Infiniti QX56 (JA60). Manual — part 757
PWC-40
< COMPONENT DIAGNOSIS >
POWER WINDOW SERIAL LINK
Is the inspection result normal?
YES
>> Power window serial link is OK.
NO
>> GO TO 2
2.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and main power window and door lock/unlock
switch.
3. Check continuity between BCM connector and main power win-
dow and door lock/unlock switch connector.
4. Check continuity between BCM connector and ground.
Is the inspection result normal?
YES
>> Replace main power window and door lock/unlock switch. Refer to
NO
>> Repair or replace harness.
FRONT POWER WINDOW SWITCH
FRONT POWER WINDOW SWITCH : Description
INFOID:0000000005147220
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM
transmit and receive the signal by power window serial link.
The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and
power window and door lock/unlock switch RH
• Keyless power window down signal
The signal mentioned below is transmitted from main power window and door lock/unlock switch to power win-
dow and door lock/unlock switch RH
• Front door window RH operation signal
• Power window control by key cylinder switch signal
• Retained power operation signal
• Power window lock switch signal
FRONT POWER WINDOW SWITCH : Component Function Check
INFOID:0000000005147221
1.
CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL
Terminal
Signal
(Reference value)
(+)
(–)
BCM connector
Terminal
M18
22
Ground
PIIA1297E
BCM connector
Terminal
Main power window and door
lock/unlock switch connector
Terminal
Continuity
M18 (A)
22
D7 (B)
14
Yes
ALKIA1026ZZ
BCM connector
Terminal
Ground
Continuity
M18 (A)
22
No
POWER WINDOW SERIAL LINK
PWC-41
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
PWC
N
O
P
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “DATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to
BCS-17, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"
.
Is the inspection result normal?
YES
>> Power window serial link is OK.
NO
>> Refer to
PWC-41, "FRONT POWER WINDOW SWITCH : Diagnosis Procedure"
FRONT POWER WINDOW SWITCH : Diagnosis Procedure
INFOID:0000000005147222
Regarding Wiring Diagram information, refer to
.
1.
CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH
1. Remove Intelligent Key or ignition key, and close the front door
LH and RH.
2. Check signal between BCM connector and ground with oscillo-
scope when door lock and unlock switch (LH and RH) is turned
to “LOCK” or “UNLOCK”.
3. Check that signals which are shown in the figure below can be
detected during 10 second just after door lock and unlock switch
(LH and RH) is turned to “LOCK” or “UNLOCK”.
Is the inspection result normal?
YES
>> Power window serial link is OK.
NO
>> GO TO 2
2.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between BCM connector and power window
and door lock/unlock switch RH connector.
Monitor item
Condition
CDL LOCK SW
LOCK
: ON
UNLOCK
: OFF
CDL UNLOCK SW
LOCK
: OFF
UNLOCK
: ON
Terminal
Signal
(Reference value)
(+)
(–)
BCM connector
Terminal
M18
2
Ground
LIIA0391E
PIIA1297E
BCM connector
Terminal
Power window and door
lock/unlock switch RH con-
nector
Terminal
Continuity
M18 (A)
22
D105 (B)
16
Yes
ALKIA1027ZZ
PWC-42
< COMPONENT DIAGNOSIS >
POWER WINDOW SERIAL LINK
4. Check continuity between BCM connector and ground.
Is the inspection result normal?
YES
>> Replace main power window and door lock/unlock switch. Refer to
NO
>> Repair or replace harness.
REAR POWER WINDOW SWITCH
REAR POWER WINDOW SWITCH : Power Window Serial Link Check Rear LH or RH
INFOID:0000000005147223
Regarding Wiring Diagram information, refer to
.
1.
CHECK REAR POWER WINDOW CONTROL UNIT LH OR RH
1. Replace with operative rear power window control unit LH or RH.
2. Does window operate normally?
Is the inspection result normal?
YES
>> Replace rear power window control unit LH or RH.
NO
>> GO TO 2
2.
CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and
rear power window control unit LH or RH.
3. Check continuity between main power window and door lock/
unlock switch connector D7 terminal 14 and rear power window
control unit LH or RH connector D209 (LH) or D309 (RH) termi-
nal 1.
Is the inspection result normal?
YES
>> Replace main power window and door lock/unlock
switch. Refer to
PWC-117, "Removal and Installation"
.
NO
>> Repair or replace harness.
BCM connector
Terminal
Ground
Continuity
M18 (A)
22
No
14 - 1
: Continuity should exist.
LIIA1390E
POWER WINDOW LOCK SWITCH
PWC-43
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
PWC
N
O
P
POWER WINDOW LOCK SWITCH
Description
INFOID:0000000005147224
Ground circuit of main power window and door lock/unlock switch shuts off if power window lock switch of
main power window and door lock/unlock switch is operated. This inhibits all operation, except for the main
switch.
Component Function Check
INFOID:0000000005147225
1.
CHECK POWER WINDOW LOCK SIGNAL
Exchanges for a normal main power window and door lock/unlock switch, and operation is checked.
Does power window lock operate?
YES
>> Replace main power window and door lock/unlock switch. Refer to
NO
>> Check condition of harness and connector.
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