Thread: Alternator Wiring Harness troubles

Hopefully this link has the info you need. The diagram covers both petrol and diesel motors



https://www.disco3.co.uk/gallery/alb...ng_diagram.pdf

This link describes the generator system including connector C0053 and the pinouts
Land Rover Workshop Manuals > LR3/Disco 3 > 414-02B Generator And Regulator 4.4L > Description Adn Operation

IMG_7467.JPGThis is the way I’ve put them back in. Does this look right ? I still have the battery light on the dash and when I scan the code it comes up with P0622 Generator Field terminal circuit thanks for the help

Looking at the circuit diagram for a diesel connector C0053 Pin1 is Red, Pin2 White /Purple, Pin3 White /Green

Cant really see the colours in the pic but it looks like white green is in pin2. You dont mention a White/ purple

Try swapping the White/ green to 3. Make sure the red which is battery voltage is in the correct position to avoid bricking the ECU

Maybe someone with a LR3 can visually confirm
I have a RRS which is wired differently so cant help

So I think I’ve fixed the alternator wiring issue as I don’t have the battery light coming up on the dash anymore, but now I have a park brake fault coming up and the car goes into limited gears mode. Also have a surge in the interior lights when car is running. When I scan the code that comes up is P0563 System voltage high. What might be the cause of this ?

So fault seems to occur when I rev the engine. On the scanner the Battery Voltage jumps up to 15.9 v and the errors start. When I just idle the engine the voltage drops back to around 13.5 to 14.5 and error goes away. Any ideas ?

whats the battery voltage with the car turned off, it shouldnt go past 15.0 volts i know ive seen my d4 hit 15.0v with a nearly dead battery after a hard start.
if you got the wiring incorrect you could be giving the field the wrong voltage and therefor forcing the alternator to charge so high.
go to a wrecker or call one and ask them to take a photo of the plug, or better still go and cut it off a harness and come home and solder onto your harness, then you will have an undamaged plug on your car