Cruise control non functional... where to start?
#1
Cruise control non functional... where to start?
Just noticed (never tried in the last 2 years I've owned it lol!) that the cruise control doesn't work. At first I figured I just didn't know how to work it, so I pulled over, broke out the manual and followed steps and nothin. The green light comes on the dash when you turn it on, but the steering wheel controls dont seem to make it do anything... I'm in D+H doesn't seem to want to do it at any speed. All the other steering wheel controls work for the radio, so I don't think its a wire/button issue. Where should I start to look? Fuses are all a-o-k but to be honest, I don't really know how the system even works. ECU, BCU, its own thing? Any vac hoses, wires, cables or sensors to look at first? '00 Disco
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There may be a vacuum release switch on the brake pedal as Discovery I.
On Discovery I there is a motor that generates vacuum to pull in the diaphragm.
One more test--
Pull the hose from the diaphragm which pulls open the throttle.
Pull the throttle to wide open via the diaphragm assy.
Put your finger on where the hose went in to make a seal.
Let the throttle go.
Should hold some pressure.
On Discovery I there is a motor that generates vacuum to pull in the diaphragm.
One more test--
Pull the hose from the diaphragm which pulls open the throttle.
Pull the throttle to wide open via the diaphragm assy.
Put your finger on where the hose went in to make a seal.
Let the throttle go.
Should hold some pressure.
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Mine didnt work when I bought the DII. The fuse was blown and the hose coming off the bottom of the diaphram was cracked right before it connects to the CC diaphram. I think it is the age of the hoses coupled with the sharp bends in the routing of them causing these to fail. My cruise control works now.
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