ignition INFINITI QX56 2011 Factory Service Manual

POWER WINDOW SERIAL LINKPWC-57
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
PWC
N
O P
Is the inspection result normal?
YES >> Replace front power window sw itch (passenger side). Refer to PWC-74, "Removal and Installa-
tion".
NO >> GO TO 2.
2.CHECK POWER WINDOW SERIAL LINK SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front power window switch (passenger side) connector.
3. Turn ignition switch ON.
4. Check voltage between front power window switch (passenger side) harness connector and ground.
Is the inspection result normal?
YES >> Replace power window main switch. Refer to PWC-74, "Removal and Installation".
NO >> GO TO 3.
3.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect power window main switch connector.
2. Check continuity between power window main switch harness connector and front power window switch (passenger side) harness connector.
3. Check continuity between power window main switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
REAR POWER WINDOW SWITCH LH
(+) (–)Signal
(Reference value)
Front power window switch (passenger side)
Connector Terminal
D25 16 Ground
JPMIA0013GB
(+) (–)Voltage (V)
(Approx.)
Front power window switch (passenger side)
Connector Terminal D25 16Ground12
Power window main switch Front power window switch (passenger side) Continuity
Connector Terminal Connector Terminal
D5 14 D25 16 Existed
Power window main switch GroundContinuity
Connector Terminal
D5 14 Not existed
Revision: 2010 May2011 QX56

PWC-58
< DTC/CIRCUIT DIAGNOSIS >
POWER WINDOW SERIAL LINK
REAR POWER WINDOW SWITCH LH : Component Function Check
INFOID:0000000006217316
1.CHECK POWER WINDOW SWITCH OUTPUT SIGNAL
With CONSULT-III
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “D ATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to DLK-39, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Is the inspection result normal?
YES >> Power window serial link is OK.
NO >> Refer to PWC-58, "
REAR POWER WINDOW SWITCH LH : Diagnosis Procedure".
REAR POWER WINDOW SWIT CH LH : Diagnosis ProcedureINFOID:0000000006217317
1.CHECK POWER WINDOW SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check signal between rear power window switch LH harness connector and ground with oscilloscope.
Is the inspection result normal?
YES >> Replace rear power window switch LH. Refer to PWC-74, "Removal and Installation".
NO >> GO TO 2.
2.CHECK POWER WINDOW SERIAL LINK SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH connector.
3. Turn ignition switch ON.
4. Check voltage between rear power window switch LH harness connector and ground.
Is the inspection result normal?
YES >> Replace power window main switch. Refer to PWC-74, "Removal and Installation".
NO >> GO TO 3.
3.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect power window main switch connector.
Monitor item Condition
CDL LOCK SW LOCK : ON
UNLOCK : OFF
CDL UNLOCK SW LOCK : OFF
UNLOCK : ON
(+) (–)Signal
(Reference value)
Rear power window switch LH
Connector Terminal
D63 16 Ground
JPMIA0013GB
(+) (–)Voltage (V)
(Approx.)
Rear power window switch LH
Connector Terminal D63 16Ground12
Revision: 2010 May2011 QX56

POWER WINDOW SERIAL LINKPWC-59
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
PWC
N
O P
2. Check continuity between power window main s witch harness connector and rear power window switch
LH harness connector.
3. Check continuity between power window main switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
REAR POWER WINDOW SWITCH RH
REAR POWER WINDOW SWITCH RH : Component Function CheckINFOID:0000000006217318
1.CHECK POWER WINDOW SWITCH OUTPUT SIGNAL
With CONSULT-III
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “D ATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to DLK-39, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Is the inspection result normal?
YES >> Power window serial link is OK.
NO >> Refer to PWC-59, "
REAR POWER WINDOW SWITCH RH : Diagnosis Procedure".
REAR POWER WINDOW SWITCH RH : Diagnosis ProcedureINFOID:0000000006217319
1.CHECK POWER WINDOW SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check signal between rear power window swit ch RH harness connector and ground with oscilloscope.
Power window main switch Rear power window switch LH
Continuity
Connector Terminal Connector Terminal
D5 14 D63 16 Existed
Power window main switch GroundContinuity
Connector Terminal
D5 14 Not existed
Monitor item Condition
CDL LOCK SW LOCK : ON
UNLOCK : OFF
CDL UNLOCK SW LOCK : OFF
UNLOCK : ON
Revision: 2010 May2011 QX56

