Q2. Was there a recall in Japan because of any problems with the zzt231 or zzt230?

A2.  None for 2000 and 2001 celica. But minor problems often happened.

Noise from timing belt.
Clouded head light cover.
Scratch from seat belt.

      Yes for 2002 celica (GT and GTS, 03/25/2002 to 11/01/2002)
        Problem of one-way valve in the fuel tank.

        With this bad valve, fuel might blow out when the pressure inside the fuel tank goes up.