2008 SUZUKI SWIFT module can

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)

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-19
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

Downloaded from www.Manualslib.com manuals search engine 5A-22 Automatic Transmission/Transaxle:
) P1702 Internal control module memory check
sum error • Power supply for all solenoid valves is cut.
• Gear position is fixed in 3rd gear.
• Line pressure control at gear shifting is inhibited.
• Lock-up function is inhibited to operate.
) P1703 CAN invalid data - TCM In case of throttle position signal malfunction:
• Throttle opening used for line pressure control is assumed
to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate. Line pressure control at gear shifting is inhibited.
• Garage shift control is inhibited.
• Learning control is inhibited.
In case of engine coolant temperature signal malfunction:
• Slip controlled lock-up function is inhibited to operate.
• After 15 minutes pass from detecting malfunction, engine coolant temperature is assumed to be normal operating
temperature, and controls of overdrive and lock-up is
released from inhibition.
In case of engine revolution signal malfunction:
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Garage shift control is inhibited.
• Learning control is inhibited.
In case of engine torque signal malfunction:
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Upshifting to 4th gear is inhibited.
• Learning control is inhibited.
) P1723 Range select switch malfunction “3” position switch is assumed to be OFF.
) P1774 Control module communication bus off • Throttle opening used for line pressure control is assumed
to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Engine revolution is assumed to be 0 RPM.
• After 15 minutes pass from detecting malfunction, engine coolant temperature is assumed to be 90 °C (194 °F).
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Upshifting to 4th gear is inhibited.
• Garage shift control is inhibited.
• Learning control is inhibited.
DTC No. Trouble area Fail-safe operation

Downloaded from www.Manualslib.com manuals search engine 5A-44 Automatic Transmission/Transaxle:
DTC P0602: Control Module Programming ErrorS7RS0B5104048
System Description
Internal control module is installed in ECM.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with ignition switch turned OFF.
2) Clear DTC, pending DTC and freeze frame data by using scan tool.
3) Start engine and run it at idle if possible.
4) Check DTC.
DTC Troubleshooting
DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL input)S7RS0B5104023
Wiring DiagramDTC detecting condition Trouble area
Data programming error (1 driving cycle detection logic) TCM
Step Action YesNo
1 DTC check
1) Clear DTC referring to “DTC Clearance”.
2) Turn ignition switch to OFF position.
3) Turn ignition switch to ON position and check DTC.
Is DTC P0602 still indicated? Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
2 TCM reprogramming check
Was reprogramming of TCM executed? Execute reprogramming
of TCM correctly once
again.Go to Step 3.
3 TCM power ground circuit check
1) Check TCM power supply circuit and ground circuit
referring to “TCM Power and Ground Circuit Check”.
Are check results OK? Substitute a known-
good TCM and recheck.
Repair TCM power or
ground circuit.
1. TCM
3. Backup lamp
2. Transmission range sensor [A]: Terminal arrangem ent of TCM connector (viewed from harness side)
2P
R
N
D 2 L 3
1
PNK/BLK
RED
GRN
GRN/ORN
GRN/YEL
IG11
RED/BLK
LT GRN/BLK
C35-20
C35-1
C35-8
C35-7
C35-19
C35-18
C34
20 19
87
18
1
C35
[A]
I4RS0A510010-01

Downloaded from www.Manualslib.com manuals search engine 5A-68 Automatic Transmission/Transaxle:
DTC P1702: Internal Control Module Memory Check Sum ErrorS7RS0B5104035
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC in TCM memory.
3) After 10 seconds passed from turning ignition switch ON, check DTC.
DTC Troubleshooting
DTC P1703: Can Invalid Data - TCMS7RS0B5104036
DTC Detecting Condition and Trouble Area
When abnormality either on the gear shift control signal from ECM is detected by TCM, TCM sets DTC P1703.
DTC Troubleshooting DTC detecting condition Trouble area
Calculation of current data stored in TCM is not correct comparing with
pre-stored checking data in TCM. TCM
Step
Action YesNo
1 Is DTC P1702 detected after performing “DTC Confirmation
Procedure”? Faulty TCM.
Replace TCM.Could be a temporary
malfunction of TCM.
Step
Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 DTC check
1) Check DTC of ECM referring to “DTC Check in Section
1A”.
Is there any DTC(s)? Go to applicable DTC
diag. flow.
Substitute a known-
good TCM and recheck.
If OK, substitute a
known-good ECM and
recheck.

