bcm INFINITI FX35 2005 Workshop Manual

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System DescriptionAIS004MB
INPUTS
Power is supplied at all times

to BCM terminal 55

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

to BCM terminal 42

through 15A fuse (No. 22, located in the fuse and fusible link box).
When the key switch is ON (key is inserted in ignition key cylinder), power is supplied

to BCM terminal 37

through key switch terminal 1 and 2

through 15A fuse (No. 22, located in the fuse and fusible link box).
When the ignition switch is ACC or ON, power is supplied

to BCM terminal 11

through 10A fuse [No. 6, located in the fuse block (J/B)].
When the ignition switch is ON or START, power is supplied

to BCM terminal 38

through 15A fuse [No. 1, located in the fuse block (J/B)].
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 rear 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 meter terminal 13

through rear 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) terminals 7 and 8

through body grounds B15 and B45
Key fob signal is inputted to remote keyless entry receiver (the antenna of the system is built in remote keyless
entry receiver).

to BCM terminal 20

from remote keyless entry system controls operation of the
The remote keyless entry system controls operation of the

power door lock

hazard and horn reminder

auto door lock

panic alarm

keyless power window down (open)

room lamp and key ring illumination

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REMOTE KEYLESS ENTRY SYSTEM
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OPERATED PROCEDURE
Power Door Lock Operation
BCM receives a LOCK signal from key fob. BCM locks all doors with input of LOCK signal from key fob.
When an UNLOCK signal is sent from key fob once, driver's door will be unlocked.
Then, if an UNLOCK signal is sent from key fob again within 5 seconds, all other door will be unlocked.
Power door lock operation mode can be changed using “DOOR LOCK-UNLOCK SET” mode in “WORK SUP-
PORT” of “POWER DOOR LOCK SYSTEM”.
Refer to BL-68, "
Work Support" .
Power door lock operation mode can be changed also on the display.
Refer to AV- 6 0 , "
SETTING SCREEN" . (without navigation system)
Refer to AV- 9 4 , "
Vehicle Electronic Systems" . (with navigation system)
Hazard and Horn Reminder
When the doors are locked or unlocked by key fob, power is supplied to hazard warning lamp and lamp flash
as follows

LOCK operation: C mode (flash twice) or S mode (flash twice)

UNLOCK operation: C mode (flash once) or S mode (do not flash)
BCM outputs to IPDM E/R for horn reminder signal as DATA LINE (CAN H line and CAN L line).
The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).
Operating function of hazard and horn reminder
Hazard and horn reminder do not operate if any door switch is ON (any door is OPEN).
How to change hazard and horn reminder mode
With CONSULT-II
Hazard and horn reminder can be changed using “MULTI ANSWER BACK SET” mode in “WORK SUPPORT”.
Refer to BL-68, "
Work Support" .
Without CONSULT-II
When LOCK and UNLOCK signals are sent from the key fob for more than 2 seconds at the same time, the
hazard and horn reminder mode is changed and hazard warning lamp flashes and horn sounds as follows:
Auto Door Lock Operation
Auto lock function signal is sent for operation when any of the following signals are not sent within 1 minute
after the unlock signal is sent from the key fob:

when door switch is turned ON for open.

when the key switch is turned ON.

when the lock signal is sent from the key fob.
Auto door lock mode can be changed using “AUTO LOCK SET” mode in “WORK SUPPORT”.
Refer to BL-68, "
Work Support" .
Auto door lock mode can be changed also on the display.
C mode S mode
Remote controller
operation Lock Unlock Lock Unlock
Hazard warning lamp
flash Twice Once Twice —
Horn sound Once — — —
SEL153WA

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Refer to AV- 6 0 , "SETTING SCREEN" . (without navigation system)
Refer to AV- 9 4 , "
Vehicle Electronic Systems" . (with navigation system)
Panic Alarm Operation
When key switch is OFF (when ignition key is not inserted in key cylinder), BCM turns on and off horn and
headlamp intermittently with input of PANIC ALARM signal from key fob.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from key fob.
Panic alarm operation mode can be changed using “PANIC ALARM SET” mode in “WORK SUPPORT”.
Refer to BL-68, "
Work Support" .
For detailed description, refer to BL-186, "
VEHICLE SECURITY (THEFT WARNING) SYSTEM" .
Keyless Power Window Down (Open) Operation
When key fob unlock switch is turned ON with ignition switch OFF, and key fob unlock switch is detected to be
on continuously for 3 seconds, the driver's door and passenger's door power windows are simultaneously
opened.
Power window is operated to open and the operation continues as long as the key fob unlock switch is
pressed.
Keyless power window down operation mode can be changed using “PW DOWN SET” mode in “WORK SUP-
PORT”. Refer to BL-68, "
Work Support"
Room Lamp and Ignition Key Ring Illumination Operation
When the following conditions come:

