2009 INFINITI QX56 Factory Service Manual

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Page 2985 of 4171

INFINITI QX56 2009 Factory Service Manual
DOOR KEY CYLINDER SWITCHPWC-37
< COMPONENT DIAGNOSIS >
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1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and front door lock as

Page 2986 of 4171

INFINITI QX56 2009 Factory Service Manual
PWC-38
< COMPONENT DIAGNOSIS >
DOOR KEY CYLINDER SWITCH
Check front door lock assembly LH (key cylinder switch).
Is the inspection result normal?
YES >> Key cylinder switch is OK.
NO >> Replace front

Page 2987 of 4171

INFINITI QX56 2009 Factory Service Manual
POWER WINDOW SERIAL LINKPWC-39
< COMPONENT DIAGNOSIS >
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PWC
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POWER WINDOW SERIAL LINK
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : DescriptionINFOID:0000000003776012

POWER WINDOW SERIAL LINKPWC-39
< COMPONENT DIAGNOSIS >
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PWC
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POWER WINDOW SERIAL LINK
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : DescriptionINFOID:0000000003776012
Main power window and door lock/unlock switch, pow er 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
Power window lock switch signal
Retained power operation signal
POWER WINDOW MAIN SWITCH : Component Function CheckINFOID:0000000003776013
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “D ATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to BCS-17, "DOOR LOCK : CONSULT-II I Function (BCM - DOOR LOCK)"
.
Is the inspection result normal?
YES >> Power window serial link is OK.
NO >> Refer to PWC-39, "POWER WINDOW MAIN SWITCH : Diagnosis Procedure"
.
POWER WINDOW MAIN SWITCH : Diagnosis ProcedureINFOID:0000000003776014
Power Window Serial Link Check
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
1. Remove Intelligent Key or ignition key, and close 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”.
Monitor item Condition
CDL LOCK SW LOCK : ON
UNLOCK : OFF
CDL UNLOCK SW LOCK : OFF
UNLOCK : ON
LIIA0391E
Revision: December 20092009 QX56

Page 2988 of 4171

INFINITI QX56 2009 Factory Service Manual
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 ignitio

Page 2989 of 4171

INFINITI QX56 2009 Factory Service Manual
POWER WINDOW SERIAL LINKPWC-41
< COMPONENT DIAGNOSIS >
C
DE
F
G H
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M A
B
PWC
N
O P
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “D ATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM”

Page 2990 of 4171

INFINITI QX56 2009 Factory Service Manual
PWC-42
< COMPONENT DIAGNOSIS >
POWER WINDOW SERIAL LINK
Is the inspection result normal?
YES >> Replace main power window and door lock/unlock switch. Refer to PWC-117, "Removal and
Installation".
NO

Page 2991 of 4171

INFINITI QX56 2009 Factory Service Manual
POWER WINDOW LOCK SWITCHPWC-43
< COMPONENT DIAGNOSIS >
C
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M A
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PWC
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POWER WINDOW LOCK SWITCH
DescriptionINFOID:0000000003776019
Ground circuit of main power window and door lock/u

Page 2992 of 4171

INFINITI QX56 2009 Factory Service Manual
PWC-44
< COMPONENT DIAGNOSIS >
REAR POWER VENT WINDOW SWITCH CIRCUIT CHECK
REAR POWER VENT WINDOW SWITCH CIRCUIT CHECK
DescriptionINFOID:0000000005864657
Rear power vent window motor LH and RH will b

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