Infiniti I30 (A33). Manual — part 436
System Description
=NHEL0173
IVIS (Infiniti Vehicle Immobilizer System — NATS) has the following immobilizer functions:
I
Since only IVIS (NATS) ignition keys, whose ID nos. have been registered into the ECM and IMMU of IVIS
(NATS), allow the engine to run, operation of a stolen vehicle without a IVIS (NATS) registered key is pre-
vented by IVIS (NATS).
That is to say, IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key
of IVIS (NATS).
I
All of the originally supplied ignition key IDs (except for card plate key) have been IVIS (NATS) registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the IVIS (NATS) com-
ponents.
I
The security indicator blinks when the ignition switch is in “OFF” or “ACC” position. Therefore, IVIS (NATS)
warns outsiders that the vehicle is equipped with the anti-theft system.
I
When IVIS (NATS) detects trouble, the security indicator lamp lights up while ignition key is in the “ON”
position.
I
IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS (NATS) software.
Regarding the procedures of IVIS (NATS) initialization and IVIS (NATS) ignition key ID registration, refer
to CONSULT-II operation manual, IVIS/NVIS.
I
When servicing a malfunction of the IVIS (indicated by lighting up of Security Indicator Lamp) or
registering another IVIS ignition key ID no., it is necessary to re-register original key identification.
Therefore, be sure to receive ALL KEYS from vehicle owner.
System Composition
NHEL0174
The immobilizer function of the IVIS (NATS) consists of the following:
I
IVIS (NATS) ignition key
I
IVIS (NATS) immobilizer control unit (IMMU) located in the ignition key cylinder
I
Engine control module (ECM)
I
Security indicator
SEL085WC
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
System Description
EL-413
Wiring Diagram — NATS —
NHEL0175
MEL486M
SEL984X
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
Wiring Diagram — NATS —
EL-414
SEF289X
CONSULT-II
NHEL0176
CONSULT-II INSPECTION PROCEDURE
NHEL0176S01
1.
Turn ignition switch OFF.
2.
Connect “CONSULT-II” to the data link connector.
SEL060Y
3.
Insert IVIS (NATS) program card into CONSULT-II.
: Program card
NATS (AEN00A)
4.
Turn ignition switch ON.
5.
Touch “START”.
SEL851W
6.
Select “NATS V.5.0”.
SEL728W
7.
Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation
Manual, IVIS/NVIS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
NHEL0176S02
CONSULT-II DIAGNOSTIC TEST
MODE
Description
C/U INITIALIZATION
When replacing any of the following three components, C/U initialization and re-registration
of all IVIS (NATS) ignition keys are necessary.
[IVIS (NATS) ignition key/IMMU/ECM]
SELF-DIAG RESULTS
Detected items (screen terms) are as shown in the chart EL-416.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
CONSULT-II
EL-415
NOTE:
I
When any initialization is performed, all ID previously reg-
istered will be erased and all IVIS (NATS) ignition keys
must be registered again.
I
The engine cannot be started with an unregistered key. In this
case, the system will show “DIFFERENCE OF KEY” or “LOCK
MODE” as a self-diagnostic result on the CONSULT-II screen.
I
In rare case, “CHAIN OF ECM-IMMU” might be stored as a
self-diagnostic result during key registration procedure, even if
the system is not malfunctioning.
HOW TO READ SELF-DIAGNOSTIC RESULTS
NHEL0176S03
SEL364X
IVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART
NHEL0176S04
Detected items (NATS program card
screen terms)
P No. Code
(Self-diag-
nostic result
of “ENGINE”
Malfunction is detected when . .
Reference page
ECM INT CIRC-IMMU
NATS MAL-
FUNCTION
P1613
The malfunction of ECM internal circuit of IMMU com-
munication line is detected.
CHAIN OF ECM-IMMU
NATS MAL-
FUNCTION
P1612
Communication impossible between ECM and IMMU
(In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.)
DIFFERENCE OF KEY
NATS MAL-
FUNCTION
P1615
IMMU can receive the key ID signal but the result of ID
verification between key ID and IMMU is NG.
CHAIN OF IMMU-KEY
NATS MAL-
FUNCTION
P1614
IMMU cannot receive the key ID signal.
ID DISCORD, IMM-ECM
NATS MAL-
FUNCTION
P1611
The result of ID verification between IMMU and ECM is
NG. System initialization is required.
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
CONSULT-II (Cont’d)
EL-416
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