relay INFINITI QX56 2011 Factory Manual Online

DAS-298
< SYSTEM DESCRIPTION >[LDW & LDP]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
STOP LAMP
ICC BUZZER
BRAKE ACTUATOR
NOTE:
The test can be performed only when the engine is running.
NOTE:
The test is finished in 10 seconds after starting
Te s t i t e mOper-
ation Description  MAIN switch indicator
 ICC system warning lamp
 IBA OFF indicator lamp
METER LAMP Off
Stops sending the following signals to exit from the test
 Meter display signal
 ICC warning lamp signal
 IBA OFF indicator lamp signal OFF
On Transmits the following signals to the combination meter via
CAN communication
 Meter display signal
 ICC warning lamp signal
 IBA OFF indicator lamp signal
ON
Te s t i t e m
Oper-
ation Description Stop lamp
STOP LAMP Off
Stops transmitting the ICC brake hold relay drive signal be-
low to end the test OFF
On Transmits the ICC brake hold relay drive signal ON
Test item Operation Description ICC warning chime operation
sound
ICC BUZZER MODE1
Transmits the buzzer output signals to the combination
meter via CAN communication Intermittent beep sound
Test start Starts the tests of “MODE1” — Reset Stops transmitting the buzzer output signal below to end
the test —
End Returns to the “SELECT TEST ITEM” screen —
Test item Operation Description “PRESS SENS” value
BRAKE ACTUATOR MODE1
Transmits the brake fluid pressure control signal to the
ABS actuator and electric unit (control unit) via CAN
communication 10 bar
MODE2 20 bar
MODE3 30 bar
Test start Starts the tests of “MODE1”, “MODE2” and “MODE3” —
Reset Stops transmitting the brake fluid pressure control signal
below to end the test —
End Returns to the “SELECT TEST ITEM” screen —
PKIB1767J
Revision: 2010 May2011 QX56

DAS-304
< ECU DIAGNOSIS INFORMATION >[LDW & LDP]
ADAS CONTROL UNIT
VHCL SPEED SE While driving Displays the ve-
hicle speed cal-
culated by
ADAS control unit
SET VHCL SPD While driving When vehicle speed is set Displays the set
vehicle speed
BUZZER O/P Engine running When the buzzer of the following system operates
 Vehicle-to-vehicle distance control mode
 DCA system
 FCW system
 IBA system
On
When the buzzer of the following system not operates
 Vehicle-to-vehicle distance control mode
 DCA system
 FCW system
 IBA system Off
THRTL SENSOR NOTE:
The item is indicated, but not monitored
0.0
ENGINE RPM Engine running Equivalent to ta-
chometer read- ing
WIPER SW Ignition switch ON Wiper not operating Off
Wiper LO operation Low
Wiper HI operation High
YAW R AT E NOTE:
The item is indicated, but not monitored
0.0
BA WARNING Engine running IBA OFF indicator lamp ON
 When IBA system is malfunctioning
 When IBA system is turned to OFF
On
IBA OFF indicator lamp OFF
 When IBA system is normal
 When IBA system is turned to ON Off
STP LMP DRIVE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When ICC brake hold relay is activated On
When ICC brake hold relay is not activated Off
D RANGE SW Engine running When the selector lever is in “D” position or manual
mode
On
When the selector lever is in any position other than “D”
or manual mode Off
NP RANGE SW Engine running When the selector lever is
in “N”, “P” position On
When the selector lever is in any position other than “N”,
“P” Off
PKB SW Ignition switch ON When the parking brake is applied On
When the parking brake is released Off
PWR SUP MONI Engine running Power supply
voltage value of ADAS control unit
VHCL SPD AT While driving Va l u e o f A / T v e -
hicle speed sen- sor signal
THRTL OPENING Engine running Depress accelerator pedal Displays the
throttle position
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56

