door lock INFINITI QX56 2006 Factory Owner's Guide

BL-30
POWER DOOR LOCK SYSTEM
Revision: November 20092006 QX56
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector M20 terminals 57, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Connector Terminals
Voltage (V)
(Approx.)
(+) (-)
M20 57
Ground Battery voltage
70
LIIA1039E
Connector TerminalsContinuity
M20 67Ground Yes
LIIA1040E

POWER DOOR LOCK SYSTEMBL-31
C
DE
F
G H
J
K L
M A
B
BL
Revision: November 2009 2006 QX56
Door Switch CheckEIS005ZG
1. CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-II
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW") in DATA MONITOR mode with CONSULT –II.Refer to BL-27, "
DATA MONITOR" .

When doors are open:

When doors are closed:
Without CONSULT-II
Check voltage between BCM connector M18 or M19 terminals 12,
13, 43, 47, 48 and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2. DOOR SW-DR : ON
DOOR SW-AS : ON
DOOR SW-RL : ON
DOOR SW-RR : ON
BACK DOOR SW : ON
DOOR SW-DR : OFF
DOOR SW-AS : OFF
DOOR SW-RL : OFF
DOOR SW-RR : OFF
BACK DOOR SW : OFF
LIIA0665E
Connector Item
Terminals
ConditionVoltage (V)
(Approx.)
(+) ( –)
M19 Back door
latch (door
ajar switch) 43
Ground Open
↓
Closed 0
↓
Battery voltage
Front door
switch LH 47
Rear door switch LH 48
M18 Front door
switch RH 12
Rear door
switch RH 13
LIIA1041E

BL-32
POWER DOOR LOCK SYSTEM
Revision: November 20092006 QX56
2. CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2 or back door latch connector (C) D503 terminal 7 and BCM connectors (A) M18, M19
terminals 12, 13, 43, 47 and 48.
4. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2
or back door latch connector (C) D503 terminal 7 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCHES
FRONT AND REAR DOORS
Check continuity between front or rear door switch terminal 2 and
exposed metal of switch while pressing and releasing switch.
BACK DOOR
Check continuity between back door latch connector (A) D503 termi-
nals 7 and 8 while pressing (closing back door) and releasing (open-
ing back door) switch.
OK or NG
OK >> (Front and rear doors) Switch circuit is OK.
OK >> (Back door) GO TO 4.
NG >> Replace door switch. 2 - 12
: Continuity should exist.
2 - 13 : Continuity should exist.
2 - 47 : Continuity should exist.
2 - 48 : Continuity should exist.
7 - 43 : Continuity should exist.
2 - Ground : Continuity should not exist.
7 - Ground : Continuity should not exist.
WIIA0750E
Door switch is released : Continuity should exist.
Door switch is pushed : Continuity should not exist.
WIIA0644E
When back door is open : Continuity should exist.
When back door is closed : Continuity should not exist.
WIIA0752E

POWER DOOR LOCK SYSTEMBL-33
C
DE
F
G H
J
K L
M A
B
BL
Revision: November 2009 2006 QX56
4. CHECK BACK DOOR SWITCH GROUND
Check continuity between back door latch connector terminal 8 and
ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> Repair or replace harness.
Key Switch (Insert) CheckEIS005ZH
1. CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT –II. Refer to BL-27, "
DATA MONI-
TOR" .

When key is inserted to ignition key cylinder:

When key is removed from ignition key cylinder:
Without CONSULT-II
Check voltage between BCM connector M18 terminal 37 and
ground.
OK or NG
OK >> Key switch (insert) circuit is OK.
NG >> GO TO 2. 8 - Ground
: Continuity should exist.
LIIA0828E
KEY ON SW : ON
KEY ON SW : OFF
LIIA0169E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(+) ( –)
M18 37 Ground Key is inserted. Battery voltage
Key is removed. 0
LIIA0567E

BL-34
POWER DOOR LOCK SYSTEM
Revision: November 20092006 QX56
2. CHECK KEY SWITCH (INSERT)
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid.
3. Check continuity between key switch and key lock solenoid terminals 3, 4.
OK or NG
OK >> Repair or replace harness.
NG >> Replace key switch.
Door Lock/Unlock Switch CheckEIS005ZI
1. CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
With CONSULT-II
Check door lock/unlock switch ("CDL LOCK SW", "CDL UNLOCK SW") in DATA MONITOR mode in CON-
SULT –II. Refer to BL-27, "
DATA MONITOR"

When door lock/unlock switch is turned to LOCK:

When door lock/unlock switch is turned to UNLOCK:
Without CONSULT-II
1. Remove key from ignition key cylinder.
2. Check the signal between BCM connector M18 terminal 22 and ground with oscilloscope when door lock/ unlock switch is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figure below can be detected during 10 seconds just after the door lock/unlock switch is turned to LOCK or UNLOCK.
OK or NG
OK >> Door lock and unlock switch circuit is OK.
NG >> GO TO 2.
Terminals Condition Continuity
3 – 4 Key is inserted.
Yes
Key is removed. No
LIIA1044E
CDL LOCK SW:ON
CDL UNLOCK SW :ON
PIIA6538E
ConnectorTerminals
Voltage (V)
(+) ( –)
M18 22 Ground
PIIA6379EPIIA1297E

