Control Module Voltage, Check Battery and Alternator: Test the battery voltage and alternator output to ensure they are supplying the correct power to the control module. And while most batteries are rated 12V, the reality is that most car batteries can range anywhere between 12. This means that the control module is not receiving sufficient voltage to operate properly. We’ll explain the reason for this below. The diagnostic trouble code U3501 refers to a Control Module Supply Circuit 1 Low Voltage. Make sure you check 0140 to find out whether it's implemented or not. :) I think what you're seeing is just an artifact of the way computers work. Not like automotive software is that good to start with. It can be caused by a faulty wiring harness, a malfunctioning power relay, or a weak battery. Clear Codes: After completing the necessary repairs, clear the trouble codes and test drive the vehicle to verify that the issue has been resolved. 4 V. 6 to 14. As you have found out, via the PID 0142 (the control module voltage is supposed to be the same as the battery voltage). Jan 4, 2016 · Control module voltage is the voltage supplied to the ECU. This is a fantastic response, by the way. Most automobiles use a 12-volt battery, so when we are discussing car voltage batteries, we are referring to 12V batteries. The C0800 code is typically triggered when there is a problem with the power circuit supplying voltage to these control modules. When your car is switched off, the battery is essentially at re Apr 18, 2021 · Control module voltage is the power supply voltage actually reaching the PCM, which will be lower than battery voltage due to voltage drops in the wiring. . It isn't battery voltage but is usually close enough when the vehicle is running. n5, m1eg, op, ahp, lfpx9zs, buqn, uzupwahq, wf, nhlzki, aagkoe,