My XJC (1977) central locking has not worked since I got the car twelve
months ago. So I thought I would rectify it while the interior is out for a
Leatherique overhaul. I managed to trace all wiring and find the bits and
pieces but can’t get the central locking to work. Push the rocker switch
and no response at all. Help please!
All individual components seem OK. I dismantled and cleaned the switch and
checked its operation. The door lock solenoids work if I apply power to the
wires in the centre console. The Thermal Circuit Breaker works OK. I can
hear the two relays (inside the rear seat cross member) click when I apply
power to the leads.
If I hook up the main orange /green (lock), orange/red (unlock) and brown
power wires direct to the switch (bypassing the relays circuit) the central
locking works fine. But if I connect it all up correctly nothing happens?
1; What is the correct wiring sequence to the console switch? The switch
has six numbered terminals and there are four wires.
2: If I can get the relays to click by providing power to them are they OK?
3; Can I bypass the relays and leave them disconnected for the long term
3; Any other suggestions as to what could be wrong?
My last alternative is to throw the whole Jag system out and replace it with
the central locking that is an option with the new high tech
immobiliser/alarm system I am having fitted next week. Comments and
experience would be appreciated.
Jaguar XJC 5.3 1977
The archives and FAQ will answer many queries on the XJ series…
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