POWER DOOR LOCK SYSTEMBL-35
C
DE
F
G H
J
K L
M A
B
BL
Revision: November 2009 2006 QX56
2. CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch or power window and door lock/unlock switch RH
3. Check continuity between main power window and door lock/ unlock switch connector D8 terminal 17 and ground.
4. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and ground
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK POWER WINDOW BUS CIRCUIT FOR OPEN
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock switch connector D7
terminal 14.
3. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock switch RH connector D105
terminal 16.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness. 17 - Ground
: Continuity should exist.
LIIA0392E
11 - Ground: Continuity should exist.
LIIA1140E
22 - 14 : Continuity should exist.
LIIA0394E
22 - 16: Continuity should exist.
LIIA1271E

BL-36
POWER DOOR LOCK SYSTEM
Revision: November 20092006 QX56
4. CHECK POWER WINDOW BUS CIRCUIT FOR SHORT
Check continuity between BCM connector M18 terminal 22 and
ground.
OK or NG
OK >> Replace main power window and door lock/unlock switch or power window and door lock/unlock switch RH
NG >> Repair or replace harness.
Glass Hatch Switch Circuit InspectionEIS00AL6
NOTE:
Repair any front door lock actuator RH malfunction before proceeding with this diagnosis.
1. CHECK GLASS HATCH SWITCH
1. Turn ignition switch OFF.
2. Insure front door lock actuator RH is in the unlock position.
3. Check continuity between glass hatch switch terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK HARNESS CONTINUITY
1. Disconnect glass hatch switch.
2. Disconnect BCM.
3. Check continuity between BCM connector M18 (A) terminal 30 and glass hatch switch connector D710 (B) terminal 2.
4. Check continuity between BCM connector M18 (A) terminal 30 and ground.
OK or NG
OK >> Glass hatch switch circuit is OK.
NG >> Repair or replace harness. 22 - Ground
: Continuity should not exist.
LIIA2359E
Connec-
tor Terminals
ConditionContinuity
(+) (– )
D710 2 Ground With the glass hatch switch
pressed
Ye s
With the glass hatch switch
released No
LIIA2399E
30 - 2
: Continuity should exist.
30 - Ground : Continuity should not exist.
LIIA2400E

POWER DOOR LOCK SYSTEMBL-37
C
DE
F
G H
J
K L
M A
B
BL
Revision: November 2009 2006 QX56
3. CHECK GLASS HATCH SWITCH
1. Disconnect glass hatch switch.
2. Check continuity between glass hatch switch harness connector D710 terminal 1 and ground.
OK or NG
OK >> Replace glass hatch switch.
NG >> GO TO 4.
4. CHECK HARNESS CONTINUITY
1. Disconnect front door lock actuator RH.
2. Check continuity between glass hatch switch connector D710 (A) terminal 1 and front door lock actuator RH connector D114
(B) terminal 4
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness.
5. CHECK FRONT DOOR LOCK ACTUATOR RH GROUND CIRCUIT
Check continuity between front door lock actuator RH connector
D114 terminal 5 and ground
OK or NG
OK >> Replace front door lock actuator RH. Refer to BL-131,
"Removal and Installation" .
NG >> Repair or replace harness. 1 - Ground
: Continuity should exist.
LIIA2401E
1 - 4 : Continuity should exist.
LIIA2402E
5 - Ground: Continuity should exist.
LIIA2403E

BL-38
POWER DOOR LOCK SYSTEM
Revision: November 20092006 QX56
Front Door Lock Assembly LH (Actuator) CheckEIS005ZK
1. CHECK DOOR LOCK ACTUATOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M20 terminals 59, 65 and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
2. CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and front door lock assembly LH (actuator).
2. Check continuity between BCM connector M20 terminals 59, 65 and front door lock assembly LH (actuator) connector D14 termi-
nals 2, 3.
3. Check continuity between BCM connector M20 terminals 59, 65 and ground.
OK or NG
OK >> Replace front door lock assembly LH (actuator). Refer to BL-131, "FRONT DOOR LOCK" .
NG >> Repair or replace harness.
Connector Te r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
M20 59
Ground Driver door lock/unlock
switch is turned to
UNLOCK
0
→ Battery voltage
65 Driver door lock/unlock
switch is turned to LOCK 0
→ Battery voltage
LIIA1046E
Connector Terminals Connector Terminals Continuity
M20 59
D14 2Y
es
65 3Yes
Connector Terminals Continuity
M20 59
Ground No
65 No
LIIA1574E

POWER DOOR LOCK SYSTEMBL-39
C
DE
F
G H
J
K L
M A
B
BL
Revision: November 2009 2006 QX56
Front Door Lock Actuator RH CheckEIS005ZL
1. CHECK FRONT DOOR LOCK ACTUATOR RH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M20 terminals 65, 66 and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
2. CHECK FRONT DOOR LOCK ACTUATOR RH HARNESS
1. Disconnect BCM and front door lock actuator RH.
2. Check continuity between BCM connector M20 terminals 65, 66 and front door lock actuator RH D114 terminals 2, 3.
3. Check continuity between BCM connector M20 terminals 65, 66 and ground.
OK or NG
OK >> Replace front door lock actuator RH. Refer to BL-131, "FRONT DOOR LOCK" .
NG >> Repair or replace harness.
Connector Terminals
ConditionVoltage (V)
(Approx.)
(+) (-)
M20 65
Ground Door lock/unlock switch is
turned to LOCK
0
→ Battery voltage
for 300 ms
66 Door lock/unlock switch is
turned to UNLOCK 0
→ Battery voltage
for 300 ms
LIIA1048E
Terminals Continuity
65 3 Yes
66 2 Yes
Terminals Continuity
65 Ground No
66 No
LIIA1479E