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12-18-2023, 03:49 AM | #1 |
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6MT Reverse gear light signal in FRM with engine off?
I was just testing my BMW Advanced Tools / ISTA+ setup on my new-to-me E93 and noticed that in INPA FRM -> Status -> Button, the reverse gear light signal isn't working when I shift (manual transmission) into reverse.
I just got the car, so I don't know if maybe the switch/wiring is bad, but I'm also not sure if it is normal that it doesn't work without the engine running. I've got enough stuff apart under the hood that I can't start the engine, and it's going to be that way for awhile. Can anyone tell me if it's normal or not that the signal isn't active with the engine off, but the ignition on (position 2), so I can add this to the list of stuff I need to get sorted out before spring if necessary? Thanks. |
12-18-2023, 09:10 AM | #2 |
mTekMods
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power for those sensors on the gearbox comes through the dme bin. its not constant power, it will only work with ignition on. this applies to 6mt
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2011 Frozen Black/Fox Red E90 M3 650+WHP
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12-18-2023, 03:03 PM | #3 | |
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Drives: E53 X5, E83 X3, E93 M3
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Wiring for FRM and Reverse Light
Quote:
Since this is dealing with your lights, it makes sense that the FRM controls this switch input on the 6MT. Since you said quite a few things are disconnected under the hood, make sure these connectors, like X6011, is connected so that the circuit completes to the FRM. It looks like all the FRM is looking for is a ground for when the switch is activated.
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2008 BMW M3 E93 MT
R135 └┼┼┼ ..246 |
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12-19-2023, 04:19 AM | #5 |
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OK, confirmed, it's the switch not working.
Switch contacts are open both in and out of reverse. Jumping the harness connector contacts together with the ignition on turns on the reverse lights, with ignition on, engine not running. Looks like I need a new switch. Thanks again. |
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12-20-2023, 12:36 PM | #6 |
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Drives: E53 X5, E83 X3, E93 M3
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Great! Thanks for reporting back!
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2008 BMW M3 E93 MT
R135 └┼┼┼ ..246 |
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