door lock INFINITI FX35 2008 Owner's Guide

POWER DOOR LOCK SYSTEMBL-41
< SERVICE INFORMATION >
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3. Check voltage between back door switch connector D109 termi- nal 7 and ground. (Check harness for open.)
4. Check continuity between back door switch connector D109 ter- minal 7 and ground. (Check harness for short.)
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK BACK DOOR SWITCH
Check continuity between back door switch terminals 7 and 8.
OK or NG
OK >> GO TO 4.
NG >> Replace back door closure motor (door switch).
4.CHECK BACK DOOR SWITCH GROUND HARNESS
Check continuity between back door switch connector D109 terminal
8 and ground. 7 (L) – Ground : Approx. 9V
PIIA6474E
7 (L) – Ground : Continuity should not exist.
PIIA6475E
Terminal Back door condition Continuity
78 Closed No
Opened Yes
PIIA6476E
8 (B) – Ground : Continuity should exist.
PIIA6477E
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BL-42
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Key SwitchINFOID:0000000001327804
1.CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-III
Check ignition key switch “KEY ON SW” in “DATA MONITOR” mode with CONSULT-III.
 When key is inserted in ignition key cylinder
 When key is removed from ignition key cylinder
Without CONSULT-III
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)
2.CHECK KEY SWITCH (WITH INTELLIGENT KEY)
1. Disconnect key switch and ignition knob switch connector.
2. Check continuity between key switch or 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 or key switch and ignition knob switch.
3.CHECK KEY SWITCH (WITHO UT INTELLIGENT KEY)
KEY ON SW : ON
KEY ON SW : OFF
Connector
Te r m i n a l
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
PIIA6378E
Terminal Condition of key switch Continuity
34 Key is inserted in IGN key cylinder. Yes
Key is removed from IGN key cylinder. No
PIIA6140E
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POWER DOOR LOCK SYSTEMBL-43
< SERVICE INFORMATION >
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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 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 or key switch and ignition knob switch.
Check Door Lock and Unlock SwitchINFOID:0000000001327805
1.CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL
With CONSULT-III
Check door lock and unlock switch (“CDL LOCK SW ” and “CDL UNLOCK SW”) in DATA MONITOR mode with
CONSULT-III.
 When door lock and unlock switch is turned to LOCK:
 When door lock and unlock switch is turned to UNLOCK:
Without CONSULT-III
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.
Terminal Condition of key switch Continuity
12 Key is inserted in IGN key cylinder. Yes
Key is removed from IGN key cylinder. No
PIIA2627E
CDL LOCK SW : ON
CDL UNLOCK SW : ON
Connector Te r m i n a l
(Wire color) Signal
(Reference value)
(+) (–)
M3 22 (OR) Ground
PIIA6379E
PIIA1297E
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BL-44
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
2.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM, power window main switch and front power window switch connectors.
3. Check continuity between BCM connector M3 terminal 22 and power window main switch (door lock and unlock switch) con-
nector D6 terminal 14.
4. Check continuity between power window main switch (door lock and unlock switch) connector D6 terminal 14 and ground.
5. Check continuity between BCM connector M3 terminal 22 and front power window switch (door lock and unlock switch) con-
nector D36 terminal 16.
6. Check continuity between front power window switch (door lock and unlock switch) connector D36 terminal 16 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR LOCK AND UNLOCK SWITCH GROUND HARNESS
 Check continuity between power window main switch (door lock and unlock switch) connector D7 terminal 17 and ground.
 Check continuity between power window sub-switch (front passen- ger side) (door lock and unlock switch) connector D36 terminal 11
and ground.
OK or NG
22 (OR) – 14 (Y) : Continuity should exist.
14 (Y) – Ground : Continuity should not exist.
PIIB0405E
22 (OR) – 16 (Y) : Continuity should exist.
16 (Y) – Ground : Continuity should not exist.
PIIB0406E
17 (B) – Ground : Continuity should exist.
PIIA6201E
11 (B) – Ground : Continuity should exist.
PIIA6202E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER DOOR LOCK SYSTEMBL-45
< SERVICE INFORMATION >
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OK >> Replace power window main switch or power window sub-switch.
NG >> Repair or replace harness.
Check Door Lock Actuator (Driver Side)INFOID:0000000001327806
1.CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and front door lock actuator (driver side) connector.
3. Check continuity between BCM connector M4 terminals 44, 50
and front door lock actuator (driver side) connector D10 termi-
nals 2, 3.
4. Check continuity between BCM connector M4 terminals 44, 50 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2.CHECK OUTPUT SIGNAL
1. Connect BCM and door lock actuator (driver side) connector.
2. Check voltage between BCM connector M4 terminals 44, 50 and ground.
OK or NG
OK >> Check harness connection.
NG >> Replace BCM.
Check Door Lock Actuator (Pa ssenger Side and Rear LH/RH)INFOID:0000000001327807
1.CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM and each door lo ck actuator connectors.
44 (Y) – 2 (GY) : Continuity should exist.
50 (PU) – 3 (PU) : Cont
inuity should exist.
44 (Y) – Ground : Continuity should not exist.
50 (PU) – Ground : Continuity should not exist.
PIIA6539E
Con-
nector Te r m i n a l
(Wire color) Condition Voltage (V)
(Approx.)
(+) (–)
M4 44
(Y)
Ground Driver door lock/unlock
switch is turned to UN-
LOCK.
0
→ Battery voltage → 0
50
(PU) Driver door lock/unlock
switch is turned to
LOCK.
