2001 NISSAN PICK-UP key

Diagnostic Procedure
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº, EC-3598, again.
5. Is the malfunction displayed again?
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory.
3. Perform ªDTC Confirmation Procedureº, EC-3598, again.
4. Perform ªDiagnostic Test Mode II (Self-diagnostic results)º.
5. Is the DTC 0903 displayed again?
Yes or No
YescGO TO 2.
NocINSPECTION END
2 REPLACE ECM
1. Replace ECM.
2. Perform intialization of NATS system and registration of all NATS ignition key IDs. Refer to EC-3429. (Models with NATS)
3. Perform ªAccelerator Position Sensor Idle Position Learningº of ªBASIC SERVICE PROCEDUREº. Refer to EC-3427.
cINSPECTION END
DTC 0903 ECM 15YD25DDTi
EC-3599

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. Power door lock system
2. Remote controller battery
3. Door lock/unlock circuit
4. Ignition power supply circuit for
multi-remote control unit
5. Power supply circuit for multi-re-
mote control unit
6. Ground circuit for multi-remote
control unit
7. Remote controller1. Check power door lock operation.
2. Check remote controller battery. Refer to EL-3140.
3. Check harness for open or short between multi-remote
control unit and smart entrance control unit.
4. Make sure battery voltage is present at terminal
V4of
multi-remote control unit while ignition switch is in IGN
position.
5. Make sure battery voltage is present at terminal
V2of multi-remote control unit.
6. Check continuity between terminal
V1of multi-remote
control unit and ground.
7. Replace remote controller. Refer to EL-3139.
Hazard reminder does not operate
properly.1. Hazard reminder output to haz-
ard warning lamps
2. Hazard reminder circuit
3. Driver's door unlock sensor1. Check hazard reminder output to hazard warning
lamps at terminals
V3andV8of multi-remote control
unit.
2. Check the harness for open or short between hazard
warning lamps and multi-remote control unit.
3. Check driver's door unlock sensor signal at terminal
V7of multi-remote control unit.
The new ID of remote controller
cannot be entered.1. Remote controller battery
2. Ignition power supply circuit
for multi-remote control unit
3. Driver's door unlock sensor
4. Remote controller1. Check remote controller battery. Refer to EL-3140.
2. Make sure battery voltage is present at terminal
V4of
multi-remote control unit while ignition switch is in IGN
position.
3. Check driver's door unlock sensor signal at terminal
V7of multi-remote control unit.
4. Replace remote controller. Refer to EL-3139.
Refer to ªMULTI-REMOTE CONTROL UNIT INSPECTION TABLEº on next page to check the control unit
signals.
NOTE:
+The lock operation of multi-remote control system does not activate with the ignition key ON position.
MULTI-REMOTE CONTROL SYSTEM
EL-3137

MULTI-REMOTE CONTROL UNIT INSPECTION TABLE
Terminal
No.Connections ConditionVoltage (V)
(approximate
values)
1 Ground Ð Ð
2 Power source (BAT) Ð 12
3 Hazard warning lamp RHRemote controller LOCK/UNLOCK button is pushed
(All doors are closed and key is not in ignition key cylinder.)12
Other than above condition 0
4 Ignition power supply Ignition switchOFF 0
ON or START 12
5 Lock signalRemote controller LOCK button is pushed
(All doors are closed and key is not in ignition key cylinder.)0
Other than above condition 5
6 Unlock signalRemote controller UNLOCK button is pushed
(Key is not in ignition key cylinder.)0
Other than above condition 5
7 Driver side door unlock sensor Driver side doorLocked 5
Unlocked 0
8 Hazard warning lamp LHRemote controller LOCK/UNLOCK button is pushed
(All doors are closed and key is not in ignition key cylinder.)12
Other than above condition 0
SEL147X
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-3138

ID Code Entry Procedure
Activation of the registration mode:
The vehicle must have been unlocked by either the multi-remote controller or a transponder OK signal (TPOK)
from the vehicle's immobilizer.
Preparation: - Make sure all doors unlock.
- Make sure all multi-remote controllers to be registered are available.
- Make sure the batteries of all multi-remote controllers are in a good condition.
- Make sure all transmitting sources are out of the neighbourhood of the vehicle.
- Make sure the battery of the vehicle is in a good condition.b
Switch ignition-switch exactly six times from the ªLOCKº to the ªONº position within 10 seconds and return the
ignition switch to the ªLOCKº position (leaving the key in the ignition switch).b
After 2 seconds the registration mode is activated. The turn signal lamps will flash twice.
OKNG
Proceed with the registration mode.
NOTE
The registration mode is operated when:+The ignition-switch is turned to the ªONº position.
+4 multi remote controllers have been learned.
+No multi-remote controller or ignition switch input is received within 120 sec-
onds.
Registration mode
Press and hold the ªUNLOCKº button of the multi-remote controller.b
Press the ªLOCKº button 3 times.
Release the ªUNLOCKº button.cIf the multi-remote controller
code is registered correctly,
the turn signal lamp will flash
once.cNG
Do you want to register another multi-remote controller? (max. 4)
No
Yes
bOK
m
After registration of the requested No. of multi-remote controller(s),
confirm the ID-code(s) by switching the ignition switch to the ªONº
position.cIf the multi-remote controller
registration is performed
correctly, the turn signal lamp
will flash twice.
Take the ignition key out of the ignition switch and confirm the func-
tioning of all multi-remote controllers by locking and unlocking the
vehicle with each of the multi-remote controllers.b
OKNG
End
.
.
.
.
.
.
.
.
MULTI-REMOTE CONTROL SYSTEM
EL-3139

