Abnormal noise (at normal condition) (AWD)

Probable Cause 

• Gear noise
• • Poor gear mesh between ring gear and drive pinion
  • Hypoid gear (wear or damage)
  • Poor pre-road (drive pinion)
  • Debris in hypoid gear area
  • Fluid level too low
  • Distortion of the differential carrier case

• Bearing noise
• • Bearing (wear or damage)
  • Drive pinion taper bearing (wear)
  • Debris in bearing

• Pump noise (at lubrication)
• • Debris in pump
  • Rotor (wear or damage)

• Loose or missed torqued parts

Remedy 

Do the symptom troubleshooting for abnormal noise - Refer to: Real Time AWD System Symptom Troubleshooting - Will not go into 4WD mode, Poor traction, Poor acceleration (at start), Poor climbing ability (AWD) Real Time AWD System Symptom Troubleshooting - HDS does not communicate (AWD) Real Time AWD System Symptom Troubleshooting - AWD system indicator does not go off, and no DTCs are stored (AWD) Real Time AWD System Symptom Troubleshooting - Real time AWD system is stuck in 4WD mode (AWD) Real Time AWD System Symptom Troubleshooting - Abnormal noise (AWD) Real Time AWD System Symptom Troubleshooting - AWD system indicator does not come on (AWD)