PWC-60
< DTC/CIRCUIT DIAGNOSIS >
POWER WINDOW SERIAL LINK
Is the inspection result normal?
YES >> Replace rear power window switch RH. Refer to PWC-74, "Removal and Installation".
NO >> GO TO 2.
2.CHECK POWER WINDOW SERIAL LINK SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power window switch RH connector.
3. Turn ignition switch ON.
4. Check voltage between rear power window switch RH harness connector and ground.
Is the inspection result normal?
YES >> Replace power window main switch. Refer to PWC-74, "Removal and Installation".
NO >> GO TO 3.
3.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect power window main switch connector.
2. Check continuity between power window main s witch harness connector and rear power window switch
RH harness connector.
3. Check continuity between power window main switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
(+) (–)Signal
(Reference value)
Rear power window switch RH
Connector Terminal
D43 16 Ground
JPMIA0013GB
(+) (–)Voltage (V)
(Approx.)
Rear power window switch RH
Connector Terminal D43 16Ground12
Power window main switch Re ar power window switch RH
Continuity
Connector Terminal Connector Terminal
D5 14 D43 16 Existed
Power window main switch GroundContinuity
Connector Terminal
D5 14 Not existed
Revision: 2010 May2011 QX56

PWO
PRECAUTIONSPWO-3
< PRECAUTION > [POWER SOCKET]
C
D
E
F
G H
I
J
K L
B A
O P
N
PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006222454
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Revision: 2010 May2011 QX56

PWO
PRECAUTIONSPWO-13
< PRECAUTION > [AC 120 V OUTLET]
C
D
E
F
G H
I
J
K L
B A
O P
N
PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006257062
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
 To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Revision: 2010 May2011 QX56

PWO
SYSTEMPWO-15
< SYSTEM DESCRIPTION > [AC 120 V OUTLET]
C
D
E
F
G H
I
J
K L
B A
O P
N
SYSTEM
System DescriptionINFOID:0000000006257071
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
 When turning ON the AC 120 V outlet main switch with the ignition switch ON, the indicator turns ON and the
inverter unit is activated.
 The inverter unit converts power supply voltage to AC 120 V and outputs the converted voltage to the AC
120 V outlet two seconds after the AC 120 V outlet main switch is turned ON.
Fail-safeINFOID:0000000006257269
When a malfunction listed below occurs, the inverter unit turns OFF the AC 120 V outlet main switch indicator
and stops the output by operating the fail-safe.
JSMIA0295GB
Malfunction item Fail-safe condition Fail-safe cancellation condition
Inverter unit is overheat-
ed When the inverter unit is overheated, the output
stops to protect the inverter unit. After the inverter unit temperature is lowered, the
AC 120 V outlet main switch ON
⇒ OFF ⇒ ON op-
eration allows normal return.
Inverter unit power sup-
ply voltage is 11.5 V or
less When inverter unit input voltage is lowered, the out-
put stops to protect the battery from running out.
Automatic normal return wh
en inverter unit power
supply voltage reaches 11.5 V - 16 V.
Inverter unit power sup-
ply voltage is 16 V - 18 V When inverter unit input voltage reaches 16 V - 18 V,
the output stops to protect the inverter unit. Automatic normal return wh
en inverter unit power
supply voltage reaches 11.5 V - 16 V.
Inverter unit power sup-
ply voltage is 18 V or
more When inverter unit input voltage reaches 18 V or
more, the output stops to protect the inverter unit. After the inverter unit power supply voltage reaches
11.5 V - 16 V, the AC 120 V outlet main switch ON
⇒
OFF ⇒ ON operation allows normal return.
Inverter unit output cur-
rent is 2.8 A or more When inverter unit output current reaches 2.8 A or
more, the output stops to prevent over current. (e.g.
connecting an electric appliance exceeding rated
output)
Automatic normal return wh
en inverter output cur-
rent reaches 2.8 A.
Inverter unit output signal
(AC 120 V output signal)
is shorted When inverter unit output signal is shorted, the out-
put stops. After recovering from inverter unit output signal
short, the AC 120 V outlet main switch ON
⇒ OFF
⇒ ON operation allows normal return.
Revision: 2010 May2011 QX56

