Suzuki GRAND VITARA JB416 Service Manual page 147

DTC Detecting Condition and Trouble Area
DTC detecting condition
Transfer switch combination different from specification is
detected for more than 0.5 seconds.
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
Step
1 Was "4WD control system check" performed?
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?
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?
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 "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?
Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-30
Action
Trouble area
• Transfer switch
• Transfer switch circuit
• 4WD control module
Yes
Go to Step 2.
Go to Step 3.
Substitute a known-
good 4WD control
module and recheck.
Substitute a known-
good 4WD control
module and recheck.
No
Go to "4WD Control
System Check: Motor-
Shift Type (Transfer with
Shift Actuator)".
Go to Step 4.
Replace transfer switch.
Repair circuit.