K2 starts recording and then stops

I've already heard that they have even cancelled trains in the uk due to the heat.

The temperatures are almost the same here. Today it was 38°C (currently still 35°C) and that is not a temperature were I would ride my bike.

They cancel trains here if it’s too hot, too cold, or if “the wrong kind f leaves have fallen on the track”! Really, that was an excuse put out by one train company some years ago.

Anyway, it’s much cooler here today, 25 deg C at 1pm, so I’m going to take the BMW out for a run with the DVR from the Suzuki. I’ll report back later.

One further thing that I’ve just remembered about the K2s installation on the Suzuki. The bike is also fitted with Dynatek S electronic ignition which also requires a trigger wire connected to a switched permanent supply. As it happens the Dyna’s trigger wire is also connected to the brake lamp switch live supply, at the same location as the K2’s. However the Dyna is working perfectly, soI don’t think it’s brake lamp supply which is causing the problems with the K2.

I’ve just returned from a test run on the BMW using the DVR from the Suzuki. It recorded flawlessly, except for missing the first few seconds after the bike is switched on. I’m assuming this is due to the fact that on the BMW, the power module/converter is powered up through a Gen II EzCan, using the third wire from the EzCan plug as the live trigger.

This seems to me to back up the theory that it's either the power module/converter fitted to the Suzuki which is at fault, or the connection of its yellow trigger wire. I imagine the only other test that might be done is to install the DVR from the BMW onto the Suzuki, and check whether that DVR then displays the same errors. This would further confirm that it is that the fault lies with the converter on the Suzuki, or the connection of its yellow wire. Unfortunately, I’m not able to do that test because the Suzuki is off to the insurer's workshop for an undefined period for the crash damage to be quantified and then to be repaired. Who knows how long that will take?

I think my way forward is to wait until the Suzuki is returned to me and then go from there, first double checking the yellow trigger wire connection, and then, if necessary, replacing the power module/converter.

Thanks to Frostie particularly for your help, and also to the others who made contributions.

Suzuki GS1000 which I bought new in 1979

A real classic bike. Nice.

The K2 is about 2.5 years old.
....
Ambient temperatures over the time I’ve used have been between 17 & 24 degrees C.

Hmmm...ok...not warm enough. I can remember that an older version of the power module had issues when it got warm. But the user who reported the issue first had ambient temperatures of around 38°C.

But as his K2 was new and he reported this issue in 2020, chances are that you have the same power module as him.

Are you able to power the K2 via USB for a while? Just to check if it will stop recording again?

Do you mean disconnecting the DVR power supply from the Innovv power module and powering it from a USB lead via a USB power supply connected To the bike’s battery? Yes, I can do that. Presumably I will need to manually switch the DVR on and off each time I use the bike?

I do have another K2 on another bike. I could swap the DVR from the GS1000 into the other bike to see if it works correctly there. That would eliminate any problem with the DVR itself and narrow it down to either the power module or the connection/function of the switched live cable and yellow ACC trigger wire to the power module

Do you mean disconnecting the DVR power supply from the Innovv power module and powering it from a USB lead via a USB power supply connected To the bike’s battery? 

This way or by using a external power bank. It does not matter. I simply want to check the DVR itself without any interference of the power module.

I do have another K2 on another bike. I could swap the DVR from the GS1000 into the other bike to see if it works correctly there.

Didn't know you have a second K2 we could use for a test. Of course it would be a good idea to swap the DVR between the bikes to see whether the problem follows or not.

..foot brake light power supply.

Could you change another switch alive cable to connect the yellow ACC wire?

We suggest you connect some wire which have power when you turn on the ignition. But not the brake light, as the braket light only have power when you foot brake. That means it only record the video when you brake.

Steven,

surely if the brake light switch circuit (O/G in the wiring diagram) was live only when the rear brake switch closed, the K2 would not start to record until I operated the rear brake? In fact the K2 operates for a few minutes at the beginning of each journey and then shuts down, whether the rear brake has been used or not. The actual length of time it operates for seems to vary each time.

The wiring diagram suggests the O cable to the fuse box is the only permanent switched live from the ignition switch. This cable, via the fuse box, supplies the O/W, O/R & O/G circuits which between them supply power to the turn signals, the horns, the neutral and pressure warning lights, the engine kill switch and the brake light switches (both hand and foot brake switches). All these circuits have switches of one type or another downstream of the likely take-off point for the K2 live trigger. Wouldn’t they all be “dead” most of the time until the relevant button or switch was pressed?

If I switch the ignition on and put a volt meter between the end of the O/G cable at the rear brake light switch and earth, I get a reading of just over 12v, whether or not the brake light switch is operated. I’m not really sure I understand how the live trigger circuit in the K2 operates, but I’m guessing there must be some internal connection to earth to bring the K2 trigger circuit alive to wake up the K2. In which case, why does the brake light switch need to be operated?

I don’t claim to be an expert in electrics in anyway, so will be very grateful if someone shows me where I’m getting things wrong.

Thanks to everyone who has offered help so far.