Why does my BCM say no start?
Why does my BCM say no start?
A “no crank” or no start status on the engine may be observed when the BCM malfunctions. This is primarily because of the BCM’s miscommunication with other control systems of the vehicle.
How to troubleshoot a Body Control Module ( BCM )?
Turn the radio and CD player on. Sometimes a CD player will stop playing a CD and will begin broadcasting a radio station. The frequency of these actions depends on the severity of the malfunctioning BCM. Check the fuse box if you suspect that your vehicle’s BCM is on the blink. Make sure all the fuses are in good shape.
What happens when a BCM goes bad in a car?
As the BCM is communicating with other control elements of your car, its accomplishments of various functions may be hindered. For example, a defective BCM may trigger dashboard instrumentation cluster error and the car’s warning lights may flash on and off (such as the “check engine light”).
How does the Body Control Module reset work?
The input devices are the ones that send data to the BCM which in turn triggers the output devices to stimulate reaction to the other functions. As different information travels back and forth from the devices and the BCM, your internal car functions are controlled smoothly. The best part is that the BCM keeps everything together in one casing.
Can a BCM have a no start condition?
Because of the BCM’s communications with other modules and components you may experience a no crank or no start condition. In many cases, your BCM will alert you to issues with symptoms, warning lights or both.
What can cause a BCM module to fail?
Water, vibration, heat and age can all contribute to a module failing, which, depending on the placement of the unit in your vehicle, can be difficult to avoid. To keep your new BCM in the best shape possible, make sure it stays clean and dry, and protect it from unwanted shaking or excessive heat if at all possible.
How does a Body Control Module ( BCM ) work?
It streamlines the manufacturing and troubleshooting aspects of electronic modules by housing the modules into one, central unit instead of each function having its own device. It also coordinates the operating functions of many non-engine related ancillary items as well as security features.
Can a faulty body control module be reset?
Though the Body Control Module is sensitive, it performs helpful activities in the vehicle you are driving. You now know the symptoms of a faulty BCM, so what? Now you will also have to learn how to repair or reset the control module. The sensitivity of the whole system of the BCM is astounding.
Can a bad ECM cause a car to not start?
Of course, there are other reasons a car may not start, including a bad starter or a blown alternator. If you’ve replaced these parts and your car won’t start, your ECM is the most likely cause. Once again, you’ll need to take your car to a mechanic to be sure.
What can cause no communication between my PCM and my OBD scanner?
Not open for further replies. What can cause a no communication between the pcm and my scanner? Checked all fuses and good. Probably a broken wire. That was the issue with mine.
How can I tell if my minivan has no crank?
First, check for good ground at the PCM. Then check for a 5 volt reference signal (key on) at the throttle position sensor TPS (pink/yellow) wire. Also check for 8-9 volts at the camshaft position sensor CMP (brown/pink) wire.
Not open for further replies. What can cause a no communication between the pcm and my scanner? Checked all fuses and good. Probably a broken wire. That was the issue with mine.
As the BCM is communicating with other control elements of your car, its accomplishments of various functions may be hindered. For example, a defective BCM may trigger dashboard instrumentation cluster error and the car’s warning lights may flash on and off (such as the “check engine light”).
