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7th July 2020, 10:18 | #11 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
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Quote:
So as I understand it James, the LH reversing lamp from C0296-17 works but the RH (from C0286-15) doesn't. You say the earth connection is shared by both. When you're measuring the voltage at pin 15 with bulb fitted (0v) and removed (12v), is the voltage at pin 17 (LH bulb) constantly 12v? Please continue to use your voltmeter for this test. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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7th July 2020, 11:31 | #12 |
Newbie
Rover 75 CDT Join Date: Nov 2007
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Think i've made progress today.
Removed the glovebox again for access to K109. Connected a test bulb to pin 19, gearbox into reverse and ignition on. Not a flicker. Bridged the reverse switch connections and repeated test. Bingo we have light. Tested again with switch removed and connected, nothing. Removed the switch and cleaned the plunger, again testing it off the car and it worked. Back in the car nothing happening. So i'll change the switch and see if that improves things Thanks all for the advise, every day's a school day |
7th July 2020, 12:17 | #13 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,265
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
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Quote:
If the switch worked off the car, how will buying a new one help? Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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7th July 2020, 12:58 | #14 |
I really should get out more.......
Now Other Manufacturer Join Date: Nov 2006
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As in post 3, "The switch in the manual car is a common problem - it works fine if you remove it and test it, but putting the car in reverse, the switch is often not pushed hard/far enough to put the lights on."
A replacement switch may cure the problem. |
7th July 2020, 13:09 | #15 |
I really should get out more.......
Now Other Manufacturer Join Date: Nov 2006
Location: Co. Kerry
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7th July 2020, 15:49 | #16 |
This is my second home
75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010
Location: Leeds
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The switch plungers are not thrown or pushed far enough, when reverse is selected. Maybe a combination of wear of the gearbox and wear in the original switch. A new switch, adding a blob of solder to the nose of the plunger or turning the hex down in a lathe can all help fix the problem.
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Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money. |
10th July 2020, 10:47 | #17 |
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Rover 75 CDT Join Date: Nov 2007
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All,
Managed to fix the reverse light problem. It was the switch after all. The old one must have been been playing tricks with the circuit and tests I tried. Electrickery can be challenging at times. Interestingly the new switch from plunger tip to nut is slightly shorter than the original. Big thanks to all that helped, and its another example of switch failure to add to the list |
10th July 2020, 19:53 | #18 | |
This is my second home
75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010
Location: Leeds
Posts: 17,273
Thanks: 2,160
Thanked 2,061 Times in 1,586 Posts
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Quote:
The new switch will operate with the plunger further out, than the old one.
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Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money. |
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