Check Engine Light does not work - Lexus IS Forum
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post #1 of 2 (permalink) Old 08-22-2018, 03:05 AM Thread Starter
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Check Engine Light does not work

Hello guys,
I finally got myself an Altezza 🙂
I bought the car in working condition but with some minor problems.
When I start the car up until its completely warmed up (idle drops below 1000) I have no problem. Once it warms up things get wierd.
The car seems to be fine at higher revs (past 4000) but it feels sluggish around (3000-4000) also when i drive over humps with the AC on and the revs drop below 2500 I cant full throttle. It bogs down and stays like that until it reaches 4000 than power comes till 8000.
I cleaned the vvti selenoids and maf sensor. Not much changed.
I measured my consumption 10L/100km
I check the fuel tank it is clean.
No fuel filter
No vacuum leak.
Spark plugs all clean.

First problem is that I cannot connect to a scan tool.
Second problem is that the Check engine light never comes on.
I did check the bulb in cluster and it is fine.
I measured the voltages between the ecu pin (i dont remember but according to service manual) and it was good. So I should not have an engine light on while driving.

What can be that Check engine light doea not come on when I turn the ignition on?
Why can I connect to the ecu with Autoland WT2?

Mehmet Hakki Aktug is offline  
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post #2 of 2 (permalink) Old 08-22-2018, 03:44 PM
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Bad bulb or blown fuse. That would be a start.
01 SolarYellow is offline  
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