Ranger Mods

Phillwehbe89 wrote: ↑Sun Jan 26, 2020 6:53 pm They changer the module its been about 2 months. I hooked up forscan to change a few things and it poped up on the screen with u3000-49-28. They told me my battery also need changing do ypu think this is true my car start straight away? Also i tried adding intelligent 4wd amd got a dtc u0138-00-48 lost control with all terrain module do you think a reset would work?

saeb wrote: ↑Thu Aug 24, 2017 1:47 pm I have explained this previously but this is why BCM's need replacing. This is not due to people resetting codes after fitting LED headlights etc. but most likely because of the quality of LED or other unrelated problems with add on accessories.

I will hopefully be able to reset these in the future.

Field Effect Transistor (FET) Protection

A Field Effect Transistor (FET) is a type of transistor that, when used with module software, monitors and controls current flow on module outputs. The FET protection strategy prevents module damage in the event of excessive current flow.

The BCM utilizes a FET protective circuit strategy for many of its outputs (for example, a headlamp output circuit). Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down (turns off the voltage or ground provided by the module) when a fault event is detected. A short circuit DTC is stored at the fault event and a cumulative counter is started.

When the demand for the output is no longer present, the module resets the FET circuit protection to allow the circuit to function. The next time the driver requests a circuit to activate that has been shut down by a previous short (FET protection) and the circuit is still shorted, the FET protection shuts off the circuit again and the cumulative counter advances.

When the excessive circuit load occurs often enough, the module shuts down the output until a repair procedure is carried out. Each FET protected circuit has 3 predefined levels of short circuit tolerance based on the harmful effect of each circuit fault on the FET and the ability of the FET to withstand it. A module lifetime level of fault events is established based upon the durability of the FET. If the total tolerance level is determined to be 600 fault events, the 3 predefined levels would be 200, 400 and 600 fault events.

When each tolerance level is reached, DTC U1000:00 sets along with the short circuit DTC that was stored on the first failure. These DTCs cannot be cleared until the fault is repaired.

After the repair, it is necessary to clear the DTCs. Use the clear DTC operation on the scan tool, cycle the ignition, and run the BCM on-demand self-test.

The module never resets the fault event counter to zero and continues to advance the fault event counter as short circuit fault events occur. If the number of short circuit fault events reach the third level, DTC U3000:49 sets along with the associated short circuit DTC. DTC U3000:49 cannot be cleared and the module must be replaced after the initial fault is repaired.

saeb wrote:Have 3 on the floor, have not looked properly yet as the units need to be separated and looks like a job I don't want to look at right now. May look into it further when I have some time.