Chris hallxxyfd
New member
I know yh mate hence i need help ive been down so many rabbit holesJust measuring with a volt meter isn't going to help us here, as that's what they will have done

I know yh mate hence i need help ive been down so many rabbit holesJust measuring with a volt meter isn't going to help us here, as that's what they will have done
Fantastic mate you clearly know what you are doing how much would you want to do this?What we need is a starting point
We can measure this point (red in the diagram below) and make sure it's around 1V at ignition on and around 14V with the engine running
We could also pull apart D029 connector and measure the output from the ECU at ignition on which should be around 9 volts give or take
View attachment 460413
We can control the battery light from the body computer directly via software this would prove the body computer can send the correct information to the dash and the dash is working correctly
Odds favour the the information received from the alternator isn't correct due to either it's wire or alternator fault, which we can test with a £5 multimeter
I have assumed your is without start stop, but the principles are the same for both
I would also assume that its an issue with the ecu as some of the fuses which i have replaced were burntWhat we need is a starting point
We can measure this point (red in the diagram below) and make sure it's around 1V at ignition on and around 14V with the engine running
We could also pull apart D029 connector and measure the output from the ECU at ignition on which should be around 9 volts give or take
View attachment 460413
We can control the battery light from the body computer directly via software this would prove the body computer can send the correct information to the dash and the dash is working correctly
Odds favour the the information received from the alternator isn't correct due to either it's wire or alternator fault, which we can test with a £5 multimeter
I have assumed your is without start stop, but the principles are the same for both
I'd rather keep all information on here, if possible so it helps othersOk to have your number?
Yes ECU, body computer, dash all have to work and communicate with each otheI would also assume that its an issue with the ecu as some of the fuses which i have replaced were burnt
Yes you can bring the car, but it's a long way, there must be someone more localOk no worries would i be able to bring it to you though the car?