Dtc P1674: Can Communication (Bus Off Error) - Suzuki Swift Sport 2004 Service & Repair Manual

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 referring 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.
Step
1 Was "Engine and Emission Control System Check"
performed?
2 DTC check
1) Check DTC of TCM referring to "DTC Check in Section
5A".
Is there any DTC(s)?

DTC P1674: CAN Communication (Bus Off Error)

Wiring Diagram
ESP® model
4
5
6
[A]
15 11
14 13 12
30 28 27 26
29
44
45 43 42 41
60 59 58 57 56
[B]
G37
11 10 9 8 7 6 5 4
22 21 20 19 18 17 16 15
[D]
20 19 18 16 15 14
37 36 34 33 32 31 30 29
[A]: ECM connector (viewed from harness side)
[B]: BCM connector (viewed from harness side)
[C]: Combination meter connector (viewed from harness side)
[D]: Keyless start control module connector (viewed from harness side)
[E]: Steering angle sensor connector (viewed from harness side)
[F]: ESP® control module connector (viewed from terminal side)
Action
G54-10 RED
G54-9 WHT
G28-8 RED
G28-10
WHT
G28-9 WHT
G28-7 RED
G49-19 RED
G49-18 WHT
E23
10 7 6 5 4 3 2 1
9 8
25 24 23 22 21 20 19 18
17 16
40 39 38 37 36 35 34 33 32 31
55 54 53 52 51 50 49 48 47 46
E46
7 6 5 4 3 2 1
3 2 1
14 13 12 14 13 12 11 10 9 8
G49
11 10 9 8 7 6 5 4 3
24 23
Engine General Information and Diagnosis:
Go to Step 2.
Go to applicable DTC
diag. flow.
7
C37
15 14 13 12 11 10 9 8 7 6
28 27 26 25 24 23 22 21
30 29
44
45 43 42 41 40 39 38 37 36
60 59 58 57 56 55 54 53 52 51
[C]
G28
16 15 14 13 12 11 10 9 8 7
32 31 30 29 28 27 26 25 24 23
[E]
10 9
2 1
1. ECM
2. ESP® control module
3. BCM
4. Steering angle sensor
5. Combination meter
6. Keyless start control module
7. CAN junction connector
Yes
Go to "Engine and
Emission Control
System Check".
Substitute a known-
good ECM and recheck.
RED E23-3
WHT E23-18
1
WHT E85-46
RED E85-42
2
RED E85-13
E85-44
WHT
WHT E46-2
RED E46-1
3
RED G37-4
WHT G37-2
[F]
E85
32
5 4 3 2 1
20 19 18 17
17 16
33
18
32 31 34
35 34 33
19
35
50 49
48 47 46
20
36
21
37
22
38
23
39
24
40
25
41
26
42
27
43
6 5 4 3 2 1
28
44
22 21 20 18 17
19
29
45
30
46
31
G54
47
3 2 1
1A-145
No
S7RS0B1104062
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I7RS0B110014-02