1998 NISSAN PATROL power supply

MULTI-REMOTE CONTROL UNIT INSPECTION TABLE
Terminal
No.Connections ConditionVoltage (V)
(approximate
values)
1 Driver side door switch Driver side doorOpened 0
Closed 12
2 Door switch (all doors)One of doors is opened 0
All doors are closed 12
3 Power source (BAT) Ð 12
5 Ground Ð Ð
6 Driver side door unlock sensor Driver side doorLocked 5
Unlocked 0
7 Key switch (insert)Key is in ignition key cylinder 12
Key is not in ignition key cylinder 0
8 Accessory power supply Ignition switchOFF 0
ACC or ON 12
10Lock signal (to super lock control
unit)Remote controller LOCK button is pushed
(All doors are closed and key is not in ignition key cylinder.)0
Other than above condition 5
11Unlock signal (to super lock control
unit)Remote controller UNLOCK button is pushed
(Key is not in ignition key cylinder.)0
Other than above condition 5
12 Multi-remote control relay-1, 2Remote controller LOCK/UNLOCK button is pushed
(All doors are closed and key is not in ignition key cylinder.)0
Other than above condition 12
REMOTE CONTROLLER BATTERY CHECK
Remove battery and measure voltage across battery positive and
negative terminals,Åand@.
Measuring terminal
Standard value
Å@
Battery positive terminal
ÅBattery negative terminal
@2.5 - 3.0V
Note:
Remote controller does not function if battery is not set cor-
rectly.
SEL439V
SEL672U
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-238

DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
``CHAIN OF ECM-IMMU'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``CHAIN OF ECM-
IMMU'' displayed on CONSULT
screen.
OK
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between IMMU terminalj
8
and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse (No.
50:RD
engine,
49: TB engine,
located in the fuse and
fusible link box)
+Harness for open or
short between fuse and
IMMU connector
CHECK IGN SW. ON SIGNAL.
Check voltage between IMMU terminalj
7
and ground while ignition switch is ``ON''
position.
Battery voltage should exist.
OK
cNG
Check the following.
+10A fuse [No.
25,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
IMMU connector
CHECK GROUND CIRCUIT FOR IMMU.
Check continuity between IMMU terminal
j
4and ground.
Continuity should exist.
OK
cNG
Repair harness.
CHECK COMMUNICATION OPEN CIR-
CUIT.
Check continuity between IMMU terminal
j
1and ECM terminalj55(RD engine),j11
(TB engine).
Continuity should exist.
OK
cNG
Repair harness.
jA
SEL333U
SEL395VA
SEL396VA
SEL397VA
SEL497V
.
.
.
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-247

DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
``CHAIN OF ECM-IMMU'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``CHAIN OF ECM-
IMMU'' displayed on CONSULT
screen.
OK
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between terminalj
4of
IMMU and ground with CONSULT or
tester.
Voltage: Battery voltage
OK
cNG
Check the following:
+7.5A fuse (No.
50,
located in the fuse and
fusible link box)
+Harness for open or
short between fuse and
IMMU connector
CHECK IGN SW. ON SIGNAL.
Check voltage between terminalj
3of
IMMU and ground with CONSULT or
tester.
Voltage: Battery voltage
OK
cNG
Check the following:
+10A fuse [No.
25,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
IMMU connector
CHECK GROUND CIRCUIT FOR IMMU.
Check harness continuity between IMMU
terminalj
8,j9and ground.
Continuity should exist.
OK
cNG
Repair harness.
CHECK COMMUNICATION ON OPEN
CIRCUIT.
Check harness continuity between the fol-
lowing ECM terminal and IMMU terminal.
ECMj
55and IMMUj6
Continuity should exist.
OK
cNG
Repair harness.
jA
SEL333U
SEL867UD
SEL868UD
SEL499V
SEL500V
.
.
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-262

