Quote:
Originally Posted by Boxersix
It's also backwards now. Normally when the CEL is on in the dash, the PCM is sending no voltage to the cluster. So when I hard wire in an indicator lamp to the actual PCM output wire, the light is ON when there is actually no fault and when it goes out there's a fault.
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I would guess that you may have your lamp grounded and are expecting a B+ fault signal.
The CEL is normally energised with the ignition switched on, to become illuminated when grounded, via the the solid state switch within the PCM/ECU/MPFI unit.
