2005 INFINITI FX35 Key switch

PRECAUTIONS BL-5
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Revision: 2005 July 2005 FX
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
AIS004L9
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectAIS00583
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″ LOCK ″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for WorkAIS004LA

After removing and installing the opening/closing parts, be sure to carry out fitting adjustments to check
their operation.

Check the lubrication level, damage, and wear of each part. If necessary, grease or replace it.

BL-22
POWER DOOR LOCK SYSTEM
Revision: 2005 July 2005 FX
Component Parts and Harness Connector LocationAIS004LO
System DescriptionAIS004LP
Power is supplied at all times

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

to BCM terminal 55

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

to BCM terminal 42

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

to key switch terminal 2 (without intelligent key system)

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

to key switch and ignition knob switch terminal 3 (with intelligent key system)
When key switch is ON (key is inserted in ignition key cylinder), power is supplied

through key switch terminal 1 (without intelligent key system) or 4 (with intelligent key system).

to BCM terminal 37
When the door is locked or unlocked with power window main switch (door lock and unlock switch), ground is
supplied

to CPU of power window main switch

through power window main switch (door lock and unlock switch) terminal 17

through grounds M35, M45 and M85.
Then power window main switch (door lock and unlock switch) operation signal is supplied.

through power window main switch terminal 14.

to BCM terminal 22
When the door is locked or unlocked with front power window switch (passenger side) (door lock and unlock
switch), ground is supplied

to CPU of front power window switch (passenger side)

through front power window switch (passenger side) (door lock and unlock switch) terminal 11

through grounds M35, M45 and M85.
Then front power window switch (passenger side) (door lock and unlock switch) operation signal is supplied

through front power window switch (passenger side) terminal 16.

to BCM terminal 22
When the door is locked with front door key cylinder switch, ground is supplied

to power window main switch terminal 4

through key cylinder switch terminals 1 and 5

through grounds M35, M45 and M85.
PIIA6412E

POWER DOOR LOCK SYSTEM BL-23
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Revision: 2005 July 2005 FX
Then key cylinder switch operation signal (lock) is supplied

through power window main switch terminal 14.

to BCM terminal 22
When the door is unlocked with key cylinder switch, ground is supplied

to power window main switch terminal 6

through key cylinder switch terminal 6 and 5

through grounds M35, M45 and M85.
Then key cylinder switch operation signal (unlock) is supplied

through power window main switch terminal 14.

to BCM terminal 22
BCM is connected to power window main switch and front power window switch (passenger side) as serial
link.
When the front door switch (driver side) is ON (door is OPEN), ground is supplied

to BCM terminal 62

through front door switch (driver side) terminal 1

through front door switch (driver side) case ground.
When the front door switch (passenger side) is ON (door is OPEN), ground is supplied

to BCM terminal 12

through front door switch (passenger side) terminal 1

through front door switch (passenger side) case ground.
When the rear door switch LH is ON (door is OPEN), ground is supplied

to BCM terminal 63

through front door switch LH terminal 1

through rear door switch LH case ground.
When the rear door switch RH is ON (door is OPEN), ground is supplied

to BCM terminal 13

through front door switch RH terminal 1

through rear door switch RH case ground.
When the back door switch is ON (door is OPEN), ground is supplied

to BCM terminal 58

through back door closure motor (door switch) terminal 7 and 8

through grounds B15 and B45.
OUTLINE
Functions Available by Operating the Door Lock and Unlock Switches on Driver's Door and
Passenger's Door

Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors and
fuel lid lock actuator are locked.

Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors
and fuel lid lock actuator are unlocked.
Functions Available by Operating the Key Cylinder Switch on Driver's

Interlocked with the locking operation of door key cylinder, door lock actuators of all doors and fuel lid lock
actuator are locked.
Select Unlock Operation

When door key cylinder is unlocked, door lock actuator driver side and fuel lid lock actuator are unlocked.

When door key cylinder is unlocked for the second time within 5 seconds after the first operation, door
lock actuators on all doors are unlocked.
Select unlock operation mode can be changed using “DOOR LOCK-UNLOCK SET” mode in “WORK
SUPPORT”. Refer to BL-38, "
Work Support" .
Select unlock operation mode can be changed also on the display.
Refer to AV- 6 0 , "
SETTING SCREEN" . (without navigation system)

BL-24
POWER DOOR LOCK SYSTEM
Revision: 2005 July 2005 FX
Refer to AV- 9 4 , "Vehicle Electronic Systems" . (with navigation system)
Key Reminder Door System
When door lock and unlock switch is operated to lock doors with ignition key put in key cylinder and any door
open, all door lock actuators are locked and then unlocked.
Key reminder door mode can be changed using “WORK SUPPORT” mode in “ANTI-LOCK OUT SET”.
Refer to BL-38, "
Work Support" .
CAN Communication System DescriptionAIS004LQ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAIS004RP
Refer to LAN-30, "CAN Communication Unit" .

