2012 fiesta issues

[Dartzman]

I hope somone can help. my daughter has a weird problem with her 2012 ford fiesta zetec

every now and then, mainly in the morning, when she starts up the car, the traction control light is on and the power steering fails. there isn't any warning light on the power steering however once the traction control light goes off the power steering works. it did have a flat battery, which I charged up and it did have a crankshaft sensor error PO335
CRANKSHAFT POSITION SENSOR A CIRCUIT which reset fine.

anyone else had this issue anyone have an idea ?

thanks in advance. Kevin

 

[econoboxrocks]

If the battery is weak, replace it.

 

[Handy Andy]

While you are there at the battery, look for that little cover and housing that the battery Positive post goes to...

​

Remove that cover, and see this?

​

Remiving that cover exposes these bolted connections - this is the main Buss distribution for the Battery there are a
set of uses behind that plastic see-thru cover

​

This is the "breakout" or Breakdown of the system,

• The upper top posts, there are two, one for the Post for the Battery, is an ADAPTER to mate with another piece.
• while the other bolt is part of a TWO PIECE unit - this second piece is the BJB - Battery Junction Box or Buss - this and the Battery Post adapter - bolts together so this needs to be unbolted and cleaned up and re-bolted back together. This is where the BREAKDOWN to the indivudual systems happens.
• the far RED post is for the Starter and Alternator
• The Middle one (in Blue) "Main" (200A) handles all the power heading to the front dash and console for the passenger compartment.
• The Yellow one is for your Electronic Power Assist Steering - your Fiesta's steering rack.

If yours looks like the one above - like I've been using - as a driver for a company - then you need to clean this up and if possible - solder those main connection lugs so they won't corrode and cause problems with your electrical system later on.