Suzuki GRAND VITARA Owner's Manual page 732

3C-44 Transfer: Motor-Shift Type (Transfer with Shift Actuator)
Step
4 Wire harness check
1) Disconnect connector from 4WD control module
connector "E91" with ignition switch OFF.
2) Check for proper connection to "E91-7" terminal of 4WD
control module connector.
3) If OK, measure resistance between "BLK/ORN" terminal
of CPP switch connector and "E91-7" terminal of 4WD
control module connector.
Ω
Is it 1 M or more?
DTC U1073: Control Module Communication Buss Off
Wiring Diagram
G31-2
G31-4
G31-1
1
G31-3
E91-22
E91-23
2
E92-17
E92-7
3
G44-19
G44-18
4
[A]
20 19 18 16 15 14
37 36 34 33 32 31 30 29
[B]
E23
15 14 13 12 11 10 9 8 7 6 5
26 20
30 29 28 27 25 24 23 22 21 19
44
45 43 42 41 40 3938 37 36 35 34
59 58 57 56 55 5453 52 51 50 49
60
[C]
E92
6 5
4 3 2 1
16 15 14 13 12 11 10 9 8
24 23 22 21 20 19 18 17
Action
RED
WHT
RED
WHT
RED
WHT
RED
WHT
RED
WHT
G44
11 10 9 8 7 6 5 4 3
24 23
C37
4 3 2 1 15 14 13 12 11 10 9 8
18 30 29 28 27 26 25 24 23
17 16
44
33 32 31 45 43 42 41 40 3938
60 59 57 56 55 5453
48 47 46 58
E93
6 5 4 3 2
7 17 16 15 14 13 12 11 10 9
21 20 19
26 25 24 23 22
Substitute a known-
good 4WD control
module and recheck.
8
WHT/RED E23-4
WHT/BLU E23-19
E03-8
WHT/BLU
E03-10
WHT/RED
RED E03-12
WHT
E03-6
G28-10
RED
WHT G28-8
[E]
10 9 8
2 1
2221201918
[F]
7 6 5 4 3 2 1
22 21 20 19 18 17 16
12
37 36 35 34 33 32 31
26
52 51 50 49
48 47 46
[G]
20 19 18 17 16 15
40 39 38 37 36 35
1
8 7
18
Yes
"BLK/ORN" wire is
shorted to ground
circuit.
[H]
16 15 14
8 7 6
[D]
5
6
7
G28
7 6 5 4 3 2 1
17 1615141312 11
E91
11 10 9 8 7 5 4
6
25 24 23 22 21 20 18
19
G31
14 13 12 11 10 9 8 7
34 28 27 26 25
No
S5JB0A3314052
13 12 11 10 9
5 4 3 2 1
E03
14 1
15 2
16 3
17 4
18 5
19 6
20 7
21 8
22 9
23 10
24 11
25 12
26 13
3 2
1
17 16 14 13
15
4 3 2 1
24 23 22 21
I5JB0A332021-01