Starter battery drain - INJ 30A FUSE - HELP….

Technical questions and answers about the Mazda Bongo

Moderators: Doone, westonwarrior

Post Reply
ItaBongo
Apprentice Bongonaut
Posts: 7
Joined: Tue Aug 26, 2025 1:39 am

Starter battery drain - INJ 30A FUSE - HELP….

Post by ItaBongo » Sun Sep 07, 2025 6:14 am

Hi

Recently bought a bongo which unfortunately has a problem with draining the starter battery

There’s a constant draw of around 0.23 amps from the battery.

I’ve found that the only fuse that makes this drop is the 30A fuse labelled as INJ (near the positive on the stater battery in the front bonnet).

What does this fuse feed ??

Is this normal drawing power when cat is off and locked ?

Thank you
gilly99
Bongolier
Posts: 105
Joined: Mon Jul 02, 2012 6:20 pm
Location: Bristol, UK

Re: Starter battery drain - INJ 30A FUSE - HELP….

Post by gilly99 » Sun Sep 07, 2025 7:21 am

Drawing a dark current is a common problem on bongos.... usually something on interior circuits, cigar lighters, lights, door loom problems etc. Sounds like you have disconnected negative terminal and checked all those with a multimeter?

For some info. on fuses and circuits, try this link....
http://www.g8dhe.net/bwm/
4wd diesel, 1999 ex tintop with lowline raising roof
Keep a cool head, black ball game.
User avatar
g8dhe
Supreme Being
Posts: 10762
Joined: Sun Apr 13, 2008 10:06 pm
Location: Worthing, West Sussex.

Re: Starter battery drain - INJ 30A FUSE - HELP….

Post by g8dhe » Sun Sep 07, 2025 11:58 am

The INJectors circuit feeds several circuits including the engine fuel Injectors. depends on which engine your referring too;
FE-E 2l engine
Screenshot 2025-09-07 115526.jpg
J5-DE V6
Screenshot 2025-09-07 115729.jpg
Geoff
2001 Aero V6, AFT, full side conversion.
Post Reply

Return to “Techie Stuff”