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-71
DTC P1774: CAN Communication Bus OffS7RS0B5104038
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with ignition switch turned OFF.
2) Clear DTC.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
REDWHTE03-6E03-12
1
4
7
REDWHT
2
[C]
[B]
G37E46
1234567
1234567
891011
891011
121314 121314
151617
18
19202122 [E]65
1615 14131211 43
2423 2122 10 9 8 7
21
1920 1817
C3417 16
26 2515 14
65 3
42
13 12
23 2224 1110 9
212019 87
18
1
C35
[F]
REDWHTC37-13C37-12REDWHTC34-17C34-7
3
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[D] [A]
G49
E23-3E23-18
5
REDWHTG28-7G28-9REDWHTG49-19G49-18
6
REDWHTE03-10E03-8
G37-4G37-2
REDWHTE46-1E46-2REDWHTREDWHTG28-8G28-10
RED/BLKWHT/BLKG37-3G37-1
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
E23C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 33 1
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
1213
238
G281234567
8
910111213141516
1718
19
20
212223242526272829303132
I6RS0C510008-01
1. ABS control module [A]: Terminal arrangement of ABS control module connector (viewed from terminal side)
2. ECM [B]: Terminal arrangement of BCM connector (viewed from harness side)
3. TCM [C]: Terminal arrangement of ECM connector (viewed from harness side)
4. BCM [D]: Terminal arrangement of combination meter connector (viewed from harness side)
5. Combination meter [E]: Terminal arrangement of TCM connector (viewed from harness side)
6. Keyless start control module [F]: Terminal arrangement of Keyless start control module connector (viewed from harness side)
7. DLC
DTC detecting condition Trouble area
Transmission error that is incons istent between transmission data and
transmission monitor (CAN bus monitor) data is detected more than 7
times continuously. •ECM
•BCM
•TCM
• ABS control module
• Combination meter
• Keyless start control module
• CAN circuit

Downloaded from www.Manualslib.com manuals search engine 5A-72 Automatic Transmission/Transaxle:
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure:” and confirm
that the trouble has been corrected.

Step Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Control module connector check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck DTC.
Is there DTC P1774? Go to Step 3.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”
3 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 4.
Repair circuit.
4 DTC check
1) Turn ignition switch to OFF position.
2) Connect connectors of disconnected control modules
communicating by means of CAN.
3) Disconnect connector from any one of control modules other than BCM and TCM.
4) Recheck TCM for DTC.
Is DTC P1774 detected? Disconnect connectors
of control modules other
than the one whose
connector is
disconnected in Step 3)
one by one and check
that DTC P1774 is
detected by TCM each
time connector is
disconnected. When
DTC P1774 is not
detected by TCM while
checking in this way, go
to description under
“NO” below. If DTC
P1774 is detected by
TCM, go to Step 5.Check power and
ground circuit of control
module disconnect in
Step 3). If circuit is OK,
substitute a known-
good control module
disconnected in Step 3)
and recheck.
5 DTC check of BCM
1) Turn ignition switch to OFF position.
2) Disconnect connector from all control modules other
than BCM.
3) Check BCM for DTC referring to “DTC Check in Section 10B”
Is DTC U1073 (No. 1073) detected? Substitute a known
good BCM and recheck.
Substitute a known
good TCM and recheck.

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-73
DTC P1777: TCM Lost Communication with ECM (Reception Error)S7RS0B5104040
Wiring Diagram
Refer to “DTC P1774: CAN Communication Bus Off”
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure:” and confirm
that the trouble has been corrected.

DTC detecting condition Trouble area
Reception error of communication data fo r ECM is detected more than specified
time continuously. •ECM
•TCM
• CAN circuit
Step
Action YesNo
1 Was “A/T System Check” performed? Go to Step 2.Go to “A/T System
Check”.
2 Control module connector check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck DTC.
Is there DTC P1777? Go to Step 3.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
3 DTC check
1) Check ECM for DTC referring to “DTC Check in Section
1A”.
Is there DTC P1674? Go to “DTC P1674:
CAN Communication
(Bus Off Error) in
Section 1A”.
Check ECM power and
ground circuit. If circuit
is OK, CAN
communication circuit
between ECM and ABS
hydraulic unit / control
module is open circuit.
4 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Check TCM power and
ground circuit. If circuit
is OK, substitute a
known-good TCM and
recheck.
Repair circuit.