2004 INFINITI FX35 Cylinder

POWER DOOR LOCK SYSTEM
BL-25
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Revision: 2004 November 2004 FX35/FX45
Refer to AV- 9 5 , "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-40, "
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-6, "CAN Communication Unit" .

POWER DOOR LOCK SYSTEM
BL-37
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Revision: 2004 November 2004 FX35/FX45
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-23, "
System Description" .
3. Perform the preliminary check. Refer to BL-38, "
Preliminary Check" .
4. According to the trouble diagnosis chart by symptom, repair or replace the cause of the malfunction.
Refer to BL-41, "
Trouble Diagnosis Chart by Symptom" .
5. Does power door lock system operate normally?
YES: GO TO 6.
NO: GO TO 4.
6. INSPECTION END
TERMI-
NALWIRE
COLORITEM CONDITIONVOLTAGE (V)
Approx.
12 P/BFront 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 switchON (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 YDriver door lock actuator
(unlock)Door lock / unlock switch
(Free → Unlock)0 → Battery voltage
49, 52 B Ground — 0
50 PU Door lock actuator (lock)Door lock / unlock switch
(Free → Lock)0 → Battery voltage
51 W/BPassenger and rear doors lock
actuator (unlock)Door lock / unlock switch
(Free → Unlock)0 → Battery voltage
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-
NALWIRE
COLORITEM CONDITIONVOLTAGE (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 signalDoor lock / unlock switch
(Free → Unlock)0 → Battery voltage

BL-40
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
6. Select item to be diagnosed on “SELECT TEST ITEM” screen.
CONSULT-II APPLICATION ITEMS
Work Support
Data Monitor
*: With Intelligent Key system
Active Test
LKIA0099E
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 SETKey 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.
Test item in “DOOR LOCK” Content
ALL LOCKThis test is able to check all door lock actuators lock operation.
These actuators lock when “ALL LOCK” on CONSULT-II screen is touched.
ALL UNLOCKThis test is able to check all door lock actuators unlock operation.
These actuators unlock when “ALL UNLOCK” on CONSULT-II screen is touched.
DR UNLOCKThis test is able to check door lock actuator (driver side) unlock operation.
This actuator unlock when “DR UNLOCK” on CONSULT-II screen is touched.
OTHER UNLOCKThis test is able to check all door lock actuators (except driver side) unlock operation.
These actuators unlock when “OTHER UNLOCK” on CONSULT-II screen is touched.

POWER DOOR LOCK SYSTEM
BL-41
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Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis Chart by SymptomAIS004M0
Always check the “Work Flow” before troubleshooting. Refer to BL-37, "Work Flow" .
*1 : Lock operation
*2 : Unlock operation
*3 : Driver side
*4 : Except driver sideSymptom Diagnoses service procedureReference
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-40
2. Preliminary CheckBL-38
3. Check key switch.BL-46
4. Check door switch. BL-42
5. Replace BCM.BCS-15
Power door lock does not operate with door lock and unlock switch.1. Preliminary checkBL-382. Check door lock and unlock switch.BL-48
3. Replace BCM.BCS-15
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-15
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-40
2. Replace BCM.BCS-15
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: 2004 November 2004 FX35/FX45
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 M3 terminal 37 (B/W) 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
PIIA6470E
Condition of key switchVoltage (V)
Approx.
Key switch is “ON”. (Key is inserted in IGN key cylinder.) Battery voltage
Key switch is “OFF”. (Key is removed from IGN key cylinder.) 0
PIIA6378E

POWER DOOR LOCK SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. CHECK KEY SWITCH (WITH INTELLIGENT KEY)
1. Disconnect key switch and ignition knob switch connector.
2. Check continuity between key switch and ignition knob switch
terminals 3 and 4.
OK or NG
OK >> Check the following.

15A fuse (No. 22, located in fuse and fusible link block)

Harness for open or short between key switch and fuse

Harness for open or short between BCM and key switch
NG >> Replace key switch.
3. CHECK KEY SWITCH (WITHOUT INTELLIGENT KEY)
1. Disconnect key switch connector.
2. Check continuity between key switch terminals 1 and 2.
OK or NG
OK >> Check the following.

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

Harness for open or short between key switch and fuse

Harness for open or short between BCM and key switch
NG >> Replace key switch.
Condition of key switch Continuity
Key switch is “ON”. (Key is inserted in IGN key cylinder.) Yes
Key switch is “OFF”. (Key is removed from IGN key cylinder.) No
PIIA6140E
Condition of key switch Continuity
Key switch is “ON”. (Key is inserted in IGN key cylinder.) Yes
Key switch is “OFF”. (Key is removed from IGN key cylinder.) No
PIIA2627E

BL-48
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check Door Lock and Unlock SwitchAIS004M3
1. CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL
With CONSULT-II
Check door lock and unlock switch (“CDL LOCK SW” and “CDL
UNLOCK SW”) in DATA MONITOR mode with CONSULT-II.

When door lock and unlock switch is turned to LOCK:

When door lock and unlock switch is turned to UNLOCK:
Without CONSULT-II
1. Remove key from ignition key cylinder.
2. Check the signal between BCM connector M3 terminal 22 and ground with oscilloscope when door lock
and unlock switch is turned “LOCK” or “UNLOCK”.
3. Make sure signals which are shown in the figure below can be
detected during 10 second just after door lock and unlock switch
is turned “LOCK” or “UNLOCK”.
OK or NG
OK >> Door lock and unlock switch circuit is OK.
NG >> GO TO 2.CDL LOCK SW : ON
CDL UNLOCK SW : ON
PIIA6538E
ConnectorTerminal
(Wire color)Signal
(Reference value)
(+) (–)
M3 22(OR) Ground
PIIA6379E
PIIA1297E

POWER DOOR LOCK SYSTEM
BL-53
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Revision: 2004 November 2004 FX35/FX45
Check Front Door Key Cylinder Switch (Lock) AIS004M7
1. CHECK FRONT DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK SIGNAL)
With CONSULT-II
Check front door key cylinder switch LH (“KEY CYL LK SW”) in
“DATA MONITOR” mode with CONSULT-II.

When key cylinder switch is turned to “LOCK”.
Without CONSULT-II
Check voltage between power window main switch (door lock and
unlock switch) connector D6 terminal 4 and ground.
OK or NG
OK >> Front door key cylinder switch circuit driver side (lock) is OK.
NG >> GO TO 2.
2. CHECK FRONT DOOR KEY CYLINDER SWITCH
1. Disconnect front door key cylinder switch driver side connector.
2. Check continuity between front door key cylinder switch driver
side terminals 1 and 5.
OK or NG
OK >> Check the following.

Front door key cylinder switch driver side ground circuit.

Harness for open or short between power window main switch (door lock and unlock switch)
and front door key cylinder switch driver side.
NG >> Replace front door key cylinder switch driver side.KEY CYL LK-SW : ON
PIIA6541E
ConnectorTerminal (Wire color)
Front door key cylinder
switch positionVoltage (V)
(Approx.)
(+) (-)
D6 4 (P) GroundNeutral / Unlock 5
Lock 0
PIIA6203E
Front door key cylinder switch position Continuity
Neutral / Unlock No
Lock Yes
PIIA6543E