DAS-308
< ECU DIAGNOSIS INFORMATION >[LDW & LDP]
ADAS CONTROL UNIT
Fail-safe
INFOID:0000000006223719
If a malfunction occurs in each system, ADAS contro l unit cancels each control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
+ − Signal name Input/
Output
1
(V/W)
Ground Warning systems
switch
InputIgnition
switch ON When warning systems
switch is not pressed
12 V
When warning systems
switch is pressed 0 V
3
(R/Y) IBA OFF switch Input Ignition
switch
ON When IBA OFF switch is
not pressed
12 V
When IBA OFF switch is
pressed 0 V
4
(LG/B) Warning systems ON
indicator
OutputIgnition
switch ON Warning systems ON indi-
cator ON
0 V
Warning systems ON indi-
cator OFF 12 V
5
(R) ICC brake hold relay
drive signal
OutputIgnition
switch ON —12 V
At “STOP LAMP” test of
“Active test” 0 V
6
(B) Ground — Ignition
switch ON —0 V
7
(L) ITS communication-H — — — —
8
(Y) ITS communication-L — — — —
12
(G/R) Warning buzzer signal Output Ignition
switch ON Warning buzzer operation 0 V
Warning buzzer not oper-
ating
12 V
14
(L) CAN -H — — — —
15
(P) CAN -L — — — —
16
(W/G) Ignition power supply Input Ignition switch ON Battery Voltage
System Buzzer Warning lamp/Indicator lamp Description
Vehicle-to-vehicle distance control mode High-pitched
toneICC system warn
ing lamp Cancel
Conventional (fixed speed) cruise control mode High-pitched
tone
ICC system warn
ing lamp Cancel
Intelligent Brake Assist (IBA) High-pitched
toneIBA OFF indicator lamp Cancel
Forward Collision Warning (FCW) High-pitched
toneIBA OFF indicator lamp Cancel
Distance Control Assist (DCA) High-pitched
tone
ICC system warn
ing lamp Cancel
Lane Departure Warning (LDW) — Lane departure warning lamp Cancel
Revision: 2010 May2011 QX56

