Corsa b 2000 horn problem
2000 Vauxhall Corsa Club 3cylinder 998 cc

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Frank Hird
Driver
1 points

Problem added: Mar 8, 2021 (1 month ago)
Car was centrally locked and alarm set. No previous issues. Horn came on on its own. It wasn't the usual intermittent tone usually heard when the alarm goes off it was permanently on. The only way to stop it was to disconnect the battery. There is a power sounder next to the horn but this didn't come on when the battery was disconnected. Reconnecting the battery made the horn come on again. Switching on the ignition and starting the engine doesn't help either. So not sure if it is the power sounder, the horn relay or some other problem. Not sure where the relay would be. Any ideas?

Car details
Car: Vauxhall Corsa
Variant: Club 3cylinder 998 cc
Model Year: 2000
Category: Electrics, ECU, Warnings & Lights
Replies and Fixes
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whittingehame
Legend
18,349 points

Mar 8, 2021 (1 month ago) Edited on Mar 8, 2021 (1 month ago)
This is for a 2000 Corsa C . Have no schematic for older Corsa

For the Opel/Vauxhall Corsa C 2000, 2001, 2002, 2003,2004, 2005, 2006 model year.

Relay box Opel/Vauxhall Corsa C.

In engine compartment .

relay box layout.



1



2



3

Central locking relay- locking (driver’s door)

4

Central locking relay- deadlocking

5

Central locking relay-unlocking

6

Central locking relay-locking

7

Alarm system horn relay

8

Licence plate lamps relay

9

Rear screen washer pumprelay

10

Wind screen wiper motor relay-fast

11

Horn relay

12

Windscreen washer pump relay

13

Windscreen wiper motor relay-slow/intermittent

14

Rear screen wiper motor relay

15

Indicator relay – LH

16

Indicator relay – RH
Avatar
Frank Hird
Driver
1 points

Mar 8, 2021 (1 month ago)
Thanks for your reply. Unfortunately no box in engine compartment but I can see two relays above the fuse board situated to the right of the steering column. I don't know if there are others. I loosened the screws holding the fuseboard in but it won't come out. I think the wiring behind is very tight and I may have to remove the cover where the ECU is to loosen the cables to get better access.
Avatar
whittingehame
Legend
18,349 points

Mar 8, 2021 (1 month ago)
See if this is better ,

https://fusesdiagram.com/opel-vauxhall/fuses-and-relay-corsa-b.html
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Frank Hird
Driver
1 points

Mar 8, 2021 (1 month ago)
Thanks again for your response. There seem to be several variations and I have yet to see the right one. Although the car is an X reg Corsa club I think it falls in the 1997-2000 range. I have checked under the right pillar and there is only the ECU, no relays as shown in one of the diagrams in your link. I will look at the fuse board in more detail. Definitely no fuses or relays under the bonnet.
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