PS control module SUZUKI SWIFT 2008 2.G Service Workshop Manual
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Page 642 of 1496

Downloaded from www.Manualslib.com manuals search engine 5-ii Table of Contents
DTC P1878: Torque Converter Clutch Shudder .......................................................... 5A-75
DTC P2762: Torque Converter Clutch (TCC)  Pressure Control Sole noid Control Circuit 
Range /Performance ....................................... 5A-76
DTC P2763: Torque Converter Clutch  Pressure Control Sole noid Control Circuit 
High ................................................................. 5A-78
DTC P2764: Torque Converter Clutch Circuit  Pressure Control Sole noid Control Circuit 
Low ................................................................. 5A-80
Inspection of TCM and Its Circuits .................... 5A-82
TCM Power and Ground Circuit Check ............. 5A-86
Brake Interlock System Inspection .................... 5A-87
Repair Instructions ........... .................................5A-88
Learning Control Initializat ion ............................ 5A-88
A/T Fluid Level Check ....................................... 5A-89
A/T Fluid Change .............................................. 5A-90
Select Lever Components ... .............................. 5A-90
Select Lever Assembly Removal and  Installation ....................................................... 5A-90
Select Lever Knob Installa tion........................... 5A-90
Select Lever Inspection .... ................................. 5A-91
“3” Position Switch Inspec tion ........................... 5A-91
Shift Lock Solenoid Inspec tion .......................... 5A-91
Shift Lock Solenoid Replacement ..................... 5A-91
Select Cable Components ................................ 5A-92
Select Cable Removal and Installation ............. 5A-92
Select Cable Adjustment ................................... 5A-93
Key Interlock Cable Removal and Installation... 5A-93
Transmission Range Sensor (Shift Switch)  Inspection and Adjustment .............................. 5A-95
Output Shaft Speed Sensor Removal and  Installation ....................................................... 5A-96
Output Shaft Speed Sensor  Inspection ............. 5A-96
Input Shaft Speed Sensor Removal and  Installation ....................................................... 5A-96
Input Shaft Speed Sensor Inspection................ 5A-97
Transmission Fluid Temperature Sensor  Removal and Installation ................................. 5A-97
Transmission Fluid Temperature Sensor  Inspection ........................................................ 5A-98
Solenoid Valves (Shift Solenoid Valves and  Timing Solenoid Valve) Removal and 
Installation ....................................................... 5A-98
Solenoid Valves (Shift Solenoid Valves, and  Timing Solenoid Valve) Inspection .................. 5A-99
Pressure Control Soleno id Valves (Pressure 
Control Solenoid and  TCC Pressure Control 
Solenoid) Removal and Inst allation .............. 5A-101
Pressure Control Solenoid Valve Inspection ... 5A-101
Transmission Control Module (TCM)  Removal and Installation ............................... 5A-102
A/T Relay Inspection ....................................... 5A-103
Differential Side Oil Seal  Replacement ........... 5A-103
A/T Fluid Cooler Hoses Replacement ............. 5A-104
Automatic Transaxle Unit  Components........... 5A-105
Automatic Transaxle Unit Dismounting and  Remounting ................................................... 5A-106
Automatic Transaxle Asse mbly Components . 5A-108 Automatic Transaxle Unit
 Disassembly........... 5A-110
Oil Pump Assembly Components ................... 5A-121
Oil Pump Assembly Disassembly and  Reassembly .................................................. 5A-122
Oil Pump Assembly Inspection ....................... 5A-122
Direct Clutch Assembly Components.............. 5A-124
Direct Clutch Assembly Preliminary Check ..... 5A-124
Direct Clutch Assembly Disassembly and  Reassembly .................................................. 5A-125
Direct Clutch Assembly Inspection.................. 5A-127
Forward and Reverse Clutch Assembly  Components .................................................. 5A-128
Forward and Reverse Clutch Assembly  Preliminary Check ......................................... 5A-129
Forward and Reverse Clutch Assembly  Disassembly and Reassembly ...................... 5A-129
Forward and Reverse Clutch Assembly  Inspection ...................................................... 5A-133
2nd Brake Piston Assembly Components ....... 5A-134
2nd Brake Piston Assembly Disassembly and  Reassembly .................................................. 5A-134
Transaxle Rear Cover (O/D and 2nd Coast  Brake Piston) Assembly Components........... 5A-135
Transaxle Rear Cover (O/D and 2nd Coast  Brake Piston) Assembly Disassembly and 
Reassembly .................................................. 5A-136
Transaxle Rear Cover (O/D and 2nd Coast  Brake Piston) Assembly Inspection............... 5A-137
Countershaft Assembly Co mponents.............. 5A-138
Countershaft Assembly Disassembly and  Reassembly .................................................. 5A-138
Valve Body Assembly Components ................ 5A-139
Valve Body Assembly Disassembly and  Reassembly .................................................. 5A-140
Differential Assembly Components ................. 5A-141
Differential Assembly Disassembly and  Reassembly .................................................. 5A-142
Differential Assembly Inspection ..................... 5A-143
Torque Converter Housing Disassembly and  Reassembly .................................................. 5A-144
Transaxle Case Disassembly and  Reassembly .................................................. 5A-146
Automatic Transaxle Unit Inspection and  Adjus
 tment .................................................... 5A-147
Automatic Transaxle Unit Assembly ............... 5A-150
Specifications .................. .................................5A-167
Tightening Torque Specifications .................... 5A-167
Special Tools and Equipmen t .........................5A-168
Recommended Service Material ..................... 5A-168
Special Tool .................................................... 5A-168
Manual Transmission/Tr ansaxle ............ 5B-1
General Description .............................................5B-1
Manual Transaxle Construction and Servicing .... 5B-1
Diagnostic Information and Procedures ............5B-3 Manual Transaxle Symptom  Diagnosis............... 5B-3
Repair Instructions ............ ..................................5B-3
Manual Transaxle Oil Change............................. 5B-3
Differential Side Oil Seal Replacement ............... 5B-4  
Page 645 of 1496

