![]() In our testing the DC5 alternator control was a switched output with the alternator regulating to either 13v with the output on active low or 14v with the output off. Before you do your log, can you also go to PID Setup down the bottom of the ecu settings tree and set that to Alternator control so we get a log of what the control loop is doing.īTW, if the 18V fuel cut is preventing you from testing, you can go to >engine protection>sys voltage limit and adjust it higher there. I think Vaughan's suggestion of trying the NB MX5 settings would be a good test. I believe some PWM alternators can be fussy with frequency although 250Hz seems to be most common. If you had the opportunity it would be really nice to know the frequency that the Hondata is using to control the alt - most modern multimeters have a frequency function if you dont have access to a scope. They were all engine swap applications though so I assumed there must be some other model alternator. All documentation I can find for the DC5 only mentions the "dual mode" charging system as Vaughan describes where it can only do normal voltage or low voltage, but I have seen a couple of reports from users that had very high voltage with aux 8 off. I was just typing something similar to Vaughan. ![]() First I think alternator have some issue but when I see it with hondata its ok, I want to ask here.Īlso I tried to reduce max clamp to 60 and nothing change. ![]() I also checked with voltmeter on battery, charging goes upto 18 but with hondata ecu (customer has hondata kpro, he will sell it after link ecu tuned) charging never goes more than 14.2. I tried a known map (map from a car before I tuned) and same issue again. So I tried for proportional 3, integra 0.5, and derivative to 0.5 to 3 but nothing solves the issue. So, I make alternator control none to aux8 and tried to control the alternator but I don't know the pid settings etc. Even its auxilary output -> alternator control is none it tries to control I think. When I check manual see that aux 8 is connected to alternator control. I see that battery voltage goes up to 18v and goes to fuel cut on and off. I used the map inside the plugin ecu and when I start the engine aux 8 gives fault and also ecu voltage high error. Hello, today I bought a new plugin ecu for my customer jdm DC5 type r.
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