Quote:
Originally Posted by bob12
Like your thinking man .... pump up the volume. Thank goodness I don't have these little niggles .... currently 745 battery on Spring charge and, the V70 is a just a dreamboat until it goes pear shaped! Bob.  |
Likewise - i've discovered i should have a "Diagnostic Connector" under the bonnet of my 760 (LH2.2) that only reads "live" faults as in no memory. Apparently it can be accessed with an LED (with series resistor) fed from the +ve terminal of the battery while the ignition is on and/or engine is running. Allegedly in one mode at idle, it can be used to set the fuel mixture by getting the LED to flash on/off for equal lengths of time (50% duty cycle) by adjusting the mixture screw in the MAF.
I've yet to confirm the location and operation of it but might prove useful one day if i can't get any sense out of the usual checks if something goes belly-up!
I suppose a hand-held oscilloscope could be used instead of the LED to actually measure the duty cycle but i wonder how accurately it would set the mixture.
When i'm bored one sunny day i'll investigate this feature to firstly confirm its existence, secondly the operation of fault code reading and lastly while hooked up to the Gastester, to see if the mixture can be set accurately.