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92 740 Turbo Wagon Central Locking

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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Dalpatine
Posts: 13
Joined: 21 March 2015
Year and Model: 92 740 Turbo/ 93 940
Location: Indiana, USA

92 740 Turbo Wagon Central Locking

Post by Dalpatine »

All,

I have a new to me 92 740 turbo wagon that has been garage kept and is in fantastic shape. (He bought it in 2010 with under 60,000 miles on it) it now has around 100,000. The previous owner said recently that within the last month the central locking stopped working. I can unlock each door individually and it doesn't seem to be an issue with the actual locks themselves. But I could be wrong.

I am able to live with this, but I would like to see if there might be any ideas on what could be fixed. Could it be a relay? If so which one? I have seen multiple relay diagrams on the interwebs and they all seem to show either K or L as the central locking relay.

Or is it something else entirely? Any help would be much appreciated!
ImageUploadedByTapatalk1427241731.419408.jpg
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Dalpatine
-1992 Volvo 740 Turbo Wagon
-1993 Volvo 940 Wagon

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93Regina
Posts: 2813
Joined: 18 January 2014
Year and Model: 93:240/940
Location: Sunflower State
Been thanked: 65 times

Post by 93Regina »

Dalpatine wrote:The previous owner said recently that within the last month the central locking stopped working.
See diagram

See this also: does your hazard warning flashers work?

User avatar
Dalpatine
Posts: 13
Joined: 21 March 2015
Year and Model: 92 740 Turbo/ 93 940
Location: Indiana, USA

Post by Dalpatine »

Thanks, the hazard flashers work fine. So I don't think it has to do with the fuses. I have a replacement relay on the way to see if that could be causing the problem.

If I get too impatient waiting on it to arrive I also have a 93 940, if I am correct the central locking relay are the same on both. Could I test my theory by swapping them out?
Dalpatine
-1992 Volvo 740 Turbo Wagon
-1993 Volvo 940 Wagon

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