Suzuki Grand Vitara JB416 / JB420. Manual — part 178

3C-26 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

Troubleshooting

Step

Action

Yes

No

1

Transfer position indicator power supply check
1) Turn ignition switch to ON position.

Do other indicators come ON?

Go to Step 2.

Go to Step 3.

2

Check DTC
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ignition switch to ON position and check DTC.

Is there DTC(s) U1073, U1100, U1101 and/or U1121?

Go to applicable DTC
diag. flow.

Substitute a known-
good combination meter
and recheck. If transfer
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.

3

CAN communication circuit check
1) Check CAN communication circuit between combination

meter and 4WD control module referring to “DTC U1073:
Control Module Communication Buss Off: Motor-Shift
Type (Transfer with Shift Actuator)”.

Is CAN communication circuit in good condition?

Go to Step 4.

Repair or replace.

4

“METER” fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown to “METER” fuse in junction block

assembly.

Is “METER” fuse in good condition?

Go to Step 5.

Replace “METER” fuse
and check for short.

5

Combination meter power supply check
1) Remove combination meter referring to “Combination

Meter Removal and Installation in Section 9C”.

2) Check proper connection to combination meter

connector at “G28-13” and “G28-15” terminals.

3) If OK, then turn ignition switch to ON position and

measure voltage between combination meter connector
at “G28-13” terminal and vehicle body ground.

Is it 10 – 14 V?

Go to Step 6.

“PPL/RED” wire is open
circuit.

6

Combination meter ground circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between combination meter

connector at “G28-15” terminal and vehicle body ground.

Is resistance 1

Ω

or less?

Substitute a known-
good combination meter
and recheck. If transfer
position indicator still
remains OFF, substitute
a known-good 4WD
control module and
recheck.

“BLK” wire is open or
high resistance circuit.

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-27

Transfer Position Indicator Remains ON Steady at Ignition Switch ON

S5JB0A3314040

Wiring Diagram

Circuit Description
Transfer position indicator operates according to the signal from 4WD control module. If the transfer control system is
in good condition, transfer position indicator light up for 2 seconds when ignition switch is turned to ON position, and
then turned to OFF position. If an abnormality is detected in the system, transfer position indicator remains lighting.

Troubleshooting

E91-22
E91-23

RED

WHT

RED

WHT

G28-10

G28-8

1

2

G28-13

PPL/RED

BLK

WHT/GRN

BLK/YEL

8

G28-15

4

6

7

5

3

1

2

3

4

5

6

7

8

9

10

11

17

1615141312

2221201918

[B]

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

[A]

I5JB0A332015-03

[A]: 4WD control module connector “E91” (viewed from harness side)

4. 4L indicator

[B]: Combination meter connector (viewed from harness side)

5. N indicator

1. 4WD control module

6. Junction block assembly

2. Combination meter

7. “METER” fuse

3. Differential lock indicator

8. Ignition switch

Step

Action

Yes

No

1

Check DTC
1) Check DTC referring to “DTC Check: Motor-Shift Type

(Transfer with Shift Actuator)”.

Is there any DTC(s)?

Perform DTC flow to
repair and retry.

Go to Step 2.

2

CAN communication circuit check
1) Check CAN communication circuit between combination

meter and 4WD control module referring to “DTC U1073:
Control Module Communication Buss Off: Motor-Shift
Type (Transfer with Shift Actuator)”.

Is CAN communication circuit in good condition?

Substitute a known-
good combination meter
and recheck. If transfer
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.

Repair or replace.

3C-28 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

DTC C1213: Transfer Switch Circuit Open

S5JB0A3314041

Wiring Diagram

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Clear DTC using scan tool.
2) Select transfer switch to “4H” position and keep its position for 10 seconds. Similarly select transfer switch to “4H-

lock”, “N” and “4L-lock” position.

3) Check DTC.

Troubleshooting

E91-18

E91-19

E91-20

BLU/ORN

BLU/BLK

LT GRN

1

2

12V

G59-4

G59-3

G59-2

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

[A]

1

2

3

4

5

6

[B]

I5JB0A332016-01

[A]: 4WD control module connector “E91” (viewed from harness side)

1. 4WD control module

[B]: Transfer switch connector “G59” (viewed from harness side)

2. Transfer switch

DTC detecting condition

Trouble area

Transfer switch combination different from specification is
detected for more than 0.5 seconds.

• Transfer switch
• Transfer switch circuit
• 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

Transfer switch circuit check
1) Disconnect transfer switch connector “G59” with ignition

switch OFF.

2) Check for proper connection to “G59-2”, “G59-3” and

“G59-4” terminals of transfer switch connector.

3) If connection is OK, measure voltage between “G59-2”,

“G59-3” or “G59-4” terminal of transfer switch connector
and vehicle body ground with ignition switch ON.

Is it 10 – 14 V?

Go to Step 3.

Go to Step 4.

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-29

DTC C1214: Transfer Switch Circuit Short

S5JB0A3314042

Wiring Diagram

DTC Detecting Condition and Trouble Area

3

Transfer switch check
1) Check transfer switch referring to “Transfer Switch

Inspection: Motor-Shift Type (Transfer with Shift
Actuator)”.

Is switch in good condition?

Substitute a known-
good 4WD control
module and recheck.

Replace transfer switch.

4

Wire harness check
1) Disconnect connector from 4WD control module

connector “E91” with ignition switch OFF.

2) Check for open and high resistance in related circuits.

• Between “G59-2” terminal of transfer switch connector

and “E91-18” terminal of 4WD control module
connector

• Between “G59-3” terminal of transfer switch connector

and “E91-19” terminal of 4WD control module
connector

• Between “G59-4” terminal of transfer switch connector

and “E91-20” terminal of 4WD control module
connector

Are they in good condition?

Substitute a known-
good 4WD control
module and recheck.

Repair circuit.

Step

Action

Yes

No

E91-18

E91-19

E91-20

BLU/ORN

BLU/BLK

LT GRN

1

2

12V

G59-4

G59-3

G59-2

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

[A]

1

2

3

4

5

6

[B]

I5JB0A332016-01

[A]: 4WD control module connector “E91” (viewed from harness side)

1. 4WD control module

[B]: Transfer switch connector “G59” (viewed from harness side)

2. Transfer switch

DTC detecting condition

Trouble area

Transfer switch combination different from specification is
detected for more than 0.5 seconds.

• Transfer switch
• Transfer switch circuit
• 4WD control module