4Wd Control Symptom Diagnosis - Suzuki GRAND VITARA Owner's Manual

Mode switch 2 (Transfer switch) (ON / OFF):
ON: Transfer switch to other than 4L-lock position.
OFF: Transfer switch to 4L-lock position.
Mode switch 3 (Transfer switch) (ON / OFF):
ON: Transfer switch to 4H-lock or 4L-lock position.
OFF: Transfer switch to 4H or N position.

4WD Control Symptom Diagnosis

Diagnose transfer assembly after performing the following inspections.
1) Perform 4WD control system check referring to "4WD Control System Check: Motor-Shift Type (Transfer with Shift
Actuator)".
2) Confirm 4WD control system operation referring to "4WD Control System Operation: Motor-Shift Type (Transfer
with Shift Actuator)"
Condition
Transfer does not operate
(Transfer position
indicator does not
operate)
Transfer refuses to
operate (Transfer position
indicator flashes, and
then transfer does not
shift)
Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-23
Possible cause
Transfer switch faulty
Transfer shift actuator faulty
4L/N switch and/or switch center
differential lock switch faulty
Transmission range sensor ("N" range)
faulty (for A/T model)
CPP switch faulty (for M/T model)
Wiring or grounding faulty
4WD control module faulty
Transfer shift actuator faulty
4L/N switch and/or center differential
lock switch faulty
Distorted control cover shift shaft or shift
fork
Weakened control cover shift shaft
spring
Distorted or dispositioned control cover
shift shaft snap ring and washer
Worn chamfered tooth on sleeve or gear Check chamfered tooth and gear referring to
Wiring or grounding faulty
4WD control module faulty
Warning buzzer (OFF / N Pos / Error):
This parameter indicates if buzzer is being
commanded by 4WD control module.
ABS active (ON / OFF):
This parameter indicates ABS status detected by
4WD control module.
Correction / Reference Item
Check switch referring to "Transfer Switch
Inspection: Motor-Shift Type (Transfer with
Shift Actuator)".
Check transfer shift actuator referring to
"Transfer Assembly Inspection: Motor-Shift
Type (Transfer with Shift Actuator)".
Check switch referring to "Transfer Assembly
Inspection: Motor-Shift Type (Transfer with
Shift Actuator)".
Adjust or check transmission range sensor
referring to "Transmission Range Sensor
Inspection and Adjustment: in Section 5A".
Check CPP switch referring to "Clutch Pedal
Position (CPP) Switch Inspection and
Adjustment: in Section 5C".
Repair as necessary.
Check 4WD control module referring to
"Inspection of 4WD Control Module and Its
Circuits: Motor-Shift Type (Transfer with Shift
Actuator)".
Check transfer shift actuator referring to
"Transfer Assembly Inspection: Motor-Shift
Type (Transfer with Shift Actuator)".
Check switch referring to "Transfer Assembly
Inspection: Motor-Shift Type (Transfer with
Shift Actuator)".
Check shift fork referring to "Transfer Assembly
Inspection: Motor-Shift Type (Transfer with
Shift Actuator)".
Check spring referring to "Transfer Assembly
Inspection: Motor-Shift Type (Transfer with
Shift Actuator)".
Check snap ring and washer referring to
"Transfer Assembly Inspection: Motor-Shift
Type (Transfer with Shift Actuator)".
"Transfer Assembly Inspection: Motor-Shift
Type (Transfer with Shift Actuator)".
Repair as necessary.
Check 4WD control module referring to
"Inspection of 4WD Control Module and Its
Circuits: Motor-Shift Type (Transfer with Shift
Actuator)".
S5JB0A3314012