Honestly, you're probably testing the voltage drop fine the comment I made about the meter is less a reflection of the quality but rather the tool itself (even a typically lauded Fluke 88 is sometimes too slow for certain issues.) DMMs (Digital Multi-Meter) only refresh so fast, this issue might be occurring for a only a couple miliseconds, enough to confuse the ECM and almost kill the engine but too fast for a DMM to register it.
#Obdwiz forum how to#
Any suggestion on how to better test for the voltage drop? I have a pretty decent multimeter and it's not fluctuating any differently than when it's running normally. It does have the capability to record the data and save it in a. I'll post up the brand and software info next week. The scan tool is a inexpensive eBay find, so I have no doubt the quality is questionable and it won't capture Toyota specific codes. The Key emulator and remote start module are easy to get to, so I'll disconnect that to eliminate it. It will be Tuesday night before I will be able to get back on this. So I doubt this could be the issue, unless it was somehow taking down the CAN communication bus. I would note that a multimeter may not refresh fast enough to catch an intermittent failure like that.īCU/BCM refers to "Body Control Unit" or "Body Control Module" typically these control non-engine related functionality such as windows, door locks, light timers, ect. I agree with the poster above at this point I would unplug the remote starter and Key Emulator from the vehicle to eliminate it as a variable.Īlso you did not mention what scantool you are using, I'm going to guess since you mention laptop you're using a Chinese TIS Techstream software with mongoose cable? It may be difficult to get some oddball DTCs if you're not using a scantool capable of reading Toyota factory DTCs.Īlso since you are using a laptop based scantool are you able to record live streaming data? That might be a huge help in this case as you could post the file and/or video of the failure as so that we can review the data.
#Obdwiz forum driver#
Thanks for the response.Īll 4th Gen 4Runners came with an Immobilizer system, this requires an RFID equipped chip to communicate with the Immobilizer Module and authenticate the driver before letting the vehicle start. I just don't know much about that system. Does they key on a 2006 have a chip or RFID tag built in that could cause an intermittant problem like this? It does have the flashing key on they dash that goes off when you put the key in. One question I do have about this is why it requires a key emulator? I had to buy that extra at the time to make the system work. They showed me where to test from the key switch to see if the voltage was dropping.
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#Obdwiz forum install#
They told me there were no wires cut to install that system, but only tapped in and he highly doubted it could be the problem.
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Took it back to the installer to see if there was any possibility that unit could be failing and act this way. I do have a remote starter and thought that could be the problem. Good point, totally forgot to include that information.