ignition INFINITI FX35 2004 Service Manual

BL-196
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2004 November 2004 FX35/FX45
Preliminary CheckAIS004P2
The system operation is canceled by turning ignition switch to “ACC” at any step between START and ARMED
in the following flow chart.
After performing preliminary check, go to symptom chart. Refer to BL-197, "
Trouble Diagnosis Symptom
Chart" .
PIIA6910E

VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and door switches connector.
3. Check continuity between BCM connector B14 terminals 62, 63
and door switch connector B26, B46 terminal 1, and ground.
4. Check continuity between BCM connector M3 terminals 12, 13
and door switch connector B36, B206 terminal 1, and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCH
Check continuity between each door switch terminal 1 and ground
part of door switch.
OK or NG
OK >> GO TO 4.
NG >> Replace malfunctioning door switch.BCM – Front door switch (driver side)
62 (W) – 1 (W) : Continuity should exist.
BCM – Rear door switch LH
63 (P) – 1 (P) : Continuity should exist.
BCM – Ground
62 (W) – Ground : Continuity should not exist.
63 (P) – Ground : Continuity should not exist.
PIIA6225E
BCM – Front door switch (passenger side)
12 (P/B) – 1 (SB) : Continuity should exist.
BCM – Rear door switch RH
13 (P/L) – 1 (P) : Continuity should exist.
BCM – Ground
12 (P/B) – Ground : Continuity should not exist.
13 (P/L) – Ground : Continuity should not exist.
PIIA6224E
Terminal Condition Continuity
1Ground part of
door switchPushed No
Released Yes
PIIA3351E

VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Revision: 2004 November 2004 FX35/FX45
3. CHECK HOOD SWITCH
1. Turn ignition switch OFF.
2. Disconnect hood switch connector.
3. Check continuity between hood switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace hood switch.
4. CHECK IPDM E/R OUTPUT SIGNAL
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Check the following.

Hood switch ground circuit.

Harness for open or short between hood switch and
IPDM E/R.
NG >> Replace IPDM E/R
Terminals Condition Continuity
1 2Pressed No
Released Yes
PIIA2498E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
E9 56 (LG) GroundOPEN 0
CLOSE Battery voltage
PIIA6228E

BL-202
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2004 November 2004 FX35/FX45
1 – 3 BACK DOOR SWITCH CHECK
1. CHECK BACK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check (“BACK DOOR SW”) in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and back door closure motor connector.
3. Check continuity between BCM connector B14 terminal 58 and
back door closure motor connector D109 terminal 7.
4. Check continuity between BCM connector B14 terminal 58 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Monitor item Condition
BACK DOOR SWOPEN : ON
CLOSE : OFF
PIIA2488E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B14 58 (L) GroundOPEN 0
CLOSE 9
PIIA6229E
58 (L) – 7 (L) : Continuity should exist.
58 (L) – Ground : Continuity should not exist.
PIIA6226E

BL-204
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2004 November 2004 FX35/FX45
Diagnostic Procedure 2AIS004P5
SECURITY INDICATOR LAMP CHECK
1. SECURITY INDICATOR LAMP ACTIVE TEST
With CONSULT-II
Check (“THEFT IND”) in “ACTIVE TEST” mode with CONSULT-II.
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> Security indicator lamp is OK.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and security indicator lamp connector.
3. Check continuity between BCM connector M3 terminal 23 and
security indicator lamp connector M38 terminal 2.
OK or NG
OK >> Check the following.

Harness for open or short between BCM and security
indicator lamp.

10A fuse [No.19, located in fuse block (J/B)]
NG >> Repair or replace harness between BCM and security
indicator lamp. Perform operation shown on display indicator lamp
should illuminate.
PIIA7005E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M3 23 (G/OR) GroundIlluminates 0
Goes off Battery voltage
PIIA6230E
23 (G/OR) – 2 (G/OR) : Continuity should exist.
PIIA6231E

BL-206
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)PFP:28591
Component Parts and Harness Connector LocationAIS004PA
NOTE:
If customer reports a “NO START” condition, request ALL ignition key (without intelligent key system) or
mechanical key (with intelligent key system) to be brought to the dealer to check for a NATS malfunction.
System DescriptionAIS004PB
DESCRIPTION
IVIS (Infiniti Vehicle Immobilizer System – NATS) has the following immobilizer functions:

Engine immobilizer shows high anti-theft performance to prevent engine start by other than the owner
(registered key: ignition key, mechanical key and Intelligent Key).

Only a key with key ID registered in BCM and ECM can start engine, and shows high anti-theft perfor-
mance to prevent key from being copied or stolen.
PIIA6649E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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In the vehicle without Intelligent Key system, security indicator always flashes with other than ignition
switch ON or START position.

In the vehicle with Intelligent Key system, security indicator always flashes with mechanical key removed
condition (key switch OFF) and ignition knob released condition on LOCK position (ignition knob switch
OFF).

Therefore, IVIS (NATS) warns outsiders that the vehicle is equipped with the anti-theft system.

If system detects malfunction, it turns on security indicator in ignition switch ON position.

If the owner requires, mechanical key ID can be registered for up to 5 keys.

