2004 INFINITI FX35 lan s

A/T CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45
A/T CONTROL SYSTEMPFP:31036
Cross-Sectional View (2WD Models)ACS002LD
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Rear extension 20. Output shaft
SCIA5262E

AT-18
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Cross-Sectional View (AWD Models)ACS0033B
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Adapter case 20. Output shaft
SCIA5263E

A/T CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45
Shift MechanismACS002LE
The automatic transmission uses compact triple planetary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
FUNCTION OF CLUTCH AND BRAKE
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
PCIA0002J
Name of the Part Abbreviation Function
Front brake (1) FR/B Fastens the front sun gear (11).
Input clutch (2) I/CConnects the input shaft (12), the front internal gear (14) and the mid internal
gear (13).
Direct clutch (3) D/C Connects the rear carrier (15) and the rear sun gear (16).
High and low reverse clutch (4) HLR/C Connects the mid sun gear (17) and the rear sun gear (16).
Reverse brake (5) R/B Fastens the rear carrier (15).
Forward brake (6) Fwd/B Fastens the mid sun gear (17).
Low coast brake (7) LC/B Fastens the mid sun gear (17).
1st one-way clutch (8) 1st/owcAllows the rear sun gear (16) to turn freely forward relative to the mid sun gear
(17) but fastens it for reverse rotation.
Forward one-way clutch (9) F/owcAllows the mid sun gear (17) to turn freely in the forward direction but fastens it
for reverse rotation.
3rd one-way clutch (10) 3rd/owcAllows the front sun gear (11) to turn freely in the forward direction but fastens
it for reverse rotation.

A/T CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45
“D4 ” and “M4” Positions

The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.

The input clutch is coupled, and the front internal gear and mid internal gear are connected.

The drive power is conveyed to the front internal gear, mid internal gear, and rear carrier and the three
planetary gears rotate forward as one unit.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
SCIA1517E

A/T CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45
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

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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Revision: 2004 November 2004 FX35/FX45
If the DTC is being detected currently, the time data will be “0”.
If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM has a memory function, which stores the driving condition such as fuel system status, calculated
load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II
or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
detail, refer to EC-109, "
CONSULT-II Function" (for VQ35DE) or EC-759, "CONSULT-II Function" (for
VK45DE).
Only one set of freeze frame data (either 1st trip freeze frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the ECM mem-
ory is erased.
HOW TO ERASE DTC
The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as
described following.

If the battery cable is disconnected, the diagnostic trouble code will be lost within 24 hours.

When you erase the DTC, using CONSULT-II or GST is easier and quicker than switching the mode
selector on the ECM.
The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to OBD-II. For details, refer to EC-54, "
Emission-Related Diagnostic Information" (for VQ35DE) or EC-
704, "Emission-related Diagnostic Information" (for VK45DE).

Diagnostic trouble codes (DTC)
SAT015K
SAT016K
Priority Items
1 Freeze frame data Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data

DTC U1000 CAN COMMUNICATION LINE
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Revision: 2004 November 2004 FX35/FX45
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureACS007AP
1. CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1. Turn ignition switch “ON” and start engine.
2. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
Is any malfunction of the
“CAN COMM CIRCUIT” indicated?
YES >> Print out CONSULT-II screen, GO TO LAN section.
Refer to LAN-4, "
Precautions When Using CONSULT-II"
.
NO >>INSPECTION END
TerminalWire
colorItem Condition Data (Approx.)
3 L CAN-H – –
8 R CAN-L – –
PCIA0061E

AT-258
ON-VEHICLE SERVICE
Revision: 2004 November 2004 FX35/FX45
9. Install bearing race to output shaft.
10. Apply recommended sealant (Genuine Anaerobic Liquid Gasket
or equivalent. Refer to GI-48, "
Recommended Chemical Prod-
ucts and Sealants" .) to rear extension assembly as shown in
illustration.
CAUTION:
Complete remove all moisture, oil and old sealant, etc. from
the transmission case and rear extension assembly mount-
ing surfaces.
11. Install rear extension assembly to transmission case. (With nee-
dle bearing.)
12. Tighten rear extension assembly mounting bolts to specified
torque.
CAUTION:
Do not reuse self-sealing bolt.
13. Install engine rear member. Refer to AT- 2 6 6 , "
Removal and Installation (2WD Models)" .
14. Install rear propeller shaft. Refer to PR-7, "
Removal and Installation" .
15. Install exhaust front tube and center muffler. Refer to EX-3, "
Removal and Installation" .
16. Install drain plug in oil pan.
CAUTION:
Do not reuse drain plug gasket.
17. Pour ATF into transmission assembly. Refer to AT- 1 2 , "
Changing A/T Fluid" .
SCIA5245E
SCIA5212E
SCIA3431E
Rear extension assembly mounting bolt
: 52 N·m (5.3 Kg-m, 38 ft-lb)
Self-sealing bolt
: 61 N·m (6.2 Kg-m, 45 ft-lb)
SCIA3426E
: 34 N·m (3.5 kg-m, 25 ft-lb)