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Discussion Starter · #1 ·
Hello.
2002, IS300. M/T here.

Anyone know or able to point me in the direction of info on the Integrated Circuitry (IC) on the ECM that is responsible for commanding the MIL bulb. I.e performing the ECM self test and turning on the MIL light when the key is inserted in the ignition and turned on.
I have verified that it’s not the bulb or the wire from the ECM to the bulb.
I have also verified that the ECM is not commanding the line with a ground signal on key on.
Any other ideas will be appreciated.
Thanks.
 

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The stupid question. Did you check all the fuses? Is this a sudden problem? Have you changed or done any changes recently?
 

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Discussion Starter · #3 ·
In the wireing diagram for the wire from the bulb to the ECU there does not appare to any fuses in the path that might cause the light not to illuminate. Pls someone correct me if I am wrong. I will also go check the fuses.
I think it is a sudden issue, but I am not 100% as I first noticed it about 6 mouths ago.
Recent Changes are a little hard to track, car is moded, (1jz-gte) swap and there is always something going on lol.
 
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