INFINITI FX35 2006 Service Manual

POWER DOOR LOCK SYSTEM BL-37
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Revision: 2006 December 2006 FX35/FX45
Work FlowNIS001M4
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-38, "
Trouble Diagnosis Chart by Symptom" .
4. Does power door lock system operate normally? YES: GO TO 5.
NO: GO TO 3.
5. INSPECTION END
CONSULT-II Function (BCM)NIS001M5
CONSULT-II can display each diagnostic item using the diagnostic test modes shown.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
CONSULT-II APPLICATION ITEMS
Work Support
Data Monitor
*: With Intelligent Key system BCM diagnosis
test item Check item diagnosis test mode Content
Door lock DATA MONITOR Displays the input data of BCM real time.
ACTIVE TEST Gives a drive signal to a load to check the operation.
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-38
POWER DOOR LOCK SYSTEM
Revision: 2006 December 2006 FX35/FX45
Active Test
Trouble Diagnosis Chart by SymptomNIS001M6
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 side Test item in “DOOR LOCK” Content
ALL LOCK This test is able to check all door lock actuators lock operation.
These actuators lock when “ALL LOCK” on CONSULT-II screen is touched.
ALL UNLOCK This test is able to check all door lock actuators unlock operation.
These actuators unlock when “ALL UNLOCK” on CONSULT-II screen is touched.
DR UNLOCK This 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 UNLOCK This 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.
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-37
2. Check BCM power supply and ground cir-
cuit BL-39
3. Check key switch.
BL-44
4. Check door switch. BL-40
5. Replace BCM.BCS-15
Power door lock does not operate with door lock and unlock switch. 2. Check BCM power supply and ground cir-
cuit BL-392. Check door lock and unlock switch.
BL-39
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-51*1
BL-52*2
2. Replace power window main switch. –
Specific door lock actuator does not operate. 1. Check door lock actuator.
BL-48
*3
BL-49*4
2. Replace BCM.
BCS-15
Rear door lock actuator (LH and RH) does not operate.*
*: Only model with intelligent key system. 1. Check select unlock relay circuit.
BL-53
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-37
2. Replace BCM.
BCS-15
Fuel lid lock actuator does not operate.
(All door lock actuators operates properly.) 1.Check fuel lid lock actuator.
BL-50

POWER DOOR LOCK SYSTEM BL-39
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Revision: 2006 December 2006 FX35/FX45
Check BCM Power Supply and Ground CircuitNIS001M7
1. CHECK FUSE AND FUSIBLE LINK

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

Check 15A fuse [No. 22, located in the fuse block (J/B)].
NOTE:
Refer to BL-21, "
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. 42 (L/R) – Ground : Battery voltage
55 (G) – Ground : Battery voltage
PIIA6374E
49 (B) – Ground : Continuity should exist.
52 (B) – Ground : Continuity should exist.
PIIA6375E

BL-40
POWER DOOR LOCK SYSTEM
Revision: 2006 December 2006 FX35/FX45
Check Door SwitchNIS001M8
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 → OFF
OPEN → 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

POWER DOOR LOCK SYSTEM BL-41
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Revision: 2006 December 2006 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 switch Pushed No
Released Yes
PIIA3351E

BL-42
POWER DOOR LOCK SYSTEM
Revision: 2006 December 2006 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
→ OFF
OPEN → ON
PIIA6472E
Item Connector Terminal
(Wire color) Back door
condition Voltage (V)
(Approx.)
(+) (-)
Back door switch B14 58 (L) Ground CLOSE
↓
OPEN 9
↓ 0
PIIA6473E

POWER DOOR LOCK SYSTEM BL-43
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Revision: 2006 December 2006 FX35/FX45
2. CHECK BACK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect back door switch connector.
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). 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

BL-44
POWER DOOR LOCK SYSTEM
Revision: 2006 December 2006 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 SwitchNIS001M9
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
PIIA6470E
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
PIIA6378E

POWER DOOR LOCK SYSTEM BL-45
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Revision: 2006 December 2006 FX35/FX45
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 (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 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.
Terminal Condition of key switch Continuity
34 Key is inserted in IGN key cylinder. Yes
Key is removed from IGN key cylinder. No
PIIA6140E
Terminal Condition of key switch Continuity
12 Key is inserted in IGN key cylinder. Yes
Key is removed from IGN key cylinder. No
PIIA2627E

BL-46
POWER DOOR LOCK SYSTEM
Revision: 2006 December 2006 FX35/FX45
Check Door Lock and Unlock SwitchNIS001MA
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
Connector Terminal
(Wire color) Signal
(Reference value)
(+) (–)
M3 22 (OR) Ground
PIIA6379E
PIIA1297E