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5th September 2018, 10:36 | #11 |
Gets stuck in
None at the moment Join Date: Jan 2018
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I think according to the wiring diagram I have there is a voltage sensing lead to the ECM ,White/red trace , which is there to modify output
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5th September 2018, 14:14 | #12 | |
SERVICING AND DEALER DIAGNOSTICS
MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013
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Quote:
Mick
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[SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE] |
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7th September 2018, 13:37 | #13 | |
This is my second home
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Quote:
The connections to the alternator are those direct to the battery and the earth. None to the ECU. To make the alternator raise its charge the electrical supply to the alternator armature has to be increased. The armature is an electro magnet, the strength of which depends on the input current into it. The output from the alternator comes from its field coils.. There is a voltage sensing circuit in the alternator regulator. When the electrical voltage in the cars electrical system rises to around 14 to 14.5 volts the regulator steps in and limits the electrical supply to the alternator armature. The magnetic strength holds steady. So does the alternator output. There is no way that the ECU can control the supply of current to the armature. There is no circuitry to do this. Nor is it needed.--- Happy motoring.---- |
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7th September 2018, 14:42 | #14 |
Doesn't do things by halves
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RAVE has an explanation in which I’m sure all readers of this thread will be interested:
”A signal output is also provided by the regulator and provides output data to the Engine Control Module (ECM) which adjusts the idle speed under varying electrical loads.” So it’s nothing to do with charging as Colvert has said. We learn something new every day don’t we! Simon
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