2010 INFINITI QX56 Ignition switch

ENCODERPWC-31
< COMPONENT DIAGNOSIS >
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REAR RH : DescriptionINFOID:0000000005147206
Detects condition of the front power window motor LH operation and transmits to main power window and door
lock/unlock switch as pulse signal.
REAR RH : Component Function CheckINFOID:0000000005147207
1. CHECK ENCODER OPERATION
Does front door glass RH perform AUTO open/close operation normally when operating main power window
and door lock/unlock switch?
Is the inspection result normal?
YES >> Encoder operation is OK.
NO >> Refer to PWC-31, "
REAR RH : Diagnosis Procedure".
REAR RH : Diagnosis ProcedureINFOID:0000000005147208
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1. CHECK ENCODER SIGNAL
1. Turn ignition switch ON.
2. Check the signal between rear power window control unit RH connector D309 terminal 4 and ground with oscilloscope.
Is the inspection result normal?
YES >> GO TO 2
NO >> Replace rear power window control unit RH.
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit RH and rear power window motor RH.
3. Check continuity between rear power window control unit RH connector D309 terminal 4 and rear power window motor RH
connector D304 terminal 3.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK REAR POWER WINDOW MOTOR RH POWER SUPPLY
Connec- tor Te r m i n a l s
Condition Signal
(+) (-)
D309 4 Ground Opening
LIIA2368E
OCC3383D
4 - 3 : Continuity should exist.
LIIA1389E
Revision: April 20092010 QX56

PWC-32
< COMPONENT DIAGNOSIS >
ENCODER
1. Turn ignition switch OFF.
2. Disconnect rear power window motor RH.
3. Turn ignition switch ON.
4. Check voltage between rear power window motor RH connectorD304 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> GO TO 4
4. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window motor RH and rear power win- dow control unit RH.
3. Check continuity between rear power window motor RH connec- tor D304 (B) terminal 4 and rear power window control unit RH
connector D309 (A) terminal 5.
Is the inspection result normal?
YES >> Replace rear power window switch RH. Refer to PWC-
119, "Removal and Installation".
NO >> Repair or replace harness.
5. CHECK ENCODER GROUND
1. Disconnect rear power window motor RH.
2. Check continuity between rear power window motor RH connec- tor D304 terminal 6 and ground.
Is the inspection result normal?
YES >> GO TO 7
NO >> GO TO 6
6. CHECK ENCODER GROUND CIRCUIT
1. Disconnect rear power window control unit RH.
2. Check continuity between rear power window motor RH connec- tor D304 terminal 6 and rear power window control unit RH con-
nector D309 terminal 3.
Is the inspection result normal?
YES >> Replace rear power window control unit RH.
NO >> Repair or replace harness.
7. CHECK REAR POWER WINDOW MOTOR RH LIMIT SWITCH SIGNAL
4 - Ground
: Approx. 10V
LIIA0378E
4 - 5: Continuity should exist.
LIIA2358E
6 - Ground: Continuity should exist.
LIIA0380E
6 - 3: Continuity should exist.
LIIA1383E
Revision: April 20092010 QX56

ENCODERPWC-33
< COMPONENT DIAGNOSIS >
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1. Turn ignition switch ON.
2. Check voltage between rear power window control unit RH con- nector and ground.
Is the inspection result normal?
YES >> Limit switch circuit is OK.
NO >> GO TO 8
8. CHECK REAR POWER WINDOW SWITCH RH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between rear power window control unit RH har- ness connector D309 terminal 2 and ground.
Is the inspection result normal?
YES >> GO TO 9
NO >> Replace rear power window control unit RH.
9. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit RH.
3. Check continuity between rear power window control unit RH connector D309 terminal 2 and rear power window motor RH
connector D304 terminal 5.
Is the inspection result normal?
YES >> Replace rear power window motor RH. Refer to GW-18,
"Removal and Installation".
NO >> Repair or replace harness.
Connector Te r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
D209 3 Ground Rear power window RH is be-
tween fully-open and just be-
fore fully-closed position (ON)
0
Rear power window RH is be-
tween just before fully-closed
position and fully-closed posi-
tion (OFF) 5
LIIA2366E
2 - Ground
: Approx. 5V
LIIA2367E
2 - 5 : Continuity should exist.
LIIA1385E
Revision: April 20092010 QX56