PWO-16
< ECU DIAGNOSIS INFORMATION >[AC 120 V OUTLET]
INVERTER UNIT
ECU DIAGNOSIS INFORMATION
INVERTER UNIT
Reference ValueINFOID:0000000006257074
TERMINAL LAYOUT
PHYSICAL VALUES
JSMIA0395ZZ
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
+ − Signal name Input/
Output
1
(R) 5
(G) AC 120 V output Output Ignition
switch
ON When AC 120 V outlet
main switch OFF
0 V
When AC 120 V outlet
main switch ON
(When using circuit tester) AC 120 V
When AC 120 V outlet
main switch ON
(When using oscilloscope) Reference value
AC 120 V
4
(G/R) Ground Battery power supply Input Ignition switch OFF Battery power supply
5
(G) 1
(R) AC 120 V output Output Ignition
switch ON When AC 120 V outlet
main switch OFF
0 V
When AC 120 V outlet
main switch ON
(When using circuit tester) AC 120 V
When AC 120 V outlet
main switch ON
(When using oscilloscope) Reference value
AC 120 V
JSMIA0397GB
JSMIA0397GB
Revision: 2010 May2011 QX56

PWO
INVERTER UNITPWO-17
< ECU DIAGNOSIS INFORMATION > [AC 120 V OUTLET]
C
D
E
F
G H
I
J
K L
B A
O P
N
CAUTION:
 To measure AC 120 V output signal, always use th
e circuit tester or oscilloscope AC range.
Never allow the probes to contact each other.
 Because of modified sine wave output of the AC 120 V output signal, voltage cannot be measured
accurately without using a circuit tester that can measure true RMS (root mean square).
Fail-safeINFOID:0000000006257075
When a malfunction listed below occurs, the inverter unit turns OFF the AC 120 V outlet main switch indicator
and stops the output by operating the fail-safe.
6
(W)
Ground AC 120 V outlet main
switch
InputIgnition
switch ON When AC 120 V outlet
main switch OFF
0 V
When AC 120 V outlet
main switch ON 12 V
7
(O) AC 120 V outlet main
switch indicator
OutputIgnition
switch ON When AC 120 V outlet
main switch OFF
0 V
When AC 120 V outlet
main switch ON 5.2 V
8
(G/Y) Ground — Ignition switch ON 0 V
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
+ − Signal name Input/
Output
Malfunction item Fail-safe condition Fail-safe cancellation condition
Inverter unit is overheat-
ed When the inverter unit is overheated, the output
stops to protect the inverter unit. After the inverter unit temperature is lowered, the
AC 120 V outlet main switch ON
⇒ OFF ⇒ ON op-
eration allows normal return.
Inverter unit power sup-
ply voltage is 11.5 V or
less When inverter unit input voltage is lowered, the out-
put stops to protect the battery from running out.
Automatic normal return wh
en inverter unit power
supply voltage reaches 11.5 V - 16 V.
Inverter unit power sup-
ply voltage is 16 V - 18 V When inverter unit input voltage reaches 16 V - 18 V,
the output stops to protect the inverter unit. Automatic normal return wh
en inverter unit power
supply voltage reaches 11.5 V - 16 V.
Inverter unit power sup-
ply voltage is 18 V or
more When inverter unit input voltage reaches 18 V or
more, the output stops to protect the inverter unit. After the inverter unit power supply voltage reaches
11.5 V - 16 V, the AC 120 V outlet main switch ON
⇒
OFF ⇒ ON operation allows normal return.
Inverter unit output cur-
rent is 2.8 A or more When inverter unit output current reaches 2.8 A or
more, the output stops to prevent over current. (e.g.
connecting an electric appliance exceeding rated
output) Automatic normal return wh
en inverter output cur-
rent reaches 2.8 A.
Inverter unit output signal
(AC 120 V output signal)
is shorted When inverter unit output signal is shorted, the out-
put stops. After recovering from inverter unit output signal
short, the AC 120 V outlet main switch ON
⇒ OFF
⇒ ON operation allows normal return.
Revision: 2010 May2011 QX56

PWO
POWER SUPPLY AND GROUND CIRCUITPWO-23
< DTC/CIRCUIT DIAGNOSIS > [AC 120 V OUTLET]
C
D
E
F
G H
I
J
K L
B A
O P
N
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000006257089
1.CHECK FUSE
Check that the following fuse is not blown.
Is the fuse fusing?
YES >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO >> GO TO 2.
2.CHECK INVERTER UNIT POWER SUPPLY CIRCUIT
Check voltage between inverter unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the inverter unit power supply circuit.
3.CHECK INVERTER UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the inverter unit connector.
3. Check for continuity between inverter unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace the inverter unit ground circuit.
Signal name Fuse No.
Battery power supply 79
Te r m i n a l Condition
Vo l ta g e
(Approx.)
(+) (–)
Inverter unit GroundIgnition switch
Connector Terminal
M143 4 OFF Battery voltage
Inverter unit GroundContinuity
Connector Terminal
M143 8 Existed
Revision: 2010 May2011 QX56