2004 INFINITI FX35 fuse

BACK DOOR AUTO CLOSURE SYSTEM
BL-171
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Revision: 2004 November 2004 FX35/FX45
Back Door Closure Control Unit Power Supply and Ground Circuit CheckAIS004OK
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector
D106 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following.

15A fuse [No.18, located in fuse block (J/B)]

Harness for open or short between back door closure
control unit and fuse.
2. CHECK GROUND CIRCUIT
1. Disconnect back door closure control unit connector.
2. Check continuity between back door closure control unit con-
nector D106 terminal 4 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
Half-Latch Switch CheckAIS004OL
1. CHECK HALF-LATCH SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure control unit connector and ground with oscilloscope.
OK or NG
OK >> Half-latch switch is OK.
NG >> GO TO 2.1 (R) – Ground : Battery voltage
PIIA6166E
4 (B) – Ground : Continuity should exist.
PIIA6167E
Con-
nectorTerminals (Wire color)
Back door
conditionSignal
(Reference value)
(+) (-)
D106 7 (OR) GroundFully open →
fully closed
PIIA6168E
SIIA1479J

VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-183
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Revision: 2004 November 2004 FX35/FX45
Canceling the Set Vehicle Security System
When one of the following operations is performed, the armed phase is canceled.
1. Unlock the doors with the key, key fob or Intelligent Key.
2. Turn ignition switch “ON” or “ACC” position.
Canceling the Alarm Operation of the Vehicle Security System
When unlock the door with the key, key fob or Intelligent Key the alarm operation is canceled.
Activating the Alarm Operation of the Vehicle Security System
Make sure the system is in the armed phase. (The security indicator lamp brinks every 2.4 seconds.)
When the following operation 1 or 2 is performed, the system sounds the horns and flashes the headlamps for
about 50 seconds.
1. Hood, back door or any door is opened during armed phase.
2. Disconnecting and connecting the battery connector before canceling armed phase.
POWER SUPPLY
Power is supplied at all times

through 10A fuse [No.19, located in the fuse block (J/B)]

to security indicator lamp terminal 1.

through 50A fusible link (letter M , located in the fuse and fusible link box)

to BCM terminal 55.

through 15A fuse [No.22, located in the fuse block (J/B)]

to BCM terminal 42.

through 15A fuse [No.34, located in the fuse and fusible link box]

to horn relay terminal 2.

through 10A fuse [No.71, located in the IPDM E/R]

to IPDM E/R internal CPU.

through 15A fuse [No.78, located in the IPDM E/R]

to IPDM E/R internal CPU.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)]

to BCM terminal 11.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors, hood and back door.
To activate the vehicle security system, BCM must receive signals indicating the doors, hood and back door
are closed and the doors are locked by key fob, Intelligent Key or ignition key.
When a door is open, BCM terminal 12 (passenger side door), 13 (rear RH door), 62 (driver side door), 63
(rear LH door) receives a ground signal from each door switch.
When front door LH is unlocked by power window main switch (door lock and unlock switch),
BCM terminal 22 receives a signal from terminal 14 of power window main switch with power window serial
link.
When front door RH is unlocked by front power window switch (passenger side) (door lock and unlock switch),
BCM terminal 22 receives a signal from terminal 16 of front power window switch (passenger side) with power
window serial link.
When the hood is open, IPDM E/R receives a ground signal

to IPDM E/R terminal 56

through hood switch terminal 2

through hood switch terminal 1

through body grounds E21, E50 and E51.
The IPDM E/R then sends a signal to the BCM through the CAN SYSTEM.
When the back door is open,

to BCM terminal 58

through back door closure motor terminal 7

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-218
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis Symptom ChartAIS004PK
*: When IVIS (NATS) detects trouble, the security indicator lights up while electronic key is in the “ON” position.
Security Indicator InspectionAIS004PL
*: CONSULT-II self-diagnostic results display screen “no malfunction is detected”.SYMPTOMDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURESYSTEM (Malfunctioning part or mode)

Security indicator
lighting up*

Engine hard to startECM INT CIRC-IMMU
[P1613]Refer to BL-219, "
Diag-
nostic Procedure 1" .ECM
CHAIN OF ECM-IMMU
[P1612]Refer to BL-220, "
Diag-
nostic Procedure 2" .Open circuit in battery voltage line to BCM (NATS
IMMU) circuit
Open circuit in ignition line to BCM (NATS IMMU)
circuit
Open circuit in ground line to BCM (NATS IMMU)
circuit
Open or short circuit between BCM (NATS IMMU)
and ECM communication line.
ECM
BCM (NATS IMMU)
DIFFERENCE OF KEY
[P1615]Refer to BL-221, "
Diag-
nostic Procedure 3" .Unregistered key
NATS IMMU
CHAIN OF IMMU-KEY
[P1614]Refer to BL-224, "
Diag-
nostic Procedure 6" .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-222, "
Diag-
nostic Procedure 4"
System initialization has not yet been completed.
ECM
LOCK MODE
[P1610]Refer to BL-223, "
Diag-
nostic Procedure 5" .LOCK MODE

MIL staying ON

Security indicator
lighting up*DON'T ERASE
BEFORE CHECKING
ENG DIAGRefer to BL-217, "WORK FLOW" .Engine trouble data and IVIS (NATS) trouble data
have been detected in ECM
SYMPTOMSYSTEM
(Malfunctioning part or mode)DIAGNOSTIC PROCEDURE
Security indicator does not operate*Security indicator
Refer to BL-226, "
Diagnostic
Procedure 7" . Open circuit between Fuse and BCM (NATS
IMMU)
Continuation of initialization mode
BCM (NATS IMMU)

