1) Turn ignition switch ªONº.
2) After ªAIR BAGº warning lamp lights for 7 seconds, turn ignitionswitch ªOFFº within 1 second.
3) Wait more than 3 seconds.
4) Repeat steps 1 to 3 three times.
5) Turn ignition switch ªONº.
SRS is now in User mode.
ªAIR BAGº warning lamp operation Ð User mode Ð SRS conditionReference item
MRS095A
No malfunction is detected.
No further action is neces-
sary. Ð
MRS096A
The system is malfunction-
ing and needs to be repaired
as indicated.Go to DIAGNOSTIC PRO-
CEDURE 6 (RS-48).
MRS097A
Air bag is deployed.
Seat belt pre-tensioner is
deployed.Go to COLLISION DIAGNO-
SIS (RS-59).
Air bag fuse, diagnosis sen-
sor unit or harness is mal-
functioning and needs to be
repaired. Go to DIAGNOSTIC PRO-
CEDURE 9 (RS-56).
MRS098A
One of the following has
occurred and needs to be
repaired.
I
Meter fuse is blown.
I ªAIR BAGº warning lamp
circuit has open or short.
I Diagnosis sensor unit is
malfunctioning. Go to DIAGNOSTIC PRO-
CEDURE 10 (RS-58).
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-55
http://vnx.su/
System Description
NATS has the following immobilizer functions:
IThis version of NATS has dongle control unit to improve its anti-theft performance (RHD models). Dongle
control unit has its own ID which is registered into NATS IMMU. So if dongle unit is replaced, initialization
must be carried out.
I When malfunction of dongle unit is detected:
The security indicator lamp illuminates for about 15 minutes after ignition switch is turned to ON.
Ð When dongle control 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 lamp turns off in about
15 minutes after ignition switch is turned to ON.
I 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.
I All 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.
I 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.
I When NATS detects trouble, the security indicator lamp lights up as follows.
Condition IGN ON and With dongle Without dongle
MIL Security indicator MIL Security indicator
NATS malfunction
(except dongle control
unit) is detected Ð
6 times blinking
Staying ON after ignition
switch is turned ON Ð
Staying ON
Only malfunction of
dongle control unit is
detected. Ð Staying ON for about 15
minutes after ignition
switch is turned ON ÐÐ
Malfunction of NATS and
engine related parts are
detected. Staying ON 6 times blinking
Staying ON after ignition
switch is turned ON Staying ON Staying ON
Only engine related part
malfunction is detected. Staying ON Ð Staying ON Ð
Just after initialization of
NATS Ð 6 times blinking Ð Ð
I
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 CONSULT-II
operation manual, NATS.
I When servicing a malfunction of the NATS (indicated by lighting up of security Indicator Lamp) or
registering another NATS ignition key ID no., it may be necessary to re-register original key iden-
tification. Therefore, be sure to receive all keys and the PIN code from vehicle owner.
NATS (Nissan Anti-Theft System)
EL-222
http://vnx.su/
SYMPTOM MATRIX CHART 1
(Self-diagnosis related item)
SYMPTOMDisplayed ªSELF-DIAG
RESULTSº on
CONSULT-II screen DIAGNOSTIC
PROCEDURE
(Reference page) SYSTEM
(Malfunctioning part or mode) REFERENCE PART NO.
OF ILLUSTRATION ON NEXT PAGE
I Security indicator light-
ing up*
I Engine does not start CHAIN OF ECM-IMMU
PROCEDURE 1
(EL-234) Open circuit in battery voltage line
of IMMU circuit
C1
Open circuit in ignition line of IMMU
circuit C2
Open circuit in ground line of IMMU
circuit C3
Open circuit in communication line
between IMMU and ECM C4
Short circuit between IMMU and
ECM communication line and bat-
tery voltage line C4
Short circuit between IMMU and
ECM communication line and
ground line C4
ECM B
IMMU A
DIFFERENCE OF KEY PROCEDURE 2
(EL-236) Unregistered key D
IMMU A
CHAIN OF IMMU-KEY PROCEDURE 3
(EL-237) Malfunction of key ID chip E
IMMU A
Open circuit in ground line of
dongle circuit
C6
Open or short circuit in communica-
tion line between IMMU and dongle
control unit C5
Dongle control unit G
ID DISCORD, IMM-ECM PROCEDURE 4
(EL-239) System initialization has not yet
been completed.
F
ECM B
LOCK MODE PROCEDURE 5
(EL-240) LOCK MODE D
I MI staying ON
I Security indicator light-
ing up* DON'T ERASE BEFORE
CHECKING ENG DIAG
WORK FLOW
(EL-231) Engine trouble data and NATS
trouble data have been detected in
ECM.
Ð
*: When NATS detects trouble, the security indicator lights up while ignition key is in the ªONº position.
*: When the vehicle is equipped with dongle control unit (RHD models), the security indicator blinks 6 times just after ignition switch is turned
to ON. Then the security indicator lights up while ignition key is in the ªONº position.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-232
http://vnx.su/
