Here we go again! LM7 crank but no start

[Paul Y]

Gentlemen,

After the euphoria of fixing my injectors not working on the passenger bank had passed, went out to the shed today to move the truck out so I could start work on another project and it wouldnt start.

Symptoms first.

Cranks but wont start
Fuel pump doesnt run.
No spark
Injectors not pulsing

What I have checked

All fuses - good with none blown
Ohmed pump relay 86 to earth - was negligible so thats good.
Jumped pin 30 -12v to 87 pump runs
Checked power to PCM at pin 20(?) - the orange one - 12V
Checked continuity between PCM - pin 2 - green and white wire - and the CPS plug - All good.
CPS was changed as part of the prior trouble shooting
Plugged in other known good PCM - still no start
There is no voltage on the CPS plug with ignition on - I was lead to believe that there should be 12 volts.
Battery voltage is 11.8v

The amount of frustration I am feeling towards this damn truck is beyond description. As it was running and now isn't I am hoping that it is something really simple and one of you clever souls will go "Ah Ha you Bald Twit its...."

Over to you Gentlemen, what have I missed.

Paul.