1998 NISSAN PATROL Check

jA
CHECK ANTENNA AMP. GROUND LINE
CIRCUIT.
1. Turn ignition switch ``OFF''.
2. Check continuity between NATS
antenna amp. terminalj
2and ground.
Continuity should exist.
OK
cNG
Check harness for open or
short between IMMU and
NATS antenna amp. If har-
ness is OK, replace IMMU.
After replacing IMMU, per-
form initialization with
CONSULT. For the initiali-
sation procedure, refer to
``CONSULT operation
manual NATS V2.0
(GASOLINE)''.
NATS antenna amp. is malfunctioning.
When replacing the amp. hold on to amp.
body. Take care not to pull on amp. har-
ness.
DIAGNOSTIC PROCEDURE 6
Self-diagnostic results:
``ID DISCORD, IMM-ECM'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``ID DISCORD, IMM-
ECM*'' displayed on CONSULT
screen.* ``ID DISCORD, IMM-ECM'':
Registered ID of IMMU is in
discord with that of ECM.
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
Re-register all NATS ignition key IDs.
For the initialisation procedure, refer to
``CONSULT operation manual NATS
V2.0''.
Can the system be initialized?
Note: If the initialisation is not completed
or fails, CONSULT shows
mes-
sage on the screen.
Ye s
cNo
+ECM is malfunctioning.
1. Replace ECM.
2. Perform initialisation
with CONSULT.
For the initialisation
procedure, refer to
``CONSULT operation
manual NATS V2.0
(GASOLINE)''.
END.
(System initialisation was not completed.)
SEL504V
SEL383U
SEL372U
.
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-266

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

DIAGNOSTIC PROCEDURE 9
Self-diagnostic results:
``LOCK MODE'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS
``LOCK MODE'' is displayed on CONSULT
screen.
1. Turn the ignition switch to OFF position
and wait 1 minute.
(After 1 minute, security indicator will
blink.)
2. Turn the ignition key switch to ON posi-
tion with a registered key.
(Do not start engine.) Wait 5 seconds.
3. Return the key to the OFF position.
4. Repeat steps 2 and 3 twice (total of
three cycles).
5. Start the engine.
Does the engine start?
No
cYe s
System is OK.
(Now the system is
escaped from ``LOCK
MODE''.)
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(GASOLINE)''.
Can the system be initialised?
Note: If the initialisation is incompleted or
failed, CONSULT shows
mes-
sage on the screen.
No
cYe s
System is OK.
Go to DIAGNOSTIC PROCEDURE 5,
EL-265 to check ``CHAIN OF IMMU-KEY''.
SEL790U
SEL372U
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-268