Suzuki Grand Vitara JB416 / JB420. Service 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.
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