DIAGNOSTIC PROCEDURE 7
Self-diagnostic results:
``MINGLE NOISE'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS ``MINGLE NOISE'' dis-
played on CONSULT screen.b
Turn off or remove any possible noise sources.
Touch ``ERASE'' on CONSULT SELF-DIAGNOSTIC RESULTS
screen.
Start engine.
OKNG
END
DIAGNOSTIC PROCEDURE 8
``NATS SECURITY IND. DOES NOT LIGHT UP''
CHECK INDICATOR POWER SUPPLY
CIRCUIT.
Check voltage between security indicator
terminalj
1and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse [No.
24,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
security indicator
Check security indicator.
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(GASOLINE)''.
Does security indicator operate after
initialisation has been completed?
Ye s
cNo
Check harness for open or
short between NATS IMMU
and security indicator.
END
SEL384U
SEL385U
SEL552V
.
.
.
.
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-267

Use the chart below to ®nd out what each wiring diagram code
stands for.
Code Section Wiring Diagram Name
A/C,A HA Auto Air Conditioner
A/C CUT EC Air Conditioner Cut Control
A/C,M HA Manual Air Conditioner
A/T AT A/T
AAC/V EC IACV-AAC Valve
ABS BR Anti-lock Brake System
ACC/SW EC Accelerator Switch (FC)
ACL/SW EC Accelerator Position Switch
ADJRES EC Adjustment Resistor
APS EC Accelerator Position Sensor
ASCD EL Automatic Speed Control Device
AT/C EC A/T Control
AUDIO EL Audio
BACK/L EL Back-up Lamp
BCDD EC BCDD System
CD/CHG EL CD Auto Changer
CHARGE EL Charging System
CHIME EL Warning Chime
CHOKE EC Automatic Choke
CIGAR EL Cigarette Lighter
CKPS EC Crankshaft Position Sensor (OBD)
CLOCK EL Clock
CMPS EC Camshaft Position Sensor
COMPAS EL Compass and Thermometer
COOL/B HA Cool Box
COOL/F EC Cooling Fan Control
CORNER EL Cornering Lamp
CSPS EC Control Sleeve Position Sensor
D/LOCK EL Power Door Lock
DEICER EL Wiper Deicer
DEF EL Rear Window Defogger
DIFF/L PD Differential Lock Control System
DTRL ELHeadlamp Ð With Daytime Light
System
ECTS EC Engine Coolant Temperature Sensor
EGRC/V EC EGRC-Solenoid Valve
F/FOG EL Front Fog Lamp
F/PUMP EC Fuel Pump
FCUT EC Fuel Cut Solenoid Valve
FICD EC IACV-FICD Solenoid Valve
FTS EC Fuel Temperature SensorCode Section Wiring Diagram Name
GLOW EC Quick Glow System
GOVNR EC Electric Governor
H/AIM EL Headlamp Aiming Control System
H/LAMP EL Headlamp
HEATUP EC Heat up Switch
HLC EL Headlamp Cleaner
HORN EL Horn
HSEAT EL Heated Seat
IATS EC Intake Air Temperature Sensor
IC/FAN EC Charge Air Cooler Fan
IGN EC Ignition System
IGN/SG EC Ignition Signal
ILL EL Illumination
INJECT EC Injector
INT/L EL Spot, Vanity Mirror Lamps
KS EC Knock Sensor
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
MIRROR EL Door Mirror
MULTI EL Multi-remote Control System
NATS EL Nissan Anti-Theft System
NLS EC Needle Lift Sensor
P/ANT EL Power Antenna
PLA EC Partial Load Advance Control
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
PST/SW EC Power Steering Oil Pressure Switch
R/COOL HA Rear Cooler System
R/FOG EL Rear Fog Lamp
R/HEAT HA Rear Heater System
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
SEAT EL Power Seat
SROOF EL Sunroof
SRS RS Supplemental Restraint System
WIRING DIAGRAM CODES (CELL CODES)
EL-315