I'm learning this stuff day by day but help would be appreciated greatly. Anyone know what the alternator table should look like, im thinking mine is not right
I'll search threads but if anyone knows this well please let me know.
My setting for
1. Voltage control: Not Fitted (Im thinking it should be "fitted?")
(ECM 740) " Alternator Voltage Control: Indicates the vehicle is fitted with a regulated voltage control alternator and serial message duty cycle control from BCM is available, if disabled DC will be 100% when alternator is enabled."
Firstly, on the most of the tales on HP Tuners tables each has an ecm code number. For instance in reference to the above voltage control, what does "ECM 740" mean? is this some reference where I can look up more info or a circuit number? Is there a way to look up info using these "ECM #'s"
This above "Voltage Control" parameter determines the status of the next parameter:
2. ECM override 741) "Disabled" (thinking it should be "enabled" not sure) ECM override cannot be enabled unless the above table has "fitted"
"Alternator ECM Override: (notes) Should only be enabled if Voltage Control is enabled. Indicates that the ECM can override the serial message alternator duty cycle to boost system voltage when required."
I would think that we would want that "ON"?
Doesnt this mean that the ECM will NOT increase voltage as necessary when it sees a need to increase voltage?
This makes sense then that mechanic at the shop was thinking the computer isnt telling the alternator to add voltage when needed. Maybe he just wasnt looking here since no one would normally turn that off.
Can I command the alternator to supply 14.2-14.7 at idle, which it is perfectly capable of IMO. then, amperage draw will actually reduce. The alternator will run cooler, everything will have more juice...