Suzuki Grand Vitara JB416 / JB420 (ESP model). Manual — part 111
10E-11 Keyless Start System:
DTC No. 31: Lost Communication with BCM
S5JB0EA504020
Wiring Diagram
WHT
RED
WHT
RED
G44-18
G44-19
G44
[A]
[B]
[C]
[H]
[G]
1
2
3
4
5
6
7
8
9
10
11
14
15
16
36
34 33 32
30 29
24 23
37
18
19
20
G28-8
G28-10
WHT/BLU
WHT/BLU
WHT/RED
WHT/RED E23-4
E23-19
WHT
RED
E53-13
E53-42
E53-44
E53-46
WHT
RED
E92-17
E92-7
WHT
RED
E91-22
E91-23
WHT
RED
RED
G31-1
G31-3
G31-4
6
5
16 15 14 13 12 11
4 3
24 23
21
22
10 9
8
7
2
1
19
20
18 17
E92
2 1
E23
3
4
18
19
5
6
7
10
11
17
20
47 46
49
50
51
21
22
52
16
25
9
24
14
29
55
57
5453
59
60
58
26
27
28
15
30
56
48
32 31
34
35
36
37
40
42
3938
44
45
43
41
33
12
13
23
8
1
2
3
4
5
6
7
8
9
10
11
17
1615141312
2221201918
G28
[F]
G31
E91
1
2
3
4
7
8
9
10
11
14
15
16
36
34
35
24 23
21
22
28 27
25
26
37
39 38
40
18 17
13 12
19
20
1
2
3
10
11
12
16
17
18
15 14 13
19
20
21
25
26
5
6
[E]
[D]
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
8 7 6 5 4 3 2 1
9
10
11
12
13
14
15
16
G31-2
WHT
1
2
3
4
9
5
6
7
8
11
WHT
RED
G45-9
G45-10
10
[L]
[K]
E03-12
E03-10
E03-6
E03-8
[J]
E53
16
1
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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
[I]
G45
10 9
3 2 1
I5JB0DA50004-01
[A]: Keyless start control module connector (viewed from harness side)
1. BCM
[B]: ECM connector (viewed from harness side)
2. 4WD control module (if equipped)
[C]: TCM connector (viewed from harness side)
3. TCM (if equipped)
[D]: DLC (viewed from terminal side)
4. Keyless start control module
[E]: ABS control module connector (viewed from terminal side)
5. DLC
[F]: Combination meter connector (viewed from harness side)
6. ECM
[G]: 4WD control module connector (viewed from harness side)
7. ABS control module
[H]: BCM connector (viewed from harness side)
8. Combination meter
[I]: Steering angle sensor connector (viewed from harness side)
9. Junction connector
[J]: ESP
® control module connector (viewed from terminal side)
10. ESP
® control module
[K]: Vehicle equipped with ESP
®
11. Steering angle sensor (if equipped)
[L]: Vehicle not equipped with ESP
®
Keyless Start System: 10E-12
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC referring to “DTC Clearance in related manual”.
2) Turn ignition key knob by pushing ignition key knob.
3) Check DTC referring to “DTC Check”.
Troubleshooting
DTC detecting condition
Trouble area
Keyless start control module cannot receive data
sent by CAN from BCM
• CAN communication circuit
• Keyless start control module
• BCM
Step
Action
Yes
No
1
Was “Keyless Start System Check” performed?
Go to Step 2.
Go to “Keyless Start
System Check in related
manual”.
2
DTC check of keyless start control module
Is DTC No. 33 detected?
Go to “DTC No. 33:
Control Module
Communication Bus
Off”.
Go to Step 3.
3
DTC check of BCM
1) Check BCM for DTC referring to “DTC Check in Section
10B in related manual”
Is DTC U1073, DTC U1100 or DTC U1101 detected?
Go to applicable DTC
diag flow.
Go to Step 4.
4
CAN communication circuit check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Disconnect connectors from BCM and keyless start
control module.
3) Check CAN communication circuit between BCM and
keyless start control module for open, short and high
resistance.
Is each CAN communication circuit in good condition?
Go to Step 5.
Repair circuit.
5
CAN communication circuit check
1) Disconnect connectors of all control modules
communicating by means of CAN.
2) Check CAN communication circuit between control
modules other than Step 4 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 of disconnected control modules
communicating by means of CAN.
2) Check ECM for DTC.
Is DTC P1678 detected?
Check BCM power and
ground circuit. If circuit
is OK, substitute a
known-good BCM and
recheck.
Go to Step 7.
10E-13 Keyless Start System:
DTC No. 33: Control Module Communication Bus Off
S5JB0EA504021
Wiring Diagram
Refer to “DTC No. 31: Lost Communication with BCM”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC referring to “DTC Clearance in related manual”.
2) Start engine and run it for 1 min. or more.
3) Check DTC referring to “DTC Check”.
7
DTC check of keyless start control module
1) Turn ignition switch to OFF position.
2) Disconnect connector of any one of control module other
than keyless start control module.
3) Recheck keyless start control module for DTC.
Is DTC No.31 detected?
Using same method,
disconnect connectors
of control module other
than keyless start
control module one by
one to check if DTC
No.31 is detected.
If DTC No.31 is
detected even through
connector of control
module other than
keyless start control
module is disconnected,
substitute a known-
good keyless start
control module and
recheck.
Check power and
ground circuit of
disconnected control
module and recheck. If
circuit is OK, substitute
a known-good
disconnected control
module and recheck.
Step
Action
Yes
No
DTC detecting condition
Trouble area
Communication is not available with all control
modules connected by CAN
• CAN communication circuit
• Combination meter
• Keyless start control module
• BCM
• 4WD control module (if equipped)
• ABS or ESP
® control module
• TCM (A/T model)
• ECM
• Steering angle sensor (if equipped)
Keyless Start System: 10E-14
Troubleshooting
Step
Action
Yes
No
1
Was “Keyless Start System Check” performed?
Go to Step 2.
Go to “Keyless Start
System Check in related
manual”.
2
Control module connector check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck keyless start control module for DTC.
Is DTC No. 33 detected?
Go to Step 3.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section 00
in related manual”.
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 of keyless start control module
1) Turn ignition switch to OFF position.
2) Connect connectors of disconnected control modules
communicating by means of CAN.
3) Disconnect connector of any one control module other
than keyless start control module and combination
meter.
4) Recheck DTC for keyless start control module.
Is DTC No.33 detected?
Using same method,
disconnect connectors
of control module other
than keyless start
control module and
combination meter one
by one to check if DTC
No.33 is detected.
If DTC No.33 is
detected even though
connector of control
module other than
keyless start control
module and
combination meter is
disconnected, substitute
a known-good keyless
start control module and
recheck.
Check power and
ground circuit of
disconnected control
module. If circuit is OK,
substitute a known-
good disconnected
control module and
recheck.
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