Quote:
Originally Posted by Jules
Yes John stuff can be tested with bumper/head lights removed.
But make sure demist is used as dash will read -30C so ATC will think you are in the arctic so no LO settings will work but demist overides everything !!
The only sure way to monitor relays with Petrols is with a very small wattage bulb (so as not to damage ECU) or preferably a Voltmeter to see if any voltage going to relay coils.
FrenchMike
Message for you re PWM's
I measured the blue/red signal for an AC command just for those without an oscilloscope.
AC on
The voltage is approx 6.5v DC (obviously in reality this is a square wave)
AC off
Voltage is 8.5v
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Hi Jules,
Quite possible ,you have measured the mean value :
About the ECU ,i don't know the diagram ,i only suppose they are open drains.
so we could earth the output without damage
Mike