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle:  5A-1
Transmission / Transaxle
Automatic Transmission/Transaxle
Precautions
Precautions in Diagnosing TroubleS7RS0B5100001
• 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 clea r memorized information 
in TCM memory.
• Diagnostic information stored in TCM memory can be  cleared as well as checked by using SUZUKI scan 
tool or 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 wh ich 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.
– Generic scan tool displays DTC detected by each  of ECM and TCM simultaneously.
• Using SUZUKI scan tool the diagnostic information  stored in TCM memory can be checked and cleared 
as well. Before its use, be  sure to read Operator’s 
Manual supplied with it carefully to have good 
understanding of its functions and usage.
• Be sure to read “Precautions for Electrical Circuit  Service in Section 00” befo re 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 ECUs , ECM, TCM, ABS control 
module, keyless start control module and BCM is 
established by CAN (Controller Area Network). 
Therefore, handle CAN communication line with care 
referring to “Precaution for CAN Communication 
System in Section 00”.
Precautions for Disassembly and ReassemblyS7RS0B5100002
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.  
Page 647 of 1496

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General Description
A/T DescriptionS7RS0B5101001
This automatic transaxle is electronic control full automatic transaxle with forward 4-speed 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 planet ary 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 va lves, TCC pressure control solenoid valve (lin ear 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 prov ided 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 s witch 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 forw ard 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 opti mum 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 subs equent line pressure applied during upshifting is weakened.
Slip controlled lock-up function
Even at a lower speed than when the TCC gets engaged completely, control over the TCC pressure control solenoid 
works to cause the TCC to slip (be engaged slightly), ther eby improving the transmission efficiency. While such slip 
control is being executed, the oil pressure applied to the  TCC is controlled by the TCC pressure control solenoid so 
that the difference between the engine speed and the  input shaft speed becomes close to the specified value.
Also, during deceleration, the TCC is made to slip (be enga ged slightly) to raise the engine speed and enlarge the fuel 
cut operation range so that better fuel consumption is achieved.
Due to this reason, it is absolutely necessary for the automati c transmission to use ATF suitable for slip control. Use of 
any fluid other than the specified ATF may cause j uddering or some other faulty condition to occur.  
Page 653 of 1496

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CAN Communication System DescriptionS7RS0B5101007
Refer to “CAN Communication System Description in Section 1A” for CAN communication System description. TCM 
communicates control data with each control module as follows.
TCM Transmission Data
TCM Reception Data
DATA
TCM
Transmit
Transmission oil temperarure
signal
Torque request signal
Vehicle speed pulse signal
Transmission warning light
signal
Transmission actual gear position
signal
A/T select lever position signal
ECMCombination 
meterBCM
I7RS0B510001-03
Engine torque signal
Engine speed signal 
Throttle position signal
A/C compressor clutch signal 
Engine coolant temperature signal
Brake pedal switch signal
Reception data from ECM
Accelerator pedal position signalI7RS0B510002-03  
Page 654 of 1496

