2008 INFINITI QX56 Factory Service Manual

Page 3561 of 4083

INFINITI QX56 2008  Factory Service Manual TM-14
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
“D”, “4”, “3” Positions 2GR
• The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.
• The 3rd

Page 3562 of 4083

INFINITI QX56 2008  Factory Service Manual A/T CONTROL SYSTEMTM-15
< FUNCTION DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
“2”, “1” Positions 2GR
• The front brake fastens the front sun gear.
• The forward brake and the forward one-w

Page 3563 of 4083

INFINITI QX56 2008  Factory Service Manual TM-16
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
“D”, “4”, “3” Positions 3GR
• The front brake fastens the front sun gear.
• The direct clutch is coupled, and the rear carrier and rear

Page 3564 of 4083

INFINITI QX56 2008  Factory Service Manual A/T CONTROL SYSTEMTM-17
< FUNCTION DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
“D”, “4” Positions 4GR
• The direct clutch is coupled, and the rear carrier and rear sun gear are connected.
•

Page 3565 of 4083

INFINITI QX56 2008  Factory Service Manual TM-18
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
“D” Position 5GR
• The front brake fastens the front sun gear.
• The input clutch is coupled and the front internal gear and mid internal gear a

Page 3566 of 4083

INFINITI QX56 2008  Factory Service Manual A/T CONTROL SYSTEMTM-19
< FUNCTION DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
“R” Position
• The front brake fastens the front sun gear.
• The high and low reverse clutch is coupled, and the m

Page 3567 of 4083

INFINITI QX56 2008  Factory Service Manual TM-20
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
TCM Function
INFOID:0000000001603990
The function of the TCM is to:
• Receive input signals sent from  various switches and sensors.
• Determine req

Page 3568 of 4083

INFINITI QX56 2008  Factory Service Manual A/T CONTROL SYSTEMTM-21
< FUNCTION DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
CONTROL SYSTEM DIAGRAM 
CAN CommunicationINFOID:0000000001603991
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a ser