bcm INFINITI FX35 2004 Owner's Guide

POWER DOOR LOCK SYSTEM
BL-37
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B
BL
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-38
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
Preliminary CheckAIS004LY
FUSE AND FUSIBLE LINK CHECK
1. FUSE INSPECTION
Check the following fuse and fusible link.
NOTE:
Refer to BL-22, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM connectors M4 terminals 42, 55
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace BCM power supply circuit.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connectors M4 terminals 49, 52 and
ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace BCM ground circuit.
Unit Signal name No, Location
BCMBattery power supply 22 (15A) Fuse block (J/B)
Battery power supply M (50A) Fuse and fusible link box
BCM – Ground
42 (L/R) – Ground : Battery voltage
55 (G) – Ground : Battery voltage
PIIA6374E
BCM – Ground
49 (B) – Ground : Continuity should exist.
52 (B) – Ground : Continuity should exist.
ConnectorTerminals
(Wire color)
Continuity
(+) (–)
M449 (B)
Ground Yes
52 (B)
PIIA6375E

POWER DOOR LOCK SYSTEM
BL-39
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Revision: 2004 November 2004 FX35/FX45
CONSULT-II FunctionAIS004LZ
Power door lock system check with data monitor and active test can be performed by combining data recep-
tion and command transmission via communication line from BCM.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
in self-diagnosis depending on control unit which carry out CAN communication.
1. With 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” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnosis
partInspection item, self-diagnosis
modeContent
Door lockDATA MONITOR Displays BCM input data on real-time basis.
ACTIVE TEST Sends drive signals to door lock actuator to perform operation check.
PBIB1503E
MBIB0233E
LIIA0033E

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-42
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check Door SwitchAIS004M1
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
DOOR SW-DR
CLOSE → OPEN: OFF → ON DOOR SW-AS
DOOR SW-RL
DOOR SW-RR
Item ConnectorTerminals
(Wire color)Door
conditionVoltage (V)
(Approx.)
(+) (-)
Driver side
B1462 (W)
GroundCLOSE
↓
OPENBattery voltage
↓
0 Rear LH 63 (P)
Passenger side
M312 (P/B)
Rear RH 13 (P/L)
PIIA6469E
PIIA7003E

POWER DOOR LOCK SYSTEM
BL-43
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Revision: 2004 November 2004 FX35/FX45
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 switchPushed No
Released Yes
PIIA3351E

BL-44
POWER DOOR LOCK SYSTEM
Revision: 2004 November 2004 FX35/FX45
CHECK BACK DOOR SWITCH
1. CHECK BACK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check door switches (“BACK DOOR SW”) 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
BACK DOOR SW CLOSE → OPEN: OFF → ON
PIIA6472E
Item ConnectorTerminal
(Wire color)Back door
conditionVoltage (V)
(Approx.)
(+) (-)
Back door switch B14 58 (L) GroundCLOSE
↓
OPEN9
↓
0
PIIA6473E

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
BL-47
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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