DRIVE SHAFT SYSTEM > General Diagnostic Table
INSPECTION
NOTE:
Vibration while cruising may be caused by an unbalanced tire, improper tire inflation pressure, improper wheel alignment, etc.
Symptoms | Possible cause | Corrective action |
Noise or vibration from propeller shaft |
• Center bearing
• Runout of propeller shaft
• Loose or gap at connections
Inspect the propeller shaft. Propeller Shaft > INSPECTION">
Abnormal wheel vibration
Wheel is out of balance.
Check the wheel balance. Tire and Wheel > INSPECTION">
Front wheel alignment
Check the front wheel alignment. Wheel Alignment > INSPECTION">
Rear wheel alignment
Check the rear wheel alignment. Wheel Alignment > INSPECTION">
Front strut
Check the front strut. Front Strut > INSPECTION">
Rear shock absorber
Check the rear shock absorber. Rear Shock Absorber > INSPECTION">
Front drive shaft
Check the front drive shaft. Front Drive Shaft > INSPECTION">
Rear drive shaft
Check the rear drive shaft. Rear Drive Shaft > INSPECTION">
Front hub unit bearing
Check the front hub unit bearing. Front Hub Unit Bearing > INSPECTION">
Rear hub unit bearing
Check the rear hub unit bearing. Rear Hub Unit Bearing > INSPECTION">
Noise from the underbody
Wheel is out of balance.
Check the wheel balance. Tire and Wheel > INSPECTION">
Front wheel alignment
Check the front wheel alignment. Wheel Alignment > INSPECTION">
Rear wheel alignment
Check the rear wheel alignment. Wheel Alignment > INSPECTION">
Front strut
Check the front strut. Front Strut > INSPECTION">
Rear shock absorber
Check the rear shock absorber. Rear Shock Absorber > INSPECTION">
InstallationRemoval
EXTERIOR/INTERIOR TRIM > Roof MoldingREMOVALCAUTION:Be careful not to damage the body.1. Remove the roof rail assembly. (model with roof rail) Roof Rail > REMOVAL">2. Turn over the front end of the molding - roof.3. Slide the inner fastener in the direction of the arrow using a flat t ...
General precautions regarding SRS airbag system and children
WARNING
Always ensure that children are seated in the rear seats of your Subaru Ascent
and are properly restrained using appropriate safety systems. The SRS airbag deploys
with extremely high speed and force, which can cause severe injuries or even be
fatal to children, particularly if th ...
Dtc u0422 invalid data received from body control module
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULEDetected when CAN data from BIU is abnormal.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE"> ...