2004 INFINITI FX35 Power supply

INTELLIGENT KEY SYSTEM
BL-141
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2004 November 2004 FX35/FX45
4. STEERING LOCK UNIT COMMUNICATION CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit and steering lock unit connectors.
2. Check continuity between Intelligent Key unit connector M34 terminals 1, 31, 32 and steering lock unit
connector M26 terminals 2, 3, 4.
3. Check continuity between steering lock unit connector M26 ter-
minals 2, 3, 4 and ground.
OK or NG
OK >> Replace steering lock unit.

After replacing steering lock unit, perform registration procedure. Refer to “CONSULT-II Opera-
tion Manual NATS-IVIS/NVIS”.
NG >> Repair or replace harness between steering lock unit and Intelligent Key unit.
Check Stop Lamp SwitchAIS004NM
1. STOP LAMP SWITCH POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch connector E210 termi-
nal 1 (GY) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between stop lamp switch
and fuse.
2. STOP LAMP SWITCH OPERATION INSPECTION
Check continuity between stop lamp switch connector E210 terminal
1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Replace stop lamp switch.1 (R/W) - 2 (R/W) : Continuity should exist.
31 (Y/B) - 4 (Y/B) : Continuity should exist.
32 (R/B) - 3 (R/B) : Continuity should exist.
2 (R/W) - Ground : Continuity should not exist.
3 (R/B) - Ground : Continuity should not exist.
4 (Y/B) - Ground : Continuity should not exist.
PIIA6799E
1 (GY) - Ground : Battery voltage
PIIA6811E
1 - 2
Brake pedal depressed : Continuity should exist.
Brake pedal not
depressed: Continuity should not exist.
PIIA6800E

BL-144
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
4. DETENTION SWITCH GROUND CIRCUIT INSPECTION
Check continuity between A/T device (detention switch) connector
M67 terminal 2 (B) and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Select Unlock RelayAIS004NO
1. CHECK SELECT UNLOCK RELAY POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect passenger side select unlock relay connector.
3. Check voltage between passenger side select unlock relay con-
nector M30 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace passenger side select unlock relay power supply circuit.
2. CHECK HARNESS
1. Disconnect Intelligent Key unit connector.
2. Check continuity between passenger side select unlock relay
connector M30 terminal 2 and Intelligent Key unit connector
M34 terminal 40.
3. Check continuity between passenger side select unlock relay
connector M30 terminal 2 and ground.
OK or NG
OK >> Replace passenger side select unlock relay.
NG >> Repair or replace harness between passenger side select unlock relay and Intelligent Key unit.2 (B) – Ground : Continuity should exist.
PIIA6809E
1 (L/R) – Ground : Approx. 12V
PIIA6954E
2 (BR/W) – 40 (BR/W) : Continuity should exist.
2 (BR/W) – Ground : Continuity should not exist.
PIIA6955E

BACK DOOR AUTO CLOSURE SYSTEM
BL-169
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MA
B
BL
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Back Door Closure Control UnitAIS004OG
*, (): Models with Intelligent KeyTe r m i -
nalWire
colorItem ConditionVoltage (V)
(Approx.)
1 R Battery power supply — Battery voltage
2 PU Closure motor (open) signal Fully close → fully open
3 G Closure motor (close) signal Fully open → fully close
4 B Ground — 0
5W
(B)Ground* — 0*
Unlock sensor signal
(passenger side)Passenger side door lock is locked 5
Passenger side door lock is unlocked 0
6Y
(LG)Back door opener switch signalBack door opener switch is ON 0
Other than above 5
7 OR Half-latch switch signal Fully open → fully close
8 L Close switch signal Fully open → fully close
9 P Open switch signal Fully open → fully close
SIIA1480J
SIIA1480J
SIIA1479J
SIIA1478J
SIIA1481J

BL-170
BACK DOOR AUTO CLOSURE SYSTEM
Revision: 2004 November 2004 FX35/FX45
Work FlowAIS004OH
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-165, "
System Description" .
3. Perform the preliminary check, Refer to BL-170, "
Preliminary Check"
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-170,
"Trouble Diagnosis Chart by Symptom" .
5. Does back door auto closure system operate normally? If Yes, GO TO 6, If No, GO TO 4.
6. INSPECTION END
Preliminary CheckAIS004OI
Remove the fuse No.18 for the back door closure with the back door closure inactive.
Check that the back door can be open / close normally.
CAUTION:
It is judged it is abnormal, discontinues closure operation, and drive lever returns to a neutral position
if not becoming full-latch within about three seconds after half-latch.
When this operation is done continuously three times, both back door closure and back door opener
switch are not operated because the function of back door closure is stopped.
Thing to reset power supply by pulling out and opening fuse in that case.
Trouble Diagnosis Chart by SymptomAIS004OJ
Symptom Diagnostic procedure and repair order Refer to page
Back door closure does not operate.1.Back door closure motor power supply and ground
circuit check BL-171
2. Half-latch switch checkBL-171
3. Close switch checkBL-173
4. Open switch check.BL-174
5. Closure motor check.BL-180
6. Replace back door closure control unit.BL-180
Back door does not open (with Intelligent Key system).1. Intelligent Key system check.BL-1132. Back door opener switch check.BL-175
Back door does not open1. Back door opener switch check.BL-1772. Unlock sensor check.BL-179
3. Replace back door closure control unit.BL-180
Back door does not enter fully closed states through
back door closure operates.1.Back door fitting adjustment.BL-159
2. Replace back door lock assembly.BL-163

BACK DOOR AUTO CLOSURE SYSTEM
BL-171
C
D
E
F
G
H
J
K
L
MA
B
BL
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
C
D
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MA
B
BL
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-192
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for BCMAIS004OY
Terminals and Reference Value for IPDM E/RAIS004OZ
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
11 L G / RACC power supply
(ACC or ON)Ignition switch (ACC or ON position) Battery voltage
12 P/BFront door switch
passenger side signalON (Open) → OFF (Closed) 0 → Battery voltage
13 P/L Rear door (RH) switch signal ON (Open) → OFF (Closed) 0 → Battery voltage
22 OR Power window serial linkIGN SW ON or power window timer
operating
23 G/OR Security indicator lamp Goes off → Illuminates Battery voltage → 0
39 L CAN-H — —
40 R CAN-L — —
42 L/R Battery power supply — Battery voltage
49 B Ground (signal) — 0
52 B Ground (power) — 0
55 G Battery power supply — Battery voltage
58 L Back door switch signal ON (Open) → OFF (Closed) 0 → 9
62 WFront door switch
driver side signalON (Open) → OFF (Closed) 0 → Battery voltage
63 P Rear door (LH) switch signal ON (Open) → OFF (Closed) 0 → Battery voltage
PIIA2344J
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
20 LG Headlamp low (RH)Lighting switch 2ND position
ON → OFFBattery voltage → 0
27 BR Headlamp high (RH)Lighting switch HIGH or PASS position
ON → OFFBattery voltage → 0
28 SB Headlamp high (LH)Lighting switch HIGH or PASS position
ON → OFFBattery voltage → 0
30 GY Headlamp low (LH)Lighting switch 2ND position
ON → OFFBattery voltage → 0
38 B Ground (power) — 0
48 L CAN-H — —
49 R CAN-L — —
51 SB Horn relay control signalPanic alarm is operating 0
Other than above Battery voltage
56 LG Hood switch signal ON (Open) → OFF (closed) 0 → Battery voltage
60 B Ground (signal) — 0

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