display NISSAN PATROL 1998 Y61 / 5.G Electrical System User Guide

DIAGNOSTIC PROCEDURE 1
Self-diagnostic results:
``IMMU'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS ``IMMU'' displayed on CON-
SULT screen.
+IMMU is malfunctioning.
1. Replace IMMU.
2. Perform initialisation with CONSULT.
For the initialisation procedure, refer to ``CONSULT operation manual NATS
V2.0 (GASOLINE)''.
DIAGNOSTIC PROCEDURE 2
Self-diagnostic results:
``ECM'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS ``ECM'' displayed on CONSULT
screen.
+ECM is malfunctioning.
1. Replace ECM.
2. Perform initialisation with CONSULT.
For the initialisation procedure, refer to ``CONSULT operation manual NATS
V2.0 (GASOLINE)''.
SEL330U
SEL331U
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-246

DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
``CHAIN OF ECM-IMMU'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``CHAIN OF ECM-
IMMU'' displayed on CONSULT
screen.
OK
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between IMMU terminalj
8
and ground.
Battery voltage should exist.
OK
cNG
Check the following.
+7.5A fuse (No.
50:RD
engine,
49: TB engine,
located in the fuse and
fusible link box)
+Harness for open or
short between fuse and
IMMU connector
CHECK IGN SW. ON SIGNAL.
Check voltage between IMMU terminalj
7
and ground while ignition switch is ``ON''
position.
Battery voltage should exist.
OK
cNG
Check the following.
+10A fuse [No.
25,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
IMMU connector
CHECK GROUND CIRCUIT FOR IMMU.
Check continuity between IMMU terminal
j
4and ground.
Continuity should exist.
OK
cNG
Repair harness.
CHECK COMMUNICATION OPEN CIR-
CUIT.
Check continuity between IMMU terminal
j
1and ECM terminalj55(RD engine),j11
(TB engine).
Continuity should exist.
OK
cNG
Repair harness.
jA
SEL333U
SEL395VA
SEL396VA
SEL397VA
SEL497V
.
.
.
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-247

DIAGNOSTIC PROCEDURE 4
Self-diagnostic results:
``DIFFERENCE OF KEY'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``DIFFERENCE OF
KEY'' displayed on CONSULT
screen.
OK
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
+IMMU is malfunctioning.
1. Replace IMMU.
2. Perform initialisation
with CONSULT.
For the initialisation
procedure, refer to
``CONSULT operation
manual NATS V2.0
(GASOLINE)''.
END.
(The ignition key was unregistered.)
SEL343U
SEL344U
SEL372U
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-249

DIAGNOSTIC PROCEDURE 5
Self-diagnostic results:
``CHAIN OF IMMU-KEY'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``CHAIN OF IMMU-
KEY'' displayed on CONSULT
screen.
OK
CHECK NATS IGNITION KEY ID CHIP.
Can the engine start with another regis-
tered NATS ignition key?
No
cYe s
+Ignition key ID chip is
malfunctioning.
1. Replace the ignition
key.
2. Perform initialisation
with CONSULT.
For the initialisation
procedure, refer to
``CONSULT operation
manual NATS V2.0
(GASOLINE)''.
+IMMU is malfunctioning.
1. Replace IMMU.
2. Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS
V2.0''.
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.)
SEL373U
SEL383U
SEL372U
.
.
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-250

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.
Can the engine start?
Ye sNo
END
SEL384U
SEL385U
.
.
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-251

DIAGNOSTIC PROCEDURE 8
Self-diagnostic results:
``LOCK MODE'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``LOCK MODE'' is dis-
played on CONSULT 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
cYe s
System is OK.
(Now the system is
escaped from ``LOCK
MODE''.)
CHECK NATS IMMU INSTALLATION.
Refer to ``How to Replace NATS IMMU'' in
EL-253.
OK
cNG
Reinstall NATS IMMU cor-
rectly.
PERFORM INITIALISATION.
Perform initialisation with CONSULT.
For the initialisation procedure, refer to
``CONSULT operation manual NATS V2.0
(GASOLINE)''.
Can the system be initialized?
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-250 to check ``CHAIN OF IMMU-KEY''.
SEL790U
SEL038V
.
.
.
.
NATS (Nissan Anti-Theft System)/LHD MODELS
Trouble Diagnoses (Cont'd)
EL-252

Trouble Diagnoses
WORK FLOW
CHECK IN*Lighting-up mode of MIL (Malfunction Indicator Lamp)
For single malfunction of NATS: Blinking
For dual malfunctions of NATS and an engine-related part:
Stays ON
For single malfunction of an engine-related part: Stays ON
Listen to customer complaints or request. (Get symptoms)
TROUBLEKEY SERVICE REQUEST (Additional key ID registration).Verify the MIL*.INITIALISATION
(Refer to CONSULT operation
manual NATS V2.0.)
cUsing the CONSULT program card for NATS check the ``SELF-
DIAG RESULTS'' with CONSULT.b
Self-diagnostic results referring to NATS, but no information
about engine self-diagnostic results is displayed on CONSULT.Self-diagnostic results referring to NATS and ``DON'T ERASE
BEFORE CHECKING ENG DIAG'' are displayed on CONSULT.
(This means that engine trouble data has been detected in
ECM.)
Turn ignition switch ``OFF''.
Repair NATS.
(If necessary, carry out ``SELF-FUNCTION CHECK'' or ``C/U INI-
TIALISATION'' with CONSULT.)Turn ignition switch ``OFF''.
Turn ignition switch ``ON''.Repair NATS.
(If necessary, carry out ``SELF-FUNCTION CHECK'' or ``C/U INI-
TIALISATION'' with CONSULT.)
Erase the NATS ``SELF-DIAG RESULTS'' by using CONSULT.
(Touch ``ERASE''.)Do not erase the NATS ``SELF-DIAG RESULTS'' by using
CONSULT.
Start the engine.
Start the engine.Check the NATS ``SELF-DIAG RESULTS'' by using CONSULT.
OKNG
NGVerify no blinking of MIL*.
OKTurn ignition switch ``OFF''.
CHECK OUTCheck the engine ``SELF-DIAG RESULTS'' with CONSULT by
using the CONSULT generic program card.
(Engine diagnostic software included)b
Perform running test with CONSULT in engine ``SELF-DIAG
RESULTS'' mode.Repair ECCS. (Refer to EC section.)
NGVerify ``NO FAILURE'' displayed on the CONSULT screen.
OKTurn ignition switch ``ON''.
CHECK OUTErase the engine ``SELF-DIAG RESULTS'' by using CONSULT.
(Touch ``ERASE''.)
Start the engine.
.
.
.
..
.
..
..
..
.
..
..
..
..
..
..
.
NATS (Nissan Anti-Theft System)/RHD MODELS
EL-259

