MIL light on

MIL light on

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Plan B

Original Poster:

347 posts

124 months

Friday 24th November 2017
quotequote all
After having changed the dashboard and replaced the dash panel LEDs with new replacements last week I'm now getting the MIL warning light on when running. Rover Gauge is showing no fault codes (and I've cleared them down as a second precaution) and the engine sounds sweet. How can this be happening? Is there a specific way to extinguish the MIL other than clearing all fult codes?
One question: - does the 14CUX supply a permanent live feed into the warning panel and switch in the earth return when in error condition? (I only ask this because it might give me a clue to look for a spurious earth in the LED circuit
Another question: - anyone know the wire colours feeding the MIL warning light (I ask this because I might have connected the wrong wires to the MIL)

chris52

1,560 posts

182 months

Friday 24th November 2017
quotequote all
Plan B said:
After having changed the dashboard and replaced the dash panel LEDs with new replacements last week I'm now getting the MIL warning light on when running. Rover Gauge is showing no fault codes (and I've cleared them down as a second precaution) and the engine sounds sweet. How can this be happening? Is there a specific way to extinguish the MIL other than clearing all fult codes?
One question: - does the 14CUX supply a permanent live feed into the warning panel and switch in the earth return when in error condition? (I only ask this because it might give me a clue to look for a spurious earth in the LED circuit
Another question: - anyone know the wire colours feeding the MIL warning light (I ask this because I might have connected the wrong wires to the MIL)
The MIL feed from the ECU is a negative feed when the MiL is on (dead feed when off)sorry cant remember which colour wire or pin. Most Griffs MIL don’t actually work because TVR put a negative feed to other side as well so when the light should be illuminated it had two negative feeds.


GlynMo

1,140 posts

248 months

Friday 24th November 2017
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This might help with the wire colours


Plan B

Original Poster:

347 posts

124 months

Friday 24th November 2017
quotequote all
Thanks for the feedback. Any further info/suggestions welcome.
cheers

Steve_D

13,737 posts

257 months

Friday 24th November 2017
quotequote all
14CUX (Pin 10) earths the MIL lamp so your lamp should have a green supply and (probably) a light green/black wire to pin 10.

Steve

Hedgehopper

1,537 posts

243 months

Saturday 25th November 2017
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Penelope Stoppedit

11,209 posts

108 months

Saturday 25th November 2017
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Plan B said:
Thanks for the feedback. Any further info/suggestions welcome.
cheers
Once you are sure you have the light connected up correctly, if the light is remaining on you can disconnect the ECU, with ignition on and the ECU disconnected there should be no light on

Plan B

Original Poster:

347 posts

124 months

Saturday 25th November 2017
quotequote all
Thanks for the info and suggestions. I’ll get stuck into this next week. Looks like the dash will have to come out again arghh!