During trouble diagnosis or when the following parts have been replaced, and if ignition key or mechanical
key is added, registration* is required.
*: All keys kept by the owner of the vehicle should be registered with ignition key or mechanical key.
–ECM
–BCM
–Ignition key (models without Intelligent Key system)
–Mechanical key (models with Intelligent Key system)

IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key or mechanical key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS
(NATS) software. When IVIS (NATS) initialization has been completed, the ID of the inserted ignition key
or mechanical key or mechanical key IDs can be carried out.
Regarding the procedures of IVIS (NATS) initialization and ignition key or mechanical key ID registration,
refer to CONSULT-II operation manual, NATS-IVIS/NVIS.
SECURITY INDICATOR

Warns that the vehicle has IVIS (NATS).

In the vehicle without Intelligent Key system, security indicator always flashes with other than ignition
switch ON or START position. In the vehicle with Intelligent Key system, security indicator always flashes
with mechanical key removed condition (key switch OFF) and ignition knob released condition on LOCK
position (ignition knob switch OFF).
NOTE:
Because security indicator is highly efficient, the battery is barely affected.
Condition of Security Indicator
WITHOUT INTELLIGENT KEY SYSTEM
WITH INTELLIGENT KEY SYSTEM

In ignition knob operation with Intelligent Key, it always turns on with pushing ignition knob, and always
flashes with ignition knob released (ignition knob switch OFF) condition on ignition knob “LOCK” position.

In ignition knob operation with mechanical key, it turns off on the condition that mechanical key is inserted
in key cylinder, and always flashes with ignition knob released (ignition knob switch OFF) condition on
mechanical key removed condition.
Security indicator
conditionIgnition keyOperation or condition of ignition key
Ignition switch:
ON positionIgnition switch:
ACC positionIgnition switch:
OFF position
(Key is inserted.)Ignition switch:
OFF position
(Remove key.)
Register key OFF Flashing Flashing Flashing
Ignition key not
registeredON Flashing Flashing Flashing

BL-208
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
System CompositionAIS004PC
The immobilizer function of the IVIS (NATS) consists of the following:

Ignition key (models without Intelligent Key system)

Mechanical key (models with Intelligent Key system)

NATS antenna amp.

Steering lock unit. (models with Intelligent Key system)

BCM

Intelligent Key unit (models with Intelligent Key system)

Engine control module (ECM)

Security indicator
NOTE:
The communication between ECM, BCM and/or Intelligent Key unit uses the CAN communication sys-
tem.
ECM Re-communicating FunctionAIS004PD
Performing following procedure can automatically perform 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 procedure by CONSULT-II is not necessary)
NOTE:

When registering new Key IDs or replacing the ECM other than brand new, refer to CONSULT-II
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-II Operation Manual NATS-IVIS/NVIS and initialize control
unit.
PIIA6948E

BL-212
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Steering Lock Unit/with Intelligent Key Sys-
tem
AIS004PF
Terminals and Reference Value for Intelligent Key Unit/with Intelligent Key Sys-
tem
AIS004PG
Te r -
minal
No.Wire
colorSignal DesignationMeasuring condition
Voltage (V)
Approx. Ignition knob
positionOperation or conditions
1 L/R Battery power supply LOCK — Battery voltage
2R/WSteering lock unit
power supplyLOCK — 5
3R/BSteering lock unit com-
munication signalLOCKPress ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
4Y/BSteering lock unit
ground—— 0
SIIA1911J
Te r -
minal
No.Wire
colorSignal designationMeasuring condition
Voltage (V)
Approx. Ignition knob
positionOperation or conditions
1R/WSteering lock unit
power supplyLOCK — 5
2 L CAN communication H — — —
3 R CAN communication L — — —
6 G/R Ignition power supply ON — Battery voltage
7 B/W Key switch LOCKInsert mechanical key into ignition key
cylinder.Battery voltage
Remove mechanical key from ignition
key cylinder.0
11 L/R Battery power supply — — Battery voltage
12 B GND — — 0
27 L/W Ignition knob switch —Press ignition knob. Battery voltage
Return ignition knob to LOCK position. 0
31 Y/BSteering lock unit
ground—— 0
32 R/BSteering lock unit com-
munication signalLOCKPress ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
SIIA1911J

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for BCMAIS004PH
*: With Intelligent Key systemTe r -
minal
No.Wire
colorSignal designationMeasuring condition
Voltage (V)
Approx. Ignition knob
positionOperation or conditions
21 G/B NATS antenna apm. — Ignition knob OFF → ON positionTester pointer should move just
after turning ignition knob “ON”
23 G/OR Security indicator lamp LOCKGoes OFF → illuminates (Every 2.4
seconds)Battery voltage → 0
25 BR NATS antenna amp. — Ignition knob OFF → ON positionTester pointer should move just
after turning ignition knob “ON”
37* B/W Key switch —Insert mechanical key into ignition key
cylinderBattery voltage
Remove mechanical key from ignition
key cylinder0
38 W/L Ignition power supply ON Ignition knob ON or START position Battery voltage
39 L CAN-H — — —
40 R CAN-L — — —
42 L/R Battery power supply — — Battery voltage
49 B GND — — 0
52 B GND — — 0
55 G Battery power supply — — Battery voltage