SYMPTOM CHART
SYMPTOMDisplayed ``SELF-DIAG
RESULTS'' on CONSULT
screen.DIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning
part or mode)
+MIL blinking
+Engine can start.IMMUPROCEDURE 1
(EL-261)IMMU
ECMPROCEDURE 2
(EL-261)ECM
+MIL blinking
+Engine hard to startCHAIN OF ECM-IMMUPROCEDURE 3
(EL-262)Open circuit in battery voltage line of IMMU circuit
Open circuit in ignition line of IMMU circuit
Open circuit in ground line of IMMU circuit
Open or short circuit in communication line
between IMMU and ECM
Open circuit in power source line of ANT/AMP cir-
cuit
ECM
IMMU
DIFFERENCE OF KEYPROCEDURE 4
(EL-264)Unregistered key
IMMU
CHAIN OF IMMU-KEYPROCEDURE 5
(EL-265)Open or short circuit in communication line
between ANT/AMP and IMMU
Open circuit in power source line of ANT/AMP cir-
cuit
Open circuit in ground line of ANT/AMP circuit
Malfunction of key ID chip
IMMU
Antenna amp.
ID DISCORD, IMM-ECMPROCEDURE 6
(EL-266)System initialisation has not yet been completed.
ECM
MINGLE NOISEPROCEDURE 7
(EL-267)Noise interference in communication line
+MIL blinking
+Engine hard to start
+NATS security indicator
does not blink for 1 minute
after ignition switch is
turned to ``OFF''.LOCK MODEPROCEDURE 9
(EL-268)LOCK MODE
+MIL staying ONDON'T ERASE BEFORE
CHECKING ENG DIAGWORK FLOW
(EL-259)Engine trouble data and NATS trouble data have
been detected in ECM
+NATS security ind. does not
light up.
+Engine can start.ÐPROCEDURE 8
(EL-267)NATS security ind.
Open circuit between Fuse and NATS IMMU
Continuation of initialisation mode
NATS IMMU
*Lighting-up mode of MIL (Malfunction Indicator Lamp)
For single malfunction of NATS: Blinking
For dual malfunctions of NATS and an engine-related part: Stays ON
For single malfunction of an engine-related part: Stays ON
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-260

DIAGNOSTIC PROCEDURE 1
Self-diagnostic results:
``IMMU'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS ``IMMU'' displayed on CON-
SULT screen.
+IMMU is malfunctioning.
1. Replace IMMU.
2. Perform initialisation with CONSULT.
For the initialisation procedure, refer to ``CONSULT operation manual NATS
V2.0 (GASOLINE)''.
DIAGNOSTIC PROCEDURE 2
Self-diagnostic results:
``ECM'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC RESULTS ``ECM'' displayed on CONSULT
screen.
+ECM is malfunctioning.
1. Replace ECM.
2. Perform initialisation with CONSULT.
For the initialisation procedure, refer to ``CONSULT operation manual NATS
V2.0 (GASOLINE)''.
SEL330U
SEL331U
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-261

DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
``CHAIN OF ECM-IMMU'' displayed on CONSULT screen
Con®rm SELF-DIAGNOSTIC
RESULTS ``CHAIN OF ECM-
IMMU'' displayed on CONSULT
screen.
OK
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between terminalj
4of
IMMU and ground with CONSULT or
tester.
Voltage: Battery voltage
OK
cNG
Check the following:
+7.5A fuse (No.
50,
located in the fuse and
fusible link box)
+Harness for open or
short between fuse and
IMMU connector
CHECK IGN SW. ON SIGNAL.
Check voltage between terminalj
3of
IMMU and ground with CONSULT or
tester.
Voltage: Battery voltage
OK
cNG
Check the following:
+10A fuse [No.
25,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
IMMU connector
CHECK GROUND CIRCUIT FOR IMMU.
Check harness continuity between IMMU
terminalj
8,j9and ground.
Continuity should exist.
OK
cNG
Repair harness.
CHECK COMMUNICATION ON OPEN
CIRCUIT.
Check harness continuity between the fol-
lowing ECM terminal and IMMU terminal.
ECMj
55and IMMUj6
Continuity should exist.
OK
cNG
Repair harness.
jA
SEL333U
SEL867UD
SEL868UD
SEL499V
SEL500V
.
.
.
.
.
NATS (Nissan Anti-Theft System)/RHD MODELS
Trouble Diagnoses (Cont'd)
EL-262