2008 SUZUKI SWIFT TCM CAN

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-49
Troubleshooting
NOTE
When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the special
tool to ECM and/or the ECM connectors referri ng to “Inspection of ECM and Its Circuits”.

DTC P0010: “A” Camshaft Position Actuator CircuitS7RS0B1104013
System and Wiring DiagramStep Action Yes No
1 DTC check
1) Start engine and recheck DTC of ECM and TCM (for A/T
model) while engine running.
Is there any DTC(s)? Go to Step 2 of “Engine
and Emission Control
System Check”, Step 2
of “A/T System Check in
Section 5A”.Go to Step 2.
2 CAN communication line circuit check
1) Check CAN communication line circuit between
combination meter and ECM, TCM (for A/T model)
referring to Step 3 of “DTC P1674: CAN Communication
(Bus Off Error)”.
Is circuit in good condition? Substitute a known-
good combination meter
and recheck. If MIL still
remains OFF, substitute
a known-good ECM and
recheck.
Repair or replace CAN
communication circuit.
3
7
1[A]: 45
6
C37-58
C37-15
C37-30
E23-31BLK
BLK
BLK/ORN
RED
YEL
YEL/RED
YEL/GRN
C37-60
C37-59
3 2
1
E23 C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
BLK
I6RS0C110013-01
[A]: Oil flow
2. ECM4. Oil filter6. Oil pan
1. Oil control valve 3. Camshaft timing sprocket5. Oil pump7. Intake camshaft

Downloaded from www.Manualslib.com manuals search engine 1A-144 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC P1603: TCM Trouble Code DetectedS7RS0B1104061
Wiring Diagram
DTC Detecting Condition
When ECM receives a trouble code from TCM, which indicates that some problem occurred in sensor circuits and its
calculated values used for operations such as idle speed control, engine power control, and so on by TCM, ECM sets
DTC P1603. (TCM outputs the trouble code to ECM when TCM can not compute the engine control signal due to
malfunctions of sensor circuits used for gear shift control.) Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Battery voltage supply circuit check
1) Turn OFF ignition switch.
2) Remove ECM from its br acket with ECM connectors
connected.
3) With engine running, measure voltage between “E23-2” terminal of ECM connector and engine ground.
Is voltage 10 – 14 V? Poor “E23-2”
connection or
intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If wire and connections
are OK, substitute a
known-good ECM and
recheck.“RADIO” fuse blown,
“WHT” or “WHT/RED”
wire is circuit open or
short circuit.
E23
C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
1
RED
WHT
C37-13
C37-12
RED
WHTC34-7
C34-17
2
I6RS0C110026-01
1. ECM
2. TCM (for A/T model)

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-145
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC P1674: CAN Communication (Bus Off Error)S7RS0B1104062
Wiring Diagram
ESP ® model
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 DTC check
1) Check DTC of TCM referring to “DTC Check in Section
5A”.
Is there any DTC(s)? Go to applicable DTC
diag. flow.
Substitute a known-
good ECM and recheck.
[F]
E85
161
15
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3233
34
35
36
37
38
39
40
41
42
43
44
45
46
47
[D] 12345678910
11
141516
36 34 33 32 31 30 29 24 23
37
181920
G49
[A]
E23
C37
34
1819
567
10
11
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
34
1819
567
10
11
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
12
13
238
[C]G28
1234567
8
910
11
1213141516
1718
19
20
212223242526272829303132
[E] G54
109 321
[B]
G37E46
1234567 1234567
8910
11
8910
11
121314 121314
1516171819202122
4
6 1
2
3
REDWHT
REDWHT
REDWHT
REDWHT
REDWHT
E23-3E23-18
E85-42E85-46
E85-13E85-44
E46-1E46-2
G37-4G37-2
REDWHT
REDWHTG49-19G49-18
5
7
WHTG54-9REDG54-10
G28-8G28-10
G28-7REDG28-9WHT
I7RS0B110014-02
[A]: ECM connector (viewed from harness side)
1. ECM
[B]: BCM connector (viewed from harness side) 2. ESP® control module
[C]: Combination meter connector (viewed from harness side) 3. BCM
[D]: Keyless start control module connector (vie wed from harness side) 4. Steering angle sensor
[E]: Steering angle sensor connector (viewed from harness side) 5. Combination meter
[F]: ESP ® control module connector (viewed from terminal side) 6. Keyless start control module
7. CAN junction connector

