STX 550 V6 code P0647 Issues

[Trex4x4]

Help please, I have replaced my glow plugs and still have the same hard cold start issue, chugging and smoke.
No other issues running or hot start.
The code is present only after starting, ex, if I scan and clear the code before cold start then proceed to start and suffer issues as above and the code P0647 sets again.

 

[Trex4x4]

Still chasing this code
Can anyone tell me if this wiring is factory

 

[Trex4x4]

Well, it seems like they are fusible links, looks like I have to dig a bit deeper into the loom and try trace/test the three small wires.
Any help at all would be appreciated.

 

[shawnjf]

That wiring does not look standard. Are you sure the code is P0647 and not P0674. P0647 is to do with the air conditioning clutch relay which shouldn't interfere with the car starting. P0674 refers to an open circuit on glow plug 4 which is more to do with the glow plug replacement. Hope this helps.

 

[Trex4x4]

That wiring does not look standard. Are you sure the code is P0647 and not P0674. P0647 is to do with the air conditioning clutch relay which shouldn't interfere with the car starting. P0674 refers to an open circuit on glow plug 4 which is more to do with the glow plug replacement. Hope this helps.

Sorry, typo code P0674
Had two people tell me now the loom is nissan but I have my doubts, worked on a lot of different cars and never seen a loom like this...