On my application, the TPS 1 voltage at idle was about .7 and TPS 2 was 4.3 volts. As the throttle opened, the TPS 1 voltage climbed and TPS 2 fell. TPS 1 + TPS 2 voltages should add to 5. I don't know for a fact that 2013 is the same, but I suspect it is. The... Login to read more.