2001 NISSAN PICK-UP display

DIAGNOSTIC PROCEDURE 2
Self-diagnostic results:
ªCHAIN OF ECM-IMMUº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS ªCHAIN OF ECM-
IMMUº* displayed on CONSULT-II
screen.
OK*: In rare case, ªCHAIN OF
ECM-IMMUº might be
stored during key registra-
tion procedure, even if the
system is not malfunction-
ing.
CHECK POWER SUPPLY CIRCUIT FOR
IMMU.
Check voltage between IMMU connector
M68terminalV8(W/L) and ground.
Voltage: Battery voltage
OK
cNG
Check the following:
+20A fuse (No.
36,
located in the fuse and
fusible link box) (Diesel
engine models)
+10A fuse (No.
33,
located in the fuse and
fusible link box) (Gaso-
line engine models)
+Harness for open or
short between fuse and
IMMU connector
Ref. part No. C1
CHECK IGN SW. ON SIGNAL.
Check voltage between IMMU connector
M68terminalV7(W/R) and ground while
ignition switch is in the ªONº position.
Voltage: Battery voltage
OK
cNG
Check the following:
+10A fuse [No.
21,
located in the fuse
block (J/B)]
+Harness for open or
short between fuse and
IMMU connector
Ref. part No. C2
CHECK GROUND CIRCUIT FOR IMMU.
Check harness continuity between IMMU
connector
M68terminalV4(B) and
ground.
Continuity should exist.
OK
cNG
Repair harness.
Ref. part No. C3
CHECK COMMUNICATION ON OPEN
CIRCUIT.
Check harness continuity between the
following ECM terminal and IMMU termi-
nal.
ECM connector
M32terminalV65
(G/OR) or IMMU connectorM68ter-
minal
V1(G/OR)
Continuity should exist.
OK
cNG
Repair harness.
Ref. part No. C4
VA
SEL153X
SEL154XC
SEL155XC
SEL156XB
SEL610Y
.
.
.
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-3153

DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
ªDIFFERENCE OF KEYº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS ªDIFFERENCE OF
KEYº displayed on CONSULT-II
screen.
OK
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.
Initialization
completedInitialization
with CON-
SULT-II
incomplete or
failed
c
+IMMU is mal-
functioning.
1. Replace
IMMU.
Ref. part No.
A
2. Perform initial-
ization with
CONSULT-II.
For the initial-
ization
procedure,
refer to ªCON-
SULT-II opera-
tion manual
NATSº.
Start engine.
END.
(The ignition key was unregistered.)
Ref. part No. D
SEL163X
SEL566W
.
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-3155

DIAGNOSTIC PROCEDURE 4
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.
Start engine with another registered
NATS ignition key.
Does the engine start?
No
cYes
+Ignition 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.
Is this vehicle equipped with dongle unit
(RHD models for Europe)?
Yes
cNo
+IMMU is malfunctioning.
1. Replace IMMU.
Ref part No. A
2. Perform initialization
with CONSULT-II.
For the initialization
procedure, refer to
ªCONSULT-II operation
manual NATSº.
CHECK HARNESS CONNECTOR CON-
NECTION.
Check the following harness connector
connection.
M68,N12Does the engine start?
No
cYes
System is OK.
(The malfunction is caused
by improper connector
connection.)
CHECK GROUND CIRCUIT FOR
DONGLE UNIT.
Check continuity between dongle unit ter-
minal
V1(B/W) and ground.
Continuity should exist.
Yes
cNo
Repair harness.
Ref. part No. C6
CHECK INTERFACE CIRCUIT.
1. Check continuity between IMMU con-
nector
M68terminalV2(P) and
dongle unit terminalV7(P) (Open cir-
cuit check)
Continuity should exist.
2. Check continuity between IMMU con-
nector
M68terminalV2(P) and
ground. (Short circuit check)
Continuity should not exist.
Yes
cNo
Repair harness.
Ref. part No. C5
Dongle unit is malfunctioning.
1. Replace dongle unit.Ref. part No. G
2. Perform initialization with CONSULT-II.
For the initialization procedure, refer to
ªCONSULT-II operation manual NATSº.
SEL165X
SEL160XA
SEL161XA
SEL162XA
.
.
.
.
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-3156

DIAGNOSTIC PROCEDURE 5
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.
Initialization
completedInitialization
with CON-
SULT-II
incomplete or
failed
c
+ECM is mal-
functioning.
1. Replace ECM.
Ref. part No.
B
2. Perform initial-
ization with
CONSULT-II.
For the initial-
ization
procedure,
refer to ªCON-
SULT-II opera-
tion manual
NATSº.
Start engine. (END)
(System initialization was not completed.
Ref. part No. F)
SEL166X
SEL566W
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-3157

DIAGNOSTIC PROCEDURE 6
Self-diagnostic results:
ªLOCK MODEº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC RESULTS
ªLOCK MODEº is displayed on CON-
SULT-II screen.
1. Turn the ignition switch to OFF posi-
tion.
2. Turn the ignition key switch to ON
position 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
cYes
System is OK.
(Now the system is
escaped from ªLOCK
MODEº.)
CHECK NATS IMMU INSTALLATION.
Refer to ªHow to Replace NATS IMMUº in
EL-3160.
OK
cNG
Reinstall 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
message on the screen.
No
cYes
System is OK.
Go to DIAGNOSTIC PROCEDURE 4,
EL-3156 to check ªCHAIN OF IMMU-
KEYº.
SEL167X
SEL566W
.
.
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-3158