my car hesitates on acceleration, on 2005 Toyota Corolla

Had these codes. P0123 TPS A circuit high input P2103 Throttle actuator control circuit high, P3125 TPS A/B Voltage correlation

by in Chesapeake, VA on August 23, 2012
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2 answers 5 comments
ANSWER by , August 23, 2012
Will need scanner to ckeck TPS% from closed throttle to wot. KOEO.
COMMENT by , August 24, 2012
Scanner can read codes but can,t read Data stream. It gives a no communication info. I use snap-on solus pro. When I Erase the DTCs and recheck after i get ( No DTC detected) but the Malfunction indicator Lamp(MIL) will not go off. I have replace the throttle twice.
COMMENT by , August 24, 2012
What is the code(s) must be hard fault if lamp won't go off. Most all scanners can read TPS%.
COMMENT by , August 24, 2012
Thanks for your quick response. please these are the codes: P0123 Throttle position sensor switch A circuit high input P2103 Throttle actuator control motor high P2135 Throttle/Pedal position sensor switch 'A'/'B' voltage correlation. When I Erase the scanner shows no faults but the MIL will still be on. The fault is intermittent.
COMMENT by , August 24, 2012
COMMENT by , August 26, 2012
Thank you all for your help. I have managed to solve the problem with the Corolla. it was the Electronic control Unit. (ECU) I'm most greatful to you all.
ANSWER by , August 24, 2012
seek diag and est to determine problem a scanner will be needed