2000 NISSAN PATROL Defogger

Wiring Diagram Ð DEF Ð/RHD Models
TEL251M
REAR WINDOW DEFOGGER
EL-1104

TEL252M
REAR WINDOW DEFOGGER
Wiring Diagram Ð DEF Ð/RHD Models
(Cont'd)
EL-1105

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

Electrical Components Inspection
REAR WINDOW DEFOGGER RELAY
Check continuity between terminalsV3andV5,V6andV7.
Condition Continuity
12V direct current supply between
terminals
V1andV2Yes
No current supply No
REAR WINDOW DEFOGGER SWITCH
Check continuity between terminals when rear window defogger
switch is pushed and released.
Terminals Condition Continuity
V1-V2
Rear window defogger
switch is pushedYes
Rear window defogger
switch is releasedNo
SEC202B
SEL430TG
REAR WINDOW DEFOGGER
EL-1107

Description
The following systems are controlled by the super lock control unit.
+Warning chime
+Rear window defogger timer
+Power door lock (super lock)
+Interior room lamp timer
For detailed description and wiring diagrams, refer to the relevant pages for the each system. The control
unit receives data from the switches, control units and sensors to control their corresponding system relays
and actuators.
System Input Output
Power door lock (super lock)Door switches
Key switch (Insert)
Door key cylinder switch (lock/unlock)
Ignition switch (ON)
Door unlock sensors
Multi-remote control signals (lock/unlock)
NATS IMMU signal (Anti-theft cancel)Door lock actuator
Super lock actuator
Warning chimeKey switch (Insert)
Ignition switch (ON)
Lighting switch (1st and 2nd)
Front door switch (Driver side)
Door unlock sensor (Driver side)Warning chime
Rear window defogger timerIgnition switch (ON)
Rear window defogger switchRear window defogger relay
Interior room lamp timerDoor switches
Door unlock sensor (Driver side)
Ignition switch (ON)
Key switch (Insert)Interior lamp
SUPER LOCK CONTROL UNIT
EL-1159

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

Back Door Harness and Rear Window
Defogger Harness
CEL251A
HARNESS LAYOUT
EL-1226

Wiring Diagram Codes (Cell Codes)
Use the chart below to find out what each wiring diagram code
stands for.
Refer to the wiring diagram code in the alphabetical index to find
the location (Page number) of each wiring diagram.
Code Section Wiring Diagram Name
A/C,A HA Auto Air Conditioner
A/C,M HA Manual Air Conditioner
A/CCUT EC Air Conditioner Control
A/T AT A/T
ABS BR Anti-lock Brake System
ACC/SW EC Accelerator Switch (FC)
ACL/SW EC Accelerator Position Switch
APS EC Accelerator Position Sensor
ASCD EL Automatic Speed Control Device
AT/C EC A/T Control
BACK/L EL Back-up Lamp
BCDD EC BCDD System
BOOST EC Turbo Charger Boost Sensor
BRK/SW EC Brake Switch Signal
CHARGE EL Charging System
CHIME EL Warning Chime
CHOKE EC Automatic Choke
CKPS EC Crankshaft Position Sensor (OBD)
COOL/B HA Cool Box
COOL/F EC Cooling Fan Control
CORNER EL Cornering Lamp
DEF EL Rear Window Defogger
DIFF/L PD Differential Lock Control System
DTRL ELHeadlamp Ð With Daytime Light
System
ECMRLY EC ECM Relay
ECTS EC Engine Coolant Temperature Sensor
EGVC/V EC EGR Volume Control Valve
EXH ECExhaust Gas Control Valve Control
Solenoid Valve
F/FOG EL Front Fog Lamp
F/PUMP EC Fuel Pump
FCUT EC Fuel Cut System
FICD EC IACV-FICD Solenoid Valve
FIPOT EC ISC-FI POT
FPCM EC Fuel Pump Control Module
GLOW EC Quick Glow System
HEATER HA Heater System
HEATUP EC Heat up SwitchCode Section Wiring Diagram Name
HLC EL Headlamp Wiper and Washer
HORN EL Horn
IGN EC Ignition Control System
ILL EL Illumination
INJPMP ECElectronic Control Fuel Injection
Pump
INT/V ECIntake Air Control Valve Control
Solenoid Valve
MAFS EC Mass Air Flow Sensor
MAIN ECMain Power Supply and Ground Cir-
cuit
METER ELSpeedometer, Tachometer, Temp.,
Oil and Fuel Gauges
MIL/DL EC Mil and Data Link Connectors
MULTI EL Multi-remote Control System
NATS EL Nissan Anti-Theft System
P/ANT EL Power Antenna
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
R/COOL HA Rear Cooler System
R/FOG EL Rear Fog Lamp
R/HEAT HA Rear Heater System
REMOTE EL Audio (Remote Control Switch)
ROOM/L EL Interior Room Lamp
S/LOCK EL Power Door Lock Ð Super Lock
S/SIG EC Start Signal
S/TANK FE Sub Fuel Tank Control System
SHIFT AT A/T Shift Lock System
SRS RS Supplemental Restraint System
STAB RA Stabilizer Release Device
START EL Starting System
STOP/L EL Stop Lamp
SWL/V ECSwirl Control Valve Control Solenoid
Valve
TAIL/L EL Parking, License and Tail Lamps
TURN ELTurn Signal and Hazard Warning
Lamps
VSS EC Vehicle Speed Sensor
WARN EL Warning Lamps
WIRING DIAGRAM CODES (CELL CODES)
EL-1227