2005 Scion Tc, how to reset check engine light?

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Old 14 Jan 2014, 04:09 pm   #1 (permalink)
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Default 2005 Scion Tc, how to reset check engine light?

How do you reset the "Check Engine Light", not the "Maitenace Required" light. The check engine light has the picture of an engine and the Maitenance Required light looks something like this, (!). I want to know how to reset the check engine light, not the maitenace required light.
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Old 14 Jan 2014, 04:25 pm   #2 (permalink)
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Only way you can turn it off if buy using a OBD 2 scanner. Even if you turn it off the code will still be there, just the light won't be showing.
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Old 14 Jan 2014, 04:40 pm   #3 (permalink)
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you need to figure out why the light is on before clearing the code. you don't need an obd 2 scanner to clear a code. You can do this by disconnecting the battery for about 15 minutes or disconnecting it and touching the cable ends together. touching the cable ends together will discharge any residual voltage in the PCM. If you clear it without fixing the problem the light will comeback on in a few drive cycles and the monitors will be set to "not ready" making it not possible to get an inspection sticker until the problem is fixed
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Old 14 Jan 2014, 04:54 pm   #4 (permalink)
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You can do this by disconnecting the battery for about 15 minutes or disconnecting it and touching the cable ends together. touching the cable ends together will discharge any residual voltage in the PCM.















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Or save all that mess and pull the PCM fuse in the underhood relay box. An actual ASE certified tech knows this, though.
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