Electrical Drain! do i start to pull fuses?

An alchemy of sparks, copper wire and earth

Moderators: User administrators, Moderators

Post Reply
NoobyNiall
Registered user
Posts: 35
Joined: 09 Jul 2024, 18:26
80-90 Mem No: 0

Electrical Drain! do i start to pull fuses?

Post by NoobyNiall »

Hi All,

The van wasn't started in 4 weeks, found the battery completely dead/ murdered in fact :?

Got a new battery, Van started and started some tests, I noted it started to drain the battery straight away.
Disconnected a few cables etc to narrow it down, its only when i pull the 70 amp relay in the junction box in the engine bay that it stops the drain.
So looking for advice, to i have a ground fault? do i start to pull fuses or check my earthing points or maybe water got in on them? :?:

Thanks for any tips / advice.

 
T25 1989

User avatar
Aidan
Trader
Posts: 7304
Joined: 11 Oct 2005, 19:21
80-90 Mem No: 742
Location: Llanfyllin, mid Wales : )

Re: Electrical Drain! do i start to pull fuses?

Post by Aidan »

which engine do you have ?
AIDAN :)

NoobyNiall
Registered user
Posts: 35
Joined: 09 Jul 2024, 18:26
80-90 Mem No: 0

Re: Electrical Drain! do i start to pull fuses?

Post by NoobyNiall »

1.7 Diesel 
T25 1989

User avatar
Aidan
Trader
Posts: 7304
Joined: 11 Oct 2005, 19:21
80-90 Mem No: 742
Location: Llanfyllin, mid Wales : )

Re: Electrical Drain! do i start to pull fuses?

Post by Aidan »

afaicr the only relay in a JX engine bay is the glowplug relay which is ignition fed
the wiring diagram is HERE
AIDAN :)

NoobyNiall
Registered user
Posts: 35
Joined: 09 Jul 2024, 18:26
80-90 Mem No: 0

Re: Electrical Drain! do i start to pull fuses?

Post by NoobyNiall »

Thanks Aidan, would you also have the change over relay circuit?
T25 1989

User avatar
Aidan
Trader
Posts: 7304
Joined: 11 Oct 2005, 19:21
80-90 Mem No: 742
Location: Llanfyllin, mid Wales : )

Re: Electrical Drain! do i start to pull fuses?

Post by Aidan »

change over relay ? que ?

I don't really do Diesel
AIDAN :)

User avatar
ZsZ
Registered user
Posts: 1581
Joined: 12 Feb 2009, 16:28
80-90 Mem No: 14899
Location: Budapest, Hungary
Contact:

Re: Electrical Drain! do i start to pull fuses?

Post by ZsZ »

By default the factory black junction box has two relays on a JX. One bigger one, the glow plug relay - which is a control unit, not a standard relay - and one small relay for the aux coolant pump.

Both circuits have battery feed so when they fail closed they can drain your battery.

A NA diesel has only the glow plug relay IIRC.

There is no standard 70A relay by factory.
Try to post a pic of the junction box which relay you are talking about.
Zoltan
1986 Multivan ex-Caravelle. Van since 2006, running mTDi 1Z since 2008 with Fiat Croma 1.9 TDid pump 2008-2019, custom pump since 2019
5spd custom box 4.57 diff + 0.74 5th

Post Reply