Central locking not working - ideas please

Technical questions and answers about the Mazda Bongo

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Alacrity
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Central locking not working - ideas please

Post by Alacrity » Wed Jun 11, 2014 4:34 pm

I have just got the Bongo out of mothballs to get ready to sell it, new battery & all is well - sort of. The central locking no longer works - it was fine when last used but now does nothing when the key is turned. Fuse is OK (fuse no 4 according to the info I have). 1998 2.5d 4x4 Freetop.

Any ideas anyone?
35+ years working with autogearboxes - all day every day......for my sins
wonkanoby
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Re: Central locking not working - ideas please

Post by wonkanoby » Wed Jun 11, 2014 6:57 pm

battery in keyfob
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g8dhe
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Re: Central locking not working - ideas please

Post by g8dhe » Wed Jun 11, 2014 7:24 pm

You also need to check the Green 30Amp in the top row as that one provides the power to operate the solenoids.
Another possibility is that if you have a flat L/B then the top row left fuse 10 Amp will be connected to it and that controls the switching ....
Geoff
2001 Aero V6, AFT, full side conversion.
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Re: Central locking not working - ideas please

Post by Bob » Wed Jun 11, 2014 8:42 pm

Could it be the classic fail where the loom goes into the door?
Take a torch, toilet roll, and tea bags.

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Re: Central locking not working - ideas please

Post by Alacrity » Thu Jun 12, 2014 9:47 am

The l/b was probably flat but with the engine running (drove it for about 8 miles) the l/b powered circuits are working so I know that is being charged & doing its job. No 4 fuse is the green 30amp as described & is OK. I don't have a key fob, only a key.

Someone suggested the relays go bad, any idea where/which one it is?

Thanks for all the suggestions so far.
35+ years working with autogearboxes - all day every day......for my sins
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g8dhe
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Re: Central locking not working - ideas please

Post by g8dhe » Thu Jun 12, 2014 12:22 pm

The relays are here;

Click the orange box for the electronics involved, the relays can be replaced, but I wouldn't put them at the top of my suspect list, drivers door wiring loom is perhaps more likely as there are three possible wires that could cause faults, the supply to the switch, then the two wires from the switch to the door relay module.
Geoff
2001 Aero V6, AFT, full side conversion.
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