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
2 answers 5 comments
ANSWER by on August 23, 2012
Will need scanner to ckeck TPS% from closed throttle to wot. KOEO.
COMMENT by on 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 on 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 on 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 on August 24, 2012
COMMENT by on 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 on August 24, 2012
seek diag and est to determine problem a scanner will be needed
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