DOOR SWITCHPWC-35
< COMPONENT DIAGNOSIS >
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1. Turn ignition switch OFF.
2. Disconnect BCM and front door switch.
3. Check continuity between BCM connector and front door switch connector.
4. Check continuity between front door switch connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector and ground.
Is the measurement value within the specification?
YES >> GO TO 4
NO >> Replace BCM. Refer to BCS-59, "
Removal and Installation".
4. CHECK FRONT DOOR SWITCH
Check front door switch.
Refer to PWC-35, "
Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
NO >> Replace front door switch.
Component InspectionINFOID:0000000005147212
1. CHECK FRONT DOOR SWITCH
Check front door switches.
Is the inspection result normal?
YES >> Front door switch is OK.
NO >> Replace front door switch.
BCM connector Terminal Front door switch
connector Terminal Continuity
M18 12RH: B108
2Yes
M19 47LH: B8
Front door switch connector Te r m i n a l
GroundContinuity
B8 (LH) 2N o
B108 (RH)
LIIA0947E
Te r m i n a l
Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 12
Ground Battery voltage
M19 47
LIIA0946E
Te r m i n a l
Door switch Continuity
Door switches
2 Ground part of
door switch Pressed
No
Released Yes
LIIA2377E
Revision: April 20092010 QX56

PWC-36
< COMPONENT DIAGNOSIS >
DOOR KEY CYLINDER SWITCH
DOOR KEY CYLINDER SWITCH
DescriptionINFOID:0000000005147213
Main power window and door lock/unlock switch detects condition of the door key cylinder and transmits to
BCM as the LOCK or UNLOCK signals.
Component Function CheckINFOID:0000000005147214
1. CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check (“KEY CYL LK-SW”, “KEY CYL UN-SW”) in “DAT A MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to DLK-56, "
CONSULT-III Function (INTELLIGENT KEY)".
Is the inspection result normal?
YES >> Key cylinder switch is OK.
NO >> Refer to PWC-36, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005147215
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1. CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/ unlock switch connector and ground.
Is the measurement value within the specification?
YES >> Replace main power window and door lock/unlock switch.
NO >> GO TO 2
2. CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
Monitor item Condition
KEY CYL LK-SW Lock
: ON
Neutral / Unlock : OFF
KEY CYL UN-SW Unlock
: ON
Neutral / Lock : OFF
Te r m i n a l s
Key positionVoltage (V)
(Approx.)
(+)
(–)
Main power window
and door lock/unlock switch connector Te r m i n a l
D7 4
Ground Lock
0
Neutral/Unlock 5
6 Unlock
0
Neutral/Lock 5
ALKIA0309ZZ
Revision: April 20092010 QX56

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 assembly LH (key cylinder switch).
3. Check continuity between main power window and door lock/ unlock switch connector and front door lock assembly LH (key
cylinder switch) connector.
4. Check continuity between main power window and door lock/unlock switch connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
Check continuity between front door lock assembly LH (key cylinder
switch) connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to PWC-37, "
Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
NO >> Replace front door lock assembly LH (door key cylinder switch).
Component InspectionINFOID:0000000005147216
COMPONENT INSPECTION
1. CHECK DOOR KEY CYLINDER SWITCH
Main power window
and door lock/unlock switch connector Te r m i n a lFront door lock as-
sembly LH (key cylin-
der switch) connector Terminal Continuity
D7 (A) 4
D14 (B) 1
Ye s
66
Main power window and door lock/unlock switch connector Te r m i n a l
Ground Continuity
D7 (A) 4
No
6
ALKIA1025ZZ
Front door lock assembly LH (key
cylinder switch) connector Te r m i n a l
GroundContinuity
D14 5 Yes
LIIA1572E
Revision: April 20092010 QX56

POWER WINDOW SERIAL LINKPWC-39
< COMPONENT DIAGNOSIS >
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POWER WINDOW SERIAL LINK
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : DescriptionINFOID:0000000005147217
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 pow er 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:0000000005147218
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-III 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:0000000005147219
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
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: April 20092010 QX56

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 PWC-117, "Removal and
Installation".
NO >> Repair or replace harness.
FRONT POWER WINDOW SWITCH
FRONT POWER WINDOW SWITCH : DescriptionINFOID: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 CheckINFOID:0000000005147221
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL
Te r m i n a l
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
GroundContinuity
M18 (A) 22 No
Revision: April 20092010 QX56