2006 SUZUKI SX4 engine

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-1
Transmission / Transaxle
Automatic Transmission/Transaxle
Precautions
Precautions in Diagnosing TroubleS6RW0D5100001
• Do not disconnect couplers from TCM, battery cable
from battery, TCM ground wire harness from engine or
main fuse before checking the diagnostic information
(DTC, freeze frame data, etc.) stored in TCM memory.
Such disconnection will clear memorized information
in TCM memory.
• Diagnostic information stored in TCM memory can be
cleared as well as checked by using SUZUKI scan
tool or CAN communication OBD generic scan tool.
Before using scan tool, read its Operator’s
(Instruction) Manual carefully to have good
understanding as to what functions are available and
how to use it.
It is indistinguishable which module turns on MIL
because not only ECM but also TCM turns on MIL.
Therefore, check both ECM and TCM for DTC when
MIL lights on.
When checking TCM for DTC, keep in mind that DTC
is displayed on the scan tool as follows depending on
the scan tool used.
– SUZUKI scan tool displays DTC detected by TCM.
– CAN communication OBD generic scan tool
displays DTC detected by each of ECM and TCM
simultaneously.
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• TCM replacement
– When substituting a known-good TCM, check that
all relays and actuators have resistance of
specified value.
Neglecting this check may result in damage to good
TCM.
• Communication of ECM, BCM, combination meter,
keyless start control module (if equipped), ABS
control module, 4WD control module (if equipped),
TCM and DLC, is established by CAN (Controller
Area Network). (For more detail of CAN
communication for ECM, refer to “CAN
Communication System Description”). Therefore,
handle CAN communication line with care referring to
“Precaution for CAN Communication System in
Section 00”.
Precautions for Disassembly and ReassemblyS6RW0D5100002
When repairing automatic transaxle, it is necessary to
conduct the on-vehicle test to investigate where the
cause of the trouble lies first.
Then whether overhaul should be done or not is
determined. If the transaxle is disassembled without
such preliminary procedure, not only the cause of the
trouble would be unknown, but also a secondary trouble
may occur and often time would be wasted.
As the automatic transaxle consists of high precision
component, the following cautions should be strictly
observed when handling its parts in disassembly and
reassembly.
• Disassembling valve body assembly is prohibited
essentially. However, a few parts can be
disassembled. When disassembling valve body
component parts, confirm whether their parts are
allowed to disassemble or not referring to “Valve Body
Assembly Disassembly and Reassembly”.
• When component part of forward clutch, direct clutch,
2nd brake and/or O/D and 2nd coast brake, namely
clutch disc, brake disc, retaining plate and/or
separator plate, have been replaced, all learned
contents, which have been stored in TCM memory by
executing learning control, should be initialized
referring to “Learning Control Initialization”.
• Make sure to wash dirt off from the transaxle so that
no such dirt will enter the transaxle during
dismounting and remounting.
• Select a clean place free from dust and dirt for
overhauling.
• Place a rubber mat on the work bench to protect parts
from damage.
• Work gloves or shop cloth should not be used. (Use a
nylon cloth or a paper towel.)
• When separating the case joint, do not pry with a
screwdriver or such but tap with a plastic hammer
lightly.
• Make sure to wash dirt off from the transaxle so that
no such dirt will enter the transaxle during
disassembly and reassembly.
• Wash the disassembled parts in ATF (Automatic
Transaxle Fluid) or kerosene (using care not to allow
ATF or kerosene to get on your face, etc.) and confirm
that each fluid passage is not clogged by blowing air
into it. But use kerosene to wash the discs, resin
washers and rubber parts.
• Replace each gasket, oil seal and O-ring with a new
one.
• Apply ATF to sliding or rotating parts before
reassembly.