DAS-422
< SYSTEM DESCRIPTION >[BSW]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
Monitored item
[Unit]
ALL SIG(ICC)
MAIN SIG (ICC)
MAIN SIG
(LDW/LDP)
MAIN SIG
(BSW/BSI)
Description
MAIN SW
[On/Off] ×× × × Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
SET/COAST SW
[On/Off] ×× Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
CANCEL SW
[On/Off] ××
Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
RESUME/ACC SW
[On/Off] ×× Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
DISTANCE SW
[On/Off] × Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
CRUISE OPE
[On/Off] ××
Indicates whether controlling or not (ON means “controlling”)
BRAKE SW
[On/Off] ×× × × Indicates [On/Off] status as judged from ICC brake switch signal (ECM transmits
ICC brake switch signal through CAN communication)
STOP LAMP SW
[On/Off] ×× × × Indicates [On/Off] status as judged from stop lamp switch signal (ECM transmits
stop lamp switch signal through CAN communication)
IDLE SW
[On/Off] ×
Indicates [On/Off] status of idle switch read from ADAS control unit through CAN
communication (ECM transmits On/Off status through CAN communication)
SET DISTANCE
[Short/Mid/Long] ××
Indicates set distance memorized in ADAS control unit
CRUISE LAMP
[On/Off] ××
Indicates [On/Off] status of MAIN switch indicator output
OWN VHCL
[On/Off] ×
Indicates [On/Off] status of own vehicle indicator output
VHCL AHEAD
[On/Off] ×
Indicates [On/Off] status of vehicle ahead detection indicator output
ICC WARNING
[On/Off] ×
Indicates [On/Off] status of ICC system warning lamp output
VHCL SPEED SE
[km/h] or [mph] ×× × × Indicates vehicle speed calculated from ADAS control unit through CAN commu-
nication [ABS actuator and electric unit (c
ontrol unit) transmits vehicle speed sig-
nal (wheel speed) through CAN communication]
SET VHCL SPD
[km/h] or [mph] ××
Indicates set vehicle speed memorized in ADAS control unit
BUZZER O/P
[On/Off] ×
Indicates [On/Off] status of ICC warning chime output
THRTL SENSOR
[deg] ××
NOTE:
The item is displayed, but it is not monitored
ENGINE RPM
[rpm] × Indicates engine speed read from ADAS control unit through CAN communication
(ECM transmits engine speed signal through CAN communication)
WIPER SW
[OFF/LOW/HIGH] × Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request sig-
nal through CAN communication)
YAW R AT E
[deg/s] ×
NOTE:
The item is displayed, but it is not monitored
BA WARNING
[On/Off] ×
Indicates [On/Off] status of IBA OFF indicator lamp output
STP LMP DRIVE
[On/Off] ××
Indicates [On/Off] status of ICC brake hold relay drive output
D RANGE SW
[On/Off] × Indicates [On/Off] status of “D” or “M” positions read from ADAS control unit
through CAN communication; ON when position “D” or “M” (TCM transmits shift
position signal through CAN communication).
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-425
< SYSTEM DESCRIPTION > [BSW]
C
D
E
F
G H
I
J
K L
M B
N P A
ACTIVE TEST
CAUTION:
 Never perform “Active Test” while driving the vehicle.
 The “Active Test” cannot be performed when th e following systems warning lamp is illuminated.
- ICC system warning lamp
- Lane departure warning lamp
- BSW warning lamp
- IBA OFF indicator lamp (IBA system ON)
 Shift the selector lever to “P” po sition, and then perform the test.
METER LAMP
NOTE:
The test can be performed only when the engine is running.
BSW SYSTEM ON
[On/Off] ×
Indicates [On/Off] status of BSW system
4WD SW
[AUTO, 4H, 4L] ×××
Indicates [On/Off] status as judged from current 4WD mode signal (Transfer con-
trol unit transmits current 4WD mode signal through CAN communication)
Monitored item
[Unit]
ALL SIG
(ICC)
MAIN SIG (ICC)
MAIN SIG
(LDW/LDP)
MAIN SIG
(BSW/BSI)
Description
Test item Description
METER LAMP The ICC system warning lamp, MAIN switch indicator and IBA OFF indicator lamp can be illuminated
by ON/OFF operations as necessary
STOP LAMP The ICC brake hold relay can be operated by ON/OFF operations as necessary, and the stop lamp
can be illuminated
ICC BUZZER Sounds a buzzer used for following systems by arbitrarily operating ON/OFF
 Intelligent Cruise Control (ICC)
 Distance Control Assist (DCA)
 Forward Collision Warning (FCW)
 Intelligent Brake Assist (IBA)
BRAKE ACTUATOR Activates the brake by an arbitrary operation
Active Pedal The accelerator pedal actuator can be operated as necessary
DCA INDICATOR The DCA system switch indicator can be illuminated by ON/OFF operations as necessary
LDP BUZZER Sounds a buzzer used for following systems by arbitrarily operating ON/OFF
 Lane Departure Warning (LDW)
 Lane Departure Prevention (LDP)
 Blind Spot Warning (BSW)
WARNING SYSTEM IND The warning systems ON indicator (on warning systems switch) can be illuminated by ON/OFF op-
erations as necessary
LDP ON IND The LDP ON indicator lamp can be illuminated by ON/OFF operations as necessary
LANE DEPARTURE W/L The lane departure warning lamp can be illuminated by ON/OFF operations as necessary
BSW/BSI WARNING LAMP The BSW warning lamp can be illuminated by ON/OFF operations as necessary
Revision: 2010 May2011 QX56

DAS-426
< SYSTEM DESCRIPTION >[BSW]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
STOP LAMP
ICC BUZZER
BRAKE ACTUATOR
NOTE:
The test can be performed only when the engine is running.
NOTE:
The test is finished in 10 seconds after starting
Te s t i t e mOper-
ation Description  MAIN switch indicator
 ICC system warning lamp
 IBA OFF indicator lamp
METER LAMP Off
Stops sending the following signals to exit from the test
 Meter display signal
 ICC warning lamp signal
 IBA OFF indicator lamp signal OFF
On Transmits the following signals to the combination meter via
CAN communication
 Meter display signal
 ICC warning lamp signal
 IBA OFF indicator lamp signal
ON
Te s t i t e m
Oper-
ation Description Stop lamp
STOP LAMP Off
Stops transmitting the ICC brake hold relay drive signal be-
low to end the test OFF
On Transmits the ICC brake hold relay drive signal ON
Test item Operation Description ICC warning chime operation
sound
ICC BUZZER MODE1
Transmits the buzzer output signals to the combination
meter via CAN communication Intermittent beep sound
Test start Starts the tests of “MODE1” — Reset Stops transmitting the buzzer output signal below to end
the test —
End Returns to the “SELECT TEST ITEM” screen —
Test item Operation Description “PRESS SENS” value
BRAKE ACTUATOR MODE1
Transmits the brake fluid pressure control signal to the
ABS actuator and electric unit (control unit) via CAN
communication 10 bar
MODE2 20 bar
MODE3 30 bar
Test start Starts the tests of “MODE1”, “MODE2” and “MODE3” —
Reset Stops transmitting the brake fluid pressure control signal
below to end the test —
End Returns to the “SELECT TEST ITEM” screen —
PKIB1767J
Revision: 2010 May2011 QX56

