INFINITI FX35 2008 Service Manual

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-187
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The communication between ECM, BCM and/or Intelligent K ey unit uses the CAN communication sys-
tem.
ECM Re-Communicating FunctionINFOID:0000000001327925
Performing following procedure can automatically per form re-communication of ECM and BCM or Intelligent
Key unit, but only when the ECM has been replaced with a new one (*1).
*1: New one means a virgin ECM which has never been energized on-board.
(In this step, initialization procedur e by CONSULT-III is not necessary)
NOTE:
 When registering new Key IDs or replacing the ECM other than brand new, refer to CONSULT-III
Operation Manual NATS-IVIS/NVIS.
 If multiple keys are attached to the key holder, separate them before work.
 Distinguish keys with unregistered key ID from those with registered ID.
1. Install ECM.
2. Using a registered key (*2), turn ignition switch to “ON”. *2: To perform this step, use the key that has been used before performing ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine. If engine can be started, procedure is completed.
If engine cannot be started, refer to CONSULT-III O peration Manual NATS-IVIS/NVIS and initialize control
unit.
PIIA6948E
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BL-188
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Wiring Diagram - NATS -
INFOID:0000000001327926
MODELS WITH INTELLIGENT KEY SYSTEM
TIWM1677E
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-189
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TIWM1678E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-190
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
MODELS WITHOUT INTELLIGENT KEY SYSTEM
TIWM1679E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-191
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Terminal and Reference Value for Steeri ng Lock Unit/with Intelligent Key System
INFOID:0000000001327927
Terminal and Reference Value for Intelli gent Key Unit/with Intelligent Key System
INFOID:0000000001327928
Te r -
minal Wire
color Signal Designation Signal
Input/
output Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1 L/R Power source (Fuse) Input LOCK — Battery voltage
2R/W Steering lock unit power
supply
Input LOCK — 5
3R/B Steering lock unit com-
munication signal Input LOCKPress ignition knob with Intel-
ligent Key inside vehicle.
Other than the above 5
4Y/B Steering lock unit
ground
—— — 0
SIIA1911J
Te r -
minal Wire
color Signal designation Signal
Input/
output Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1R/W Steering lock unit power
supply Output LOCK — 5
2 L CAN-H Input/
Output —— —
3 P CAN-L Input/
Output —— —
6W Ignition power supply
(ON) Input ON
Ignition knob ON or START
position Battery voltage
7 B/W Key switch Input LOCK Insert mechanical key into
ignition key cylinder.
Battery voltage
Remove mechanical key
from ignition key cylinder. 0
11 L/R Power source (Fuse) Input — — Battery voltage
12 B Ground — — — 0
27 L/W Ignition knob switch Input — Press ignition knob. Battery voltage
Return ignition knob to
LOCK position.
0
31 Y/B Steering lock unit
ground —— — 0
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BL-192
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Terminal and Reference Value for BCM
INFOID:0000000001327929
*: With Intelligent Key system
CONSULT-III FunctionINFOID:0000000001327930
CONSULT-III DIAGNOSTIC TEST MODE FUNCTION
NATS SELF-DIAGNOSTIC RESULT ITEM CHART
32 R/B Steering lock unit com-
munication signal Output LOCKPress ignition knob with In-
telligent Key inside vehicle.
Other than the above 5
Te r -
minal Wire
color Signal designation Signal
Input/
output Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
SIIA1911J
Te r -
minal Wire
color Signal designation Signal
Input/
output Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
21 G/B NATS antenna amp. Input/
Output —
Ignition knob OFF
→ ON po-
sition Tester pointer should move just
after turning ignition knob “ON”
23 G/OR Security indicator lamp Output LOCK Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0
25 BR NATS antenna amp. Input/
Output —Ignition knob or switch OFF
→
ON position Tester pointer should move just
after turning ignition knob “ON”
37* B/W Key switch Input — Insert mechanical key into ig-
nition key cylinder
Battery voltage
Remove mechanical key
from ignition key cylinder 0
38 W/L Ignition power supply
(ON) Input ONIgnition knob ON or START
position Battery voltage
39 L CAN-H Input/
Output —— —
40 P CAN-L Input/
Output —— —
42 L/R Power source (Fuse) Input — — Battery voltage
49 B Ground — — — 0
52 B Ground — — — 0
55 G Power source (Fuse) Input — — Battery voltage
CONSULT-III DIAGNOSTIC TEST MODE Description
C/U INITIALIZATION When replacing any of the following three components, C/U initialization is necessary.
[IVIS (NATS) ignition key/ BCM/ ECM]
SELF- DIAGNOSTIC RESULTS Detected items (screen terms) are as shown in the chart.
PIN READ Individual control unit number can be read.
For future information,
refer to operation manual NATS-IVIS/NVIS
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-193
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Detected items (Screen terms) P No.Code
(Self-diagnostic re- sult of “ENGINE”) Description Diagnostic procedure
CHAIN OF ECM-IMMU P1612 Communication impossible between
ECM and BCM.Refer to
BL-195, "
Diagnosis
Procedure 1".
DIFFERENCE OF KEY P1615 BCM can receive the key ID signal but the
result of ID verification between key ID
and BCM is NG.Refer to
BL-197, "
Diagnosis
Procedure 2".
CHAIN OF IMMU-KEY P1614 BCM cannot receive the key ID signal. Refer to
BL-198, "
Diagnosis
Procedure 5".
