steve23002
New Member
Hi guys. I recently got a 220cdi, was fine for a week but now it wont start or crank. At first I suspected the ecu to be at fault due to esp and abs warnings plus the engine fan running at full speed. I tested the ecu connections and found no voltage to the ecu at all. I then tested all the wiring and found continuity to all wires from the front sam unit. I noticed some corrosion on a couple of pins and opened up the front sam unit and found it full off corrosion. I fitted a new unit but the fault is still the same, no start, no crank and no power to the ecu. I have tested all the fuses including the alternator fuse and all the fuses in the front and rear pre fuse boxes. All are good with a 12v supply and 12v both sides. Plugged into 2 machines and the only code thats coming up in the electronics is 9081 'Terminal 61 open circuit' .
From what I can gather terminal 61 is the alternator D+, I have checked the wiring and it shows continuity.
Only other faults in the system are can communication faults from where the ecu is not powering up. The main battery has good voltage and the starter battery has good voltage. I have also checked and cleaned all the earth points.
Any help is appreciated as im scratching my head now. Thanks for any help in advance
From what I can gather terminal 61 is the alternator D+, I have checked the wiring and it shows continuity.
Only other faults in the system are can communication faults from where the ecu is not powering up. The main battery has good voltage and the starter battery has good voltage. I have also checked and cleaned all the earth points.
Any help is appreciated as im scratching my head now. Thanks for any help in advance