Suzuki Grand Vitara JB416 / JB420 (ESP model). Service manual — part 34

3C-31 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

DTC C1223 / C1235: Transfer Shift Actuator Motor Position Switch 1 Circuit Open / Transfer Shift
Actuator Motor Position Switch 2 Circuit Open

S5JB0E3314016

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.

5V

12V

E91-2

5V

YEL

RED/BLK

BLU

M

E91-3

E91-25

E91-26

RED

E91-24

BLK/YEL

1

2

3

C54-1

C54-4

C54-2

C54-3

C54-5

4

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]

I5JB0A332017-01

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

2. Transfer shift actuator motor position switch

[B]: Transfer shift actuator connector “C54” (engine harness side) (viewed from harness side)

3. Transfer shift actuator motor

1. Transfer shift actuator

4. 4WD control module

DTC detecting condition

Trouble area

Transfer shift actuator motor position switch signal voltage 4.2 V
or more.

• Transfer shift actuator motor position switch
• Transfer shift actuator motor position switch

circuit

• 4WD control module

Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-32

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 open and high resistance 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 it in good condition?

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

Repair circuit.

3C-33 Transfer: Motor-Shift Type (Transfer with Shift Actuator)

DTC C1224 / C1236: Transfer Shift Actuator Motor Position Switch 1 Circuit Short / Transfer Shift
Actuator Motor Position Switch 2 Circuit Short

S5JB0E3314017

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.

5V

12V

E91-2

5V

YEL

RED/BLK

BLU

M

E91-3

E91-25

E91-26

RED

E91-24

BLK/YEL

1

2

3

C54-1

C54-4

C54-2

C54-3

C54-5

4

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]

I5JB0A332017-01

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

2. Transfer shift actuator motor position switch

[B]: Transfer shift actuator connector “C54” (engine harness side) (viewed from harness side)

3. Transfer shift actuator motor

1. Transfer shift actuator

4. 4WD control module

DTC detecting condition

Trouble area

Transfer shift actuator motor position switch signal voltage 0.6 V
or less.

• Transfer shift actuator motor position switch
• Transfer shift actuator motor position switch

circuit

• 4WD control module

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

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.