ignition INFINITI QX56 2011 Factory Service Manual

SYSTEMPWC-9
< SYSTEM DESCRIPTION >
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The signal mentioned below is transmitted from BCM to power window main \
switch, front power window
switch (passenger side) and rear power window switch LH/RH.
 Keyless power window down signal
 Door switch signal
The signal mentioned below is transmitted from power window main switch to front power window switch (pas-
senger side) and rear power window switch LH/RH.
 Front passenger side door window and rear door window operation signal
 Power window control by door key cylinder switch signal
 Power window lock switch signal
 Retained power operation signal
RETAINED POWER OPERATION
 Retained power operation is an additional power supply function that enables power window system to oper-
ate during the 45 seconds even when ignition switch is turned OFF.
Retained Power Function Cancel Conditions
 Front door CLOSE (door switch OFF) →OPEN (door switch ON).
 When ignition switch is ON again.
 When timer time passes. (45 seconds)
POWER WINDOW LOCK FUNCTION
Ground circuit inside power window main switch shuts off when power window lock switch is ON. This inhibits
power window switch operation except with the power window main switch.
ANTI-PINCH OPERATION
 Anti-pinch foreign lowers door glass 150 mm (5.9 in) when foreign material is pinched in door glass during
AUTO-UP operation.
 Encoder continues detecting the movement of power window motor and output the encoder pulse signal to
power window switch l while power window motor is operating.
 Resistance is applied to the power window motor ro tation that changes the frequency of encoder pulse sig-
nal if foreign material is trapped in the door glass.
 Power window switch controls to lower the door glass for 150 mm (5.9 in) after it detects encoder pulse sig-
nal frequency change.
Operation Condition
When all door glass AUTO-UP operation is performed ( anti-pinch function does not operate just before the
door glass closes and is fully closed)
NOTE:
Depending on environment and driving conditions, if a similar impact or load is applied to the door glass, it
may lower.
DOOR KEY CYLINDER SWITCH OPERATION
Hold the door key cylinder to the LOCK or UNLOCK direct ion for 1.5 seconds or more to OPEN or CLOSE all
power windows when ignition switch is OFF. In addition, it stops when key position is moved to NEUTRAL
when operating.
Operation Condition
 Ignition switch OFF.
 Hold door key cylinder to LOCK position for 1.5 se conds or more to perform CLOSE operation of the door
glass.
 Hold door key cylinder to UNLOCK position for 1.5 se conds or more to perform OPEN operation of the door
glass.
KEYLESS POWER WINDOW DOWN FUNCTION
All power windows open when the unlock button on Intelligent Key is activated and kept pressed for more than
3 seconds with the ignition switch OFF. The wi ndows keep opening if the unlock button is continuously
pressed.
The power window opening stops when the following operations are performed.
 When the unlock button is kept pressed more than 15 seconds.
 When the ignition switch is turned ON while the power window opening is operated.
 When the unlock button is released.
While retained power operation activate, keyless power window down function cannot be operated.
Revision: 2010 May2011 QX56

PWC-12
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
RETAIND PWR
RETAIND PWR : CONSULT-III Function (BCM - RETAINED PWR)INFOID:0000000006217270
Data monitor
CONSULT screen item Indication/Unit Description
Vehicle Speed km/h Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter km Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)
SLEEP>OFF While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC While turning power supply position from “LOCK” to “ACC”
ACC>ON While turning power supply position from “ACC” to “IGN”
RUN>ACC While turning power supp
ly position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN While turning power su
pply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT While turning power supply positi
on from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF While turning power supply position from “ACC” to “OFF”
OFF>LOCK While turning power supply position from “OFF” to “LOCK”
OFF>ACC While turning power supply position from “OFF” to “ACC”
ON>CRANK While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode
LOCK Power supply position is “LOCK”
(Ignition switch OFF with steer-
ing is locked.)
OFF Power supply position is “OFF” (Ignition switch OFF with steering
is unlocked.)
ACC Power supply position is “ACC” (Ignition switch ACC)
ON Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN Power supply position is “RUN” (Ignition switch ON with engine
running)
CRANKING Power supply position is “CRANKING” (At engine cranking)
IGN Counter 0 - 39 The number of times that ignition switch is turned ON after DTC is detected
 The number is 0 when a malfunction is detected now.
 The number increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition
whenever ignition switch OFF → ON.
 The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
Monitor Item Description
DOOR SW-DR Indicates [ON/OFF] condition of driver side door switch.
DOOR SW-AS Indicates [ON/OFF] condition of passenger side door switch.
Revision: 2010 May2011 QX56

