Suzuki GRAND VITARA JB416 Service Manual page 156

3C-39 Transfer: Motor-Shift Type (Transfer with Shift Actuator)
Troubleshooting
Step
1 Was "4WD control system check" performed?
2 Transfer shift actuator circuit check
1) Disconnect transfer shift actuator connector "C54" with
ignition switch OFF.
2) Check for proper connection to "C54-1" and "C54-4"
terminals of transfer shift actuator connector.
3) If connection is OK, measure voltage between "C54-1"
or "C54-4" terminal of transfer shift actuator connector
and vehicle body ground.
Is it 10 – 14 V?
3 Transfer shift actuator check
1) Check transfer shift actuator referring to "Transfer
Assembly Inspection: Motor-Shift Type (Transfer with
Shift Actuator)".
Is actuator in good condition?
4 Wire harness check
1) Disconnect connector from 4WD control module
connector "E91" with ignition switch OFF.
2) Check for open and high resistance or shorted to ground
in related circuits.
• Between "C54-1" terminal of transfer shift actuator
connector and "E91-22" terminal of 4WD control
module connector
• Between "C54-4" terminal of transfer shift actuator
connector and "E91-3" terminal of 4WD control
module connector
Are they in good condition?
Action 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 shift
actuator.
Repair circuit.