Suzuki GRAND VITARA 2005 Service Manual page 318

3C-7 Transfer:
4WD Control Symptom Diagnosis
Diagnose transfer assembly after performing the following inspections.
1) Perform 4WD control system check referring to "4WD Control System Check: in related manual".
2) Confirm 4WD control system operation referring to "4WD Control System Operation: in related manual"
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)
Gear slipping out of mesh Worn control cover shift shaft
Noise
Possible cause
Transfer switch faulty
Transfer shift actuator faulty
4L/N switch and/or switch center
differential lock switch faulty
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
Worn shift fork or sleeve
Weak or damaged control cover shift
shaft spring
Worn bearings on input gear or counter
gear
Worn chamfered tooth on sleeve or gear Check sleeve and gear referring to "Transfer
Missing or disengagement of circlip(s)
Damaged or worn bearing(s)
Damaged or worn gear(s)
Damaged or worn chamfered tooth on
sleeve or gear
Correction / Reference Item
Check switch referring to "Transfer Switch
Inspection: in related manual".
Check transfer shift actuator referring to
"Transfer Assembly Inspection: in related
manual".
Check switch referring to "Transfer Assembly
Inspection: in related manual".
Check CPP switch referring to "Clutch Pedal
Position (CPP) Switch Inspection and
Adjustment: in Section 5C in related manual".
Repair as necessary.
Check 4WD control module referring to
"Inspection of 4WD Control Module and Its
Circuits: in related manual".
Check transfer shift actuator referring to
"Transfer Assembly Inspection: in related
manual".
Check switch referring to "Transfer Assembly
Inspection: in related manual".
Check shift fork referring to "Transfer Assembly
Inspection: in related manual".
Check spring referring to "Transfer Assembly
Inspection: in related manual".
Check snap ring and washer referring to
"Transfer Assembly Inspection: in related
manual".
"Transfer Assembly Inspection: in related
manual".
Repair as necessary.
Check 4WD control module referring to
"Inspection of 4WD Control Module and Its
Circuits: in related manual".
Check control cover shift shaft referring to
"Transfer Assembly Inspection: in related
manual".
Check shift fork or sleeve referring to "Transfer
Assembly Inspection: in related manual".
Check spring referring to "Transfer Assembly
Inspection: in related manual".
Check bearing referring to "Transfer Assembly
Inspection: in related manual".
Assembly Inspection: in related manual".
Check circlip(s) referring to "Transfer Assembly
Inspection: in related manual".
Refer to "Transfer Assembly Inspection: in
related manual".
Refer to "Transfer Assembly Inspection: in
related manual".
Refer to "Transfer Assembly Inspection: in
related manual".
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