  We study the deflection and time delay of light by the Sun in general scalar
extensions of the Standard Model which may violate the equivalence principle.
Despite the presence of the interaction $\phi FF$ or $\phi F \tilde{F}$ between
the scalar field and photon, we show that the bending and time delay of light
are the same as in Einstein's general relativity. The bending angle is obtained
using geometrical optics and compared with the angle obtained using another
method based on scattering amplitude. It is pointed out that the method based
on scattering amplitude can lead to wrong conclusions about potential energy
and light polarization. Also, we obtain a constraint on the generic scalar
particle from the parametrized post-Newtonian parameter $\gamma$, noting that
planet motions are affected by the scalar field as in scalar-tensor theories
with some modifications to the scalar field's couplings to the Sun and planets.
