Customer complains of intermittent loss of power steering. During
diagnosis, DTC U0131 (Instrument cluster: Communication error to EHPAS
control module) is retrieved.
Inspect the #4 Body Ground Point (found under the hood on the right side
frame rail, just forward of the #3 Engine Mount). Verify that the #4
Body Ground Point bolt is tight and the #4 Body Ground Wire is secure to
the frame.
If the connection is loose, remove the bolt, clean the contacts and
reinstall the ground wire, making sure to tighten the bolt. If the bolt
is tight and the connection is secure, refer to the Workshop Manual,
section 09-02B ON-BOARD DIAGNOSTIC MULTIPLEX COMMUNICATION SYSTEM)
for further diagnostics.
Published in March/April 2006 Mtips