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2005 mazda 6 2.3 automatic transmission not charging the battery
- Mitchroberson
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2 years 6 months ago - 2 years 6 months ago #52093
by Chad
I am assuming (you know what they say about assuming) that this works the same as Ford's ComMon (command and monitor) systems. IF that is the case, The PCM will send (command) a Duty Cycle (square wave) to the alternator on one of the two wires that run between. The PCM will also look for (Monitor) the Alternator to "echo" the command, as confirmation, on the other wire. I found an image of the command square wave.
It suggests that the signal should toggle between 0 and 8 volts.
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
Replied by Chad on topic 2005 mazda 6 2.3 automatic transmission not charging the battery
I am assuming (you know what they say about assuming) that this works the same as Ford's ComMon (command and monitor) systems. IF that is the case, The PCM will send (command) a Duty Cycle (square wave) to the alternator on one of the two wires that run between. The PCM will also look for (Monitor) the Alternator to "echo" the command, as confirmation, on the other wire. I found an image of the command square wave.
It suggests that the signal should toggle between 0 and 8 volts.
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
Last edit: 2 years 6 months ago by Chad.
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