0
→ Battery voltage → 0
PIIA6383E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-46
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
2. Check continuity between BCM connector M4 terminals 50, 51and front door lock actuator passenger side, rear door lock actu-
ator LH/RH connectors D40, D52, D72 terminals 2, 3.
3. Check continuity between BCM connector M4 terminals 50, 51 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2.CHECK DOOR LOCK ACTUATOR SIGNAL
Check voltage between BCM connector M4 terminals 50, 51 and
ground.
OK or NG
OK >> Replace front door lock assembly (passenger side) or rear door lock actuator LH/RH.
NG >> Replace BCM.
Check Fuel Lid Lock ActuatorINFOID:0000000001327808
1.CHECK FUEL LID LOCK ACTUATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and fuel lid lock actuator connector.
3. Check continuity between BCM connector M4 terminals 44, 50 and fuel lid lock actuator connector B70 terminals 1, 2.
4. Check continuity between BCM connector M4 terminals 44, 50 and ground.
OK or NG
50 (PU) – 3 (PU) : Cont inuity should exist.
51 (W/B) – 2 (L or Y) : Co ntinuity should exist.
50 (PU) – Ground : Continuity should not exist.
51 (W/B) – Ground : Continuity should not exist.
PIIA6540E
Con-
nector Te r m i n a l
(Wire color) Condition Voltage (V)
(Approx.)
(+) (–)
M4 50
(PU) Ground Door lock/unlock switch
is turned to LOCK.
0
→ Battery voltage → 0
51
(W/B) Door lock/unlock switch
is turned to UNLOCK.
0
→ Battery voltage → 0
PIIA6385E
44 (Y) – 2 (L) : Conti nuity should exist.
50 (PU) – 1 (PU) : Cont inuity should exist.
44 (Y) – Ground : Continui ty should not exist.
50 (PU) – Ground : Contin uity should not exist.
PIIA6386E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER DOOR LOCK SYSTEMBL-47
< SERVICE INFORMATION >
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OK >> Replace fuel lid lock actuator.
NG >> Repair or replace harness.
Check Front Door Key Cylinder Switch (Lock)INFOID:0000000001327809
1.CHECK FRONT DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK SIGNAL)
With CONSULT-III
Check front door key cylinder switch LH (“KEY CYL LK SW”) in “DATA MONITOR” mode with CONSULT-III.
 When key cylinder switch is turned to “LOCK”.
Without CONSULT-III
Check voltage between power window main switch (door lock and
unlock switch) connector and ground.
OK or NG
OK >> Front door key cylinder switch ci rcuit 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.
Check Front Door Key Cylinder Switch (Unlock)INFOID:0000000001327810
1.CHECK FRONT DOOR KEY CYLINDER SWITCH INPUT SIGNAL (UNLOCK SIGNAL)
With CONSULT-III
Check front door key cylinder switch driver side (“KEY CYL UN-SW”) in “DATA MONITOR” mode with CON-
SULT-III.
 When key cylinder switch is turned to “UNLOCK”. KEY CYL LK-SW : ON
Connector
Terminal (Wire color)
Front door key cylinder
switch position Voltage (V)
(Approx.)
(+) (-)
D6 4 (P) Ground Neutral / Unlock 5
Lock 0
PIIA6203E
Terminal Front door key cylinder switch position Continuity
15 Neutral / Unlock No
Lock Yes
PIIA6543E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-48
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
Without CONSULT-III
Check voltage between main power window switch (door lock and
unlock switch) connector and ground.
OK or NG
OK >> Front door key cylinder switch circuit driver side (unlock) 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 5 and 6.
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.
Check Select Unlock Relay CircuitINFOID:0000000001327811
1.CHECK SELECT UNLOCK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM, rear door lock actuator (LH and RH), and passenger side select unlock relay connector.
3. Check continuity between BCM connector M4 terminal 50 and passenger side select unlock relay connector M30 terminal 4.
4. Check continuity between passenger side select unlock relay connector M30 terminal 4 and ground.KEY CYL UN-SW : ON
Connector
Terminal (Wire color)
Front door key cylinder
switch position Voltage (V)
(Approx.)
(+) (-)
D6 6 (OR) Ground Neutral / Lock 5
Unlock 0
PIIA6205E
Terminal Front door key cylinder switch position Continuity
56 Neutral / Lock No
Unlock Yes
PIIA6544E
50 (PU) – 4 (PU) : Continuity should exist.
4 (PU) – Ground : Continuity should not exist.
PIIB0403E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER DOOR LOCK SYSTEMBL-49
< SERVICE INFORMATION >
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5. Check continuity between passenger side select unlock relay connector M30 terminal 3 and rear door lock actuator connector
D52 (LH), D72 (RH) terminal 3.
6. Check continuity between passenger side unlock relay connec- tor M30 terminal 3 and ground.
OK or NG
OK >> Check passenger side select unlock relay.
NG >> Repair or replace harness. 3 (PU) – 3 (PU) : Cont
inuity should exist.
3 (PU) – Ground : Continuity should not exist.
PIIB8506E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

REMOTE KEYLESS ENTRY SYSTEMBL-51
< SERVICE INFORMATION >
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 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 block (J/B)].
 to Horn relay terminal 2
 through 15A fuse (No. 34, 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 block (J/B)].
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 receiv er (the antenna of the system is built in remote keyless
entry receiver).
 to BCM terminal 20
 from remote keyless entry syst em 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
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-60, "
CONSULT-III Function (BCM)".
Power door lock operation mode can be changed also on the display.
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
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