Infiniti M35/M45 Y50. Manual — part 241
POWER DOOR LOCK SYSTEM
BL-33
C
D
E
F
G
H
J
K
L
M
A
B
BL
Trouble Diagnosis Chart by Symptom
NIS001WY
Always check the “Work Flow” before troubleshooting. Refer to
.
Symptom
Diagnoses service procedure
Reference
page
Power door lock does not operate with door lock and unlock switch.
1.
Power supply and ground circuit check of
BCM.
2.
Check door lock and unlock switch.
3.
Check door lock actuator (driver side)
4.
Replace BCM.
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.
2.
Replace power window main switch.
–
Specific door lock actuator does not operate.
1.
Check door lock actuator.
Driver side
Passenger side
Rear LH
Rear RH
2.
Replace BCM.
Selective unlock operation 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.
2.
Replace BCM.
Fuel lid opener actuator does not operate.
(All door lock actuators operates properly.)
Check fuel lid lock actuator.
BL-34
POWER DOOR LOCK SYSTEM
Power Supply and Ground Circuit Check of BCM
NIS001WZ
1.
CHECK FUSE
Check the following fuse and fusible link.
●
50A fusible link (letter F , located in the fuse and fusible link box)
●
10A fuse [No.21, located in the fuse block (J/B)]
●
10A fuse [No.6, located in the fuse block (J/B)]
●
15A fuse [No.1, located in the fuse block (J/B)]
NOTE:
Refer to
BL-24, "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
3, "POWER SUPPLY ROUTING CIRCUIT"
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connectors.
3.
Check voltage between BCM 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 harness connector and ground.
OK or NG
OK
>> Power supply and ground circuit are OK.
NG
>> Repair or replace BCM ground circuit.
Terminals
Condition
of ignition
switch
position
Voltage (V)
(Approx.)
(+)
(–)
BCM connector
Terminal
M3
11
Ground
ACC
Battery voltage
38
ON
M2
42
OFF
55
PIIB6296E
BCM connector
Terminal
Continuity
M2
52
Ground
Yes
PIIB5935E
POWER DOOR LOCK SYSTEM
BL-35
C
D
E
F
G
H
J
K
L
M
A
B
BL
Check Door Lock and Unlock Switch
NIS001X0
1.
CHECK POWER WINDOW SWITCH OUTPUT SIGNAL
With CONSULT-II
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in DATA MONITOR mode with CONSULT-II.
Without CONSULT-II
1.
Remove key from ignition switch, and the door of driver side and passenger side is closed.
2.
Check signal between BCM connector and ground with oscilloscope when door lock and unlock switch
(driver side and passenger side) 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 (driver side and passenger side) is turned “LOCK” or “UNLOCK”.
OK or NG
OK
>> Door lock and unlock switch is OK.
NG
>> GO TO 2.
Monitor item
Condition
CDL LOCK SW
LOCK
: ON
UNLOCK
: OFF
CDL UNLOCK SW
LOCK
: OFF
UNLOCK
: ON
PIIA7068E
Terminal
Signal
(Reference value)
(+)
(–)
BCM connector
Terminal
M1
22
Ground
PIIB5957E
PIIA1297E
BL-36
POWER DOOR LOCK SYSTEM
2.
CHECK POWER WINDOW SWITCH GROUND
1.
Turn ignition switch OFF.
2.
Disconnect power window main switch and front power window switch (passenger side) connector.
3.
Check continuity between power window main switch connector and ground.
4.
Check continuity between power window sub-switch (front passenger side) connector and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
3.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1.
Disconnect BCM connector.
2.
Check continuity between BCM connector and power window main switch connector.
3.
Check continuity between BCM connector and power window sub-switch (front passenger side) connec-
tor.
OK or NG
OK
>> Replace power window main switch.
NG
>> Repair or replace harness.
Power window main
switch connector
Terminal
Continuity
D11
17
Ground
Yes
PIIB5937E
Power window
sub-switch
(front passenger side)
connector
Terminal
Continuity
D46
11
Ground
Yes
PIIB5941E
A
B
Continuity
BCM connector
Terminal
Power window
main switch
connector
Terminal
M1
22
D10
14
Yes
PIIB5958E
A
B
Continuity
BCM connector
Terminal
Power window
sub- switch
(front passenger side)
connector
Terminal
M1
22
D46
16
Yes
PIIB5959E
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