Downloaded from www.Manualslib.com manuals search engine 1A-146 Engine General Information and Diagnosis:
Non ESP® model
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
REDWHTE03-6E03-12
6
3
7
REDWHT
1
[B]
[A]
G37E46
1234567
1234567
891011
891011
121314 121314
151617
18
19202122 [D]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
[E]
REDWHTC37-13C37-12REDWHTC34-17C34-7
2
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[C] [F]
G49
E23-3E23-18
4
REDWHTG28-7G28-9REDWHTG49-19G49-18
5
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
I6RS0C110027-01
[A]: BCM connector (viewed from harness side) 1. ECM
[B]: ECM connector (viewed from harness side) 2. TCM (A/T model)
[C]: Combination meter connector (viewed from harness side) 3. BCM
[D]: TCM connector (viewed from harness side) 4. Combination meter
[E]: Keyless start control module connector (viewed from harness side) 5. Keyless start control module
[F]: ABS control module connector (viewed from harness side) 6. ABS control module
DTC detecting conditionTrouble area
Transmission error that is inconsistent between
transmission data and transmission monitor (CAN bus
monitor) data is detected more than 7 times continuously.
(1 driving detection logic) •ECM
•BCM
• ABS/ESP®
control module
• TCM (A/T model)
• Keyless start control module
• Combination meter
• Steering angle sensor (ESP ® model)
• CAN communication circuit

Downloaded from www.Manualslib.com manuals search engine 1A-148 Engine General Information and Diagnosis:
DTC P1676: CAN Communication (Reception Error for TCM)S7RS0B1104064
Wiring Diagram
Refer to “DTC P1674: CAN Communication (Bus Off Error)”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• 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 for TCM is
detected for longer than specified time continuously.
(1 driving detection logic) •ECM
• TCM (for A/T model)
• CAN communication circuit
Step
Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Check CAN communication error for ECM
1) Check ECM for DTC.
Is there DTC P1674? Go to “DTC P1674:
CAN Communication
(Bus Off Error)”.
Go to Step 3.
3 ECM and TCM connector check
1) Check for proper connection at each ECM and TCM
connector terminals with ignition switch turned OFF.
2) If connections are OK, recheck ECM for DTC with engine running.
Is there DTC P1676? Go to Step 4.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
4 DTC check in TCM
1) Check DTC P1774 in TCM.
Is it indicated? Go to “DTC P1774:
CAN Communication
Bus Off in Section 5A”.
Go to Step 5.
5 CAN communication circuit check
1) Disconnect connectors of ECM and TCM.
2) Check CAN communication circuit between ECM and
TCM connectors for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 6.
Repair circuit.
6 DTC check of ECM
1) Connect connectors to ECM and TCM with ignition
switch turned.
2) Check ECM for DTC.
Does ECM communicate with control module other than
TCM (i.e. DTC P1678 and/or P1685 are not detected)? Substitute a known-
good TCM and recheck.
Substitute a known-
good ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-177
C37-10 WHTOxygen signal of
HO2S-1 0 – 1 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under 0.45 V
(“Reference
waveform No.10: ” and “Reference
waveform No.11: ”) While engine running at
2,000 r/min. for 1 min. or
longer after warmed up.
C37-11 BRN Oxygen signal of
HO2S-2 4 – 5 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under 0.45 V
(“Reference
waveform No.12: ”) While engine running at
2,000 r/min. or more after
vehicle running over 30
km/h, 19 mph for 5 min.
C37-12 WHT CAN (low)
(communication
line (active low
signal) to TCM (A/T
model) *0.5 – 2.5 V
(“Reference
waveform No.13: ”) Ignition switch turned ON
with engine stop. CAN communication line
signal is pulse. Pulse
signal displayed with a
regular frequency which
varies depending on
engine condition.
C37-13 RED CAN (high)
communication line
(active high signal)
to TCM (A/T
model) *2.5 – 4.5 V
(“Reference
waveform No.13: ”)
C37-14 GRY/
RED Output of 5 V
power source for
MAP sensor, A/C
refrigerant
pressure sensor
4.5 – 5.5 V Ignition switch turned ON. —
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON. —
C37-16 BLU/
RED Fuel injector No.3
output 10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform No.14: ”) Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-17 BLU/
ORNFuel injector No.4
output 10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform No.15: ”) Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-18 BRN/
YEL EGR valve
(stepper motor coil
4) output 10 – 14 V Ignition switch turned ON. —
*0 – 1 V ↑↓
10 – 14 V
(“Reference
waveform No.4: ”) Ignition switch is turned to
ST (cranking) position. Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
C37-19 WHT/
RED EGR valve
(stepper motor coil
3) output 10 – 14 V Ignition switch turned ON. —
*0 – 1 V ↑↓
1

