Nissan Terrano model r20 series 2004. Instruction — part 433
DIAGNOSTIC PROCEDURE 2
Self-diagnostic results:
“DIFFERENCE OF KEY” displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS “DIFFERENCE OF KEY”
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
“CONSULT-II operation instruction NATS”.
Can the system be initialized?
Note: If the initialization is not completed
or fails, CONSULT-II shows
message on the screen.
Yes
E
No
I
NATS IMMU is malfunc-
tioning.
1. Replace NATS IMMU.
Ref. part No. A
2. Perform initialization
with CONSULT-II.
For the initialization
procedure, refer to
“CONSULT-II operation
instruction NATS”.
Start engine.
END
(Ignition key ID had been unregistered.)
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Trouble Diagnoses (Cont’d)
EL-236
DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
“CHAIN OF IMMU-KEY” displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS “CHAIN OF IMMU-KEY”
displayed on CONSULT-II screen.
OK
CHECK NATS IGNITION KEY ID CHIP.
Can the engine start with another regis-
tered NATS ignition key?
No
E
Yes
I
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
“CONSULT-II operation
instruction NATS”.
CHECK NATS IMMU INSTALLATION.
Refer to “How to Replace NATS IMMU” in
EL-242.
OK
E
NG
Reinstall NATS IMMU cor-
rectly.
Is this vehicle equipped with dongle con-
trol unit (RHD models)?
Yes
E
No
IMMU is malfunctioning.
1. Replace NATS IMMU.
Ref part No. A
2. Perform initialization
with CONSULT-II
For the initialization
procedure, refer to
“CONSULT-II operation
instruction NATS”.
q
A
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Trouble Diagnoses (Cont’d)
EL-237
q
A
CHECK HARNESS CONNECTOR CON-
NECTION.
Check the following harness connector
connection.
M720
Does the engine start?
No
E
Yes
System is OK.
(The malfunction is caused
by improper connector
connection.)
CHECK GROUND CIRCUIT FOR
DONGLE UNIT.
Check continuity between dongle control
unit terminal
q
3
and ground.
Continuity should exist.
Yes
E
No
Repair harness.
CHECK INTERFACE CIRCUIT.
1. Check continuity between IMMU termi-
nal
q
2
and dongle control unit terminal
q
5
(Open circuit check)
Continuity should exist.
2. Check continuity between IMMU termi-
nal
q
2
and ground. (Short circuit check)
Continuity should not exist.
Yes
E
No
Repair harness.
Dongle unit is malfunctioning.
1. Replace dongle control unit.
2. Perform initialization with CONSULT-II.
For the initialization procedure, refer to
“CONSULT-II operation instruction NATS”.
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Trouble Diagnoses (Cont’d)
EL-238
DIAGNOSTIC PROCEDURE 4
Self-diagnostic results:
“ID DISCORD, IMM-ECM” displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS “ID DISCORD, IMM-
ECM*” displayed on CONSULT-II
screen.
* “ID DISCORD, IMM-ECM”:
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
“CONSULT-II operation instruction NATS”.
Can the system be initialized?
Note: If the initialization is not com-
pleted or fails, CONSULT-II shows
message on the screen.
Yes
E
No
I
ECM is malfunctioning.
1. Replace ECM.
Ref. part No. B
2. Perform initialization
with CONSULT-II.
For the initialization
procedure, refer to
“CONSULT-II operation
instruction NATS”.
Start engine. (END)
(System initialization was not completed.
Ref. part No. F)
C2SDD01
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont’d)
EL-239
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