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Topic: Intellitec Multiplex Controls : Lights turn on and off randomly  (Read 552 times) previous topic - next topic

Intellitec Multiplex Controls : Lights turn on and off randomly

Hi,

All our lights turned on and off randomly in the middle of the night and still do.

What can be causing that ?

Batteries and inverter tested OK

Thank you
Diane and Louie
2004 U295

239-990-4456
Diane and Louie
2004 38ft U295 Cummins ISL 400
2000 Mazda Miata
1949 Studebaker truck

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #1
When that happened to us several years ago, it was the module in the wet/sewer bay failing.  That made the system think it was disconnecting and reconnecting when it does that.
Ellen & David
2005  U320  4030  PBTS
2017 GMC Acadia
MC# 16978 Build #6330

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #2
Did you have to replace the module ?

We just put the master back together in order to try troubleshooting the module in the wet bay and our problem disappeared...  for now...

I will keep watching this tread and welcome any Ideas so we know what to try when it comes back.....

Thank you
Diane and Louie
2004 38ft U295 Cummins ISL 400
2000 Mazda Miata
1949 Studebaker truck

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #3
Hi,

All our lights turned on and off randomly in the middle of the night and still do.

What can be causing that ?

Batteries and inverter tested OK

Thank you
Diane and Louie
2004 U295

239-990-4456
Congratulations; your coach is possessed. May I offer my exorcism services?
Tim Dianics
Pam Sapienza
Vader PupZilla Labrador Canine Beast (AKA Pup)
Columbia, MO
1996 U320 4000
2021 Jeep Gladiator, Diesel

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #4
Hahaha yes please.

The poltergeist is back. Too late/dark to start taking module appart. We will work on it tomorrow. Any advice welcome.

Merry Christmas everyone

Hohoho
Diane and Louie
2004 38ft U295 Cummins ISL 400
2000 Mazda Miata
1949 Studebaker truck

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #5
Hahaha yes please.

The poltergeist is back. Too late/dark to start taking module appart. We will work on it tomorrow. Any advice welcome.

Merry Christmas everyone

Hohoho
Merry Christmas!

When the CAN bus* solid state automotive control systems become "interesting" it's usually because of low voltage.  A volt meter clipped into the control module can tell you what the voltage is when issues crop up without disturbing the power leads.

* "A Controller Area Network is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other's applications without a host computer."

Or turn lights on and off without the need to run wires to and from each switch.  Best fun is when the battery is low in your minivan and the CAN bus turns all the lights on to really really make sure the battery is dead.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #6
Thank you for the reply,

i already tested my batteries and they are in great shape, but i never checked voltage at the 4 modules , could be a faulty connection or intermittent short.
Diane and Louie
2004 38ft U295 Cummins ISL 400
2000 Mazda Miata
1949 Studebaker truck

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #7
Thank you for the reply,
but i never checked voltage at the 4 modules , could be a faulty connection or intermittent short.
Intermittent.  My condolences.  Art.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

 

Re: Intellitec Multiplex Controls : Lights turn on and off randomly

Reply #8
UPDATE on our problem/poltergeist. 

About a week agi, we disconnected the wet/sewer bay module like suggested and it did not come back.

Thank you for the advice

Diane and Louie
2004 38ft U295 Cummins ISL 400
2000 Mazda Miata
1949 Studebaker truck