DAS-434
< ECU DIAGNOSIS INFORMATION >[BSW]
ADAS CONTROL UNIT
VHCL SPEED SE While driving Displays the ve-
hicle speed cal-
culated by
ADAS control unit
SET VHCL SPD While driving When vehicle speed is set Displays the set
vehicle speed
BUZZER O/P Engine running When the buzzer of the following system operates
 Vehicle-to-vehicle distance control mode
 DCA system
 FCW system
 IBA system
On
When the buzzer of the following system not operates
 Vehicle-to-vehicle distance control mode
 DCA system
 FCW system
 IBA system Off
THRTL SENSOR NOTE:
The item is indicated, but not monitored
0.0
ENGINE RPM Engine running Equivalent to ta-
chometer read- ing
WIPER SW Ignition switch ON Wiper not operating Off
Wiper LO operation Low
Wiper HI operation High
YAW R AT E NOTE:
The item is indicated, but not monitored
0.0
BA WARNING Engine running IBA OFF indicator lamp ON
 When IBA system is malfunctioning
 When IBA system is turned to OFF
On
IBA OFF indicator lamp OFF
 When IBA system is normal
 When IBA system is turned to ON Off
STP LMP DRIVE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When ICC brake hold relay is activated On
When ICC brake hold relay is not activated Off
D RANGE SW Engine running When the selector lever is in “D” position or manual
mode
On
When the selector lever is in any position other than “D”
or manual mode Off
NP RANGE SW Engine running When the selector lever is
in “N”, “P” position On
When the selector lever is in any position other than “N”,
“P” Off
PKB SW Ignition switch ON When the parking brake is applied On
When the parking brake is released Off
PWR SUP MONI Engine running Power supply
voltage value of ADAS control unit
VHCL SPD AT While driving Va l u e o f A / T v e -
hicle speed sen- sor signal
THRTL OPENING Engine running Depress accelerator pedal Displays the
throttle position
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56

DAS-438
< ECU DIAGNOSIS INFORMATION >[BSW]
ADAS CONTROL UNIT
Fail-safe
INFOID:0000000006223862
If a malfunction occurs in each system, ADAS contro l unit cancels each control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
+ − Signal name Input/
Output
1
(V/W)
Ground Warning systems
switch
InputIgnition
switch ON When warning systems
switch is not pressed
12 V
When warning systems
switch is pressed 0 V
3
(R/Y) IBA OFF switch Input Ignition
switch
ON When IBA OFF switch is
not pressed
12 V
When IBA OFF switch is
pressed 0 V
4
(LG/B) Warning systems ON
indicator
OutputIgnition
switch ON Warning systems ON indi-
cator ON
0 V
Warning systems ON indi-
cator OFF 12 V
5
(R) ICC brake hold relay
drive signal
OutputIgnition
switch ON —12 V
At “STOP LAMP” test of
“Active test” 0 V
6
(B) Ground — Ignition
switch ON —0 V
7
(L) ITS communication-H — — — —
8
(Y) ITS communication-L — — — —
12
(G/R) Warning buzzer signal Output Ignition
switch ON Warning buzzer operation 0 V
Warning buzzer not oper-
ating
12 V
14
(L) CAN -H — — — —
15
(P) CAN -L — — — —
16
(W/G) Ignition power supply Input Ignition switch ON Battery Voltage
System Buzzer Warning lamp/Indicator lamp Description
Vehicle-to-vehicle distance control mode High-pitched
toneICC system warn
ing lamp Cancel
Conventional (fixed speed) cruise control mode High-pitched
tone
ICC system warn
ing lamp Cancel
Intelligent Brake Assist (IBA) High-pitched
toneIBA OFF indicator lamp Cancel
Forward Collision Warning (FCW) High-pitched
toneIBA OFF indicator lamp Cancel
Distance Control Assist (DCA) High-pitched
tone
ICC system warn
ing lamp Cancel
Lane Departure Warning (LDW) — Lane departure warning lamp Cancel
Revision: 2010 May2011 QX56

