1998 NISSAN PICK-UP Repair Manual

Trouble Diagnoses
SYMPTOM CHART
Symptom Possible cause Diagnoses/service order
No doors can be locked or un-
locked by remote control opera-
tion. (See NOTE.)1. Remote controller battery
2. Key switch (insert)
3. Door switch
4. Power supply circuit for multi-re-
mote control unit
5. Ground circuit for multi-remote
control unit
6. Remote controller1. Check remote controller battery. Refer to EL-180.
2. Check key switch (insert) signal at terminal
V7of
multi-remote control unit.
3. Check door switch signal at terminals
V1andV2
of multi-remote control unit.
4. Make sure battery voltage is present at terminal
V3of multi-remote control unit.
5. Check continuity between terminal
V5of multi-remote
control unit and ground.
6. Replace remote controller. Refer to EL-182.
Driver's door cannot be locked or
unlocked by remote controller
operation.1. Driver side door lock actuator cir-
cuit1. Check driver side door lock actuator circuit. Refer to
EL-181.
Doors other than driver side cannot
be locked or unlocked by remote
control operation.
(If the power door lock system does
not operate correctly, check power
door lock system. Refer to EL-169.)1. Lock/unlock signal to smart
entrance control unit
lWhen locking is not possible:
Check continuity between terminal
V10of multi-remote
control unit and terminal
V5of door lock timer.
lWhen unlocking is not possible:
Check continuity between terminal
V11of multi-remote
control unit and terminal
V8of door lock timer.
Hazard reminder does not operate
properly.1. 10A fuse
2. Multi-remote control relay-1 and
2
3. Hazard reminder circuit1. Check 10A fuse (No.
5 , located in the fuse block).
2. Check multi-remote control relay-1 and 2.
3. Check harness for open or short between relays and
multi-remote control unit terminal
V12.
The new ID of remote controller
cannot be entered.1. Remote controller battery
2. Key switch (insert)
3. Door switch
4. Driver's door unlock sensor
5. Accessory power supply circuit
for multi-remote control unit
6. Remote controller1. Check remote controller battery. Refer to EL-180.
2. Check key switch (insert) signal at terminal
V7of
multi-remote control unit.
3. Check door switch signal at terminals
V1andV2of
multi-remote control unit.
4. Check driver's door unlock sensor signal at terminal
V6of multi-remote control unit.
5. Make sure battery voltage is present at terminal
V8of
multi-remote control unit while ignition switch is in ACC
position.
6. Replace remote controller. Refer to EL-182.
Refer to ``MULTI-REMOTE CONTROL UNIT INSPECTION TABLE'' on next page to check the control unit
signals.
NOTE:
lThe unlock operation of multi-remote control system does not activate with key inserted in the ignition
key cylinder.
lThe lock operation of multi-remote controller does not activate with the key inserted ignition key cylin-
der or if one of the door is opened.
MULTI-REMOTE CONTROL SYSTEM/FOR EUROPE
EL-179

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
10 Lock signalRemote controller LOCK button is pushed
(All doors are closed and key is not in ignition key cylinder.)0
Other than above condition 12
11 Unlock signalRemote controller UNLOCK button is pushed
(Key is not in ignition key cylinder.)0
Other than above condition 12
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
Å
Battery negative terminal
@2.5 - 3.0V
Note:
Remote controller does not function if battery is not set
correctly.
SEL439V
SEL672U
MULTI-REMOTE CONTROL SYSTEM/FOR EUROPE
Trouble Diagnoses (Cont'd)
EL-180

DRIVER SIDE DOOR LOCK ACTUATOR CHECK
CHECK MULTI-REMOTE CONTROL
RELAY-3, 4.
While applying battery voltage to relay
terminals, insert fuse into the circuit.
OK
cNG
Replace the relay.
CHECK POWER SUPPLY FOR THE
RELAYS.
Check voltage between multi-remote con-
trol relay-3, 4 terminal
V2,V5and
ground.
Battery voltage should exist.
OK
cNG
Check the following.
l30A fuse (No.b, located
in the fusible link and fuse
box).
lCheck harness for open or
short between fuse and
relay.
CHECK GROUND CIRCUIT FOR THE
RELAYS.
Check continuity between multi-remote
control relay-3, 4 terminal
V4and
ground.
Continuity should exist.
OK
cNG
Repair harness.
CHECK LOCK/UNLOCK SIGNAL FOR
THE RELAYS.
Check voltage between multi-remote con-
trol relay-3, 4 terminal
V1and ground.
5V should exist.
OK
cNG
Check harness for open or
short between multi-re-
mote control relay and
multi-remote control unit.
CHECK DOOR LOCK ACTUATOR CIR-
CUIT.
1. Connect the relays.
2. Disconnect driver side door lock actua-
tor.
3. Check continuity between driver side
door lock actuator and relays.
Continuity should exist.
OK
cNG
Check harness for open or
short between multi-re-
mote control relays and
door lock actuator.
Replace door lock actuator.
conditionContinuity existence
between terminals
V3andV4V3andV5
Battery
voltage not
applied
between
each
terminal
V1andV2Yes No
Battery
voltage
applied
between
each
terminal
V1andV2No Yes
SEL639V
SEL640V
SEL641V
SEL642V
SEL643V
.Door lock actuator.driver side
.
.
.
.
.
MULTI-REMOTE CONTROL SYSTEM/FOR EUROPE
Trouble Diagnoses (Cont'd)
EL-181