Downloaded from www.Manualslib.com manuals search engine 5A-2 Automatic Transmission/Transaxle:
CAUTION!
• Keep component parts in group for each
subassembly and avoid mixing them up.
• Clean all parts with cleaning solvent
thoroughly and air dry them.
• Use kerosene or automatic transaxle fluid
as cleaning solvent.
• Do not use wiping cloths or rags to clean
or dry parts.
• All oil passages should be blown out and
checked to make sure that they are not
obstructed.
• Keep face and eyes away from solvent
spray while air blowing parts.
• Check mating surface for irregularities and
remove them, if any, and clean it again.
• Soak new clutch discs and brake discs in
transaxle fluid for at least 2 hours before
assembly.
• Replace all gaskets and O-ring with new
ones.
• Apply automatic transaxle fluid to all O-
rings.
• When installing seal ring, be careful so that
it is not expanded excessively, extruded or
caught.
• Replace oil seals that are removed and
apply grease to their lips.
• Before installing, be sure to apply
automatic transaxle fluid to sliding, rolling
and thrusting surface of all component
part. Also after installation, make sure to
check each part for proper operation.
• Always use torque wrench when
tightening bolts.

• A new discs should be soaked in ATF at least 2 hours
before use.Part Inspection and Correction Table
Part Inspect for Correction
Casted part,
machined partSmall flaw, burr Remove with oil
stone.
Deep or grooved
flawReplace part.
Clogged fluid
passageClean with air or
wire.
Flaw on installing
surface, residual
gasketRemove with oil
stone or replace
part.
Crack Replace part.
Bearing Unsmooth rotation Replace.
Streak, pitting, flaw,
crackReplace.
Bushing, thrust
washerFlaw, burr, wear,
burningReplace.
Oil seal, gasket Flawed or
hardened seal ringReplace.
Worn seal ring on
its periphery or sideReplace.
Piston seal ring, oil
seal, gasket, etc.Replace.
Gear Flaw, burr Replace.
Worn gear tooth Replace.
Splined part Burr, flaw, torsion Correct with oil
stone or replace.
Snap ring Wear, flaw,
distortionReplace.
No interference Replace.
Thread Burr Replace.
Damage Replace.
Spring Settling, sign of
burningReplace.
Friction plate Wear, burning,
distortion,
damaged clawReplace.
Separator
plate, retaining
plateWear, burning,
distortion,
damaged clawReplace.
Sealing
surface (where
lip contacts)Flaw, rough
surface, stepped
wear, foreign
materialReplace.

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-3
General Description
A/T DescriptionS6RW0D5101001
This automatic transaxle is electronic control full automatic transaxle with forward 3-speed plus overdrive (O/D) and
reverse 1-speed.
The torque converter is a 3-element, 1-step and 2-phase type and is equipped with an automatically controlled lock-up
mechanism.
The gear change device consists of a ravigneau type planetary gear unit, 3 multiple disc type clutches, 3 multiple disc
type brakes and 2 one-way clutches.
The hydraulic pressure control device consists of a valve body assembly, pressure control solenoid valve (linear
solenoid), 2 shift solenoid valves, TCC solenoid valve (TCC pressure control solenoid valve) (linear solenoid) and a
timing solenoid valve. Optimum line pressure complying with engine torque is produced by the pressure control
solenoid valve in dependence upon control signal from transmission control module (TCM). This makes it possible to
control the line pressure with high accuracy in accordance with the engine power and running conditions to achieve
smooth shifting characteristics and high efficiency.
A clutch-to-clutch control system is provided for shifting between 3rd gear and 4th gear. This clutch-to-clutch control
system is made to function optimally, so that hydraulic pressure controls such as shown below are conducted.
• When upshifting from 3rd gear to 4th gear, to adjust the drain hydraulic pressure at releasing the forward clutch, a
timing solenoid valve is used to switch a hydraulic passage with an orifice to another during shifting.
• When downshifting from 4th gear to 3rd gear, to adjust the line pressure applied to the forward clutch at engaging
the forward clutch, a timing solenoid valve is used to switch a hydraulic passage with an orifice to another during
shifting.
• When upshifting from 3rd gear to 4th gear with engine throttle opened, to optimize the line pressure applied to the
forward clutch at releasing the forward clutch, the learning control is processed to compensate the switching timing
of the timing solenoid at every shifting.
• When downshifting from 4th gear to 3rd gear with engine throttle opened, to optimize the line pressure applied to
the forward clutch at engaging the forward clutch, the learning control is processed to compensate the line pressure
at every shifting.
Employing the ravigneau type planetary gear unit and this clutch-to-clutch control system greatly simplifies the
construction to make possible a lightweight and compact transaxle.
A line pressure learning control is conducted to provide optimum shifting time at every upshifting with engine throttle
opened. If long upshifting time is detected, the subsequent line pressure applied during upshifting is intensified. On the
contrary, if short upshifting time is detected, the subsequent line pressure applied during upshifting is weakened.