DEF-1
DRIVER CONTROLS
C
DE
F
G H
I
J
K
M
SECTION DEF
A
B
DEF
N
O P
CONTENTS
DEFOGGER
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
3
SYSTEM DESCRIPTION ..............................5
COMPONENT PARTS ................................... .....5
Component Parts Location .................................. ......5
Component Description .............................................5
SYSTEM ..............................................................6
System Diagram .................................................. ......6
System Description ...................................................6
DIAGNOSIS SYSTEM (BCM) .............................7
COMMON ITEM ..................................................... ......7
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .......................................................
7
REAR WINDOW DEFOGGER ............................... ......8
REAR WINDOW DEFOGGER : CONSULT-III
Function (BCM - REAR DEFOGGER) ......................
8
DIAGNOSIS SYSTEM (IPDM E/R) .....................10
Diagnosis Description ......................................... ....10
CONSULT-III Function (IPDM E/R) .........................12
ECU DIAGNOSIS INFORMATION ..............15
BCM, IPDM E/R .............................................. ....15
List of ECU Reference ........................................ ....15
WIRING DIAGRAM ......................................16
REAR WINDOW DEFOGGER SYSTEM ........ ....16
Wiring Diagram ................................................... ....16
BASIC INSPECTION ...................................24
DIAGNOSIS AND REPAIR WORK FLOW .......24
Work Flow ............................................................ ....24
DTC/CIRCUIT DIAGNOSIS .........................25
REAR WINDOW DEFOGGER SWITCH ...........25
Component Function Check ................................ ....25
Diagnosis Procedure ...............................................25
REAR WINDOW DEFOGGER RELAY .............26
Description ...............................................................26
Component Function Check ....................................26
Diagnosis Procedure ...............................................26
REAR WINDOW DEFOGGER ..........................27
Description ...............................................................27
Component Function Check ....................................27
Diagnosis Procedure ...............................................27
DOOR MIRROR DEFOGGER ...........................29
Description ...............................................................29
Component Function Check ....................................29
Diagnosis Procedure ...............................................29
DRIVER SIDE DOOR MIRROR DEFOGGER ...30
Description ...............................................................30
Component Function Check ....................................30
Diagnosis Procedure ...............................................30
PASSENGER SIDE DOOR MIRROR DEFOG-
GER ...................................................................
31
Description ...............................................................31
Component Function Check ....................................31
Diagnosis Procedure ...............................................31
WIPER DEICER RELAY ...................................32
Component Function Check ....................................32
Diagnosis Procedure ...............................................32
Component Inspection .............................................33
WIPER DEICER ................................................34
Revision: 2010 May2011 QX56

COMPONENT PARTSDEF-5
< SYSTEM DESCRIPTION >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006299423
Component DescriptionINFOID:0000000006299424
1. BCM Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion"
2. Door mirror defogger (driver side) 3. Rear window defogger connector
4. Rear window defogger connector 5. Multifunction switch (rear window defogger switch)
Refer to AV- 9 , "
Component Parts Lo-
cation"
6. IPDM E/R
Refer to PCS-4, "
Component Parts
Location"
7. AV control unit 8. Wiper deicer
JMLIA0978ZZ
BCM  Transmits rear window defogger switch operation to IPDM E/R via CAN commu-
nication
 Performs the timer control of rear window defogger
IPDM E/R Controls rear window defogger relay when rear window defogger switch signal is re-
ceived via CAN communication, and then operates rear window defogger
Multifunction switch  The rear window defogger switch is installed
 Turns the indicator lamp ON when detecting the operation of rear window defog-
ger
Rear window defogger switch  The rear window defogger is operated by turning the rear window defogger switch
ON.
 The indicator lamp in the rear window defogger switch illuminates when the rear window defogger is operating.
Rear window defogger relay Operates the rear window defogger with the control signal from IPDM E/R
Rear window defogger Heats the heating wire with the power supply from the rear window defogger relay
to prevent the rear window from fogging up.
Door mirror defogger Heats the heating wire with the power supply from the rear window defogger relay
to prevent the door mirror from fogging up.
Wiper deicer Heats the heating wire with the power supply from the wiper deicer relay to thaw the
frozen wiper blade and glass.
Wiper deicer relay Supplies power to the wiper deicer with rear window defogger relay control.
Revision: 2010 May2011 QX56