Infiniti I35 (A33). Manual — part 445
Trouble Diagnoses
NHEL0177
WORK FLOW
NHEL0177S01
SEL024X
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
Trouble Diagnoses
EL-381
SYMPTOM MATRIX CHART 1
NHEL0177S02
(Self-diagnosis related item)
SYMPTOM
Displayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.
DIAGNOSTIC PROCE-
DURE
(Reference page)
SYSTEM
(Malfunctioning part or
mode)
REFERENCE PART NO.
OF ILLUSTRATION ON
NEXT PAGE
I
Security indicator
lighting up*
I
Engine hard to start
ECM INT CIRC-IMMU
PROCEDURE 1
ECM
B
CHAIN OF ECM-IMMU
PROCEDURE 2
In rare case, “CHAIN
OF ECM-IMMU” might
be stored during key
registration procedure,
even if the system is
not malfunctioning.
—
Open circuit in battery
voltage line of IMMU
circuit
C1
Open circuit in ignition
line of IMMU circuit
C2
Open circuit in ground
line of IMMU circuit
C3
Open circuit in commu-
nication line between
IMMU and ECM
C4
Short circuit between
IMMU and ECM com-
munication line and bat-
tery voltage line
C4
Short circuit between
IMMU and ECM com-
munication line and
ground line
C4
ECM
B
IMMU
A
DIFFERENCE OF KEY
PROCEDURE 3
Unregistered key
D
IMMU
A
CHAIN OF IMMU-KEY
PROCEDURE 4
Malfunction of key ID
chip
E
IMMU
A
ID DISCORD, IMM-
ECM
PROCEDURE 5
System initialization has
not yet been com-
pleted.
F
ECM
F
LOCK MODE
PROCEDURE 7
LOCK MODE
D
I
MIL staying ON
I
Security indicator
lighting up*
DON’T ERASE
BEFORE CHECKING
ENG DIAG
WORK FLOW
Engine trouble data and
IVIS (NATS) trouble
data have been
detected in ECM
—
*: When IVIS (NATS) detects trouble, the security indicator lights up while ignition key is in the “ON” position.
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
Trouble Diagnoses (Cont’d)
EL-382
SYMPTOM MATRIX CHART 2
NHEL0177S03
(Non self-diagnosis related item)
SYMPTOM
DIAGNOSTIC PROCEDURE
(Reference page)
SYSTEM
(Malfunctioning part or mode)
Security ind. does not light up.
PROCEDURE 6
Security ind.
Open circuit between Fuse and IMMU
Continuation of initialization mode
IMMU
DIAGNOSTIC SYSTEM DIAGRAM
NHEL0177S04
SEL087WD
SEL314W
DIAGNOSTIC PROCEDURE 1
NHEL0177S06
Self-diagnostic results:
“ECM INT CIRC-IMMU” displayed on CONSULT-II screen
1.
Confirm SELF-DIAGNOSTIC RESULTS “ECM INT CIRC-
IMMU” displayed on CONSULT-II screen. Ref. part No. B.
2.
Replace ECM.
3.
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual
IVIS/NVIS”.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
Trouble Diagnoses (Cont’d)
EL-383
DIAGNOSTIC PROCEDURE 2
=NHEL0177S07
Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
1
CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU” displayed on CONSULT-II screen.
NOTE:
In rare case, “CHAIN OF ECM-IMMU” might be stored during key registration procedure, even if the system is not mal-
functioning.
SEL292W
Is CONSULT-II screen displayed as above?
Yes
©
GO TO 2.
No
©
GO TO SYMPTOM MATRIX CHART 1.
2
CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU connector.
2. Check voltage between terminal 8 of IMMU and ground with CONSULT-II or tester.
SEL302W
OK or NG
OK
©
GO TO 3.
NG
©
Check the following
I
15A fuse (No. 59, located in the fuse and fusible link box)
I
Harness for open or short between fuse and IMMU connector
Ref. Part No. C1
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)
Trouble Diagnoses (Cont’d)
EL-384
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