Rear Differential15-1 Symptom Troubleshooting Index15-12

Symptom Troubleshooting Index15-12

Most problems in the unit are to be diagnosed by identifying noises from the gears or bearings.

Care should be taken during diagnosis not to confuse differential noises with those from other drivetrain components.

Symptom	Probable Cause	Remedy
Will not go into 4WD mode	Fluid level too low Incorrect fluid type	Add fluid Replace
Will not return to 2WD mode	Incorrect fluid type	Drain and fill the differential
Gear or bearing noises	Fluid level too low Incorrect or worn out fluid Damaged or chipped gears	Add fluid Drain and fill the differential Replace the differential carrier assembly
Overheating	Fluid level too low Incorrect fluid type	Add fluid Drain and fill the differential
Fluid leak	Fluid level too high Clogged breather hose Worn or damaged oil seal Damaged sealing washer Loose mounting bolts or inadequate sealing	Lower to proper level Clean or replace Replace Replace Recheck torque or apply sealant

Rear Differential15-1 Symptom Troubleshooting Index15-12