Hi guys new to the forum and would love some help.

 

A week ago I went to jump into the car and it would not crank, I suspected low battery so put some jump leads on and still nothing.

 

Since then I have checked all fuses and relays, checked the there is a good engine earth, replaced Switch & starting motor and still noting.

 

I was so lost I called RAC out and they told me it was crank sensor, I was mythed by this but replaced it anyway and still nothing.

 

Is there anything else it could be that I am missing? 

 

I trained as a mechanic 16 years ago and I am extremely lost.

 

Any advice on what to do next would be much appreciated, Oh i am only getting 0.06v to the starter terminal but the live is at 13.26v and battery is at 13.26v .

Does it click or completely nothing?

Usually immobiliser causes this

9 hours ago, James Nunn86 said:

i am only getting 0.06v to the starter terminal but the live is at 13.26v and battery is at 13.26v .

Is that the main, thick battery supply to the solenoid, or the thinner energisation wire? Either way it sounds like a broken connection. If not the fuse or the stater relay in the engine fuse box, then a break in a wire. Measuring the voltages at the starter relay terminals while turning the key to start would help narrow this down a bit. Also continuity from one of the starter relay terminals to the solenoid could be checked.

If it was the immobiliser (PATS), then I am sure it would be obvious by looking at the dash & immobiliser LED for unusual displays. The PATS LED should flash out a code if it is a PATS problem.

in the old days you could trouble shoot this to some degree by running a wire from positive battery terminal to the terminal on the starter motor solenoid (not the thick cable terminal, but the thin one that energises the solenoid).  But I do not know if on a modern car that would cause some ill effect on something else. Should be OK to do if all other wires are disconnected from the starter motor other than the thick battery cable.