Had these codes. P0123 TPS A circuit high input P2103 Throttle actuator control circuit high, P3125 TPS A/B Voltage correlation
Toyota Q&AAsk Your Question
2005 Toyota Corolla Question: my car hesitates on acceleration,
Answer #1pushrod August 23, 2012, 15:46Master
Will need scanner to ckeck TPS% from closed throttle to wot. KOEO.
Replytabiri, August 24, 2012, 06:43Rookie
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.
Replypushrod, August 24, 2012, 08:01Master
What is the code(s) must be hard fault if lamp won't go off. Most all scanners can read
Replytabiri, August 24, 2012, 08:33Rookie
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.
Replypushrod, August 24, 2012, 08:48Master
Replytabiri, August 26, 2012, 12:53Rookie
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 #2Greg's Orange Auto (14209 Answers) , Orange, CA - (714) 361-9386globalhelper August 24, 2012, 05:49Master
seek diag and est to determine problem a scanner will be needed