pwood999's latest activity

My understanding that for an L405 you need to use Topix to get access to wiring diagrams, etc. But if thye were intermittent, check & clean all the connectors. The nork that designed it probably programmed it to shutdown just because one...

There was a thread somewhere many moons ago, where someone removed the airbag, and then various bits to replace the switch flexi-pcb. Not sure what forum, or if the thread still exists though.

Might help if you specify what model, year, etc. But I agree, everyone on the planet should be able to park a car without beeping aids !!

I would say the indicator cancel, rather than disable !!

Cannot see any screenshot from you ?? And what are the values ??

Also, what is the part number on the replacement ECU, and is there any "tune" number on the labels ?

C507 - Pin 26 is one of the communication lines to the BECM. Definitely not a ground. Try it this way with the replacement ECU & extra steps: 1) Switch on but do not start. 2) Put GEMS into Security Learn Mode 3) Turn ignition off and on...

No the GEMS process is not the same. For GEMS, then BECM sends the code when switched on - - - but only if it gets a valid immobilisation signal from the FOB. This should happen when the fob is pressed, or inserted into the ignition. Note...

No the BECM sends the code when switched on - - - but only if it gets a valid immobilisation signal from the FOB. This should happen when the fob is pressed, or inserted into the ignition. 1) Switch on but do not start. 2) Put GEMS into...

That's how I understand it from the Nanocom GEMS guide. Before you do it, check in the BECM menus. Go to Settings / Alarm / Scroll to last screen. There you will see the stored code, which must be greater than zero, and less than 65535. I...

Could be open circuit on the PCB, connector problem, or a bad pot.

It's better to do a recording of the O2 sensor data. Select the "disc" icon on the bottom right of the screen & enter a filename (less than 8 characters). It will start recording until you tell it to stop, and thne save a CSV file to the...

Yes why not. * The left & right O2 heater circuits should have 12V on one side, and the return to pin-21 (pre-cat) & pin-28 (post cat). * The actual sensor side will need an oscilloscope scope or very-fast digital meter to see the switching...

£12 thousand sounds rather a lot ??

If you haven't tried to measure them, why are you posting them ? ⬇️⬇️

There's an Odo Sync option in Nanocom. No idea if $h1tpart also has it ?

Just for clarity are you trying to use the clamp or wired probes to measure voltage ?

Also how can sensor voltages vary when disconnected?

Based on google search results, most likely it's either leaking air, or the pump is not filling the tank. The other error "U0421-68 (2F) = Invalid data received from ride level control module"

For the GEMS O2 sensors, you're better off using a generic OBD tool with graph displays. I use one of these dongles with either iPhone/iPad or Android phones & tablets. Car Scanner Pro works really well and has free & paid version. It reads...

+1 on that. Looking at the videos & info out there, $h1tpart basically took a generic OBD reader, and got a 3rd party to make it look like an LR diagnostic. The "coverage" is vague at best, and after a few years they charge annual...

The motors are hard to find. For the pots, I used these from eBay. https://www.ebay.co.uk/itm/172890189265 Mostly it's dry solder joints on the PCB, or aging of the connector contacts that plugs into the HEVAC. I had to replace many of the...

You must have something wrong with how you are measuring them ? The O2 sensors can only swing from 0V to 5V !! 320V is not normally possible. If they did reach this voltage, it would explain the GEMS ECU failure !!

To answer the first question, the descriptions are on the screen in the list !! Yes the descriptions are vague & often conflicting, but that's common across all diagnostics. For example first screenshot shows windows relay "short to...

Less resistance 👍

Even better IMO done with the spark plugs out.

Blend & distribution motors have 5 wires, not 4.

As said above, when changing GEMS ECU you need to re-sync GEMS to the BECM. If you simply swap them without doing any re-sync the spare will NOT work, but the original should still have the matching code to the BECM. Regarding disconnecting the...

Here you go . . . . . From GEMS Nanocom Guide From RAVE HEVAC Description: