Audio Systems: 2003 4Runner JBL 6 disc, digital amp, ok check

Question
I have a 2003 4Runner JBL 6 disc (Type 2).  CD player works, great sound, but when I turn on radio only paasenger front speaker works.  Reception is fine so it is not an antennae issue. Any ideas?

Answer
Bad radio tuner or bad jbl amplifier this vehicle uses a digital amp

do you have the same bass,treble,fader,balance  in all the sources ?
press the audio control knob and check they have to be the same in all sources,let me know what happen

if ok check if this is your radio toyota A51817 they have a tuner problem