Hanging Microswitch
Discussion
Whilst exploring the complexity and fine british craftsmanship of the wiring loom of my 92 4.3 which hangs tantalisingly over the top of the battery box I have come across a microswitch which is just hanging there. (Along with several important looking relays which obviously have been designed to hang there!). I reckon it does something and should fit somewhere ie not just hang - Whats it for and were does it fit? Any help would be appreciated
I was about to ask if it looks like it has been added as an after-thought, but that isn't likely to distinguish it from any other part of the wiring.
I guess someone might have hooked it up to an ECU reset line, if there is such a thing, but why would anyone want/need a permanent fixture for resetting it?
Alarm switch for the bonnet might be fitted (by a maniac) through the top of the footwell, but hard to see how it would fall all the way back through, and the alarm should have gone mental.
The only thing I can think of that has a moving part in that area might be a valve on the heater matrix?? Any chance the switch is used to sense when the valve is fully open or shut?
I guess someone might have hooked it up to an ECU reset line, if there is such a thing, but why would anyone want/need a permanent fixture for resetting it?
Alarm switch for the bonnet might be fitted (by a maniac) through the top of the footwell, but hard to see how it would fall all the way back through, and the alarm should have gone mental.
The only thing I can think of that has a moving part in that area might be a valve on the heater matrix?? Any chance the switch is used to sense when the valve is fully open or shut?
davidn said: So if the micro switch is nothing to do with the fuel pump where is it the reset? I thought I read somewhere there was one.
David
On the V8S the inertia switch is a rectangular plastic box about 2" wide and 3" high with a button on top, under the bonnet on the outside of the passengers footwell, just above the washer bottle. The button pops up on impact and you push it back down to reset it.
I think the arrangement on a Chimaera is slightly different and if memory serves you have a rollover valve in the boot by the filler neck, and an inertia switch under the dashboard on the passengers side. But its been a long time since I saw one so I could well be wrong there. In any case its worth knowing where these things live, the inertia switch on the V8S triggered the other day for no apparent reason after behaving perfectly for the last 120,000 miles. I thought the fuel pump relay gremlin was back, but luckily it was a separate and much simpler problem to fix.
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