Suzuki Grand Vitara JB416 / JB420. Manual - part 180

3C-34 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

Troubleshooting

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 shift actuator motor position switch circuit 
check
1) Disconnect transfer shift actuator connector “C54” with 

ignition switch OFF.

2) Check for proper connection to “C54-2”, “C54-3” and 

“C54-5” terminals of transfer shift actuator connector.

3) If connection is OK, measure voltage between “G54-2”, 

“G54-3” or “G54-5” terminal of transfer switch connector 
and vehicle body ground with ignition switch ON.

Is it approx. 5 V?

Go to Step 3.

Go to Step 4.

3

Transfer shift actuator position switch check
1) Check transfer shift actuator position switch referring to 

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

Is actuator in good condition?

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

Faulty actuator position 
switch. Replace transfer 
shift actuator.

4

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

connector “E91” with ignition switch OFF.

2) Check for shorted to ground in related circuits.

• Between “C54-2” terminal of transfer shift actuator 

connector and “E91-25” terminal of 4WD control 
module connector

• Between “C54-3” terminal of transfer shift actuator 

connector and “E91-26” terminal of 4WD control 
module connector

• Between “C54-5” terminal of transfer shift actuator 

connector and “E91-24” terminal of 4WD control 
module connector

Are they in good condition?

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

Repair circuit.

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-35

DTC C1227: 4L/N Switch Circuit Open

S5JB0A3314045

Wiring Diagram

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Clear DTC using scan tool.
2) Select transfer switch to “4L-lock” position and keep its position for 1 min.
3) Check DTC.

Troubleshooting

IG

E91-13

E91-14

RED/GRN

PNK/WHT

2

3

4

12V

1

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]

I5JB0A332018-01

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

3. 4L/N switch

1. 4WD control module

4. Center differential lock switch

2. TCM

DTC detecting condition

Trouble area

Though transfer shift actuator motor position switch is “4L-lock” 
position, the ON signal is not input from the 4L/N switch.

• 4L/N switch
• 4L/N 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

4L/N switch circuit check
1) Disconnect 4L/N switch connector with ignition switch 

OFF.

2) Check for proper connection to terminal of 4L/N switch 

connector.

3) If connection is OK, measure voltage between “PNK/

WHT” terminal of 4L/N switch connector and vehicle 
body ground with ignition switch ON.

Is it 10 – 14 V?

Go to Step 3.

Go to Step 4.

3C-36 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

DTC C1228: 4L/N Switch Circuit Short

S5JB0A3314046

Wiring Diagram

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Clear DTC using scan tool.
2) Select transfer switch to “4L-lock” position and keep its position for 1 min.
3) Check DTC.

3

4L/N switch check
1) Check 4L/N switch referring to “Transfer Assembly 

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

Is switch in good condition?

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

Replace 4L/N switch.

4

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

connector “E91” with ignition switch OFF.

2) Check for proper connection to “E91-13” terminal of 

4WD control module connector.

3) If OK, measure resistance between “PNK/WHT” terminal 

of 4L/N switch connector and “E91-13” terminal of 4WD 
control module connector.

Is it 1 

Ω

 or less?

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

“PNK/WHT” wire is 
open or high resistance.

Step

Action

Yes

No

IG

E91-13

E91-14

RED/GRN

PNK/WHT

2

3

4

12V

1

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]

I5JB0A332018-01

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

3. 4L/N switch

1. 4WD control module

4. Center differential lock switch

2. TCM

DTC detecting condition

Trouble area

Though transfer shift actuator motor position switch is “4L-lock” 
position, the OFF signal is not input from the 4L/N switch.

• 4L/N switch
• 4L/N switch circuit
• 4WD control module

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-37

Troubleshooting

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

4L/N switch circuit check
1) Disconnect 4L/N switch connector with ignition switch 

OFF.

2) Check for proper connection to terminal of 4L/N switch 

connector.

3) If connection is OK, measure voltage between “PNK/

WHT” terminal of 4L/N switch connector and vehicle 
body ground with ignition switch ON.

Is it 10 – 14 V?

Go to Step 3.

Go to Step 4.

3

4L/N switch check
1) Check 4L/N switch referring to “Transfer Assembly 

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

Is switch in good condition?

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

Replace 4L/N switch.

4

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

connector “E91” with ignition switch OFF.

2) Check for proper connection to “E91-13” terminal of 

4WD control module connector.

3) If OK, measure resistance between “PNK/WHT” terminal 

of 4L/N switch connector and “E91-13” terminal of 4WD 
control module connector.

Is it 1 M

Ω

 or more?

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

“PNK/WHT” wire is 
shorted to ground 
circuit.