C class - Crank but not starting
Car: MB C-class w203 cdi
Engine: OM611.962
The engine has been hard to start a long time, now it does not start at all.
What is checked:
Checked with iCarsoft CR plus - no codes.
Battery - OK
Pump relay in back SAM is checked - OK.
Pump fuse in back SAM does not exist (F4). Very strange.... Tried to put a fuse in, but no change.
Could it be that the relay and fuse are not in use? Or remodeled?
Pump in the tank not running.
Pump on passenger side partnr: A2034700794
Sender unit on driver side: A2034700141
Looks like all electrical connections are via "Transmitter unit". There are 4 wires in the sender unit wire, but in the sender unit there are only the 2 in the middle that have pins, and there are very thin wires connected to these, so dont think it is for the pump....
Is there any other connections for the pump?
Whats next to check?
- Camshaft sensor
- Crankshaft sensor.
- Diesel leakage.
Will update with more info.