BL-36
POWER DOOR LOCK SYSTEM
Revision: 2005 July 2005 FX
Terminals and Reference Value for BCMAIS004LV
Terminals and Reference Value for Intelligent Key Unit (With Intelligent Key Sys-
tem)
AIS004LW
Work FlowAIS004LX
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-22, "
System Description" .
3. According to the trouble diagnosis chart by symptom, repair or replace the cause of the malfunction. Refer to BL-40, "
Trouble Diagnosis Chart by Symptom" .
4. Does power door lock system operate normally? YES: GO TO 5.
NO: GO TO 3.
5. INSPECTION END
TERMI- NAL WIRE
COLOR ITEM CONDITION VOLTAGE (V)
Approx.
12 P/B Front door switch (Passenger
side) ON (door open)
→ OFF (door closed) 0 → Battery voltage
13 P/L Rear door switch RH ON (door open) → OFF (door closed) 0 → Battery voltage
22 OR Power window serial link Ignition switch ON
37 B/W Key switch ON (Key inserted)
→ OFF (Key removed
from IGN key cylinder) Battery voltage
→ 0
39 L CAN H — —
40 R CAN L — —
42 L/R Battery power supply (fuse) — Battery voltage
44 Y Driver door lock actuator
(unlock) Door lock / unlock switch
(Free → Unlock) 0
→ Battery voltage → 0
49 B Ground — 0
50 PU Door lock actuator (lock) Door lock / unlock switch
(Free → Lock) 0
→ Battery voltage → 0
51 W/B Passenger and rear doors lock
actuator (unlock) Door lock / unlock switch
(Free → Unlock) 0
→ Battery voltage → 0
52 B Ground — 0
55 G Power source (Fusible link) — Battery voltage
58 L Back door switch ON (Door open) → OFF (Door closed) 0 → 9
62 W Front door switch (Driver side) ON (Door open) → OFF (Door closed) 0 → Battery voltage
63 P Rear door switch LH ON (Door open) → OFF (Door closed) 0 → Battery voltage
PIIA2344J
TERMI-
NAL WIRE
COLOR ITEM CONDITION VOLTAGE (V)
Approx.
2 L CAN H – –
3 R CAN L – –
27 L/W Push switch Push switch (OFF → ON) 0 → Battery voltage
40 BR/W AS unlock output signal Door lock / unlock switch
(Free → Unlock) 0
→ Battery voltage

BL-38
POWER DOOR LOCK SYSTEM
Revision: 2005 July 2005 FX
6. Touch “DOOR LOCK”.
7. Select diagnosis mode.
“WORK SUPPORT”, “DATA MONITOR” and “ACTIVE TEST”
are available.
CONSULT-II APPLICATION ITEMS
Work Support
Data Monitor
*: With Intelligent Key system
PIIA9922E
BCIA0031E
Work item Description
DOOR LOCK-UNLOCK SET Select unlock mode can be changed in this mode. Selects ON-OFF of select unlock mode.
ANTI-LOCK OUT SET Key reminder door mode can be changed in this mode. Selects ON-OFF of key reminder door
mode.
Monitor item Content
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock and unlock switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock and unlock switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch passenger side.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from key cylinder.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from key cylinder.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from key fob.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from key fob.
I-KEY LOCK* Indicates [ON/OFF] condition of lock signal from door request switch.
I-KEY UNLOCK* Indicates [ON/OFF] condition of unlock signal from door request switch.

BL-40
POWER DOOR LOCK SYSTEM
Revision: 2005 July 2005 FX
Trouble Diagnosis Chart by SymptomAIS004M0
Always check the “Work Flow” before troubleshooting. Refer to BL-36, "Work Flow" .
*1 : Lock operation
*2 : Unlock operation
*3 : Driver side
*4 : Except driver side Symptom Diagnoses service procedure
Reference
page
Key reminder door system does not operate properly. 1.Check key reminder door mode.*
*: Key reminder door mode can be changed.
First check key reminder door mode. BL-38
2. Check BCM power supply and ground cir-
cuit BL-41
3. Check key switch.
BL-46
4. Check door switch. BL-42
5. Replace BCM.BCS-16
Power door lock does not operate with door lock and unlock switch. 2. Check BCM power supply and ground cir-
cuit BL-412. Check door lock and unlock switch.
BL-41
3. Replace BCM.BCS-16
Power door lock does not operate with door key cylinder operation.
(Power door lock operate properly with door lock and unlock switch.) 1. Check front door key cylinder switch.
BL-53*1
BL-54*2
2. Replace power window main switch. –
Specific door lock actuator does not operate. 1. Check door lock actuator.
BL-50
*3
BL-51*4
2. Replace BCM.
BCS-16
All door lock actuator (except passenger side and fuel lid) does not
operate.*
*: Only model with intelligent key system. 1. Check select unlock relay circuit.
BL-55
Select unlock does not operate.
(All other power door lock system is “OK”.) 1. Check select unlock mode.*
*: Select unlock mode can be changed.
First check select unlock mode. BL-38
2. Replace BCM.
BCS-16
Fuel lid opener actuator does not operate.
(All door lock actuators operates properly.) 1.Check fuel lid opener actuator.
BL-52

BL-46
POWER DOOR LOCK SYSTEM
Revision: 2005 July 2005 FX
4. CHECK BACK DOOR SWITCH GROUND HARNESS
Check continuity between back door switch connector D109 terminal
8 and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Key SwitchAIS004M2
1. CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check ignition key switch “KEY ON SW” in “DATA MONITOR” mode
with CONSULT-II.

When key is inserted in ignition key cylinder

When key is removed from ignition key cylinder
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> Key switch circuit is OK.
NG >> GO TO 2. (With Intelligent Key)
NG >> GO TO 3. (Without Intelligent Key) 8 (B) – Ground : Continuity should exist.
PIIA6477E
KEY ON SW : ON
KEY ON SW : OFF
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Connector Terminal
Condition of key switch Voltage (V)
Approx.
(+) (-)
M3 37
(B/W) Ground Key is inserted in IGN
key cylinder. Battery voltage
Key is removed from IGN
key cylinder. 0
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