0 – 14 V
(“Reference
waveform No.4: ”) Ignition switch is turned to
ST (cranking) position. Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
Terminal
No. Wire
color Circuit Normal voltage
ConditionRemarks

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-187
Reference waveform No.10
HOS2-1 signal (1) with engine idling
Reference waveform No.11
HO2S-1 heater signal (2) with engine idlingReference waveform No.12
HO2S-2 heater signal (4) with engine idling
Reference waveform No.13
CAN communication line signal from TCM with ignition
switch turned ON
Measurement
terminal
CH1: “C37-10” to “C37-57”
CH2: “C37-46” to “C37-58”
Oscilloscope
setting CH1: 500 mV/DIV, CH2: 20 V/DIV
TIME: 1 s/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
2. HO2S-1 heater signal
Measurement
terminal CH1: “C37-10” to “C37-57”
CH2: “C37-46” to “C37-58”
Oscilloscope
setting CH1: 500 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
1. HO2S-1 signal
3. OFF signal
4. ON signal
5. One duty cycle
I4RS0B110058-01
I4RS0B110059-01
Measurement
terminal CH1: “C37-11” to “C37-57”
CH2: “C37-47” to “C37-58”
Oscilloscope
setting CH1: 500 mV/DIV, CH2: 10 V/DIV
TIME: 2 s/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Vehicle driving at 60 km/h (37 mph) for 10 min.
• Engine at specified idle speed
1. HO2S-2 signal upper limit
2. HO2S-2 signal lower limit
3. Normal waveform range
Measurement
terminal CH1: “C37-13” to “C37-58”
CH2: “C37-12” to “C37-58”
Oscilloscope
setting CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 40
µs/DIV
Measurement
condition Ignition switch turned ON
(Signal pattern is depending on
engine condition)
1. CAN communication line signal (High)
2. CAN communication line signal (Low)
I4RS0B110060-01
I4RS0B110061-01

Downloaded from www.Manualslib.com manuals search engine 4E-25 ABS:
DTC U1073: Control Module Communication Bus OffS7RS0B4504018
Wiring Diagram
DTC Detecting Condition
Transmission error that is inconsistent between transmission data and transmission monitor (CAN bus monitor) data is
detected more than 7 times continuously.
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
I6RS0C450015-01
[A]: ABS control module connector (viewed from
terminal side) [F]: Keyless start control module connector
(viewed from harness side) 5. Combination meter
[B]: BCM connector (viewed from harness side) 1. ABS hydraulic unit / control module assembly 6. Keyless start control module (if equipped)
[C]: ECM connector (viewed from harness side) 2. ECM 7. Data link connector (DLC)
[D]: Combination meter connector (viewed from harness side) 3. TCM
[E]: TCM connector (viewed from harness side) 4. BCM