Only LOAD gauge works in Configurator

bka · Post by **bka** » Sat Jan 29, 2011 9:08 pm

I've been running MJLJ for a few years on my truck. It works flawlessly and I am using ver 3.2 of the software. I was going to view my map and found that only the Load gauge works in the software. Engine runs great, not in limp mode, and I can view, download, upload, and modify my map. The tach gauge doesn't work nor does the focus move throughout the cells. More of an inconvenience than anything but I would like it to work in case I want to make any engine modifications. The only mod I have done is to connect a tachometer to Pin 2 on the EDIS unit. Thank you.

Post by **brentp** » Sun Jan 30, 2011 6:25 pm

It sounds as if the Megajolt is not getting the PIP signal from the EDIS module. Double check all you connections between the EDIS and Megajolt- also check power and especially ground connections.

Have you put a timing light on the engine to verify ignition advance changes as RPM changes?

bka · Post by **bka** » Mon Jan 31, 2011 1:22 am

wouldn't the engine not run or run poorly if no PIP signal was present?

Post by **brentp** » Mon Jan 31, 2011 10:38 pm

If the Megajolt isn't receiving the PIP signal it won't emit the SAW signal, which causes the EDIS module to run in 'limp home' mode. (advance fixed at 10 degrees). In this case the engine will run smootly, but with reduced power.

You can verify this with a timing light as described in the previous reply.

mini_mad69 · Post by **mini_mad69** » Mon Feb 28, 2011 5:14 pm

I've been having lot's of problems recently trying to get my rev limiter working. While messing around with it im now having the same problem as the OP.

So I've given it new power, earth and wired the pip/saw better, im still not getting a rev counter reading through the laptop, and there is no difference with the megajolt unit plugged in or not. It would appear my megajolt isn't recieving the PIP signal. How would I go about checking the EDIS is putting out a Pip signal?

I've tried another EDIS4, and the problem still exists.

mini_mad69 · Post by **mini_mad69** » Mon Feb 28, 2011 5:44 pm

Found it in the installation guide. I'll get a multimeter tomorrow and check im getting a PIP signal.

Post by **brentp** » Mon Feb 28, 2011 8:02 pm

Are you specifically saying the load gauge works, and you can read/write ignition maps without error, but RPM doesn't work?

Thank you, keep us posted.

mini_mad69 · Post by **mini_mad69** » Mon Feb 28, 2011 8:22 pm

Yeah thats excactly it.

It was working perfectly and I was messing around trying to get my hard limiter working has meant that I've disturbed something and now it's not working. Just stuck in EDIS limp mode.

mini_mad69 · Post by **mini_mad69** » Tue Mar 01, 2011 3:58 pm

PIP is 12.7 with engine not running, and 6.3 with it running. Megajolt still isn't seeing it.

Is my ECU broken?