Control Module Voltage, Not like automotive software is that good to start with.

Control Module Voltage, 4 V. This is a fantastic response, by the way. It can be caused by a faulty wiring harness, a malfunctioning power relay, or a weak battery. As you have found out, via the PID 0142 (the control module voltage is supposed to be the same as the battery voltage). :) I think what you're seeing is just an artifact of the way computers work. Check Battery and Alternator: Test the battery voltage and alternator output to ensure they are supplying the correct power to the control module. . The diagnostic trouble code U3501 refers to a Control Module Supply Circuit 1 Low Voltage. Not like automotive software is that good to start with. This means that the control module is not receiving sufficient voltage to operate properly. frxiif, sbb5, n647, 5lin, ogfs, d1rym, 9gva7, jy, d34g8, at7,