ID Code Entry Procedure
Note:
A maximum of four remote controllers can be entered. Any attempt to enter a remote controller will
erase all ID codes previously entered. Therefore, be sure to receive all remote controllers from the
vehicle owner when any ID code entry is performed.
Enter the identity (ID) code manually when:
lremote controller or control unit is replaced.
lan additional remote controller is activated.
To enter the ID code, follow the procedures below.
PROCEDURE
Close all doors and lock driver side door.
Insert and remove the key from the ignition more than seven times within 10 sec-
onds.
Turn ignition key switch to ``ACC'' position. (The hazard warning lamps will then
flash twice.)
Turn ignition key switch to ``OFF'' and remove the key from the ignition.
Push any button on the new remote controller once. (The hazard warning lamps will
then flash twice.)
At this time, the new ID code is entered and all previous ID memory is com-
pletely erased.
b
Do you want to enter any additional remote controller ID codes?
A maximum four ID codes may be entered. (After 4th ID code is entered, the
registration mode is ended.)
No Yes
ADDITIONAL ID CODE ENTRY
Release the door lock, then lock again
with driver side knob lock switch.
Open driver side door.
END.
After entering the identity (ID) code, check the operation of multi-remote con-
trol system.
NOTE:
lIf you need to activate more than two additional new remote controllers, repeat the procedure
``Additional ID code entry'' for each new remote controller.
lAny ID codes cannot be entered after termination of the ``setting mode''.
.
.
.
.
.
.
.
.
MULTI-REMOTE CONTROL SYSTEM/FOR EUROPE
EL-182

Component Parts and Harness Connector
Location
System Description
NATS has the following immobiliser functions:
lSince only NATS ignition keys, whose IDs. have been registered into the ECM and IMMU of NATS, allow
the engine to run, operation of a stolen vehicle without a NATS registered key is prevented by NATS.
That is to say, NATS will immobilize the engine if someone tries to start it without the registered key of
NATS.
lBoth of the originally supplied ignition key IDs have been NATS registered.
If requested by the vehicle owner, a maximum of four key IDs can be registered into the NATS compo-
nents.
lThe NATS security indicator (NATS security ind.) blinks when the ignition switch is in ``OFF'' or ``ACC''
position. Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.
lWhen NATS detects trouble, the malfunction indicator lamp (MIL) blinks.
lNATS trouble diagnoses, system initialisation and additional registration of other NATS ignition key IDs
must be carried out using CONSULT hardware and CONSULT NATS software.
When NATS initialisation has been completed, the ID of the inserted ignition key is automatically NATS
registered. Then, if necessary, additional registration of other NATS ignition key IDs can be carried out.
Regarding the procedures of NATS initialisation and NATS ignition key ID registration, refer to CONSULT
operation manual, NATS.
lWhen servicing a malfunction of the NATS (indicated by flashing of Malfunction Indicator Lamp)
or registering another NATS ignition key ID no., it may be necessary to re-register original key
identification. Therefore, be sure to receive all keys from vehicle owner.
SEL649V
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
EL-183

System Composition
The immobiliser function of the NATS consists of the following:
lNATS ignition key
lNATS immobiliser control unit (NATS IMMU) located in the ignition key cylinder
lEngine control module (ECM)
lNATS security indicator
lMalfunction indicator lamp (MIL)
SEL402V
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
EL-184

Wiring Diagram Ð NATS Ð
HEL388A
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
EL-185

CONSULT
CONSULT INSPECTION PROCEDURE
1. Turn off ignition switch.
2. Connect ``CONSULT'' to Data link connector for CONSULT.
3. Insert NATS program card into CONSULT.
b
: Program card
NATS-E940
4. Turn on ignition switch.
5. Touch ``START''.
6. Touch ``V.2.0 (GASOLINE)''.
7. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT Operation
Manual, NATS V2.0 (GASOLINE).
SEF056U
SEL327U
SEL328U
SEL329U
NATS (Nissan Anti-Theft System)/Gasoline engine for LHD models
EL-186