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Rear differential overheats |
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Fluid level too low |
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Incorrect fluid type | |
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Rear differential leaks fluid |
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Fluid level too high |
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Clogged breather hose |
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Worn or damaged oil seal |
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Damaged sealing washer |
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Loose mounting bolts or inadequate sealing | |
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HDS does not communicate with vehicle |
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HDS does not communicate with AWD control unit |
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AWD system indicator does not come on |
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AWD system indicator does not go off, and no DTCs are stored |
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Will not go into 4WD mode, Poor traction, Poor acceleration (at start), Poor climbing ability |
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Real time AWD system is stuck in 4WD mode |
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Abnormal noise (at normal condition) |
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Gear noise |
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? |
Poor gear mesh between ring gear and drive pinion |
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Hypoid gear (wear or damage) |
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? |
Poor pre-road (drive pinion) |
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? |
Debris in hypoid gear area |
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? |
Fluid level too low |
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? |
Distortion of the differential carrier case | |
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Bearing noise |
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? |
Bearing (wear or damage) |
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? |
Drive pinion taper bearing (wear) |
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? |
Debris in bearing | |
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Pump noise (at lubrication) |
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? |
Debris in pump |
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? |
Rotor (wear or damage) | |
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Loose or missed torqued parts | |
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Abnormal noise (at start) |
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Gear noise |
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? |
Poor gear mesh between ring gear and drive pinion |
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? |
Hypoid gear (wear or damage) |
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? |
Poor pre-road (drive pinion) |
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? |
Debris in hypoid gear area |
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? |
Fluid level too low |
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? |
Distortion of the differential carrier case |
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? |
Excessive backlash (hypoid gear) |
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? |
Excessive backlash (differential gear) |
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? |
Differential side gear spline (wear) | |
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Bearing noise |
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? |
Bearing (wear or damage) |
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? |
Drive pinion taper bearing (wear) |
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? |
Debris in bearing | |
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Pump noise (at lubrication) |
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? |
Debris in pump |
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? |
Rotor (wear or damage) | |
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Rear differential pump motor noise |
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? |
Bearing (wear or damage) |
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? |
Debris in rear differential pump motor | |
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Pump noise (at control) |
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? |
Debris in pump |
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? |
Rotor (wear or damage) | |
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Rear differential solenoid valve noise |
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? |
Debris in rear differential solenoid valve |
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? |
Plunger area or shaft area (wear) |
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? |
Rear differential solenoid valve (wear or damage) | |
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Clutch chatter |
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? |
Fluid deterioration |
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? |
Clutch facing (burnt or deterioration) |
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? |
Clutch plate (deterioration) | |
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Loose or missed torqued parts | |
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Abnormal noise (at accelerate) |
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|
Gear noise |
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|
? |
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 |
|
? |
Excessive backlash (hypoid gear) |
|
? |
Excessive backlash (differential gear) |
|
? |
Differential side gear spline (wear) | |
|
|
Bearing noise |
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|
? |
Bearing (wear or damage) |
|
? |
Drive pinion taper bearing (wear) |
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? |
Debris in bearing | |
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|
Pump noise (at lubrication) |
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|
? |
Debris in pump |
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? |
Rotor (wear or damage) | |
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Rear differential pump motor noise |
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? |
Bearing (wear or damage) |
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? |
Debris in rear differential pump motor | |
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Pump noise (at control) |
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|
? |
Debris in pump |
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? |
Rotor (wear or damage) | |
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Rear differential solenoid valve noise |
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? |
Debris in rear differential solenoid valve |
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? |
Plunger area or shaft area (wear) |
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? |
Rear differential solenoid valve (wear or damage) | |
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|
Clutch chatter |
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? |
Fluid deterioration |
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? |
Clutch facing (burnt or deterioration) |
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? |
Clutch plate (deterioration) | |
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|
Loose or missed torqued parts | |
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|
Abnormal noise (at turning) |
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|
Gear noise |
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|
? |
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 | |
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|
Differential gear noise |
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|
? |
Side gear and pinion gear (wear or damage) |
|
? |
Pinion shaft (damage) |
|
? |
Debris in differential gear area | |
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|
Clutch chatter |
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|
? |
Fluid deterioration |
|
? |
Clutch facing (burnt or deterioration) |
|
? |
Clutch plate (deterioration) | |
|
|
Loose or missed torqued parts | |
|
|
Abnormal noise (at turning and accelerate) |
|
|
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 |
|
? |
Excessive backlash (hypoid gear) |
|
? |
Excessive backlash (differential gear) |
|
? |
Differential side gear spline (wear) | |
|
|
Bearing noise |
|
|
? |
Bearing (wear or damage) |
|
? |
Drive pinion taper bearing (wear) |
|
? |
Debris in bearing | |
|
|
Differential gear noise |
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|
? |
Side gear and pinion gear (wear or damage) |
|
? |
Pinion shaft (damage) |
|
? |
Debris in differential gear area | |
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|
Pump noise (at lubrication) |
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|
? |
Debris in pump |
|
? |
Rotor (wear or damage) | |
|
|
Rear differential pump motor noise |
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|
? |
Bearing (wear or damage) |
|
? |
Debris in rear differential pump motor | |
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|
Pump noise (at control) |
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|
? |
Debris in pump |
|
? |
Rotor (wear or damage) | |
|
|
Rear differential solenoid valve noise |
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|
? |
Debris in rear differential solenoid valve |
|
? |
Plunger area or shaft area (wear) |
|
? |
Rear differential solenoid valve (wear or damage) | |
|
|
Clutch chatter |
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|
? |
Fluid deterioration |
|
? |
Clutch facing (burnt or deterioration) |
|
? |
Clutch plate (deterioration) | |
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Loose or missed torqued parts | |
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