Suzuki Grand Vitara JB416 / JB420. Manual — part 184
3C-50 Transfer: Motor-Shift Type (Transfer with Shift Actuator)
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Start engine and run it for 1 min. or more.
3) Stop vehicle and check DTC.
Troubleshooting
DTC detecting condition
Trouble area
Reception error of communication data for TCM is detected for
longer than specified time continuously.
• CAN communication circuit
• TCM
• 4WD control module
Step
Action
Yes
No
1
Was “4WD control system check” performed?
Go to Step 2.
Go to “4WD Control
System Check: Motor-
Shift Type (Transfer with
Shift Actuator)”.
2
DTC check
1) Check DTC in 4WD control module.
Is DTC U1100 and DTC U1073 detected together?
Go to Step 3.
3
DTC check
1) Check DTC in TCM.
Is DTC P1774 detected?
Go to “DTC P1774:
CAN Communication
Bus Off in Section 5A”.
Go to Step 4.
4
Check each control module connectors
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck in 4WD control module.
Is DTC U1100 detected?
Go to Step 5.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
5
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.
Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-51
DTC U1121: Lost Communication with ABS Hydraulic Unit / Control Module
S5JB0A3314055
Wiring Diagram
WHT
RED
WHT
RED
G44-18
G44-19
G44
[A]
[B]
[C]
[G]
1
2
3
4
5
6
7
8
9
10
11
14
15
16
36
34 33 32 31 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 E03-12
E03-10
E03-6
E03-8
WHT
RED
E92-17
E92-7
WHT
RED
E91-22
E91-23
WHT
RED
G31-1
G31-3
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
17 16
26 25
15 14
6
5
3
4
2
13 12
23 22
24
11 10 9
21 20 19
8 7
18
1
E93
2 1
E23
C37
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
2
26
27
28
15
30
56
48
32 31
34
35
36
37
40
42
3938
44
45
43
41
33
1
12
13
23
8
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
[E]
G31
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
[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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
[F]
E91
WHT
RED
G31-2
G31-4
[H]
8
7
6
5
4
3
2
1
9
10
11
12
13
14
15
16
1
2
3
4
8
5
6
7
I5JB0A332021-01
[A]: Keyless start control module connector (if equipped) (viewed from harness side)
1. BCM
[B]: ECM connector (viewed from harness side)
2. 4WD control module
[C]: TCM connector (for A/T model) (viewed from harness side)
3. TCM (for A/T model)
[D]: ABS hydraulic unit/control module connector (viewed from terminal side)
4. Keyless start control module (if equipped)
[E]: Combination meter connector (viewed from harness side)
5. ECM
[F]: 4WD control module connector (viewed from harness side)
6. ABS hydraulic unit / control module
[G]: BCM connector (viewed from harness side)
7. Combination meter
[H]: DLC (viewed from harness side)
8. DLC
3C-52 Transfer: Motor-Shift Type (Transfer with Shift Actuator)
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Start engine and run it for 1 min. or more.
3) Stop vehicle and check DTC.
Troubleshooting
DTC detecting condition
Trouble area
Reception error of communication data for ABS hydraulic unit /
control module is detected for longer than specified time
continuously.
• CAN communication circuit
• ABS hydraulic unit / control module
• 4WD control module
Step
Action
Yes
No
1
Was “4WD control system check” performed?
Go to Step 2.
Go to “4WD Control
System Check: Motor-
Shift Type (Transfer with
Shift Actuator)”.
2
DTC check
1) Check DTC in 4WD control module.
Is DTC U1100 and DTC U1073 detected together?
Go to Step 3.
3
DTC check
1) Check DTC in ABS hydraulic unit / control module.
Is DTC PU1073 detected?
Go to “DTC U1073:
Control Module
Communication Bus Off
in Section 4E”.
Go to Step 4.
4
Check each control module connectors
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck in 4WD control module.
Is DTC U1100 detected?
Go to Step 5.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
5
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 ABS hydraulic
unit / control module
power and ground
circuit. If circuit is OK,
substitute a known-
good ABS hydraulic unit
/ control module and
recheck.
Repair circuit.
Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-53
Inspection of 4WD Control Module and Its Circuits
S5JB0A3314037
4WD control module and its circuits can be checked at coupler connected to 4WD control module by measuring
voltage, pulse signal.
CAUTION
!
4WD control module cannot be checked by itself. It is strictly prohibited to connect voltmeter or
ohmmeter to 4WD control module with couplers disconnected from it.
Voltage and Signal Check
1) Check voltage using voltmeter (1) connected to each terminal of couplers.
2) Check signal using oscilloscope (2) connected to each terminal of couplers.
NOTE
• As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when
ignition switch is turned ON.
• Pulse signal cannot be measured by voltmeter. It can be measured by oscilloscope.
• Item with asterisk (*) in normal voltage column can be read only by oscilloscope.
Terminal arrangement of 4WD control module connector (Viewed from harness side)
1
2
I4JA01332053-01
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2
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4
5
6
7
8
9
10
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13
14
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I4JA01332054-01
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