BL-220
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
Diagnostic Procedure 2AIS004PN
Self-diagnostic results:
“CHAIN OF ECM-IMMU” is display on CONSULT-II screen
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagno-
sis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-14, "
CAN Com-
munication Inspection Using CONSULT-II (Self-Diagnosis)" .
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm that SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-
IMMU” is displayed on the screen?
Does CONSULT-II screen display as shown in figure?
YES >> GO TO 2.
NO >> GO TO BL-218, "
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 42 (L/R),
55 (G) 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 38 (W/L)
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.
PIIA1260E
42 (L/R) – Ground : Battery voltage
55 (G) – Ground : Battery voltage
PIIA6143E
38 (W/L) – Ground : Battery voltage
PIIA6144E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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Revision: 2004 November 2004 FX35/FX45
4. CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
Check voltage between NATS antenna amp. connector M25 terminal 1 (L/R) and ground with CONSULT-II or
tester.
OK or NG
OK >> GO TO 5.
NG >> Check harness for open or short between NATS
antenna amp. and fuse.
5. CHECK NATS ANTENNA AMP. SIGNAL LINE- 1
Check voltage between NATS antenna amp. connector M25 terminal 2 (G/B) and ground with analogue tester.
OK or NG
OK >> GO TO 6.
NG >>

Check harness for open or short between NATS
antenna amp. and BCM.
NOTE:
If harness is OK, replace BCM, perform initialization
with CONSULT-II. For initialization, refer to “CONSULT-II Operation Manual NATS–IVIS/NVIS”.
6. CHECK NATS ANTENNA AMP. SIGNAL LINE- 2
Check voltage between NATS antenna amp. connector M25 terminal 4 (BR) and ground with analogue tester.
OK or NG
OK >> GO TO 7.
NG >>

Check harness for open or short between NATS
antenna amp. and BCM.
NOTE:
If harness is OK, replace BCM, perform initialization
with CONSULT-II. For initialization, refer to “CONSULT-II Operation Manual NATS–IVIS/NVIS”. 1 (L/R) – Ground : Battery voltage
PIIA6145E
Before inserting mechanical key in ignition knob
Voltage: 0V
Just after inserting mechanical key in ignition knob
: Pointer of tester should move.
PIIA6146E
Before inserting mechanical key in ignition knob
Voltage: 0V
Just after inserting mechanical key in ignition knob
: Pointer of tester should move.
PIIA6147E

BL-226
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
7. CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
1. Turn ignition switch “OFF”.
2. Check continuity between NATS antenna amp. connector M25 terminal 3 (B) and ground.
OK or NG
OK >> NATS antenna amp. is malfunctioning.
NG >>

Check harness for open or short between NATS
antenna amp. and ground.
NOTE:
If harness is OK, replace BCM, perform initialization
with CONSULT-II. For initialization, refer to “CON-
SULT-II Operation Manual NATS–IVIS/NVIS”.
Diagnostic Procedure 7AIS004PS
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No.19, located in the fuse block (J/B)]
OK or NG
OK >> GO TO 2.
NG >> Replace fuse.
2. CHECK SECURITY INDICATOR LAMP
1. Install 10A fuse [No.19, located in the fuse block (J/B)]
2. Start engine and turn ignition switch OFF.
3. Check the security indicator lamp lights up.
OK or NG
OK >> Inspection END.
NG >> GO TO 3.
3. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Disconnect security indicator lamp connector.
2. Check voltage between security indicator lamp connector M38
terminal 1 (R/W) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check harness for open or short between fuse and
security indicator lamp. 3 (B) – Ground : Continuity should exist.
PIIA6148E
Security indicator lamp should light up.
1 (R/W) – Ground : Battery voltage
PIIA6149E

TROUBLE DIAGNOSIS
BRC-49
[VDC/TCS/ABS]
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BRC
Revision: 2004 November 2004 FX35/FX45
3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY (1)
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Turn ignition switch OFF. Check voltage between ABS actuator
and electric unit (control unit) harness connector E56 and
ground.
3. Turn ignition switch ON (but do not start engine). Check voltage
between ABS actuator and electric unit (control unit) harness
connector E56 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND SYSTEM
Check ABS actuator and electric unit (control unit) ground system.
OK or NG
OK >> Perform ABS actuator and electric unit (control unit) self-
diagnosis again.
NG >> Repair or replace harness or connectors.
5. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY (2)
1. Check fuse 10A (terminal 4) and 30A (terminal 32).
2. Turn ignition switch OFF and check continuity between battery
positive terminal and ABS actuator and electric unit (control unit)
harness connector E56.
OK or NG
OK >> Check for non-standard conditions in battery (terminal
looseness, low voltage, etc.) and alternator.
NG >>

Replace fuse 10A or 30A.

Open or short in harness. ABS actuator and electric
unit (control unit)
(Harness connector E56)GroundVoltage (V)
(Approx.)
32 (R) — 12 V
ABS actuator and electric
unit (control unit)
(Harness connector E56)GroundVoltage (V)
(Approx.)
4 (G) — 12 V
SFIA1200E
ABS actuator and electric
unit (control unit)
(Harness connector E56)Ground Continuity
16 (B) — Yes
SFIA1434E
ABS actuator and elec-
tric unit (control unit)
(Harness connector E56)Battery positive
terminalContinuity
4 (G), 32 (R) — Yes
SFIA1435E