Downloaded from www.Manualslib.com manuals search engine 5A-4 Automatic Transmission/Transaxle:
I5RW0C510070-01
1. Drive plate 11. 1st and reverse brake 21. Rear sun gear
2. Torque converter clutch (TCC) 12. Ring gear 22. Front sun gear
3. Torque converter 13. Long planet pinion 23. Short planet pinion
4. Input shaft 14. One-way No.2 clutch 24. Countershaft
5. Oil pump 15. 2nd brake 25. Reduction driven gear
6. Direct clutch drum (double as sensor rotor for input shaft
speed sensor)16. One-way No.1 clutch 26. Differential case assembly
7. Direct clutch 17. O/D and 2nd coast brake 27. Final gear
8. Parking lock gear 18. Intermediate shaft 28. Output shaft speed sensor (VSS) drive gear
9. Reduction drive gear 19. Forward clutch
10. Planet carrier 20. Reverse clutch

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-5
Specifications
Item Specifications
Torque converterTy p e
Stall torque ratio3-element, 1-step, 2-phase type (with TCC (lock-up)
mechanism)
1.9 – 2.1
Oil pumpTy p e
Drive systemInternal involute gear type oil pump (non crescent type)
Engine driven
Gear change
deviceType Forward 4-step, reverse 1-step planetary gear type
Shift position“P” range Gear in neutral, output shaft fixed, engine start
“R” range Reverse
“N” range Gear in neutral, engine start
“D” range Forward 1st ↔ 2nd ↔ 3rd ↔ 4th automatic gear
change
“3” rangeForward 1st ↔ 2nd ↔ 3rd ← 4th automatic gear
change
“2” range Forward 1st ↔ 2nd ← 3rd automatic gear change
“L” rangeForward 1st ← 2nd ← 3rd reduction, and fixed at 1st
gear
Gear
ratio1st 2.875 Number of teeth Front sun gear: 24
2nd 1.568 Rear sun gear: 30
3rd 1.000 Long planet pinion: 20
4th (overdrive gear) 0.697 Short planet pinion: 19
Reverse (reverse gear) 2.300 Ring gear: 69
Control elementsWet type multiple-disc clutch... 3 sets
Wet type multiple-disc brake... 3 sets
One-way clutch... 2 sets
Reduction gear ratio 1.023
Final gear reduction ratio 4.277
Lubrication Lubrication system Force feed system by oil pump
Cooling Cooling system Radiator assisted cooling (water-cooled)
Fluid used SUZUKI ATF 3317 or Mobil ATF 3309

Downloaded from www.Manualslib.com manuals search engine 5A-6 Automatic Transmission/Transaxle:
Clutch / Brake / Planetary Gear Function of Automatic TransaxleS6RW0D5101002
Functions
12
4
3 5 6 7
89
1011
1213
14
15 16 17
18
19
I4RS0A510001-01
1. Input shaft and intermediate shaft 8. One-way No.2 clutch 15. Front sun gear
2. Direct clutch 9. 2nd brake 16. Rear sun gear
3. Reduction drive gear 10. One-way No.1 clutch 17. Final drive gear
4. Planet carrier 11. O/D and 2nd coast brake 18. Reduction driven gear
5. Short planet pinion 12. Reverse clutch 19. Final driven gear
6. Long planet pinion 13. Forward clutch
7. 1st and reverse brake 14. Ring gear
Part name Function
Forward clutch Meshes intermediate shaft and front sun gear
Direct clutch Meshes input shaft and planet carrier
Reverse clutch Meshes intermediate shaft and rear sun gear
O/D and 2nd coast brake Fixes rear sun gear
2nd brake Fixes rear sun gear
1st and reverse brake Fixes planet carrier
One-way No.1 clutch Prevents rear sun gear from turning counterclockwise
One-way No.2 clutch Prevents planet carrier from turning counterclockwise

