INFINITI QX56 2008 Factory Service Manual

PWC-90
< ECU DIAGNOSIS >
FRONT POWER WINDOW SWITCH
AAKIA0236GB
Revision: March 20102008 QX56

FRONT POWER WINDOW SWITCHPWC-91
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
PWC
N
O P
AAKIA0237GB
Revision: March 2010 2008 QX56

PWC-92
< ECU DIAGNOSIS >
FRONT POWER WINDOW SWITCH
AAKIA0238GB
Revision: March 20102008 QX56

FRONT POWER WINDOW SWITCHPWC-93
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
PWC
N
O P
Fail SafeINFOID:0000000001735742
FAIL-SAFE CONTROL
Switches to fail-safe control when malfunction is detected in encoder signal that detects up/down speed and
direction of door glass. Switches to fail-safe cont rol when error beyond regulation value is detected between
the fully closed position and the actual position of the glass.
AAKIA0239GB
Revision: March 2010 2008 QX56

PWC-94
< ECU DIAGNOSIS >
FRONT POWER WINDOW SWITCH
It changes to condition before initialization and the following functions do not operate when switched to fail-
safe control.
• Auto-up operation
• Anti-pinch function
• Retained power function
Perform initial operation to recover when switched to fa il-safe mode. However, it switches back to fail-safe
control when malfunction is found in power window switch or in motor.
Error Error condition
Pulse sensor malfunction When only one side of pulse signal is being detected for more than the specified value.
Both pulse sensors mal-
function When both pulse signals have not been detected for more than the specified value during glass open/
close operation.
Pulse direction malfunction When the pulse signal that is detected during glass open/close operation detects the opposite condition
of power window motor operating direction.
Glass recognition position
malfunction 1 When it detects the error between glass fully closed position in power window switch memory and actual
fully closed position during glass open/close operation is more than the specified value.
Glass recognition position
malfunction 2 When it detects pulse count more than the value of glass full stroke during glass open/close operation.
Malfunction of not yet up-
dated closed position of
glass When glass open/close operation is continuously performed without fully closing more than the specified
value (approximately 10 strokes).
Revision: March 2010
2008 QX56

NONE OF THE POWER WINDOWS CAN BE OPERATED USING ANY SWITCH
PWC-95
< SYMPTOM DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
PWC
N
O P
SYMPTOM DIAGNOSIS
NONE OF THE POWER WINDOWS CAN BE OPERATED USING ANY
SWITCH
Diagnosis ProcedureINFOID:0000000001735743
1. CHECK BCM POWER SUPPLY AND GROUND CIRCUIT
Check BCM power supply and ground circuit.
Refer to BCS-32, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning parts.
2. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY AND
GROUND CIRCUIT
Check power window switch main power supply and ground circuit.
Refer to PWC-12, "
POWER WINDOW MAIN SWITCH : Component Function Check".
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace the malfunctioning parts.
3. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH SERIAL CIRCUIT
Check main power window and door lock/unlock switch serial circuit.
Refer to PWC-12, "
POWER WINDOW MAIN SWITCH : Component Function Check".
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace the malfunctioning parts.
4. CHECK MAIN POWER WINDOW A ND DOOR LOCK/UNLOCK SWITCH
Check main power window and door lock/unlock switch.
Refer to PWC-12, "
POWER WINDOW MAIN SWITCH : Component Function Check".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check intermittent incident. Refer to GI-38, "
Intermittent Incident".
Revision: March 2010 2008 QX56

PWC-96
< SYMPTOM DIAGNOSIS >
DRIVER SIDE POWER WINDOW ALONE DOES NOT OPERATE
DRIVER SIDE POWER WINDOW ALONE DOES NOT OPERATE
Diagnosis ProcedureINFOID:0000000001735744
1. CHECK FRONT POWER WINDOW MOTOR LH
Check front power window motor LH.
Refer to PWC-17, "
DRIVER SIDE : Component Function Check".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check intermittent incident. Refer to GI-38, "
Intermittent Incident".
Revision: March 2010 2008 QX56

FRONT PASSENGER SIDE POWER WINDOW ALONE DOES NOT OPERATE
PWC-97
< SYMPTOM DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
PWC
N
O P
FRONT PASSENGER SIDE POWER WINDOW ALONE DOES NOT OPER-
AT E
Diagnosis ProcedureINFOID:0000000001735745
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH
Check power window and door lock/unlock switch RH.
Refer to PWC-13, "
FRONT POWER WINDOW SWITCH : Component Function Check".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning parts.
2. CHECK POWER WINDOW AND DOOR LOCK/ UNLOCK SWITCH RH SERIAL LINK CIRCUIT
Check power window and door lock/unlock switch RH serial link circuit.
Refer to PWC-40, "
FRONT POWER WINDOW SWITCH : Component Function Check".
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace the malfunctioning parts.
3. CHECK FRONT POWER WINDOW MOTOR RH CIRCUIT
Check front power window motor RH circuit.
Refer to PWC-18, "
PASSENGER SIDE : Component Function Check".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check intermittent incident. Refer to GI-38, "
Intermittent Incident".
Revision: March 2010 2008 QX56

PWC-98
< SYMPTOM DIAGNOSIS >
REAR LH SIDE POWER WINDOW ALONE DOES NOT OPERATE
REAR LH SIDE POWER WINDOW ALONE DOES NOT OPERATE
Diagnosis ProcedureINFOID:0000000001735746
1. CHECK REAR POWER WINDOW SWITCH LH
Check rear power window switch LH.
Refer to PWC-15, "
REAR POWER WINDOW SWITCH : Component Function Check".
Is th e inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning parts.
2. CHECK REAR POWER WINDOW MOTOR LH
Check rear power window motor LH.
Refer to PWC-20, "
REAR LH : Component Function Check".
Is th e inspection result normal?
YES >> Inspection End.
NO >> Check intermittent incident. Refer to GI-38, "
Intermittent Incident".
Revision: March 2010 2008 QX56

REAR RH SIDE POWER WINDOW ALONE DOES NOT OPERATE
PWC-99
< SYMPTOM DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
PWC
N
O P
REAR RH SIDE POWER WINDOW ALONE DOES NOT OPERATE
Diagnosis ProcedureINFOID:0000000001735747
1. CHECK REAR POWER WINDOW SWITCH RH
Check rear power winodw switch RH.
Refer to PWC-15, "
REAR POWER WINDOW SWITCH : Component Function Check".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning parts.
2. CHECK REAR POWER WINDOW MOTOR RH
Check rear power window motor RH.
Refer to PWC-21, "
REAR RH : Component Function Check".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check intermittent incident. Refer to GI-38, "
Intermittent Incident".
Revision: March 2010 2008 QX56