POWER WINDOW MAIN SWITCHPWC-15
< ECU DIAGNOSIS INFORMATION >
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Fail-safeINFOID:0000000006217273
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 control w hen a signal that is out of the specified value is detected
between the fully closed position and the actual position of the glass.
If fail-safe control, the system changes to a non-in itialized condition and the following function do not operate.
 Auto-up operation
 Anti-pinch function
 Retained power function
When fail-safe control is activated, perform initialization procedure to recover. If a malfunction is detected in
power window switch or more, fail-safe control is activated again.
13
(G/Y) Ground Encoder pulse signal 1 Input When power window mo-
tor operates.
14
(V) Ground Power window serial link Input/
Output IGN SW ON or power win-
dow timer operating.
15
(G/R) Ground Encoder power supply Output When ignition switch ON
or power window timer op-
erates.12
17
(B) Ground Ground — — 0
19
(W) Ground Battery power supply Input — 12
Te r m i n a l N o .
(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
JMKIA0070GB
JPMIA0013GB
Malfunction Malfunction condition
Pulse sensor malfunction When one pulse signal that is the specified value or more is detected continuously for the specified
time or more, while door glass is being operated UP or DOWN.
Both pulse sensors mal-
function When both pulse signals are not detected continuously for the specified time or more, while door
glass is being operated UP or DOWN.
Pulse direction malfunc-
tion When a pulse signal indicating that window is moving in the opposite direction against the power win-
dow motor is detected for the specified value or more, while door glass is being operated UP or
DOWN.
Glass recognition position
malfunction 1 When the actual door glass position that is out of specified value is detected compared to the door
glass fully closed position memorized in module, while door glass is being operated UP or DOWN.
Glass recognition position
malfunction 2 When pulse count that is out of the door glass full stroke value or more is detected, while door glass
is being operated UP or DOWN.
Revision: 2010 May2011 QX56

PWC-16
< ECU DIAGNOSIS INFORMATION >
FRONT POWER WINDOW SWITCH (PASSENGER SIDE)
FRONT POWER WINDOW SWITCH (PASSENGER SIDE)
Reference Value INFOID:0000000006217274
TERMINAL LAYOUT
PHYSICAL VALUES
FRONT POWER WINDOW SWITCH
JMKIA3330ZZ
Te r m i n a l N o .(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
3
(W/B) Ground Encoder ground — — 0
4
(G/R) Ground Encoder power supply Output When ignition switch ON or
power window timer operates 12
8
(L) Ground Power window motor
UP signal
OutputWhen power window motor is
operated UP
12
9
(G) Ground
Power window motor
DOWN signal Output
When power window motor is
operated DOWN 12
10
(W) Ground Battery power supply Input — 12
11
(B) Ground Ground — — 0
12
(G/Y) Ground Encoder pulse signal 1 Input
When power window motor
operates
JMKIA0070GB
Revision: 2010 May2011 QX56

