Suzuki 2006 SX4, Service Manual

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3B-14 Differential:
Rear Differential Symptom Diagnosis
S6RW0C3204010
4WD Control Symptom Diagnosis
S6RW0C3204011
Diagnose 4WD system after performing the following inspections.
• Perform 4WD control system check referring to “4WD Control System Check”.
Condition Possible cause Correction / Reference Item
Gear noise Deteriorated or water mixed lubricant Repair and replenish referring to “Rear
Differential Oil Change”.
Inadequate or insufficient lubricant Repair and replenish referring to “Rear
Differential Oil Change”.
Maladjusted backlash between drive
bevel pinion and gear Adjust as prescribed referring to “Rear
Differential Disassembly and Reassembly”.
Improper tooth contact in the mesh
between drive bevel pinion and gear Adjust or replace referring to “Rear Differential
Disassembly and Reassembly”.
Loose drive bevel gear securing bolts Replace or retighten referring to “Rear
Differential Disassembly and Reassembly”.
Damaged differential gear(s) or
differential pinion(s) Replace referring to “Rear Differential
Inspection”.
Bearing noise (Constant noise) Deteriorated or water
mixed lubricant Repair and replenish referring to “Rear
Differential Oil Change”.
(Constant noise) Inadequate or
insufficient lubricant Repair and replenish referring to “Rear
Differential Oil Change”.
(Noise while coasting) Damaged
bearing(s) of drive bevel pinion Replace referring to “Rear Differential
Inspection”.
(Noise while turning) Damaged
differential side bearing(s) or axle
bearing(s) Replace referring to “Rear Differential
Inspection”.
Oil leakage Clogged breather plug Clean.
Worn or damaged oil seal Replace.
Excessive oil Adjust oil level referring to “Rear Differential Oil
Change”.
Loose differential carrier bolts Replace or retighten.
Condition Possible cause Correction / Reference Item
4WD system does not
operate 2WD/4WD switch faulty Check switch referring to “2WD/4WD Switch
Inspection”.
Coupling air temperature sensor faulty Check coupling air temperature sensor
referring to “Coupling Air Temperature Sensor
Inspection”.
Coupling assembly faulty Check coupling assembly referring to
“Coupling Assembly Inspection”.
Wiring or grounding faulty Repair as necessary.
4WD control module faulty Check 4WD control module referring to
“Inspection of 4WD Control Module and Its
Circuits”.
MAF sensor faulty Check MAF sensor and its circuit.
Accelerator pedal position (APP) sensor
faulty Check accelerator pedal position (APP) sensor
and its circuit.
CKP sensor faulty Check CKP sensor and its circuit.
Front and/or rear wheel speed sensor
faulty Check front and/or rear wheel speed sensor
and its circuit.
Steering angle sensor faulty Check steering angle sensor and its circuit.
ABS / ESP
®
control module faulty Check ABS / ESP
®
control module and its
circuit.
ECM faulty Check ECM and its circuit.
Noise Damaged or worn bearing(s) Refer to “Rear Differential Inspection”.