condition of interior lamp switch is DOOR position;

door switch OFF (when all the doors are closed);
Remote keyless entry system turns on interior lamp (for 30 seconds) with input of UNLOCK signal from key
fob. For detailed description, refer to LT- 1 5 9 , "
INTERIOR ROOM LAMP" .
CAN Communication System DescriptionAIS004MC
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 UnitAIS004RM
Refer to LAN-30, "CAN COMMUNICATION" .

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Terminals and Reference Value for BCMAIS004MF
TERMI-
NAL WIRE
COLOR ITEM CONDITION VOLTAGE (V)
Approx.
1PU Key ring illumination output sig-
nal Key ring illumination is lighting. Battery voltage
Key ring illumination is being turned off. 0
11 LG/R Ignition switch Ignition switch is in ACC or ON position Battery voltage
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
18 B Remote keyless entry receiver
(Ground) —0
19 R Remote keyless entry receiver
(Power supply) —
20 Y Remote keyless entry receiver
(Signal) Stand-by
When remote keyless entry receiver
receives signal from keyfob.
37 B/W Key switch ON (Key is inserted in IGN key cylinder)
→ OFF (Key is removed from IGN key
cylinder) Battery voltage
→ 0
38 W/L Ignition switch Ignition switch is in ON or START posi-
tion Battery voltage
39 L CAN H — —
40 R CAN L — —
41 R/B Battery saver output signal 30 minutes after ignition switch is turned
to OFF 0
Ignition switch is in ON position Battery voltage
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
45 G/W Left turn signal lamp When door lock or unlock is operated
using key fob.*
1
(ON → OFF) Battery voltage
→ 0
46 BR/W Right turn signal lamp When door lock or unlock is operated
using key fob.*
1
(ON → OFF) Battery voltage
→ 0
47 Y/R Step lamp output signal Step lamp is lighting. 0
Step lamp is being turned off. Battery voltage
OCC3881D
OCC3879D
OCC3880D

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CONSULT-II Function (BCM)AIS004MH
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
*: Refer to BCS-15, "CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)" .
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Turn ignition switch “OFF”.
2. Connect “CONSULT-II” and “CONSULT-II CONVERTER” to the data link connector.
3. Turn ignition switch “ON”.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “BCM”. If “BCM” is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnosis
position Inspection items and diagnosis mode Description
BCM C/U* Self-diagnosis results Carries out the self-diagnosis.
DATA MONI-
TOR CAN diagnosis support
monitor Displays CAN communication system diagnosis, disabled
transmission status, and communication status of each unit
communicated with BCM.
Selection from menu Displays the input data to BCM on real-time basis.
MULTI REMOTE
ENT DATA MONITOR
Displays the input remote keyless entry system data to BCM
on real–time basis.
ACTIVE TEST Gives a drive to a load to check the operation.
WORK SUPPORT Changes the setting for each function.
PBIB1503E
BCIA0029E
BCIA0030E

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Revision: 2005 July 2005 FX
Trouble Diagnosis Chart by SymptomAIS004MJ
NOTE:

Always check the “Work Flow” before troubleshooting. Refer to BL-69, "Work Flow" .

Always check key fob battery before replacing key fob.
Symptom Diagnoses/service procedure Reference
page
All function of remote keyless entry system do not
operate. 1. Check key fob battery and function.
BL-72
2. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning. BL-84
3. Check remote keyless entry receiver.
BL-79
4. Replace BCM.BCS-16
The new ID of key fob cannot be entered. 1. Check key fob battery and function.
BL-72
2. Check key switch.BL-78
3. Check door switch.BL-74
4. Check ACC switch.BL-73
5. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning. BL-84
6. Replace BCM.
BCS-16
Door lock or unlock does not function with key fob.
(Power door lock system is “OK”.) 1. Check key fob battery and function.
BL-72
2. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning. BL-84
3. Replace BCM.
BCS-16
Hazard and horn reminder does not activate prop-
erly when pressing lock or unlock button of key fob. 1. Check hazard and horn reminder mode.*
*: Hazard and horn reminder mode can be changed.
First check the hazard and horn reminder setting. BL-68
2. Check door switch.
BL-74
3. Replace BCM.BCS-16
Hazard reminder does not activate properly when
pressing lock or unlock button of key fob.
(Horn reminder is “OK”.) 1. Check hazard reminder mode.*
*: Hazard reminder mode can be changed.
First check the hazard reminder setting. BL-68
2. Check hazard function with hazard switch.
BL-83
3. Replace BCM.BCS-16
Horn reminder does not activate properly when
pressing lock button of key fob.
(Hazard reminder is “OK”.) 1. Check horn reminder mode.*
*: Horn reminder can be changed.
First check the horn chirp setting. BL-68
2. Check horn function.
BL-83
3. Check IPDM E/R operation.BL-82
4. Replace BCM.BCS-16