FRONT POWER WINDOW SWITCH (PASSENGER SIDE)PWC-17
< ECU DIAGNOSIS INFORMATION >
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Fail-safeINFOID:0000000006217275
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 control w hen a signal that is out of the specified value is detected
between the fully closed position and the actual position of the glass.
If fail-safe control, the system changes to a non-in itialized condition and the following function do not operate.
 Auto-up operation
 Anti-pinch function
 Retained power function
When fail-safe control is activated, perform initialization procedure to recover. If a malfunction is detected in
power window switch or more, fail-safe control is activated again.
15
(G/W) Ground Encoder pulse signal 2 Input When power window motor
operates
16
(V) Ground Power window serial link Input/
Output When ignition switch ON or
power window timer operates
Te r m i n a l N o .
(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
JMKIA0070GB
JPMIA0013GB
Malfunction Malfunction condition
Pulse sensor malfunction When one pulse signal that is the specified value or more is detected continuously for the specified
time or more, while door glass is being operated UP or DOWN.
Both pulse sensors mal-
function When both pulse signals are not detected continuously for the specified time or more, while door
glass is being operated UP or DOWN.
Pulse direction malfunc-
tion When a pulse signal indicating that window is moving in the opposite direction against the power win-
dow motor is detected for the specified value or more, while door glass is being operated UP or
DOWN.
Glass recognition position
malfunction 1 When the actual door glass position that is out of specified value is detected compared to the door
glass fully closed position memorized in module, while door glass is being operated UP or DOWN.
Glass recognition position
malfunction 2 When pulse count that is out of the door glass full stroke value or more is detected, while door glass
is being operated UP or DOWN.
Revision: 2010 May2011 QX56

PWC-18
< ECU DIAGNOSIS INFORMATION >
REAR POWER WINDOW SWITCH LH
REAR POWER WINDOW SWITCH LH
Reference Value INFOID:0000000006217276
TERMINAL LAYOUT
PHYSICAL VALUES
REAR POWER WINDOW SWITCH
JMKIA3330ZZ
Te r m i n a l N o .(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
3
(SB) Ground Encoder ground — — 0
4
(LG) Ground Encoder power supply Output When ignition switch ON or pow-
er window timer operates
12
8
(Y) Ground
Power window motor
UP signal Output
When power window motor is
operated UP 12
9
(G) Ground Power window motor
DOWN signal OutputWhen power window motor is
operated DOWN 12
10
(W) Ground Battery power supply Input — 12
11
(B) Ground Ground — — 0
12
(BR) Ground Encoder pulse signal 1 Input When power window motor oper-
ates
JMKIA0070GB
Revision: 2010 May2011 QX56

REAR POWER WINDOW SWITCH LHPWC-19
< ECU DIAGNOSIS INFORMATION >
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Fail-safeINFOID:0000000006217277
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 control w hen a signal that is out of the specified value is detected
between the fully closed position and the actual position of the glass.
If fail-safe control, the system changes to a non-in itialized condition and the following function do not operate.
 Auto-up operation
 Anti-pinch function
 Retained power function
When fail-safe control is activated, perform initialization procedure to recover. If a malfunction is detected in
power window switch or more, fail-safe control is activated again.
15
(L) Ground Encoder pulse signal 2 Input When power window motor oper-
ates.
16
(V) Ground Power window serial link Input/
Output When ignition switch ON or pow-
er window timer operates
Te r m i n a l N o .
(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
JMKIA0070GB
JPMIA0013GB
Malfunction Malfunction condition
Pulse sensor malfunction When one pulse signal that is the specified value or more is detected continuously for the specified
time or more, while door glass is being operated UP or DOWN.
Both pulse sensors mal-
function When both pulse signals are not detected continuously for the specified time or more, while door
glass is being operated UP or DOWN.
Pulse direction malfunc-
tion When a pulse signal indicating that window is moving in the opposite direction against the power win-
dow motor is detected for the specified value or more, while door glass is being operated UP or
DOWN.
Glass recognition position
malfunction 1 When the actual door glass position that is out of specified value is detected compared to the door
glass fully closed position memorized in module, while door glass is being operated UP or DOWN.
Glass recognition position
malfunction 2 When pulse count that is out of the door glass full stroke value or more is detected, while door glass
is being operated UP or DOWN.
Revision: 2010 May2011 QX56

