I have dual alternator I just had both rebuilt. But now i'm getting a control fault code for the lower alt its a 1106, does any body had this problem? Its charging fine on either alternator when isolated ? I've gone thru the troubleshooting steps from ford maintenance manual for the code but don't see any problems. But the code comes back.
Can someone explain the alternator/charge indicator circuit to me ?
I'm looking at a schematic in a Haynes Superduty manual.
The "Generator" has 3 wires coming out of it: B, A and "-". Additionally, the alternator is grounded.
So... B goes to the batteries. Makes sense. This is the big cable connection.
A goes to the battery junction box and has a 6A fuse.
"-" goes to the battery junction box but has the key and charge indicator in the circuit.
I don't understand the function of A and "-".
One more thing: I thought the ECM controlled the field in these alternators and I don't see a field connection anywhere.
Thanks in advance to anyone who can explain this to me.
The "Generator" has 3 wires coming out of it: B, A and "-". Additionally, the alternator is grounded.
So... B goes to the batteries. Makes sense. This is the big cable connection.
A goes to the battery junction box and has a 6A fuse.
"-" goes to the battery junction box but has the key and charge indicator in the circuit.
I don't understand the function of A and "-".
One more thing: I thought the ECM controlled the field in these alternators and I don't see a field connection anywhere.
Thanks in advance to anyone who can explain this to me.
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