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Author Topic: Reverse lamp switch Auto trans Ar25  (Read 2125 times)

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Jan Suhr

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Reverse lamp switch Auto trans Ar25
« on: 13 July 2020, 18:14:21 »

I think I have problems with the feed to my reverse lights. Checking at the connector coming to the lights I have no voltage there. Other lights are are working at the rear.

Is there a similar switch as on the manuals or is this controlled in some other way?

Thanks
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Jan Suhr
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Re: Reverse lamp switch Auto trans Ar25
« Reply #1 on: 13 July 2020, 18:20:57 »

I'd have to double check, but I think on autos its from the range switch.
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Re: Reverse lamp switch Auto trans Ar25
« Reply #2 on: 13 July 2020, 19:10:32 »

I'd have to double check, but I think on autos its from the range switch.
This ;)
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Re: Reverse lamp switch Auto trans Ar25
« Reply #3 on: 13 July 2020, 20:51:33 »

On page 5081 (P50811) in the 2002 wiring diagram that was available for download a while ago I see that for Automatic transmissions there is a relay K161 that controls the Reverse lights. And the power that feeds the lights through a fuse to the relay is F9 (10A), might be that one that has broke, first thing to check.

Now I just have to find that relay  :-\


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Jan Suhr
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Re: Reverse lamp switch Auto trans Ar25
« Reply #4 on: 13 July 2020, 21:20:39 »

More likely to be a heat damaged wire on the selector loom between the switch and ecu... It is stuffed between the left cats and the engine/bulkhead ;)
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Re: Reverse lamp switch Auto trans Ar25
« Reply #5 on: 13 July 2020, 21:32:39 »

It was the fuse that had broke.

Silly that the manual booklet says that it is fuse #15 for the reverse lights  (and a bunch of other stuff).

There is a bit of a difference in the electrics on Facelifts compared to earlier models.

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Re: Reverse lamp switch Auto trans Ar25
« Reply #6 on: 13 July 2020, 23:08:16 »

Why did the fuse blow?
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Jan Suhr

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Re: Reverse lamp switch Auto trans Ar25
« Reply #7 on: 14 July 2020, 07:35:46 »

Why did the fuse blow?

Probably because i poked around with the volt meter in the connector. Then when the manual said that fuse #15 was for the reverse lamps and that fuse wasn't blown I suspected something else.
All sorted now thanks to correct documentation.
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