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-7
Table of Component OperationS6RW0D5101003
{: ON
×: OFF
U: ON only when TCC is operating
A/T Diagnosis General DescriptionS6RW0D5101004
This vehicle is equipped with an electronic transaxle control system, which controls the automatic shift up and shift
down timing, TCC operation, etc. suitably to vehicle driving conditions.
TCM has an On-Board Diagnosis System which detects a malfunction in this system.
When diagnosing a trouble in transaxle including this system, be sure to have full understanding of the outline of “On-
Board Diagnostic System Description” and each item in “Precautions in Diagnosing Trouble” and execute diagnosis
according to “A/T System Check” to obtain correct result smoothly.
NOTE
There are two type of On-Board Diagnostic System, Euro OBD system and non-Euro-OBD system
depending on the vehicle specification.For identification, refer to “Precaution on On-Board Diagnostic
(OBD) System in Section 1A”.

Selector
positionGear
positionPart
Shift solenoid
valve-A (No.1)Shift solenoid
valve-B (No.2)TCC solenoid
valveForward
clutchDirect clutchReverse
clutch
PParking{{× ×××
R Reverse{{×××{
N Neutral{{× ×××
D1st{{×{××
2nd{××{××
3rd××U{{×
4th×{U×{×
21st{{×{××
2nd{××{××
L1st{{×{××
Selector
positionGear
positionPart
O/D and 2nd
coast brake2nd brake1st and
reverse brakeOne-way No.1
clutchOne-way No.2
clutch
PParking×××××
R Reverse××{××
N Neutral×××××
D1st××××{
2nd×{×{×
3rd×{×××
4th{{×××
21st××××{
2nd{{×{×
L1st××{×{

Downloaded from www.Manualslib.com manuals search engine 5A-8 Automatic Transmission/Transaxle:
On-Board Diagnostic System DescriptionS6RW0D5101005
NOTE
There are two types of OBD system
depending on the vehicle specification.For
identification, refer to “Precaution on On-
Board Diagnostic (OBD) System in Section
1A”.

For automatic transaxle control system, TCM has the
following functions.
• For Euro OBD model, when the ignition switch is
turned ON with the engine at a stop, MIL (1) turns ON
to check the bulb of the MIL.
• For Euro OBD model, when TCM detects a
malfunction in A/T control system TCM desires turning
on MIL and stores malfunction DTC in TCM memory.
(If it detects that continuously 3 driving cycles are
normal after detecting a malfunction, however, it
makes MIL turn OFF although DTC stored in its
memory will remain.)
• For Euro OBD model, it is possible to communicate
with TCM through data link connector (DLC) (2) by
using not only SUZUKI scan tool (3) but also CAN
communication OBD generic scan tool. (Diagnostic
information can be checked and erased by using scan
tool.)
• For non-Euro-OBD model, when ignition switch is
turned ON and no malfunction in A/T control system is
detected, transmission warning light (4) lights for
about 2 seconds after ignition switch is turned ON and
then goes OFF for bulb check.• For non-Euro-OBD model, when TCM detects a
malfunction in A/T control system, it indicates
transmission warning light (4) and stores malfunction
DTC in its memory.
• For information about the following items, refer to “On-
Board Diagnostic System Description in Section 1A”.
– Warm-up cycle
– Driving cycle
– 2 driving cycle detection logic
– Pending DTC
– Freeze frame date
1
3 2
4
I6RW0B510001-01