Rear Differential Symptom Diagnosis; 4Wd Control Symptom Diagnosis - Suzuki SX4 Service Manual
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Also See for SX4:
- Owner's manual (47 pages) ,
- Owner's manual (278 pages) ,
- Owner's manual (16 pages)
Table of Contents
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3B-15 Differential:
Rear Differential Symptom Diagnosis
Condition
Gear noise
Bearing noise
Oil leakage
4WD Control Symptom Diagnosis
Diagnose 4WD system after performing the following inspections.
• Perform 4WD control system check referring to "4WD Control System Check".
Condition
4WD system does not
operate
Noise
Possible cause
Deteriorated or water mixed lubricant
Inadequate or insufficient lubricant
Maladjusted backlash between drive
bevel pinion and gear
Improper tooth contact in the mesh
between drive bevel pinion and gear
Loose drive bevel gear securing bolts
Damaged differential gear(s) or
differential pinion(s)
(Constant noise) Deteriorated or water
mixed lubricant
(Constant noise) Inadequate or
insufficient lubricant
(Noise while coasting) Damaged
bearing(s) of drive bevel pinion
(Noise while turning) Damaged
differential side bearing(s) or axle
bearing(s)
Clogged breather plug
Worn or damaged oil seal
Excessive oil
Loose differential carrier bolts
Possible cause
2WD/4WD switch faulty
Coupling air temperature sensor faulty
Coupling assembly faulty
Wiring or grounding faulty
4WD control module faulty
MAF sensor faulty
Accelerator pedal position (APP) sensor
faulty
CKP sensor faulty
Front and/or rear wheel speed sensor
faulty
Steering angle sensor faulty
ABS / ESP® control module faulty
ECM faulty
Damaged or worn bearing(s)
Correction / Reference Item
Repair and replenish referring to "Rear
Differential Oil Change".
Repair and replenish referring to "Rear
Differential Oil Change".
Adjust as prescribed referring to "Rear
Differential Disassembly and Reassembly".
Adjust or replace referring to "Rear Differential
Disassembly and Reassembly".
Replace or retighten referring to "Rear
Differential Disassembly and Reassembly".
Replace referring to "Rear Differential
Inspection".
Repair and replenish referring to "Rear
Differential Oil Change".
Repair and replenish referring to "Rear
Differential Oil Change".
Replace referring to "Rear Differential
Inspection".
Replace referring to "Rear Differential
Inspection".
Clean.
Replace.
Adjust oil level referring to "Rear Differential Oil
Change".
Replace or retighten.
Correction / Reference Item
Check switch referring to "2WD/4WD Switch
Inspection".
Check coupling air temperature sensor
referring to "Coupling Air Temperature Sensor
Inspection".
Check coupling assembly referring to
"Coupling Assembly Inspection".
Repair as necessary.
Check 4WD control module referring to
"Inspection of 4WD Control Module and Its
Circuits".
Check MAF sensor and its circuit.
Check accelerator pedal position (APP) sensor
and its circuit.
Check CKP sensor and its circuit.
Check front and/or rear wheel speed sensor
and its circuit.
Check steering angle sensor and its circuit.
®
Check ABS / ESP
control module and its
circuit.
Check ECM and its circuit.
Refer to "Rear Differential Inspection".
S7RW0A3204010
S7RW0A3204011
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Troubleshooting
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Do you have a question about the SX4 and is the answer not in the manual?
Questions and answers
Adjust throttle motor
The idle speed on a Suzuki SX4 should be controlled by the Idle Air Control Valve (IACV) rather than adjusting the idle screw on the throttle body, as the screw is factory set. Before using compressed air in the idle-air-bypass passages, the IACV should be removed to prevent damage to its delicate mechanism. If there is an issue with idle speed, checking the IACV function and referring to the SX4 service manual is recommended.
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I have an issue of crank but not starting When I scan it brought this codeU0100 Which means no communication thou crank sensor wire was cut off but it was fix back What could be wrong and what could be the solution,
My heater stopped working the blower **** is good, control unit ?
Possible issues with the heater in a Suzuki SX4 if the blower is working but the heater is not include:
1. Incorrect Temperature Output
- Temperature control cable broken or bent (non-A/C and manual A/C) → Check the temperature control cable.
- Temperature selector faulty (non-A/C and manual A/C) → Check the temperature selector.
- Incorrect installation of the temperature control cable (non-A/C and manual A/C) → Check and adjust the position as necessary.
- Temperature control door assembly broken → Repair the temperature control door assembly.
- Air ducts clogged → Repair air ducts.
- Heater core leaked or clogged → Replace the heater core.
- Heater hoses leaked or clogged → Replace heater hoses.
- Thermostat faulty → Check the thermostat.
- Temperature control actuator faulty (auto A/C) → Check the temperature control actuator.
- HVAC control module faulty (auto A/C) → Check the HVAC control module.
- Wiring or grounding faulty (auto A/C) → Repair as necessary.
2. Other Possible Causes
- Air flow control cable broken or bent → Check the air flow control cable.
Checking and addressing these components should help identify and resolve the heater issue.
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دلایل بالا رفتن مصرف بنزین در مدل اتومات
increasing revs when changing gears
The Suzuki SX4 may have increasing revs when changing gears due to its drive-by-wire system and the difference in final drive ratios between the manual (4.41) and automatic (2.81) transmissions. This difference causes high cruising RPMs in the manual version and sluggishness in the automatic. Additionally, if the revs climb while going uphill, it may be due to the transmission downshifting or kicking out of overdrive. Other possible causes include low transmission fluid, abuse, or a faulty transmission design.
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