PWC-20
< ECU DIAGNOSIS INFORMATION >
REAR POWER WINDOW SWITCH RH
REAR POWER WINDOW SWITCH RH
Reference Value INFOID:0000000006217278
TERMINAL LAYOUT
PHYSICAL VALUES
REAR POWER WINDOW SWITCH
JMKIA3330ZZ
Te r m i n a l N o .(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
3
(P) Ground Encoder ground — — 0
4
(Y) Ground Encoder power supply Output When ignition switch ON or pow-
er window timer operates
12
8
(W/R) Ground
Power window motor
UP signal Output
When power window motor is
operated UP 12
9
(R) Ground Power window motor
DOWN signal OutputWhen power window motor is
operated DOWN 12
10
(W) Ground Battery power supply Input — 12
11
(B) Ground Ground — — 0
12
(O) Ground Encoder pulse signal 1 Input When power window motor oper-
ates
JMKIA0070GB
Revision: 2010 May2011 QX56

REAR POWER WINDOW SWITCH RHPWC-21
< ECU DIAGNOSIS INFORMATION >
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Fail-safeINFOID:0000000006217279
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 control w hen a signal that is out of the specified value is detected
between the fully closed position and the actual position of the glass.
If fail-safe control, the system changes to a non-in itialized condition and the following function do not operate.
 Auto-up operation
 Anti-pinch function
 Retained power function
When fail-safe control is activated, perform initialization procedure to recover. If a malfunction is detected in
power window switch or more, fail-safe control is activated again.
15
(G) Ground Encoder pulse signal 2 Input When power window motor oper-
ates.
16
(V) Ground Power window serial link Input/
Output When ignition switch ON or pow-
er window timer operates
Te r m i n a l N o .
(wire color) Description
ConditionVoltage [V]
(Approx.)
+ - Signal name Input/
Output
JMKIA0070GB
JPMIA0013GB
Malfunction Malfunction condition
Pulse sensor malfunction When one pulse signal that is the specified value or more is detected continuously for the specified
time or more, while door glass is being operated UP or DOWN.
Both pulse sensors mal-
function When both pulse signals are not detected continuously for the specified time or more, while door
glass is being operated UP or DOWN.
Pulse direction malfunc-
tion When a pulse signal indicating that window is moving in the opposite direction against the power win-
dow motor is detected for the specified value or more, while door glass is being operated UP or
DOWN.
Glass recognition position
malfunction 1 When the actual door glass position that is out of specified value is detected compared to the door
glass fully closed position memorized in module, while door glass is being operated UP or DOWN.
Glass recognition position
malfunction 2 When pulse count that is out of the door glass full stroke value or more is detected, while door glass
is being operated UP or DOWN.
Revision: 2010 May2011 QX56

SYSTEM INITIALIZATIONPWC-33
< BASIC INSPECTION >
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SYSTEM INITIALIZATION
DescriptionINFOID:0000000006274850
If any of the following operations are performed, the in itialization is necessary for normal operation of power
window system.
 When control unit replaced.
 Electric power supply to power window switch or motor is interrupted by blown fuse or disconnection and
connection of the negative terminal of battery, etc.
 Removal and installation of regulator assembly.
 Power supply to the power window main switch or power window motor is cut off by the removal
of battery terminal or if the battery fuse is blown.
 Disconnection and connection of power window main switch harness connector.
 Removal and installation of motor from regulator assembly.
 Operation of regulator assembly as an independent unit.
 Removal and installation of door glass.
 Removal and installation of door glass run.
The following specified operations can not be performed under the non-initialized condition.
 Auto-up operation
 Anti-pinch function
Work ProcedureINFOID:0000000006274851
1.STEP 1
1. Turn ignition switch ON.
2. Operate power window switch to fully open the wi ndow. (This operation is unnecessary if the window is
already fully open)
3. Continue pulling the power window switch UP (AUTO-UP operation). Even after glass stops at fully closed
position, keep pulling the switch for 2 seconds or more.
4. Check that AUTO-UP function operates normally.
>> GO TO 2.
2.STEP 2
Check anti-pinch function. Refer to PWC-34, "
Work Procedure".
>> END
Revision: 2010 May2011 QX56