Toyota has developed a new magnetic clutch relay for this application*.
Original Relay
Revised Relay
Toyota P/N = 90987-02022
Toyota P/N = 90987-02028
DENSO P/N = 156700-2470
DENSO P/N = 156700-3290
If the vehicle is exhibiting the symptoms previously described and the relay Toyota P/N is 90987-02022, replace it with a new relay (Toyota P/N 90987-02028).
*May also be seen in various models which have similar system configurations (e.g. 2002-2004 Toyota Camry; 2001-2004 Toyota Echo; 2001-2004 Toyota Celica; 2002-2004 Toyota 4Runner; 2002-2004 Toyota Corolla; 2003-2004 Toyota Highlander, 2003-2004 Toyota Matrix; 2003-2004 Toyota Sienna; 2003-2004 Toyota Solara).