ID DISCORD, IMM-ECM P1611 The result of ID verification between BCM
and ECM is NG. System initialization is
required.Refer to
BL-197, "
Diagnosis
Procedure 3".
LOCK MODE P1610 When the starting operation is carried out
5 or more times consecutively under the
following conditions, IVIS(NATS) will shift
the mode to prevent the engine start.
 unregistered ignition key is used (with-
out intelligent key system)
 BCM or ECM malfunctioning Refer to
BL-197, "
Diagnosis
Procedure 4".
DON'T ERASE BEFORE CHECK-
ING ENG DIAG —Engine trouble data and IVIS (NATS)
trouble data have been detected in ECM. Refer to
BL-194, "
Diagnosis
Procedure".
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BL-194
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Diagnosis Procedure
INFOID:0000000001327931
WORK FLOW
MIIB0391E
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-195
< SERVICE INFORMATION >
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Trouble Diagnosis Symptom ChartINFOID:0000000001327932
*: When IVIS (NATS) detects trouble, the security indica tor lights up while electronic key is in the “ON” position.
Security Indicator InspectionINFOID:0000000001327933
*: CONSULT-III self-diagnostic results display screen “no malfunction is detected”.
Diagnosis Procedure 1INFOID:0000000001327934
Self-diagnostic results:
“CHAIN OF ECM-IMMU” is display on CONSULT-III screen
First perform the “SELF-DIAG RESULTS” in “BCM” wi th CONSULT-III, then perform the trouble diag-
nosis of malfunction system indicated “SEL F-DIAG RESULTS” of “BCM”. Refer to BCS-13, "
U1000
CAN Communication Circuit".
1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm that SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU” is displayed on the screen?
Does CONSULT-III screen display as shown in figure?
SYMPTOM Displayed “SELF-DIAG
RESULTS” on CON- SULT-III screen. DIAGNOSTIC PROCE-
DURE SYSTEM (Malfunctioning part or mode)
 Security indicator lighting up*
 Engine hard to start CHAIN OF ECM-IMMU
[P1612] Refer to
BL-195, "
Diag-
nosis Procedure 1".Open circuit in battery voltage line to BCM (NATS
IMMU) circuit
Open circuit in ignition
line to BCM (NATS IMMU) cir-
cuit
Open circuit in ground line to BCM (NATS IMMU) cir-
cuit
Open or short circuit between BCM (NATS IMMU)
and ECM communication line.
ECM
BCM (NATS IMMU)
DIFFERENCE OF KEY [P1615] Refer to
BL-197, "
Diag-
nosis Procedure 2".Unregistered key
NATS IMMU
CHAIN OF IMMU-KEY [P1614] Refer to
BL-198, "
Diag-
nosis Procedure 5".Open or short circuit between BCM (NATS IMMU)
and NATS antenna amp.
Malfunction of key ID chip
BCM (NATS IMMU)
Antenna amp.
ID DISCORD, IMM-ECM [P1611] Refer to
BL-197, "
Diag-
nosis Procedure 3"
System initialization has not yet been completed.
ECM
LOCK MODE [P1610] Refer to
BL-197, "
Diag-
nosis Procedure 4".LOCK MODE
 MIL staying ON
 Security indicator lighting up* DON'T ERASE BEFORE
CHECKING ENG DIAG Refer to
BL-194, "
Diag-
nosis Procedure".Engine trouble data and IVIS (NATS) trouble data
have been detected in ECM
SYMPTOM
SYSTEM
(Malfunctioning part or mode) DIAGNOSTIC PROCEDURE
Security indicator does not operate* Security indicator
Refer to BL-200, "
Diagnosis
Procedure 6".
Open circuit between Fuse and BCM (NATS IM-
MU)
Continuation of initialization mode
BCM (NATS IMMU)
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BL-196
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
YES >> GO TO 2.
NO >> Refer to BL-195, "
Trouble Diagnosis Symptom Chart".
2.CHECK POWER SUPPLY CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector M4.
3. Check voltage between BCM connector M4 terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following.  50A fusible link [Letter M, located in fuse block (J/B)]
 15A fuse [No.22, located in fuse block (J/B)]
 Harness for open or short between fusible link or fuse
and BCM.
3.CHECK IGNITION SWITCH ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector M3 terminal and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following.  15A fuse [No.1, located in fuse block (J/B)]
 Harness for open or short between fuse and BCM.
4.CHECK GROUND CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Check continuity between BCM connecto r M4 terminals 49 (B), 52 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between BCM and ground.
5.REPLACE BCM
1. Replace BCM.
2. Perform initialization with CONSULT-III. For initialization, refer to “CONSULT -III Operation Manual NATS-IVIS/NVIS”.
Does the engine start?
YES >> BCM is malfunctioning.  Replace BCM.
 Perform initialization with CONSULT-III.
 For initialization, refer to “CONSULT -III Operation Manual NATS-IVIS/NVIS”.
NO >> ECM is malfunctioning. 42 (L/R) – Ground : Battery voltage
55 (G) – Ground : Battery voltage
PIIA6143E
38 (W/L) – Ground : Battery voltage
PIIA6144E
49 (B) – Ground : Continuity should exist.
52 (B) – Ground : Continuity should exist.
PIIA5084E
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