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Panic alarm (horn and headlamp) does not activate
when panic alarm button is continuously pressed. 1. Check panic alarm mode.*
*: Panic alarm mode can be changed.
First check the panic alarm setting. BL-68
2. Check key fob battery and function.
BL-72
3. Check headlamp function.BL-83
4. Check horn function.BL-83
5. Check IPDM E/R operation.BL-82
6. Check key switch.BL-78
7. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning. BL-84
8. Replace BCM.
BCS-16
Auto door lock operation does not activate properly.
(All other remote keyless entry system function is
OK.) 1. Check auto door lock operation mode.*
*: Auto door lock operation mode can be changed.
First check the auto door lock operation setting. BL-68
2. Replace BCM.
BCS-16
Keyless power window down (open) operation does
not activate properly.
(All other remote keyless entry system function is
OK.) 1. Check power window down operation mode.*
*: Power window down operation mode can be changed.
First check the power window down setting. BL-68
2. Check power window function.
GW-15
3. Replace BCM.BCS-16
Map lamp and ignition keyhole illumination opera-
tion does not activate properly. 1. Check map lamp and ignition keyhole illumination operation.
BL-832. Check door switch.BL-74
3. Replace BCM.BCS-16
Symptom Diagnoses/service procedure Reference
page

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Check ACC SwitchAIS004ML
1. CHECK ACC SWITCH
With CONSULT-II
Check ACC switch (“ACC ON SW”) in “DATA MONITOR” mode with
CONSULT-II.
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> ACC switch is OK.
NG >> Check the following.

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

Harness for open or short between BCM and fuse.
Monitor item Condition
ACC SW Ignition switch position is ACC or ON : ON
Ignition switch position is OFF : OFF
PIIA3367E
Item (+)
(–) Condition Voltage (V)
Approx.
Con-
nector Terminal
(Wire color)
BCM M3 11 (LG/R) Ground ACC or ON Battery voltage
OFF 0
PIIA7002E

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Check Door SwitchAIS004MM
CHECK DOOR SWITCH (EXCEPT BACK DOOR SWITCH)
1. CHECK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check door switches (“DOOR SW-DR”, “DOOR SW-AS”, “DOOR
SW-RL” and “DOOR SW-RR”) in “DATA MONITOR” mode with
CONSULT-II.
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.
Monitor item Condition DATA MONITOR
DOOR SW-DR CLOSE ↓
OPEN: OFF
↓
ON
DOOR SW-AS
DOOR SW-RL
DOOR SW-RR
Item Connector Terminals
(Wire color) Door
condition Voltage (V)
(Approx.)
(+) (-)
Driver side B14 62 (W)
Ground CLOSE
↓
OPEN Battery voltage
↓0
Rear LH 63 (P)
Passenger side M3 12 (P/B)
Rear RH 13 (P/L)
PIIA6469E
PIIA7003E

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2. CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM connector.
3. Check continuity between door switch connector B26, B36, B46, B206 terminals 1 and BCM connector M3, B14 terminals 62, 12,
63, 13.
4. Check continuity between door switch connector B26, B36, B46, B206 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCH
Check continuity between door switch terminal 1 and ground part of
door switch.
OK or NG
OK >> Check door switch case ground condition.
NG >> Replace door switch. Driver side door
1 (W) – 62 (W) : Continuity should exist.
Passenger side door
1 (SB) – 12 (P/B) : Continuity should exist.
Rear door LH
1 (P) – 63 (P) : Continuity should exist.
Rear door RH
1 (P) – 13 (P/L) : Continuity should exist.
1 (W, SB, P) – Ground : Continuity should not exist.
PIIA7004E
Terminal Door switch condition Continuity
1 Ground part of door switch Pushed No
Released Yes
PIIA3351E