Infiniti Q45. Manual — part 194
POWER DOOR LOCK SYSTEM
BL-45
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK COMMUNICATION SIGNAL
1.
Connect driver door control unit (LCU01) and malfunctioning door control unit connector.
2.
Check the signal between malfunctioning door control unit connector and ground with oscilloscope.
OK or NG
OK
>> Communication signal is OK.
NG
>>
●
All door control unit (passenger, rear LH and RH) are NG.
→
Replace Driver door control unit.
●
Any of door control unit (passenger, rear LH or RH door control unit) are NG.
→
Replace mal-
functioning door control unit.
Check Door Lock and Unlock Switch
NIS000U5
1.
CHECK DOOR LOCK AND UNLOCK SWITCH
With CONSULT-II
See “DOOR LK SW-LK and UN” in DATA MONITOR mode with CONSULT-II.
●
When door lock and unlock switch is turned to lock:
●
When lock and unlock switch is turned to unlock:
Without CONSULT-II
Check door lock and unlock switch operation in “SWITCH MONITOR” mode.
Refer to
OK or NG
OK
>> Replace driver door control unit (LCU01).
NG
>> Replace door lock and unlock switch.
Passen-
ger door
control
unit
Terminal
Signal
(Reference value)
(+)
(–)
Connector
Terminal
(Wire color)
Ground
D38
11 (G/OR)
Rear LH,
RH door
control
unit
Terminal
(+)
(–)
Connector
Terminal
(Wire color)
Ground
D58 (LH)
D78 (RH)
11 (G/OR)
PIIB0178E
SIIA0591J
DOOK LK SW-LK
: ON
DOOK LK SW-UN
: ON
SEL561W
BL-46
POWER DOOR LOCK SYSTEM
Check Door Lock Actuator (Driver Side)
NIS000U6
1.
CHECK DOOR LOCK ACTUATOR HARNESS
1.
Turn the ignition switch OFF.
2.
Disconnect driver door control unit (LCU01) and door lock actuator connector.
3.
Check continuity between driver door control unit (LCU01) connector D8 terminals 12, 17 and front door
lock actuator connector D11 terminals 1, 3.
4.
Check continuity between driver door control unit (LCU01) con-
nector D8 terminals 12, 17 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness.
2.
CHECK OUTPUT SIGNAL
1.
Connect driver door control unit (LCU01) connector.
2.
Check voltage between driver door control unit (LCU01) connector and ground.
OK or NG
OK
>> Replace front door lock actuator (driver side).
NG
>> Replace driver door control unit (LCU01).
Check Door Lock Actuator (Passenger, Rear LH, RH)
NIS000U7
1.
CHECK DOOR LOCK ACTUATOR HARNESS
1.
Turn the ignition switch OFF.
2.
Disconnect passenger, rear LH, RH door control unit and door lock actuator connectors.
3.
Check continuity between passenger door control unit connector D39 terminals 2, 3 and door lock actua-
tor connector D41 (Passenger), D61 (Rear LH) and D81 (Rear RH) terminals 1, 3.
4.
Check continuity between passenger door control unit connector
terminals 2, 3 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness.
12 (BR) – 3 (BR)
: Continuity should exist.
17 (LG) – 1 (LG)
: Continuity should exist.
12 (BR) – Ground
: Continuity should not exist.
17 (LG) – Ground
: Continuity should not exist.
PIIA2816E
Connector
Terminal
(Wire color)
Door lock
operation
Voltage (V)
(Approx.)
(+)
(–)
D8
17 (LG)
Ground
Free
→
Lock
0
→
Battery voltage
→
0
12 (BR)
Free
→
Unlock
PIIA2817E
1 (SB) – 2 (SB)
: Continuity should exist.
3 (BR) – 3 (BR)
: Continuity should exist.
2 (SB) – Ground
: Continuity should not exist.
3 (BR) – Ground
: Continuity should not exist.
PIIB0242E
POWER DOOR LOCK SYSTEM
BL-47
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK OUTPUT SIGNAL
1.
Connect passenger door control unit connector.
2.
Check voltage between passenger door control unit connector and ground.
OK or NG
OK
>> Replace malfunction door lock actuator.
NG
>> Replace passenger door control unit.
Check Front Door Key Cylinder Switch
NIS000U8
1.
CHECK DOOR KEY CYLINDER SWITCH SIGNAL
With CONSULT-II
Check front door key cylinder switch (“KEY CYL LK-SW”, “KEY CYL UN-SW”) in DATA MONITOR mode in
CONSULT–II.Refer to
●
When key inserted in front key cylinder is turned to LOCK:
●
When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT-II
Check front door key cylinder switch operation in “SWITCH MONITOR” mode. Refer to
OK or NG
OK
>> System is OK.
NG
>> GO TO 2.
Connector
Terminal
(Wire color)
Door lock
operation
Voltage (V)
(Approx.)
(+)
(–)
D39
2 (SB)
Ground
Free
→
Lock
0
→
Battery voltage
→
0
3 (BR)
Free
→
Unlock
PIIB0442E
KEY CYL LK
: ON
KEY CYL UN
: ON
PIIA3149E
BL-48
POWER DOOR LOCK SYSTEM
2.
CHECK DOOR KEY CYLINDER SWITCH
Check continuity between door key cylinder switch terminals 1, 3 and 2.
OK or NG
OK
>> Check the following.
●
Harness between front key cylinder switch and driver
door control unit
●
Harness between front key cylinder switch and ground
NG
>> Replace front door key cylinder switch.
Check Key Switch
NIS000U9
1.
CHECK KEY SWITCH
With CONSULT-II
Check key switch “IGN KEY SW” in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK
>> Key switch is OK.
NG
>> GO TO 2.
Terminals
Condition
Continuity
1
2
Key is turned to UNLOCK
Yes
Key is turned to LOCK or neutral.
No
3
Key is turned to LOCK.
Yes
Key is turned to UNLOCK or neutral.
No
PIIA3148E
Key is inserted in ignition key
cylinder
: IGN KEY SW ON
Key is removed from ignition
key cylinder
: IGN KEY SW OFF
PIIA4243E
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
M4
69 (PU/W)
Ground
Key is inserted
Battery voltage
Key is removed
0
PIIA2820E
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