2004 INFINITI FX35 Service Manual

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Page 105 of 4449

INFINITI FX35 2004 Service Manual AT-28
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
“D5 ” and “M5” Positions
The front brake fastens the front sun gear.
The input clutch is coupled, and the front internal gear

Page 106 of 4449

INFINITI FX35 2004 Service Manual A/T CONTROL SYSTEM
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“R” Position
The front brake fastens the front sun gear.
The high and low reverse clutch is coupled, and

Page 107 of 4449

INFINITI FX35 2004 Service Manual AT-30
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
TCM FunctionACS002LF
The function of the TCM is to:
Receive input signals sent from various switches and sensors.
Determine required l

Page 108 of 4449

INFINITI FX35 2004 Service Manual A/T CONTROL SYSTEM
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CAN CommunicationACS004PB
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for

A/T CONTROL SYSTEM
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CAN CommunicationACS004PB
SYSTEM DESCRIPTION
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 speed 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 CAN 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. For details, refer to LAN-6,
"CAN Communication Unit"
Input/Output Signal of TCMACS002LH
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kind of error.
*5: CAN communicationsControl itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
function
(*3)Self-diag-
nostics
function
InputAccelerator pedal position signal
(*5)XXXXXXX
Vehicle speed sensor A/T
(revolution sensor)XXXX XX
Vehicle speed sensor MTR
(*1) (*5)XXXX X
Closed throttle position signal
(*5)(*2) X (*2) X X (*2) X (*4) X
Wide open throttle position signal
(*5)(*2) X (*2) X (*2) X (*4) X
Turbine revolution sensor 1 X X X X X
Turbine revolution sensor 2
(for 4th speed only)XX X XX
Engine speed signals
(*5)XX
PNP switch XXXXXX(*4) X
Stop lamp switch signal
(*5)XX(*4) X
A/T fluid temperature sensors 1, 2XXXXXXX
ASCD or
ICCOperation signal
(*5)XXXX
Overdrive cancel
signal
(*5)XXX
TCM power supply voltage signalXXXXX X
Out-
putDirect clutch solenoid (ATF pres-
sure switch 5)XX XX
Input clutch solenoid (ATF pressure
switch 3)XX XX
High and low reverse clutch sole-
noid (ATF pressure switch 6)XX XX
Front brake solenoid (ATF pressure
switch 1)XX XX
Low coast brake solenoid (ATF
pressure switch 2)XX XXX
Line pressure solenoid XXXXXXX
TCC solenoid X X X
Self-diagnostics table
(*5)X
Sta rter rela yXX

Page 109 of 4449

INFINITI FX35 2004 Service Manual AT-32
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Line Pressure ControlACS002LI
When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the
TCM

Page 110 of 4449

INFINITI FX35 2004 Service Manual A/T CONTROL SYSTEM
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During Shift Change
The necessary and adequate line pressure for shift change is set.
For this reason, line pr

Page 111 of 4449

INFINITI FX35 2004 Service Manual AT-34
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Shift Change System Diagram
*1: Full phase real-time feedback control monitors movement of gear ratio at gear change, and controls oil
p

Page 112 of 4449

INFINITI FX35 2004 Service Manual A/T CONTROL SYSTEM
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Lock-up Applied
In the lock-up applied state, the torque converter clutch control valve is set into the locke

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