Component Parts and Harness Connector
Location
NOTE:
If customer reports a ªNo Startº condition, request ALL KEYS to be brought to the Dealer is case of
a NATS malfunction.
SEL598Y
NATS (Nissan Anti-Theft System)
EL-3142

System Description
NATS has the following immobilizer functions:
+Since only NATS ignition keys, whose ID nos. 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.
+This version of NATS has dongle unit to improve its anti-theft performance (RHD models for Europe).
Dongle unit has its own ID which is registered into NATS IMMU. So it dongle unit is replaced, initializa-
tion must be carried out.
+When malfunction of dongle unit is detected:
Ð The security indicator lamp illuminates for about 15 minutes after ignition switch is turned to ON.
Ð When dongle unit has a malfunction and the indicator lamp is illuminated, engine can not be started.
However, engine can be started only one time when security indicator turns off in about 15 minutes
after ignition switch is turned to ON.
+Both of the originally supplied ignition key IDs have been NATS registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the NATS compo-
nents.
+The NATS security indicator (NATS security ind.) blinks when the ignition switch is in ªOFFº or ªACCº
position. Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.
+When NATS detects trouble, the security indicator lamp lights up as follows.
Condition
IGN ON andWith Dongle Without Dongle
Security Indicator Security Indicator
NATS malfunction (except dongle unit) is
detected1. 6 times blinking
2. Staying ON after ignition switch is
turned ONStaying ON
Only malfunction of dongle unit is
detected.Staying ONfor about 15 minutesafter
ignition switch is turned ON.Ð
Malfunction of NATS and engine related
parts are detected1. 6 times blinking
2. Staying ON after ignition switch is
turned ONStaying ON
Just after initialization of NATS 6 times blinking Ð
+NATS trouble diagnoses, system initialization and additional registration of other NATS ignition key IDs
must be carried out using CONSULT-II hardware and CONSULT-II NATS software.
Regarding the procedures of NATS initialization and NATS ignition key ID registration, refer to CON-
SULT-II operation manual, NATS.
+When servicing a malfunction of the NATS (indicated by lighting up of security Indicator Lamp)
or registering another NATS ignition key ID no., it is necessary to re-register original key identi-
fication. Therefore, be sure to receive ALL KEYS from vehicle owner.
NATS (Nissan Anti-Theft System)
EL-3143

System Composition
The immobilizer function of the NATS consists of the following:
+NATS ignition key
+NATS immobilizer control unit (NATS IMMU), located in the ignition key cylinder
+Engine control module (ECM)
+Dongle unit (RHD models for Europe)
+NATS security indicator
SEL148X
NATS (Nissan Anti-Theft System)
EL-3144

CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
CONSULT-II DIAGNOSTIC TEST
MODEDescription
C/U INITIALIZATION When replacing any of the following components, C/U initialization is necessary.
[NATS ignition key/IMMU/ECM/Dongle unit]
SELF-DIAG RESULTS Detected items (screen terms) are as shown in the chart below.
NOTE:
When any initialization is performed, all ID previously registered will be erased. So all NATS ignition
keys must be registered again.
The engine cannot be started with an unregistered key. In this case, the system may show ªDIFFER-
ENCE OF KEYº or ªLOCK MODEº as a self-diagnostic result on the CONSULT-II screen.
When initialization is performed (for RHD models), security indicator will flash six times to demon-
strate recognition of dongle unit ID.
HOW TO READ SELF-DIAGNOSTIC RESULTS
SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items (Screen terms) Description Reference page
ECM INT CIRC-IMMUThe malfunction of ECM internal circuit of IMMU communication line is
detected.EL-3152
CHAIN OF ECM-IMMUCommunication impossible between ECM and IMMU.
(In rare case, ªCHAIN OF ECM-IMMUº might be stored during key regis-
tration procedure, even if the system is not malfunctioning.)EL-3153
DIFFERENCE OF KEYIMMU can receive the key ID signal but the result of ID verification
between key ID and IMMU is NG.EL-3155
CHAIN OF IMMU-KEYIMMU cannot receive the key ID signal. Otherwise, the registered ID sig-
nal from dongle unit cannot be received when the IMMU requests the
ID.EL-3156
ID DISCORD, IMM-ECMThe result of ID verification between IMMU and ECM is NG. System ini-
tialization is required.EL-3157
DON'T ERASE BEFORE CHECK-
ING ENG DIAGEngine trouble data and NATS trouble data have been detected in ECM. EL-3149
LOCK MODEWhen the starting operation is carried out 5 or more times consecutively
under the following conditions, NATS will shift the mode to one which
prevents the engine from being started.
+unregistered ignition key is used
+IMMU or ECM malfunctioningEL-3158
SEL151X
NATS (Nissan Anti-Theft System)
CONSULT-II (Cont'd)
EL-3148