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DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
ªCHAIN OF IMMU-KEYº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS ªCHAIN OF IMMU-KEYº
displayed on CONSULT-II screen.
OK
CHECK NATS IGNITION KEY ID CHIP.
Can the engine start with another regis-
tered NATS ignition key?
No
EYe s IIgnition key ID chip is
malfunctioning.
1. Replace the ignition key.
Ref. part No. E
2. Perform initialization with CONSULT-II.
For the initialization
procedure, refer to
ªCONSULT-II operation
manual NATSº.
CHECK NATS IMMU INSTALLATION.
Refer to ªHow to Replace NATS IMMUº in
EL-242.
OK
ENG Reinstall NATS IMMU cor-
rectly.
Is this vehicle equipped with dongle con-
trol unit (RHD models)?
Ye s
ENoIMMU is malfunctioning.
1. Replace NATS IMMU.
Ref part No. A
2. Perform initialization with CONSULT-II
For the initialization
procedure, refer to
ªCONSULT-II operation
manual NATSº.
qA
YEL480B
H
H
H
H
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-237
http://vnx.su/

DIAGNOSTIC PROCEDURE 4
Self-diagnostic results:
ªID DISCORD, IMM-ECMº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS ªID DISCORD, IMM-
ECM*º displayed on CONSULT-II
screen.* ªID DISCORD, IMM-ECMº:Registered ID of IMMU is in
discord with that of ECM.
PERFORM INITIALIZATION.
Perform initialization with CONSULT-II.
Re-register all NATS ignition key IDs.
For the initialization procedure, refer to
ªCONSULT-II operation manual NATSº.
Can the system be initialized?
Note: If the initialization is not com- pleted or fails, CONSULT-II shows
message on the screen.
Ye s
ENo IECM is malfunctioning.
1. Replace ECM. Ref. part No. B
2. Perform initialization with CONSULT-II.
For the initialization
procedure, refer to
ªCONSULT-II operation
manual NATSº.
Start engine. (END)
(System initialization was not completed.
Ref. part No. F)
C2SDD01
YEL479B
H
H
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-239
http://vnx.su/

DIAGNOSTIC PROCEDURE 5
Self-diagnostic results:
ªLOCK MODEº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS ªLOCK MODEº is dis-
played on CONSULT-II screen.
1. Turn the ignition switch to OFF posi-tion.
2. Turn the ignition key switch to ON posi- tion with a registered key.
(Do not start engine.) Wait for 5 sec-
onds.
3. Return the key to the OFF position.
4. Repeat steps 2 and 3 twice (total of three cycles).
5. Start the engine. Can the engine start?
No
EYe s System is OK.
(Now the system is
escaped from ªLOCK
MODEº.)
CHECK NATS IMMU INSTALLATION.
Refer to ªHow to Replace NATS IMMUº in
EL-242.
OK
ENGReinstall NATS IMMU cor-
rectly.
PERFORM INITIALIZATION.
Perform initialization with CONSULT-II.
For the initialization procedure, refer to
ªCONSULT-II operation manual NATSº.
Can the system be initialized?
Note: If the initialization is incompleted or
failed, CONSULT-II shows
mes-
sage on the screen.
No
EYe s System is OK.
Go to DIAGNOSTIC PROCEDURE 4,
EL-237 to check ªCHAIN OF IMMU-KEYº.
YEL484B
YEL479B
H
H
H
H
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-240
http://vnx.su/