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Home >> Lexus >> 2003 >> ES 300 >> Repair and Diagnosis >> External Pages >> Different car >> Section 411 (Rear Driveline Module) >> Rear Driveline Module >> Diagnosis And Testing >> Diagnosis And Testing - Rear Driveline Module Operation >> Driveline Module Diagnosis Chart
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Driveline Module Diagnosis Chart

WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
DRIVELINE MODULE DIAGNOSIS

CONDITION POSSIBLE CAUSES CORRECTION
Rear wheels not overrunning
  1. Bi-directional overrunning clutch failure
  1. Replace overrunning clutch components as required
No AWD in forward or reverse directions, propeller shaft turning
  1. Bi-directional overrunning clutch failure
  2. Viscous coupling failure
  3. Rear differential failure
  1. Replace overrunning clutch components as required
  2. Replace viscous coupling
  3. Replace the rear differential assembly
No AWD in forward or reverse directions, propeller shaft not turning
  1. Power transfer unit failure.
  1. Replace power transfer unit components as necessary
Vibration at all speeds, continuous torque transfer
  1. Mis-matched tires, worn tires on front axle.
  1. Replace worn or incorrect (mis-matched) tires with same make and size