2011 INFINITI QX56 wiring diagram

EC-48
< SYSTEM DESCRIPTION >[VK56VD]
SYSTEM
AUTOMATIC SPEED CONTROL DEVI CE (ASCD) : System Diagram
INFOID:0000000006217715
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System DescriptionINFOID:0000000006217716
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line
BASIC ASCD SYSTEM
 Automatic Speed Control Device (ASCD) allows a dr iver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can be set the vehicle speed in the set speed range.
 ECM controls throttle angle of electric th rottle control actuator to regulate engine speed.
 Operation status of ASCD is indicated in combination meter.
 If any malfunction occurs in the ASCD system, it automatically deactivates the ASCD control.
Refer to EC-49, "
AUTMATIC SPEED CONTROL DEVICE (A SCD) : Switch Name and Function" for ASCD
operating instructions.
CAUTION:
Always drive vehicle in a safe manner according to traffic conditions and obey all traffic laws.
CAN COMMUNICATION
CAN COMMUNICATION : System DescriptionINFOID:0000000006217718
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart", about CAN com-
munication for detail.
JPBIA3272GB
Sensor Input signal to ECM ECM function Actuator
ASCD steering switch ASCD steering switch operation
ASCD vehicle speed control Electric throttle control ac-
tuator
 Combination meter
ASCD brake switch
Brake pedal operation
Sto p l am p s w it ch
TCM Park/neutral position signal
Output shaft revolution signal*
Combination meter Vehicle speed signal*
Revision: 2010 May2011 QX56

EC-114
< WIRING DIAGRAM >[VK56VD]
ENGINE CONTROL SYSTEM
WIRING DIAGRAM
ENGINE CONTROL SYSTEM
Wiring DiagramINFOID:0000000006217736
JCBWM2089GB
Revision: 2010 May2011 QX56

ENGINE CONTROL SYSTEMEC-115
< WIRING DIAGRAM > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
JCBWM2090GB
Revision: 2010 May2011 QX56

EC-116
< WIRING DIAGRAM >[VK56VD]
ENGINE CONTROL SYSTEM
JCBWM2091GB
Revision: 2010 May2011 QX56

ENGINE CONTROL SYSTEMEC-117
< WIRING DIAGRAM > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
JCBWM2092GB
Revision: 2010 May2011 QX56

EC-118
< WIRING DIAGRAM >[VK56VD]
ENGINE CONTROL SYSTEM
JCBWM2093GB
Revision: 2010 May2011 QX56

ENGINE CONTROL SYSTEMEC-119
< WIRING DIAGRAM > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
JCBWM2094GB
Revision: 2010 May2011 QX56

EC-120
< WIRING DIAGRAM >[VK56VD]
ENGINE CONTROL SYSTEM
JCBWM2095GB
Revision: 2010 May2011 QX56