 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.Yes
Rear window defogger
switch is released.No
Condition Voltage [V]
Ignition switch is ªONº. Approx. 12
Ignition switch is ªOFFº. 0
SEL127X
SEL128X
SEL129X
SEL130X
SEL131X
.
.
.
.
.
REAR WINDOW DEFOGGER
EL-1106

Trouble Diagnoses
Symptom Possible cause Repair order
None of the power windows can be
operated using any switch.1. 7.5A fuse, 40A fusible link and
M123circuit breaker
2. Power window main switch
ground circuit
3. Power window main switch1. Check 7.5A fuse [No.
8, located in fuse block (J/B)],
40A fusible link (letter
e, located in fuse and fusible
link box) and
M123circuit breaker. Turn ignition switch
ªONº and verify battery positive voltage is present at
terminals
V5andV13of power window main switch.
2. Check ground circuit of power window main switch.
3. Check power window main switch.
Driver side power window cannot be
operated but other windows can be
operated.1. Driver side power window regula-
tor circuit
2. Driver side power window regula-
tor
3. Power window main switch1. Check harness between power window main switch
and power window regulator for open or short circuit.
2. Check driver side power window regulator.
3. Check power window main switch.
Passenger power window cannot be
operated.1.
M92circuit breaker
2. Power supply of power window
relay
3. Power window relay ground cir-
cuit
4. Power window relay
5. Power window sub-switches
6. Passenger side power window
regulators
7. Power window main switch
8. Power window circuit1. CheckM92circuit breaker. Verify battery positive volt-
age is present at terminal
V3of power window relay.
2. Check harness between 7.5A fuse and power window
relay.
3. Check power window ground circuit.
4. Check power window relay.
5. Check power window sub-switch.
6. Check passenger side power window regulator.
7. Check power window main switch.
8-1. Check harness between power window relay and
power window sub-switch.
8-2. Check harnesses between power window main
switch and power window sub-switch for open/
short circuit.
8-3. Check harnesses between power window sub-
switch and power window regulator for open/
short circuit.
Passenger power window cannot be
operated using power window main
switch but can be operated by power
window sub-switch.1. Power window main switch 1. Check power window main switch.
Driver side power window auto func-
tion cannot be operated properly.1. Power window main switch
2. Encoder and limit switch1. Check power window main switch.
2. Check encoder and limit switch. (EL-1123)
Timer control for supplying power
after turning ignition switch to OFF
does not operate properly.1. Driver side door switch circuit.
2. Driver side door switch
3. Ignition switch ON signal circuit
4. Power window main switch1-1. Check harness between driver side door switch and
power window main switch.
1-2. Check ground circuit of driver side door switch.
2. Check driver side door switch.
3. Check ignition switch ON signal circuit to power win-
dow main switch.
4. Check power window main switch.
POWER WINDOW
EL-1122

DIAGNOSTIC PROCEDURE 8
(Key switch check)
CHECK KEY SWITCH INPUT SIGNAL.
Check voltage between super lock control
unit terminal
V18and ground.
Refer to wiring diagram in EL-1128
(LHD), EL-1133 (RHD).
NG
cOK
Key switch is OK.
CHECK KEY SWITCH POWER SUPPLY.
1. Disconnect key switch connector.
2. Check voltage between key switch har-
ness terminal
V2and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse [No.
24,
located in fuse block
(J/B)]
+Harness for open or
short between key
switch and fuse
CHECK KEY SWITCH.
Check continuity between key switch ter-
minals.
OK
cNG
Replace key switch.
Check harness for open or short between
control unit and key switch.
Condition of key switch Voltage [V]
Key is inserted. Approx. 12
Key is withdrawn. 0
Terminals Condition Continuity
V1-V2
Key is
inserted.Yes
Key is with-
drawn.No
DIAGNOSTIC PROCEDURE 9
(Ignition switch ªONº circuit check)
Terminals Ignition switch position
Å@OFF ACC ON
V17Ground 0V 0VBattery
voltage
If NG, check the following.
+10A fuse [No.
25, located in the fuse block (J/B)]
+Harness for open or short
SEL144X
SEL197X
SEL015WB
SEL145X
.
.
.
POWER DOOR LOCK Ð Super Lock Ð
Trouble Diagnoses (Cont'd)
EL-1148

Input/Output Operation Signal
SUPER LOCK CONTROL UNIT INSPECTION TABLE
Terminal
No.Wire
colorConnections Operated conditionVoltage
(Approximate
values)
1 R Power source (Fuse) Ð 12V
3 L/Y Super lock actuatorsKey inserted into front door key cylinder, turning it to
UNLOCK
(Key is not in ignition key cylinder.)5V
4 L/R Passenger door lock actuator Door lock & unlock switch Unlocked 12V
6 L/W Super lock actuatorsKey inserted into front door key cylinder, turning it to
LOCK
(When super lock is in release condition)12V
10 W/R Power source (C/B) Ð 12V
11 L/R Driver door lock actuator Door lock & unlock switch Free 0V
14 L Door lock actuators Door lock & unlock switchFree 0V
Locked 12V
16 B Ground Ð Ð
17 B/W Ignition switch (ON) Ignition key is in ªONº position 12V
18 BR Ignition key switch (Insert) key inserted®key removed from IGN key cylinder 12V®0V
19 L/B Lighting switch (1ST) 1ST, 2ND positions: ON®OFF 12V®0V
20 P Door lock/unlock switches Neutral®Locked 5V®0V
23 LG Door lock/unlock switches Neutral®Unlocked 5V®0V
24 R/Y Door key cylinder lock switch OFF (Neutral)®ON (Locked) 5V®0V
25 Y/G Door key cylinder unlock switch OFF (Neutral)®ON (Unlocked) 5V®0V
26 R/W Interior room lampWhen interior lamp is operated with
driver's door is unlocked.
(Lamp switch in ªDOORº position)Locked 12V
Unlocked 0V
27 B/W Rear window defogger relay OFF®ON (Ignition key is in ªONº position) 12V®0V
28 L/W Driver door unlock sensor Driver door: Locked®Unlocked 12V®0V
29 PU Passenger door unlock sensor Passenger and back door: Locked®Unlocked 5V®0V
30 R/Y Driver door switch OFF (Closed)®ON (Open) 12V®0V
31 R/B All door switches OFF (Closed)®ON (Open) 12V®0V
32 B/RLock signal (from multi-remote con-
trol unit)Remove controller LOCK button is pushed
(Key is not in ignition key cylinder.)0V
Other than above condition 5V
33 B/YUnlock signal (from multi-remote
control unit)Remove controller UNLOCK button is pushed
(When super lock is in release condition)0V
Other than above condition 12V
34 R Anti-theft cancel signalWhen super lock is in set condition with driver and
passenger door is locked, insert the key into ignition
key cylinder and turn it to ON.5V
35 SB Rear window defogger switch OFF®ON 5V®0V
SUPER LOCK CONTROL UNIT
EL-1162