Function Of 4Wd Control System Component; 4Wd Control System Operation - Suzuki GRAND VITARA Owner's Manual

Function of 4WD Control System Component

Part Name
4L/N switch
Center differential lock switch
Transfer switch
N indicator
4L indicator
Differential lock indicator
Transmission range sensor (N position) (for A/T
model)
CPP switch
Buzzer incorporated into BCM
4WD control module
Transfer shift actuator
Diagnosis connector

4WD Control System Operation

Instead of the transfer shift lever assembly, the transfer position (4H, 4H-lock, N and 4L-lock) is shifted automatically
by operating the transfer switch.
The 4WD control module operates the transfer shift actuator according to the transfer switch operation.
4H (4WD High) Position
The driving force from the transmission is transmitted to the transfer input gear. As the center LSD case and transfer
input gear are engaged via the reduction shift sleeve at this time, the driving force transmitted from the transfer input
gear to the rear output shaft rotates them at the same speed.
Also, driving force from the center LSD is transmitted to the front drive shaft through front drive sprocket. Then, the
front drive sprocket rotates the front output shaft via the drive chain.
Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-5
Detects transfer shift position combining center differential lock
switch.
Detects transfer shift position combining 4L/N switch.
Shifts transfer shift position.
Indicates transfer is at N position or not.
Indicates transfer is at 4L-lock position or not.
Indicates transfer is at 4H-lock, 4L-lock or not.
Detects A/T is at N range or not.
Detects clutch pedal is depressed or not.
• Indicates transfer is at "N" position.
• Warns of prohibited shift operation.
• Controls transfer shifting.
• Diagnoses 4WD control system components.
• Output operation signal of indicators and buzzer to BCM.
• Consists of transfer shift actuator motor and transfer shift
actuator motor position switch.
• Shifts transfer shift position operating High / Low shift fork and
differential lock shift fork via cams.
• Detects transfer shift actuator motor position.
Indicates DTC on indicators when grounding its diagnosis
terminal.
Function
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