It does not arrive food to the TPS sensor

Hello friends, my problem is the following is a Chinese car of 2010 Jinbei Motor 1100 Gasolinero turns out that 1800RPM is accelerated. The check was on I have shone it and I got out of the TPS sensor. I checked it and I gave myself with the surprise that it does not reach 5V food. I check the tip to end wiring from the sensor connector to the exit of the ECU and everything is well there is no cutting in the doubt, my doubt is whether it can be the ECU since it does not send the feed but to the other sensors and actuators if it comes normal ... and something else