Downloaded from www.Manualslib.com manuals search engine 5A-10 Automatic Transmission/Transaxle: 
Schematic and Routing Diagram
Transmission Control Module (TCM) Wiring DiagramS7RS0B5102001
IG1
115
5
5
8
9
10 7
P
R
N
D
2
L
12
12V 2.5V
5V
12V
5V
12V
12V
12V
12V
WHT
BLK
BLK
BLK
BLK
PPLBLK/RED
BLK/ORN
IG11
RED/BLK
YEL/BLKYEL/BLU
LT GRN/BLK
+BB
WHT/RED
14
20
15
16
17
19
12V18
1
2
3
4
6
13 21
26
24
27
28 29
30
WHT
WHT
RED
RED
WHT
RED
65
16 15 14 13 12 11 43
24 23 2122 10 9 8 721
1920 18 17
C34
17 16
26 25
15 14
65 3
42
13 12
23 2224 11 10 9
21 20 19 87
18
1
C35
[A]
22
25
YELYEL/GRN
WHT
P
N
BRN
LT GRN
ORN
BLK/YEL
BLU/BLK
GRY
LT GRN/BLK WHT/BLU
WHT/BLK
C34-11
C34-12
C34-16
C34-15
C34-14
C34-4
C34-2
C34-1
C34-23 C34-6
C34-24 C34-5
C34-3
RED
GRN
GRN/ORN PNK/BLK
GRN/YEL
LT GRN/BLKC35-6
C35-16
C35-23 C35-25
C35-20
C35-1
C35-8
C35-7
C35-19
C35-18 C34-17 C34-7
4IG11
12V
23
PPL/WHT
LT GRN
I6RS0C510005-01
1. TCM 12. Backup lamp 23. Starter motor relay
2. Input shaft speed sensor 13. Data link connector DLC 24. Ignition switch
3. Output shaft speed sensor 14. Transmission fluid temperature sensor 25. Starter motor
4. ECM 15. Shift solenoid valve-A (No.1) 26. “DOME” fuse
5. CAN driver 16. Shift solenoid valve-B (No.2) 27. “AT ETM” fuse
6. BCM 17. Timing solenoid valve 28. “IG SIG” fuse
7. Meter driver 18. TCC lock-up pressure control solenoid valve 29. “ST SIG” fuse
8. “3” position switch 19. Pressure control solenoid valve 30. “ST MOT” fuse
9. Shift lock solenoid 20. A/T [A]: Terminal arrangement of TCM connector 
(viewed from harness side)
10. Brake light switch 21. A/T relay
11. Transmission range sensor 22. Inhibitor switch (including transmission range sensor)  
Page 663 of 1496

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DTC TableS7RS0B5104005
NOTE
• A: Driving cycles when transmission warning light lighting and storing DTC in TCM memory.
• *1: Transmission warning light does not light up but TCM detects and stores DTC.
• For details of driving cycle, refer to  “On-Board Diagnostic System Description”.
 
DTC No.Detecting item Detecting condition
(DTC will set when detecting) A
 )  P0602 Control module  programming error D ata programming error. *1, 1 driving cycle
 )  P0705 Transmission range sensor circuit 
malfunction (PRNDL input) Multiple signals are inputted 
simultaneously. 1 driving cycle
 )  P0707 Transmission range sensor circuit 
low No sensor signal is inputted.
2 driving cycles
 )  P0712 Transmission fluid temperature 
sensor “A” circuit low Sensor output voltage is too low.
1 driving cycle
 )  P0713 Transmission fluid temperature 
sensor “A” circuit high Sensor output voltage is too high.
1 driving cycle
 )  P0717 Input / Turbine speed sensor circuit 
no signal No sensor signal is detected although output 
speed sensor signal is inputted.
1 driving cycle
 )  P0722 Output speed sensor circuit no signal No sensor signal is inputted although input 
speed sensor signal is inputted. 1 driving cycle
 )  P0787 Shift / Timing solenoid low Voltage of timing solenoid terminal is low 
although TCM is commanding timing solenoid 
to turn ON. 1 driving cycle
 )  P0788 Shift / Timing solenoid high Voltage of timing solenoid terminal is high 
although TCM is commanding timing solenoid 
to turn OFF. 1 driving cycle
 )  P0961 Pressure control solenoid “A” control 
circuit range / performance Difference between target current of control 
solenoid valve circuit and monitor current of 
control solenoid valve circuit is more than 
specification.
1 driving cycle
 )  P0962 Pressure control solenoid “A” control 
circuit low No electric flow is detected on pressure control 
solenoid circuit.
1 driving cycle
 )  P0963 Pressure control solenoid “A” control 
circuit high Too much electric flow is detected on pressure 
control solenoid circuit.
1 driving cycle
 )  P0973 Shift solenoid “A” control circuit low Voltage of shift solenoid terminal is low 
although TCM is commanding shift solenoid to 
turn ON. 1 driving cycle
 )  P0974 Shift solenoid “A” control circuit high Voltage of shift solenoid terminal is high 
although TCM is commanding shift solenoid to 
turn OFF. 1 driving cycle
 )  P0976 Shift solenoid “B” control circuit low Voltage of shift solenoid terminal is low 
although TCM is commanding shift solenoid to 
turn ON. 1 driving cycle
 )  P0977 Shift solenoid “B” control circuit high Voltage of shift solenoid terminal is high 
although TCM is commanding shift solenoid to 
turn OFF. 1 driving cycle
 )  P1702 Internal control module memory 
check sum error Calculation of current data stored in TCM is not 
correct comparing with pre-stored checking 
data in TCM.
1 driving cycle
 )  P1703 CAN invalid data - TCM TCM receives malfunction signal of throttle 
position
, engine coolan t temperature, engine 
revolution and engine torque from ECM. *1, 1 driving cycle
 )  P1723 Range select switch malfunction “3” position switch ON signal is inputted 
although transmission range switch signal is 
inputted P, R, N or L. range. *1, 1 driving cycle
 )  P1774 Control module communication bus 
off Transmitting and receiving error detected to 
TCM for specified time continuously.
1 driving cycle