Suzuki GRAND VITARA JB416, Service Manual

Page: 158 / 474

3C-41 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 Center differential lock switch circuit check
1) Disconnect center differential lock switch connector with
ignition switch OFF.
2) Check for proper connection to terminal of center
differential lock switch connector.
3) If connection is OK, measure voltage between “RED/
GRN” terminal of center differential lock switch
connector and vehicle body ground with ignition switch
ON.
Is it 10 – 14 V?
Go to Step 3. Go to Step 4.
3 Center differential lock switch check
1) Check center differential lock 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 center
differential lock switch.
4 Wire harness check
1) Disconnect connector from 4WD control module
connector “E91” with ignition switch OFF.
2) Check for proper connection to “E91-14” terminal of
4WD control module connector.
3) If OK, measure resistance between “RED/GRN” terminal
of center differential lock switch connector and “E91-14”
terminal of 4WD control module connector.
Is it 1
Ω
or less?
Substitute a known-
good 4WD control
module and recheck. “RED/GRN” wire is
open or high resistance.